Merge branch 'dev' into patch-7

app/src/main/java/org/schabi/newpipe/App.java

@@ -106,7 +106,7 @@ public class App extends Application {
         // https://github.com/ReactiveX/RxJava/wiki/What's-different-in-2.0#error-handling
         RxJavaPlugins.setErrorHandler(new Consumer<Throwable>() {
             @Override
-            public void accept(@NonNull Throwable throwable) throws Exception {
+            public void accept(@NonNull Throwable throwable) {
                 Log.e(TAG, "RxJavaPlugins.ErrorHandler called with -> : " +
                         "throwable = [" + throwable.getClass().getName() + "]");
 

app/src/main/java/org/schabi/newpipe/BaseFragment.java

@@ -12,14 +12,12 @@ import android.view.View;
 import com.nostra13.universalimageloader.core.ImageLoader;
 import com.squareup.leakcanary.RefWatcher;
 
-import org.schabi.newpipe.report.UserAction;
-
 import icepick.Icepick;
 import icepick.State;
 
 public abstract class BaseFragment extends Fragment {
     protected final String TAG = getClass().getSimpleName() + "@" + Integer.toHexString(hashCode());
-    protected boolean DEBUG = MainActivity.DEBUG;
+    protected final boolean DEBUG = MainActivity.DEBUG;
 
     protected AppCompatActivity activity;
     public static final ImageLoader imageLoader = ImageLoader.getInstance();

app/src/main/java/org/schabi/newpipe/Downloader.java

@@ -43,7 +43,7 @@ public class Downloader implements org.schabi.newpipe.extractor.Downloader {
 
     private static Downloader instance;
     private String mCookies;
-    private OkHttpClient client;
+    private final OkHttpClient client;
 
     private Downloader(OkHttpClient.Builder builder) {
         this.client = builder

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -23,7 +23,6 @@ package org.schabi.newpipe;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
-import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
@@ -66,8 +65,6 @@ import org.schabi.newpipe.util.ServiceHelper;
 import org.schabi.newpipe.util.StateSaver;
 import org.schabi.newpipe.util.ThemeHelper;
 
-import static org.schabi.newpipe.extractor.InfoItem.InfoType.PLAYLIST;
-
 public class MainActivity extends AppCompatActivity {
     private static final String TAG = "MainActivity";
     public static final boolean DEBUG = !BuildConfig.BUILD_TYPE.equals("release");

app/src/main/java/org/schabi/newpipe/ReCaptchaActivity.java

@@ -85,7 +85,7 @@ public class ReCaptchaActivity extends AppCompatActivity {
     }
 
     private class ReCaptchaWebViewClient extends WebViewClient {
-        private Activity context;
+        private final Activity context;
         private String mCookies;
 
         ReCaptchaWebViewClient(Activity ctx) {

app/src/main/java/org/schabi/newpipe/RouterActivity.java

@@ -1,7 +1,6 @@
 package org.schabi.newpipe;
 
 import android.annotation.SuppressLint;
-import android.app.FragmentManager;
 import android.app.IntentService;
 import android.content.Context;
 import android.content.DialogInterface;
@@ -13,7 +12,6 @@ import android.preference.PreferenceManager;
 import android.support.annotation.DrawableRes;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.v4.app.Fragment;
 import android.support.v4.app.NotificationCompat;
 import android.support.v7.app.AlertDialog;
 import android.support.v7.app.AppCompatActivity;
@@ -38,7 +36,6 @@ import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.VideoStream;
-import org.schabi.newpipe.fragments.detail.VideoDetailFragment;
 import org.schabi.newpipe.player.helper.PlayerHelper;
 import org.schabi.newpipe.player.playqueue.ChannelPlayQueue;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
@@ -51,14 +48,12 @@ import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.PermissionHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 
-import java.io.IOException;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.List;
-import java.util.Observer;
 
 import icepick.Icepick;
 import icepick.State;
@@ -86,7 +81,7 @@ public class RouterActivity extends AppCompatActivity {
     protected int selectedPreviously = -1;
 
     protected String currentUrl;
-    protected CompositeDisposable disposables = new CompositeDisposable();
+    protected final CompositeDisposable disposables = new CompositeDisposable();
 
     private boolean selectionIsDownload = false;
 
@@ -184,12 +179,16 @@ public class RouterActivity extends AppCompatActivity {
         if (selectedChoiceKey.equals(alwaysAskKey)) {
             final List<AdapterChoiceItem> choices = getChoicesForService(currentService, currentLinkType);
 
-            if (choices.size() == 1) {
+            switch (choices.size()) {
-                handleChoice(choices.get(0).key);
+                case 1:
-            } else if (choices.size() == 0) {
+                    handleChoice(choices.get(0).key);
-                handleChoice(showInfoKey);
+                    break;
-            } else {
+                case 0:
-                showDialog(choices);
+                    handleChoice(showInfoKey);
+                    break;
+                default:
+                    showDialog(choices);
+                    break;
             }
         } else if (selectedChoiceKey.equals(showInfoKey)) {
             handleChoice(showInfoKey);

app/src/main/java/org/schabi/newpipe/about/LicenseFragmentHelper.java

@@ -4,7 +4,6 @@ import android.app.Activity;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.os.AsyncTask;
-import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v7.app.AlertDialog;
 import android.webkit.WebView;
@@ -17,7 +16,7 @@ import java.lang.ref.WeakReference;
 
 public class LicenseFragmentHelper extends AsyncTask<Object, Void, Integer> {
 
-    WeakReference<Activity> weakReference;
+    final WeakReference<Activity> weakReference;
     private License license;
 
     public LicenseFragmentHelper(@Nullable Activity activity) {
@@ -78,18 +77,18 @@ public class LicenseFragmentHelper extends AsyncTask<Object, Void, Integer> {
             throw new NullPointerException("license is null");
         }
 
-        String licenseContent = "";
+        StringBuilder licenseContent = new StringBuilder();
         String webViewData;
         try {
             BufferedReader in = new BufferedReader(new InputStreamReader(context.getAssets().open(license.getFilename()), "UTF-8"));
             String str;
             while ((str = in.readLine()) != null) {
-                licenseContent += str;
+                licenseContent.append(str);
             }
             in.close();
 
             // split the HTML file and insert the stylesheet into the HEAD of the file
-            String[] insert = licenseContent.split("</head>");
+            String[] insert = licenseContent.toString().split("</head>");
             webViewData = insert[0] + "<style type=\"text/css\">"
                     + getLicenseStylesheet(context) + "</style></head>"
                     + insert[1];

app/src/main/java/org/schabi/newpipe/database/BasicDAO.java

@@ -30,7 +30,7 @@ public interface BasicDAO<Entity> {
 
     /* Deletes */
     @Delete
-    int delete(final Entity entity);
+    void delete(final Entity entity);
 
     @Delete
     int delete(final Collection<Entity> entities);
@@ -42,5 +42,5 @@ public interface BasicDAO<Entity> {
     int update(final Entity entity);
 
     @Update
-    int update(final Collection<Entity> entities);
+    void update(final Collection<Entity> entities);
 }

app/src/main/java/org/schabi/newpipe/database/history/dao/SearchHistoryDAO.java

@@ -4,7 +4,6 @@ import android.arch.persistence.room.Dao;
 import android.arch.persistence.room.Query;
 import android.support.annotation.Nullable;
 
-import org.schabi.newpipe.database.BasicDAO;
 import org.schabi.newpipe.database.history.model.SearchHistoryEntry;
 
 import java.util.List;

app/src/main/java/org/schabi/newpipe/database/history/dao/StreamHistoryDAO.java

@@ -5,7 +5,6 @@ import android.arch.persistence.room.Dao;
 import android.arch.persistence.room.Query;
 import android.support.annotation.Nullable;
 
-import org.schabi.newpipe.database.BasicDAO;
 import org.schabi.newpipe.database.history.model.StreamHistoryEntry;
 import org.schabi.newpipe.database.stream.StreamStatisticsEntry;
 import org.schabi.newpipe.database.history.model.StreamHistoryEntity;

app/src/main/java/org/schabi/newpipe/database/playlist/dao/PlaylistDAO.java

@@ -2,7 +2,6 @@ package org.schabi.newpipe.database.playlist.dao;
 
 import android.arch.persistence.room.Dao;
 import android.arch.persistence.room.Query;
-import android.arch.persistence.room.Transaction;
 
 import org.schabi.newpipe.database.BasicDAO;
 import org.schabi.newpipe.database.playlist.model.PlaylistEntity;
@@ -12,7 +11,6 @@ import java.util.List;
 import io.reactivex.Flowable;
 
 import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_ID;
-import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_NAME;
 import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_TABLE;
 
 @Dao

app/src/main/java/org/schabi/newpipe/database/playlist/dao/PlaylistStreamDAO.java

@@ -8,7 +8,6 @@ import org.schabi.newpipe.database.BasicDAO;
 import org.schabi.newpipe.database.playlist.PlaylistMetadataEntry;
 import org.schabi.newpipe.database.playlist.PlaylistStreamEntry;
 import org.schabi.newpipe.database.playlist.model.PlaylistStreamEntity;
-import org.schabi.newpipe.database.stream.model.StreamEntity;
 
 import java.util.List;
 

app/src/main/java/org/schabi/newpipe/database/playlist/model/PlaylistEntity.java

@@ -5,8 +5,6 @@ import android.arch.persistence.room.Entity;
 import android.arch.persistence.room.Index;
 import android.arch.persistence.room.PrimaryKey;
 
-import java.util.Date;
-
 import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_NAME;
 import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_TABLE;
 

app/src/main/java/org/schabi/newpipe/database/playlist/model/PlaylistRemoteEntity.java

@@ -6,7 +6,6 @@ import android.arch.persistence.room.Ignore;
 import android.arch.persistence.room.Index;
 import android.arch.persistence.room.PrimaryKey;
 
-import org.schabi.newpipe.database.LocalItem;
 import org.schabi.newpipe.database.playlist.PlaylistLocalItem;
 import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
 import org.schabi.newpipe.util.Constants;

app/src/main/java/org/schabi/newpipe/database/stream/dao/StreamDAO.java

@@ -10,7 +10,6 @@ import org.schabi.newpipe.database.BasicDAO;
 import org.schabi.newpipe.database.playlist.model.PlaylistStreamEntity;
 import org.schabi.newpipe.database.stream.model.StreamEntity;
 import org.schabi.newpipe.database.history.model.StreamHistoryEntity;
-import org.schabi.newpipe.database.stream.model.StreamStateEntity;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -23,7 +22,6 @@ import static org.schabi.newpipe.database.stream.model.StreamEntity.STREAM_SERVI
 import static org.schabi.newpipe.database.stream.model.StreamEntity.STREAM_TABLE;
 import static org.schabi.newpipe.database.stream.model.StreamEntity.STREAM_URL;
 import static org.schabi.newpipe.database.history.model.StreamHistoryEntity.STREAM_HISTORY_TABLE;
-import static org.schabi.newpipe.database.stream.model.StreamStateEntity.STREAM_STATE_TABLE;
 
 @Dao
 public abstract class StreamDAO implements BasicDAO<StreamEntity> {

app/src/main/java/org/schabi/newpipe/download/DeleteDownloadManager.java

@@ -28,11 +28,11 @@ public class DeleteDownloadManager {
 
     private static final String KEY_STATE = "delete_manager_state";
 
-    private View mView;
+    private final View mView;
-    private HashSet<String> mPendingMap;
+    private final HashSet<String> mPendingMap;
-    private List<Disposable> mDisposableList;
+    private final List<Disposable> mDisposableList;
     private DownloadManager mDownloadManager;
-    private PublishSubject<DownloadMission> publishSubject = PublishSubject.create();
+    private final PublishSubject<DownloadMission> publishSubject = PublishSubject.create();
 
     DeleteDownloadManager(Activity activity) {
         mPendingMap = new HashSet<>();

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -55,7 +55,7 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
     private StreamItemAdapter<AudioStream> audioStreamsAdapter;
     private StreamItemAdapter<VideoStream> videoStreamsAdapter;
 
-    private CompositeDisposable disposables = new CompositeDisposable();
+    private final CompositeDisposable disposables = new CompositeDisposable();
 
     private EditText nameEditText;
     private Spinner streamsSpinner;

app/src/main/java/org/schabi/newpipe/fragments/BaseStateFragment.java

@@ -32,7 +32,6 @@ import java.util.concurrent.atomic.AtomicBoolean;
 
 import icepick.State;
 import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.functions.Consumer;
 
 import static org.schabi.newpipe.util.AnimationUtils.animateView;
 

app/src/main/java/org/schabi/newpipe/fragments/BlankFragment.java

@@ -2,7 +2,6 @@ package org.schabi.newpipe.fragments;
 
 import android.os.Bundle;
 import android.support.annotation.Nullable;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;

app/src/main/java/org/schabi/newpipe/fragments/detail/StackItem.java

@@ -3,9 +3,9 @@ package org.schabi.newpipe.fragments.detail;
 import java.io.Serializable;
 
 class StackItem implements Serializable {
-    private int serviceId;
+    private final int serviceId;
     private String title;
-    private String url;
+    private final String url;
 
     StackItem(int serviceId, String url, String title) {
         this.serviceId = serviceId;

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -760,7 +760,7 @@ public class VideoDetailFragment
      * Stack that contains the "navigation history".<br>
      * The peek is the current video.
      */
-    protected LinkedList<StackItem> stack = new LinkedList<>();
+    protected final LinkedList<StackItem> stack = new LinkedList<>();
 
     public void clearHistory() {
         stack.clear();

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListInfoFragment.java

@@ -8,9 +8,6 @@ import android.view.View;
 
 import org.schabi.newpipe.extractor.ListExtractor;
 import org.schabi.newpipe.extractor.ListInfo;
-import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
-import org.schabi.newpipe.extractor.linkhandler.LinkHandler;
 import org.schabi.newpipe.util.Constants;
 
 import java.util.Queue;
@@ -19,7 +16,6 @@ import icepick.State;
 import io.reactivex.Single;
 import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.disposables.Disposable;
-import io.reactivex.functions.Consumer;
 import io.reactivex.schedulers.Schedulers;
 
 public abstract class BaseListInfoFragment<I extends ListInfo>

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -68,7 +68,7 @@ import static org.schabi.newpipe.util.AnimationUtils.animateView;
 
 public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
 
-    private CompositeDisposable disposables = new CompositeDisposable();
+    private final CompositeDisposable disposables = new CompositeDisposable();
     private Disposable subscribeButtonMonitor;
     private SubscriptionService subscriptionService;
 
@@ -90,8 +90,6 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
 
     private MenuItem menuRssButton;
 
-    private boolean mIsVisibleToUser = false;
-
     public static ChannelFragment getInstance(int serviceId, String url, String name) {
         ChannelFragment instance = new ChannelFragment();
         instance.setInitialData(serviceId, url, name);
@@ -105,7 +103,6 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
     @Override
     public void setUserVisibleHint(boolean isVisibleToUser) {
         super.setUserVisibleHint(isVisibleToUser);
-        mIsVisibleToUser = isVisibleToUser;
         if(activity != null
                 && useAsFrontPage
                 && isVisibleToUser) {

app/src/main/java/org/schabi/newpipe/fragments/list/kiosk/KioskFragment.java

@@ -5,7 +5,6 @@ import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v7.app.ActionBar;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -19,8 +18,6 @@ import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.kiosk.KioskInfo;
 import org.schabi.newpipe.extractor.linkhandler.ListLinkHandlerFactory;
-import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
-import org.schabi.newpipe.extractor.linkhandler.LinkHandlerFactory;
 import org.schabi.newpipe.fragments.list.BaseListInfoFragment;
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.util.ExtractorHelper;

app/src/main/java/org/schabi/newpipe/fragments/list/playlist/PlaylistFragment.java

@@ -20,7 +20,6 @@ import android.widget.TextView;
 
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
-import org.schabi.newpipe.App;
 import org.schabi.newpipe.NewPipeDatabase;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.database.playlist.model.PlaylistRemoteEntity;
@@ -30,7 +29,6 @@ import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
 import org.schabi.newpipe.extractor.stream.StreamInfoItem;
-import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
 import org.schabi.newpipe.fragments.list.BaseListInfoFragment;
 import org.schabi.newpipe.info_list.InfoItemDialog;
 import org.schabi.newpipe.local.playlist.RemotePlaylistManager;

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -122,12 +122,11 @@ public class SearchFragment
     private String nextPageUrl;
     private String contentCountry;
     private boolean isSuggestionsEnabled = true;
-    private boolean isSearchHistoryEnabled = true;
 
-    private PublishSubject<String> suggestionPublisher = PublishSubject.create();
+    private final PublishSubject<String> suggestionPublisher = PublishSubject.create();
     private Disposable searchDisposable;
     private Disposable suggestionDisposable;
-    private CompositeDisposable disposables = new CompositeDisposable();
+    private final CompositeDisposable disposables = new CompositeDisposable();
 
     private SuggestionListAdapter suggestionListAdapter;
     private HistoryRecordManager historyRecordManager;
@@ -173,7 +172,7 @@ public class SearchFragment
 
         suggestionListAdapter = new SuggestionListAdapter(activity);
         SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
-        isSearchHistoryEnabled = preferences.getBoolean(getString(R.string.enable_search_history_key), true);
+        boolean isSearchHistoryEnabled = preferences.getBoolean(getString(R.string.enable_search_history_key), true);
         suggestionListAdapter.setShowSuggestionHistory(isSearchHistoryEnabled);
 
         historyRecordManager = new HistoryRecordManager(context);

app/src/main/java/org/schabi/newpipe/info_list/InfoItemBuilder.java

@@ -45,7 +45,7 @@ public class InfoItemBuilder {
     private static final String TAG = InfoItemBuilder.class.toString();
 
     private final Context context;
-    private ImageLoader imageLoader = ImageLoader.getInstance();
+    private final ImageLoader imageLoader = ImageLoader.getInstance();
 
     private OnClickGesture<StreamInfoItem> onStreamSelectedListener;
     private OnClickGesture<ChannelInfoItem> onChannelSelectedListener;

app/src/main/java/org/schabi/newpipe/info_list/InfoItemDialog.java

@@ -5,7 +5,6 @@ import android.app.AlertDialog;
 import android.content.DialogInterface;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.TextView;
 

app/src/main/java/org/schabi/newpipe/local/LocalItemBuilder.java

@@ -33,7 +33,7 @@ public class LocalItemBuilder {
     private static final String TAG = LocalItemBuilder.class.toString();
 
     private final Context context;
-    private ImageLoader imageLoader = ImageLoader.getInstance();
+    private final ImageLoader imageLoader = ImageLoader.getInstance();
 
     private OnClickGesture<LocalItem> onSelectedListener;
 

app/src/main/java/org/schabi/newpipe/local/dialog/PlaylistDialog.java

@@ -58,7 +58,7 @@ public abstract class PlaylistDialog extends DialogFragment implements StateSave
 
     @Override
     @SuppressWarnings("unchecked")
-    public void readFrom(@NonNull Queue<Object> savedObjects) throws Exception {
+    public void readFrom(@NonNull Queue<Object> savedObjects) {
         streamEntities = (List<StreamEntity>) savedObjects.poll();
     }
 

app/src/main/java/org/schabi/newpipe/local/feed/FeedFragment.java

@@ -36,8 +36,6 @@ import io.reactivex.MaybeObserver;
 import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.disposables.CompositeDisposable;
 import io.reactivex.disposables.Disposable;
-import io.reactivex.functions.Consumer;
-import io.reactivex.functions.Predicate;
 
 public class FeedFragment extends BaseListFragment<List<SubscriptionEntity>, Void> {
 

app/src/main/java/org/schabi/newpipe/local/history/HistoryEntryAdapter.java

@@ -1,7 +1,6 @@
 package org.schabi.newpipe.local.history;
 
 import android.content.Context;
-import android.content.res.Resources;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v7.widget.RecyclerView;

app/src/main/java/org/schabi/newpipe/local/history/HistoryRecordManager.java

@@ -45,7 +45,6 @@ import java.util.List;
 
 import io.reactivex.Flowable;
 import io.reactivex.Maybe;
-import io.reactivex.Scheduler;
 import io.reactivex.Single;
 import io.reactivex.schedulers.Schedulers;
 

app/src/main/java/org/schabi/newpipe/local/history/StatisticsPlaylistFragment.java

@@ -21,7 +21,6 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.database.LocalItem;
 import org.schabi.newpipe.database.stream.StreamStatisticsEntry;
 import org.schabi.newpipe.extractor.stream.StreamInfoItem;
-import org.schabi.newpipe.fragments.list.BaseListFragment;
 import org.schabi.newpipe.local.BaseLocalListFragment;
 import org.schabi.newpipe.info_list.InfoItemDialog;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
@@ -57,7 +56,7 @@ public class StatisticsPlaylistFragment
     /* Used for independent events */
     private Subscription databaseSubscription;
     private HistoryRecordManager recordManager;
-    private CompositeDisposable disposables = new CompositeDisposable();
+    private final CompositeDisposable disposables = new CompositeDisposable();
 
     private enum StatisticSortMode {
         LAST_PLAYED,

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionFragment.java

@@ -16,7 +16,6 @@ import android.support.annotation.Nullable;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.content.LocalBroadcastManager;
 import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
@@ -40,7 +39,6 @@ import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.subscription.SubscriptionExtractor;
 import org.schabi.newpipe.fragments.BaseStateFragment;
 import org.schabi.newpipe.info_list.InfoListAdapter;
-import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.local.subscription.services.SubscriptionsExportService;
 import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService;
@@ -81,7 +79,6 @@ public class SubscriptionFragment extends BaseStateFragment<List<SubscriptionEnt
     protected Parcelable itemsListState;
     private InfoListAdapter infoListAdapter;
 
-    private View headerRootLayout;
     private View whatsNewItemListHeader;
     private View importExportListHeader;
 
@@ -291,6 +288,7 @@ public class SubscriptionFragment extends BaseStateFragment<List<SubscriptionEnt
         itemsList = rootView.findViewById(R.id.items_list);
         itemsList.setLayoutManager(new LinearLayoutManager(activity));
 
+        View headerRootLayout;
         infoListAdapter.setHeader(headerRootLayout = activity.getLayoutInflater().inflate(R.layout.subscription_header, itemsList, false));
         whatsNewItemListHeader = headerRootLayout.findViewById(R.id.whats_new);
         importExportListHeader = headerRootLayout.findViewById(R.id.import_export);

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionService.java

@@ -55,10 +55,10 @@ public class SubscriptionService {
     private static final int SUBSCRIPTION_DEBOUNCE_INTERVAL = 500;
     private static final int SUBSCRIPTION_THREAD_POOL_SIZE = 4;
 
-    private AppDatabase db;
+    private final AppDatabase db;
-    private Flowable<List<SubscriptionEntity>> subscription;
+    private final Flowable<List<SubscriptionEntity>> subscription;
 
-    private Scheduler subscriptionScheduler;
+    private final Scheduler subscriptionScheduler;
 
     private SubscriptionService(Context context) {
         db = NewPipeDatabase.getInstance(context.getApplicationContext());
@@ -116,7 +116,7 @@ public class SubscriptionService {
     public Completable updateChannelInfo(final ChannelInfo info) {
         final Function<List<SubscriptionEntity>, CompletableSource> update = new Function<List<SubscriptionEntity>, CompletableSource>() {
             @Override
-            public CompletableSource apply(@NonNull List<SubscriptionEntity> subscriptionEntities) throws Exception {
+            public CompletableSource apply(@NonNull List<SubscriptionEntity> subscriptionEntities) {
                 if (DEBUG) Log.d(TAG, "updateChannelInfo() called with: subscriptionEntities = [" + subscriptionEntities + "]");
                 if (subscriptionEntities.size() == 1) {
                     SubscriptionEntity subscription = subscriptionEntities.get(0);

app/src/main/java/org/schabi/newpipe/local/subscription/services/BaseImportExportService.java

@@ -58,8 +58,8 @@ public abstract class BaseImportExportService extends Service {
     protected NotificationCompat.Builder notificationBuilder;
 
     protected SubscriptionService subscriptionService;
-    protected CompositeDisposable disposables = new CompositeDisposable();
+    protected final CompositeDisposable disposables = new CompositeDisposable();
-    protected PublishProcessor<String> notificationUpdater = PublishProcessor.create();
+    protected final PublishProcessor<String> notificationUpdater = PublishProcessor.create();
 
     @Nullable
     @Override
@@ -90,9 +90,9 @@ public abstract class BaseImportExportService extends Service {
 
     private static final int NOTIFICATION_SAMPLING_PERIOD = 2500;
 
-    protected AtomicInteger currentProgress = new AtomicInteger(-1);
+    protected final AtomicInteger currentProgress = new AtomicInteger(-1);
-    protected AtomicInteger maxProgress = new AtomicInteger(-1);
+    protected final AtomicInteger maxProgress = new AtomicInteger(-1);
-    protected ImportExportEventListener eventListener = new ImportExportEventListener() {
+    protected final ImportExportEventListener eventListener = new ImportExportEventListener() {
         @Override
         public void onSizeReceived(int size) {
             maxProgress.set(size);
@@ -187,13 +187,13 @@ public abstract class BaseImportExportService extends Service {
     protected Toast toast;
 
     protected void showToast(@StringRes int message) {
-        showToast(getString(message), Toast.LENGTH_SHORT);
+        showToast(getString(message));
     }
 
-    protected void showToast(String message, int duration) {
+    protected void showToast(String message) {
         if (toast != null) toast.cancel();
 
-        toast = Toast.makeText(this, message, duration);
+        toast = Toast.makeText(this, message, Toast.LENGTH_SHORT);
         toast.show();
     }
 

app/src/main/java/org/schabi/newpipe/local/subscription/services/SubscriptionsImportService.java

@@ -144,12 +144,16 @@ public class SubscriptionsImportService extends BaseImportExportService {
         showToast(R.string.import_ongoing);
 
         Flowable<List<SubscriptionItem>> flowable = null;
-        if (currentMode == CHANNEL_URL_MODE) {
+        switch (currentMode) {
-            flowable = importFromChannelUrl();
+            case CHANNEL_URL_MODE:
-        } else if (currentMode == INPUT_STREAM_MODE) {
+                flowable = importFromChannelUrl();
-            flowable = importFromInputStream();
+                break;
-        } else if (currentMode == PREVIOUS_EXPORT_MODE) {
+            case INPUT_STREAM_MODE:
-            flowable = importFromPreviousExport();
+                flowable = importFromInputStream();
+                break;
+            case PREVIOUS_EXPORT_MODE:
+                flowable = importFromPreviousExport();
+                break;
         }
 
         if (flowable == null) {

app/src/main/java/org/schabi/newpipe/player/BasePlayer.java

@@ -230,7 +230,8 @@ public abstract class BasePlayer implements
             int sizeBeforeAppend = playQueue.size();
             playQueue.append(queue.getStreams());
 
-            if (intent.getBooleanExtra(SELECT_ON_APPEND, false) &&
+            if ((intent.getBooleanExtra(SELECT_ON_APPEND, false) ||
+                    getCurrentState() == STATE_COMPLETED) &&
                     queue.getStreams().size() > 0) {
                 playQueue.setIndex(sizeBeforeAppend);
             }

app/src/main/java/org/schabi/newpipe/player/MainVideoPlayer.java

@@ -175,6 +175,10 @@ public final class MainVideoPlayer extends AppCompatActivity
             setLandscape(lastOrientationWasLandscape);
         }
 
+        final int lastResizeMode = defaultPreferences.getInt(
+                getString(R.string.last_resize_mode), AspectRatioFrameLayout.RESIZE_MODE_FIT);
+        playerImpl.setResizeMode(lastResizeMode);
+
         // Upon going in or out of multiwindow mode, isInMultiWindow will always be false,
         // since the first onResume needs to restore the player.
         // Subsequent onResume calls while multiwindow mode remains the same and the player is
@@ -705,14 +709,27 @@ public final class MainVideoPlayer extends AppCompatActivity
 
         @Override
         protected int nextResizeMode(int currentResizeMode) {
+            final int newResizeMode;
             switch (currentResizeMode) {
                 case AspectRatioFrameLayout.RESIZE_MODE_FIT:
-                    return AspectRatioFrameLayout.RESIZE_MODE_FILL;
+                    newResizeMode = AspectRatioFrameLayout.RESIZE_MODE_FILL;
+                    break;
                 case AspectRatioFrameLayout.RESIZE_MODE_FILL:
-                    return AspectRatioFrameLayout.RESIZE_MODE_ZOOM;
+                    newResizeMode = AspectRatioFrameLayout.RESIZE_MODE_ZOOM;
+                    break;
                 default:
-                    return AspectRatioFrameLayout.RESIZE_MODE_FIT;
+                    newResizeMode = AspectRatioFrameLayout.RESIZE_MODE_FIT;
+                    break;
             }
+
+            storeResizeMode(newResizeMode);
+            return newResizeMode;
+        }
+
+        private void storeResizeMode(@AspectRatioFrameLayout.ResizeMode int resizeMode) {
+            defaultPreferences.edit()
+                    .putInt(getString(R.string.last_resize_mode), resizeMode)
+                    .apply();
         }
 
         @Override

app/src/main/java/org/schabi/newpipe/player/PopupVideoPlayer.java

@@ -114,7 +114,6 @@ public final class PopupVideoPlayer extends Service {
 
     private View closeOverlayView;
     private FloatingActionButton closeOverlayButton;
-    private WindowManager.LayoutParams closeOverlayLayoutParams;
 
     private int tossFlingVelocity;
 
@@ -248,7 +247,7 @@ public final class PopupVideoPlayer extends Service {
         final int flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
                 | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
 
-        closeOverlayLayoutParams = new WindowManager.LayoutParams(
+        WindowManager.LayoutParams closeOverlayLayoutParams = new WindowManager.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT,
                 layoutParamType,
                 flags,

app/src/main/java/org/schabi/newpipe/player/VideoPlayer.java

@@ -137,16 +137,16 @@ public abstract class VideoPlayer extends BasePlayer
     private TextView captionTextView;
 
     private ValueAnimator controlViewAnimator;
-    private Handler controlsVisibilityHandler = new Handler();
+    private final Handler controlsVisibilityHandler = new Handler();
 
     boolean isSomePopupMenuVisible = false;
-    private int qualityPopupMenuGroupId = 69;
+    private final int qualityPopupMenuGroupId = 69;
     private PopupMenu qualityPopupMenu;
 
-    private int playbackSpeedPopupMenuGroupId = 79;
+    private final int playbackSpeedPopupMenuGroupId = 79;
     private PopupMenu playbackSpeedPopupMenu;
 
-    private int captionPopupMenuGroupId = 89;
+    private final int captionPopupMenuGroupId = 89;
     private PopupMenu captionPopupMenu;
 
     ///////////////////////////////////////////////////////////////////////////
@@ -683,12 +683,17 @@ public abstract class VideoPlayer extends BasePlayer
         if (getAspectRatioFrameLayout() != null) {
             final int currentResizeMode = getAspectRatioFrameLayout().getResizeMode();
             final int newResizeMode = nextResizeMode(currentResizeMode);
-            getAspectRatioFrameLayout().setResizeMode(newResizeMode);
+            setResizeMode(newResizeMode);
-            getResizeView().setText(PlayerHelper.resizeTypeOf(context, newResizeMode));
         }
     }
 
+    protected void setResizeMode(@AspectRatioFrameLayout.ResizeMode final int resizeMode) {
+        getAspectRatioFrameLayout().setResizeMode(resizeMode);
+        getResizeView().setText(PlayerHelper.resizeTypeOf(context, resizeMode));
+    }
+
     protected abstract int nextResizeMode(@AspectRatioFrameLayout.ResizeMode final int resizeMode);
+
     /*//////////////////////////////////////////////////////////////////////////
     // SeekBar Listener
     //////////////////////////////////////////////////////////////////////////*/

app/src/main/java/org/schabi/newpipe/player/helper/AudioReactor.java

@@ -116,7 +116,7 @@ public class AudioReactor implements AudioManager.OnAudioFocusChangeListener,
     private void onAudioFocusGain() {
         Log.d(TAG, "onAudioFocusGain() called");
         player.setVolume(DUCK_AUDIO_TO);
-        animateAudio(DUCK_AUDIO_TO, 1f, DUCK_DURATION);
+        animateAudio(DUCK_AUDIO_TO, 1f);
 
         if (PlayerHelper.isResumeAfterAudioFocusGain(context)) {
             player.setPlayWhenReady(true);
@@ -131,13 +131,13 @@ public class AudioReactor implements AudioManager.OnAudioFocusChangeListener,
     private void onAudioFocusLossCanDuck() {
         Log.d(TAG, "onAudioFocusLossCanDuck() called");
         // Set the volume to 1/10 on ducking
-        animateAudio(player.getVolume(), DUCK_AUDIO_TO, DUCK_DURATION);
+        animateAudio(player.getVolume(), DUCK_AUDIO_TO);
     }
 
-    private void animateAudio(final float from, final float to, int duration) {
+    private void animateAudio(final float from, final float to) {
         ValueAnimator valueAnimator = new ValueAnimator();
         valueAnimator.setFloatValues(from, to);
-        valueAnimator.setDuration(duration);
+        valueAnimator.setDuration(AudioReactor.DUCK_DURATION);
         valueAnimator.addListener(new AnimatorListenerAdapter() {
             @Override
             public void onAnimationStart(Animator animation) {

app/src/main/java/org/schabi/newpipe/player/helper/CacheFactory.java

@@ -4,12 +4,9 @@ import android.content.Context;
 import android.support.annotation.NonNull;
 import android.util.Log;
 
-import com.google.android.exoplayer2.upstream.BandwidthMeter;
 import com.google.android.exoplayer2.upstream.DataSource;
-import com.google.android.exoplayer2.upstream.DefaultBandwidthMeter;
 import com.google.android.exoplayer2.upstream.DefaultDataSource;
 import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
-import com.google.android.exoplayer2.upstream.DefaultHttpDataSource;
 import com.google.android.exoplayer2.upstream.FileDataSource;
 import com.google.android.exoplayer2.upstream.TransferListener;
 import com.google.android.exoplayer2.upstream.cache.CacheDataSink;
@@ -17,8 +14,6 @@ import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
 import com.google.android.exoplayer2.upstream.cache.LeastRecentlyUsedCacheEvictor;
 import com.google.android.exoplayer2.upstream.cache.SimpleCache;
 
-import org.schabi.newpipe.Downloader;
-
 import java.io.File;
 
 /* package-private */ class CacheFactory implements DataSource.Factory {

app/src/main/java/org/schabi/newpipe/player/helper/PlaybackParameterDialog.java

@@ -66,25 +66,15 @@ public class PlaybackParameterDialog extends DialogFragment {
     private double stepSize = DEFAULT_STEP;
 
     @Nullable private SeekBar tempoSlider;
-    @Nullable private TextView tempoMinimumText;
-    @Nullable private TextView tempoMaximumText;
     @Nullable private TextView tempoCurrentText;
     @Nullable private TextView tempoStepDownText;
     @Nullable private TextView tempoStepUpText;
 
     @Nullable private SeekBar pitchSlider;
-    @Nullable private TextView pitchMinimumText;
-    @Nullable private TextView pitchMaximumText;
     @Nullable private TextView pitchCurrentText;
     @Nullable private TextView pitchStepDownText;
     @Nullable private TextView pitchStepUpText;
 
-    @Nullable private TextView stepSizeOnePercentText;
-    @Nullable private TextView stepSizeFivePercentText;
-    @Nullable private TextView stepSizeTenPercentText;
-    @Nullable private TextView stepSizeTwentyFivePercentText;
-    @Nullable private TextView stepSizeOneHundredPercentText;
-
     @Nullable private CheckBox unhookingCheckbox;
     @Nullable private CheckBox skipSilenceCheckbox;
 
@@ -181,8 +171,8 @@ public class PlaybackParameterDialog extends DialogFragment {
 
     private void setupTempoControl(@NonNull View rootView) {
         tempoSlider = rootView.findViewById(R.id.tempoSeekbar);
-        tempoMinimumText = rootView.findViewById(R.id.tempoMinimumText);
+        TextView tempoMinimumText = rootView.findViewById(R.id.tempoMinimumText);
-        tempoMaximumText = rootView.findViewById(R.id.tempoMaximumText);
+        TextView tempoMaximumText = rootView.findViewById(R.id.tempoMaximumText);
         tempoCurrentText = rootView.findViewById(R.id.tempoCurrentText);
         tempoStepUpText = rootView.findViewById(R.id.tempoStepUp);
         tempoStepDownText = rootView.findViewById(R.id.tempoStepDown);
@@ -203,8 +193,8 @@ public class PlaybackParameterDialog extends DialogFragment {
 
     private void setupPitchControl(@NonNull View rootView) {
         pitchSlider = rootView.findViewById(R.id.pitchSeekbar);
-        pitchMinimumText = rootView.findViewById(R.id.pitchMinimumText);
+        TextView pitchMinimumText = rootView.findViewById(R.id.pitchMinimumText);
-        pitchMaximumText = rootView.findViewById(R.id.pitchMaximumText);
+        TextView pitchMaximumText = rootView.findViewById(R.id.pitchMaximumText);
         pitchCurrentText = rootView.findViewById(R.id.pitchCurrentText);
         pitchStepDownText = rootView.findViewById(R.id.pitchStepDown);
         pitchStepUpText = rootView.findViewById(R.id.pitchStepUp);
@@ -247,11 +237,11 @@ public class PlaybackParameterDialog extends DialogFragment {
     }
 
     private void setupStepSizeSelector(@NonNull final View rootView) {
-        stepSizeOnePercentText = rootView.findViewById(R.id.stepSizeOnePercent);
+        TextView stepSizeOnePercentText = rootView.findViewById(R.id.stepSizeOnePercent);
-        stepSizeFivePercentText = rootView.findViewById(R.id.stepSizeFivePercent);
+        TextView stepSizeFivePercentText = rootView.findViewById(R.id.stepSizeFivePercent);
-        stepSizeTenPercentText = rootView.findViewById(R.id.stepSizeTenPercent);
+        TextView stepSizeTenPercentText = rootView.findViewById(R.id.stepSizeTenPercent);
-        stepSizeTwentyFivePercentText = rootView.findViewById(R.id.stepSizeTwentyFivePercent);
+        TextView stepSizeTwentyFivePercentText = rootView.findViewById(R.id.stepSizeTwentyFivePercent);
-        stepSizeOneHundredPercentText = rootView.findViewById(R.id.stepSizeOneHundredPercent);
+        TextView stepSizeOneHundredPercentText = rootView.findViewById(R.id.stepSizeOneHundredPercent);
 
         if (stepSizeOnePercentText != null) {
             stepSizeOnePercentText.setText(getPercentString(STEP_ONE_PERCENT_VALUE));

app/src/main/java/org/schabi/newpipe/player/helper/PlayerHelper.java

@@ -203,7 +203,7 @@ public class PlayerHelper {
 
     @NonNull
     public static SeekParameters getSeekParameters(@NonNull final Context context) {
-        return isUsingInexactSeek(context, false) ?
+        return isUsingInexactSeek(context) ?
                 SeekParameters.CLOSEST_SYNC : SeekParameters.EXACT;
     }
 
@@ -318,8 +318,8 @@ public class PlayerHelper {
         return getPreferences(context).getBoolean(context.getString(R.string.popup_remember_size_pos_key), b);
     }
 
-    private static boolean isUsingInexactSeek(@NonNull final Context context, final boolean b) {
+    private static boolean isUsingInexactSeek(@NonNull final Context context) {
-        return getPreferences(context).getBoolean(context.getString(R.string.use_inexact_seek_key), b);
+        return getPreferences(context).getBoolean(context.getString(R.string.use_inexact_seek_key), false);
     }
 
     private static boolean isAutoQueueEnabled(@NonNull final Context context, final boolean b) {

app/src/main/java/org/schabi/newpipe/player/mediasession/PlayQueueNavigator.java

@@ -79,7 +79,7 @@ public class PlayQueueNavigator implements MediaSessionConnector.QueueNavigator
 
     private void publishFloatingQueueWindow() {
         if (callback.getQueueSize() == 0) {
-            mediaSession.setQueue(Collections.<MediaSessionCompat.QueueItem>emptyList());
+            mediaSession.setQueue(Collections.emptyList());
             activeQueueItemId = MediaSessionCompat.QueueItem.UNKNOWN_ID;
             return;
         }

app/src/main/java/org/schabi/newpipe/player/playback/BasePlayerMediaSession.java

@@ -8,7 +8,7 @@ import org.schabi.newpipe.player.mediasession.MediaSessionCallback;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
 
 public class BasePlayerMediaSession implements MediaSessionCallback {
-    private BasePlayer player;
+    private final BasePlayer player;
 
     public BasePlayerMediaSession(final BasePlayer player) {
         this.player = player;

app/src/main/java/org/schabi/newpipe/player/playback/CustomTrackSelector.java

@@ -4,7 +4,6 @@ import android.support.annotation.NonNull;
 import android.text.TextUtils;
 
 import com.google.android.exoplayer2.C;
-import com.google.android.exoplayer2.ExoPlaybackException;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.source.TrackGroup;
 import com.google.android.exoplayer2.source.TrackGroupArray;
@@ -12,7 +11,6 @@ import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
 import com.google.android.exoplayer2.trackselection.FixedTrackSelection;
 import com.google.android.exoplayer2.trackselection.TrackSelection;
 import com.google.android.exoplayer2.util.Assertions;
-import com.google.android.exoplayer2.util.Util;
 
 /**
  * This class allows irregular text language labels for use when selecting text captions and
@@ -55,7 +53,7 @@ public class CustomTrackSelector extends DefaultTrackSelector {
     /** @see DefaultTrackSelector#selectTextTrack(TrackGroupArray, int[][], Parameters) */
     @Override
     protected TrackSelection selectTextTrack(TrackGroupArray groups, int[][] formatSupport,
-                                             Parameters params) throws ExoPlaybackException {
+                                             Parameters params) {
         TrackGroup selectedGroup = null;
         int selectedTrackIndex = 0;
         int selectedTrackScore = 0;

app/src/main/java/org/schabi/newpipe/player/playback/MediaSourceManager.java

@@ -335,7 +335,7 @@ public class MediaSourceManager {
 
     private void loadImmediate() {
         if (DEBUG) Log.d(TAG, "MediaSource - loadImmediate() called");
-        final ItemsToLoad itemsToLoad = getItemsToLoad(playQueue, WINDOW_SIZE);
+        final ItemsToLoad itemsToLoad = getItemsToLoad(playQueue);
         if (itemsToLoad == null) return;
 
         // Evict the previous items being loaded to free up memory, before start loading new ones
@@ -472,8 +472,7 @@ public class MediaSourceManager {
     // Manager Helpers
     //////////////////////////////////////////////////////////////////////////*/
     @Nullable
-    private static ItemsToLoad getItemsToLoad(@NonNull final PlayQueue playQueue,
+    private static ItemsToLoad getItemsToLoad(@NonNull final PlayQueue playQueue) {
-                                              final int windowSize) {
         // The current item has higher priority
         final int currentIndex = playQueue.getIndex();
         final PlayQueueItem currentItem = playQueue.getItem(currentIndex);
@@ -482,8 +481,8 @@ public class MediaSourceManager {
         // The rest are just for seamless playback
         // Although timeline is not updated prior to the current index, these sources are still
         // loaded into the cache for faster retrieval at a potentially later time.
-        final int leftBound = Math.max(0, currentIndex - windowSize);
+        final int leftBound = Math.max(0, currentIndex - MediaSourceManager.WINDOW_SIZE);
-        final int rightLimit = currentIndex + windowSize + 1;
+        final int rightLimit = currentIndex + MediaSourceManager.WINDOW_SIZE + 1;
         final int rightBound = Math.min(playQueue.size(), rightLimit);
         final Set<PlayQueueItem> neighbors = new ArraySet<>(
                 playQueue.getStreams().subList(leftBound,rightBound));

app/src/main/java/org/schabi/newpipe/player/playback/PlaybackListener.java

@@ -8,8 +8,6 @@ import com.google.android.exoplayer2.source.MediaSource;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
 
-import java.util.List;
-
 public interface PlaybackListener {
 
     /**

app/src/main/java/org/schabi/newpipe/player/playqueue/AbstractInfoPlayQueue.java

@@ -19,14 +19,14 @@ abstract class AbstractInfoPlayQueue<T extends ListInfo, U extends InfoItem> ext
     boolean isInitial;
     boolean isComplete;
 
-    int serviceId;
+    final int serviceId;
-    String baseUrl;
+    final String baseUrl;
     String nextUrl;
 
     transient Disposable fetchReactor;
 
     AbstractInfoPlayQueue(final U item) {
-        this(item.getServiceId(), item.getUrl(), null, Collections.<StreamInfoItem>emptyList(), 0);
+        this(item.getServiceId(), item.getUrl(), null, Collections.emptyList(), 0);
     }
 
     AbstractInfoPlayQueue(final int serviceId,

app/src/main/java/org/schabi/newpipe/player/playqueue/PlayQueueItemBuilder.java

@@ -5,10 +5,8 @@ import android.text.TextUtils;
 import android.view.MotionEvent;
 import android.view.View;
 
-import com.nostra13.universalimageloader.core.DisplayImageOptions;
 import com.nostra13.universalimageloader.core.ImageLoader;
 
-import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.util.ImageDisplayConstants;
 import org.schabi.newpipe.util.Localization;

app/src/main/java/org/schabi/newpipe/player/playqueue/PlayQueueItemHolder.java

@@ -6,8 +6,6 @@ import android.widget.ImageView;
 import android.widget.TextView;
 
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.info_list.holder.InfoItemHolder;
 
 /**
  * Created by Christian Schabesberger on 01.08.16.

app/src/main/java/org/schabi/newpipe/report/AcraReportSender.java

@@ -5,7 +5,6 @@ import android.support.annotation.NonNull;
 
 import org.acra.collector.CrashReportData;
 import org.acra.sender.ReportSender;
-import org.acra.sender.ReportSenderException;
 import org.schabi.newpipe.R;
 
 /*
@@ -31,7 +30,7 @@ import org.schabi.newpipe.R;
 public class AcraReportSender implements ReportSender {
 
     @Override
-    public void send(@NonNull Context context, @NonNull CrashReportData report) throws ReportSenderException {
+    public void send(@NonNull Context context, @NonNull CrashReportData report) {
         ErrorActivity.reportError(context, report,
                 ErrorActivity.ErrorInfo.make(UserAction.UI_ERROR,"none",
                         "App crash, UI failure", R.string.app_ui_crash));

app/src/main/java/org/schabi/newpipe/report/ErrorActivity.java

@@ -3,7 +3,6 @@ package org.schabi.newpipe.report;
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.graphics.Color;
 import android.net.Uri;
@@ -46,7 +45,6 @@ import java.util.Date;
 import java.util.List;
 import java.util.TimeZone;
 import java.util.Vector;
-import java.util.concurrent.atomic.AtomicBoolean;
 
 /*
  * Created by Christian Schabesberger on 24.10.15.
@@ -81,12 +79,7 @@ public class ErrorActivity extends AppCompatActivity {
     private ErrorInfo errorInfo;
     private Class returnActivity;
     private String currentTimeStamp;
-    // views
-    private TextView errorView;
     private EditText userCommentBox;
-    private Button reportButton;
-    private TextView infoView;
-    private TextView errorMessageView;
 
     public static void reportUiError(final AppCompatActivity activity, final Throwable el) {
         reportError(activity, el, activity.getClass(), null,
@@ -194,11 +187,11 @@ public class ErrorActivity extends AppCompatActivity {
             actionBar.setDisplayShowTitleEnabled(true);
         }
 
-        reportButton = findViewById(R.id.errorReportButton);
+        Button reportButton = findViewById(R.id.errorReportButton);
         userCommentBox = findViewById(R.id.errorCommentBox);
-        errorView = findViewById(R.id.errorView);
+        TextView errorView = findViewById(R.id.errorView);
-        infoView = findViewById(R.id.errorInfosView);
+        TextView infoView = findViewById(R.id.errorInfosView);
-        errorMessageView = findViewById(R.id.errorMessageView);
+        TextView errorMessageView = findViewById(R.id.errorMessageView);
 
         ActivityCommunicator ac = ActivityCommunicator.getCommunicator();
         returnActivity = ac.returnActivity;
@@ -281,15 +274,14 @@ public class ErrorActivity extends AppCompatActivity {
     }
 
     private String formErrorText(String[] el) {
-        String text = "";
+        StringBuilder text = new StringBuilder();
         if (el != null) {
             for (String e : el) {
-                text += "-------------------------------------\n"
+                text.append("-------------------------------------\n").append(e);
-                        + e;
             }
         }
-        text += "-------------------------------------";
+        text.append("-------------------------------------");
-        return text;
+        return text.toString();
     }
 
     /**

app/src/main/java/org/schabi/newpipe/settings/AppearanceSettingsFragment.java

@@ -6,7 +6,6 @@ import android.os.Bundle;
 import android.provider.Settings;
 import android.support.annotation.Nullable;
 import android.support.v7.preference.Preference;
-import android.util.Log;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.util.Constants;
@@ -49,7 +48,7 @@ public class AppearanceSettingsFragment extends BasePreferenceFragment {
         return super.onPreferenceTreeClick(preference);
     }
 
-    private Preference.OnPreferenceChangeListener themePreferenceChange = new Preference.OnPreferenceChangeListener() {
+    private final Preference.OnPreferenceChangeListener themePreferenceChange = new Preference.OnPreferenceChangeListener() {
         @Override
         public boolean onPreferenceChange(Preference preference, Object newValue) {
             defaultPreferences.edit().putBoolean(Constants.KEY_THEME_CHANGE, true).apply();

app/src/main/java/org/schabi/newpipe/settings/BasePreferenceFragment.java

@@ -13,7 +13,7 @@ import org.schabi.newpipe.MainActivity;
 
 public abstract class BasePreferenceFragment extends PreferenceFragmentCompat {
     protected final String TAG = getClass().getSimpleName() + "@" + Integer.toHexString(hashCode());
-    protected boolean DEBUG = MainActivity.DEBUG;
+    protected final boolean DEBUG = MainActivity.DEBUG;
 
     protected SharedPreferences defaultPreferences;
 

app/src/main/java/org/schabi/newpipe/settings/ContentSettingsFragment.java

@@ -9,8 +9,6 @@ import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.v4.app.Fragment;
-import android.support.v7.preference.ListPreference;
 import android.support.v7.preference.Preference;
 import android.util.Log;
 import android.widget.Toast;
@@ -19,12 +17,9 @@ import com.nononsenseapps.filepicker.Utils;
 import com.nostra13.universalimageloader.core.ImageLoader;
 
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.util.FilePickerActivityHelper;
-import org.schabi.newpipe.util.KioskTranslator;
 import org.schabi.newpipe.util.ZipHelper;
 
 import java.io.BufferedOutputStream;
@@ -47,7 +42,6 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
     private static final int REQUEST_IMPORT_PATH = 8945;
     private static final int REQUEST_EXPORT_PATH = 30945;
 
-    private String homeDir;
     private File databasesDir;
     private File newpipe_db;
     private File newpipe_db_journal;
@@ -81,7 +75,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
     @Override
     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
 
-        homeDir = getActivity().getApplicationInfo().dataDir;
+        String homeDir = getActivity().getApplicationInfo().dataDir;
         databasesDir = new File(homeDir + "/databases");
         newpipe_db = new File(homeDir + "/databases/newpipe.db");
         newpipe_db_journal = new File(homeDir + "/databases/newpipe.db-journal");
@@ -193,7 +187,7 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
         } finally {
             try {
                 zipFile.close();
-            } catch (Exception e){}
+            } catch (Exception ignored){}
         }
 
         try {
@@ -254,17 +248,17 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
                 String key = entry.getKey();
 
                 if (v instanceof Boolean)
-                    prefEdit.putBoolean(key, ((Boolean) v).booleanValue());
+                    prefEdit.putBoolean(key, (Boolean) v);
                 else if (v instanceof Float)
-                    prefEdit.putFloat(key, ((Float) v).floatValue());
+                    prefEdit.putFloat(key, (Float) v);
                 else if (v instanceof Integer)
-                    prefEdit.putInt(key, ((Integer) v).intValue());
+                    prefEdit.putInt(key, (Integer) v);
                 else if (v instanceof Long)
-                    prefEdit.putLong(key, ((Long) v).longValue());
+                    prefEdit.putLong(key, (Long) v);
                 else if (v instanceof String)
                     prefEdit.putString(key, ((String) v));
             }
-            prefEdit.commit();
+            prefEdit.apply();
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (IOException e) {
@@ -286,13 +280,12 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
     // Error
     //////////////////////////////////////////////////////////////////////////*/
 
-    protected boolean onError(Throwable e) {
+    protected void onError(Throwable e) {
         final Activity activity = getActivity();
         ErrorActivity.reportError(activity, e,
                 activity.getClass(),
                 null,
                 ErrorActivity.ErrorInfo.make(UserAction.UI_ERROR,
                         "none", "", R.string.app_ui_crash));
-        return true;
     }
 }

app/src/main/java/org/schabi/newpipe/settings/HistorySettingsFragment.java

@@ -1,29 +1,20 @@
 package org.schabi.newpipe.settings;
 
-import android.content.DialogInterface;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
-import android.support.design.widget.Snackbar;
 import android.support.v7.app.AlertDialog;
 import android.support.v7.preference.Preference;
-import android.util.Log;
 import android.widget.Toast;
 
-import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.local.history.HistoryRecordManager;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.util.InfoCache;
 
-import java.util.ArrayList;
-import java.util.Collection;
-
-import io.reactivex.Single;
 import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.disposables.CompositeDisposable;
 import io.reactivex.disposables.Disposable;
-import io.reactivex.disposables.Disposables;
 
 public class HistorySettingsFragment extends BasePreferenceFragment {
     private String cacheWipeKey;

app/src/main/java/org/schabi/newpipe/settings/SelectChannelFragment.java

@@ -51,9 +51,7 @@ import io.reactivex.schedulers.Schedulers;
  */
 
 public class SelectChannelFragment extends DialogFragment {
-    private SelectChannelAdapter channelAdapter;
+    private final ImageLoader imageLoader = ImageLoader.getInstance();
-    private SubscriptionService subscriptionService;
-    private ImageLoader imageLoader = ImageLoader.getInstance();
 
     private ProgressBar progressBar;
     private TextView emptyView;
@@ -89,9 +87,9 @@ public class SelectChannelFragment extends DialogFragment {
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View v = inflater.inflate(R.layout.select_channel_fragment, container, false);
-        recyclerView = (RecyclerView) v.findViewById(R.id.items_list);
+        recyclerView = v.findViewById(R.id.items_list);
         recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
-        channelAdapter = new SelectChannelAdapter();
+        SelectChannelAdapter channelAdapter = new SelectChannelAdapter();
         recyclerView.setAdapter(channelAdapter);
 
         progressBar = v.findViewById(R.id.progressBar);
@@ -101,7 +99,7 @@ public class SelectChannelFragment extends DialogFragment {
         emptyView.setVisibility(View.GONE);
 
 
-        subscriptionService = SubscriptionService.getInstance(getContext());
+        SubscriptionService subscriptionService = SubscriptionService.getInstance(getContext());
         subscriptionService.getSubscription().toObservable()
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
@@ -203,9 +201,9 @@ public class SelectChannelFragment extends DialogFragment {
                 thumbnailView = v.findViewById(R.id.itemThumbnailView);
                 titleView = v.findViewById(R.id.itemTitleView);
             }
-            public View view;
+            public final View view;
-            public CircleImageView thumbnailView;
+            public final CircleImageView thumbnailView;
-            public TextView titleView;
+            public final TextView titleView;
         }
     }
 
@@ -213,14 +211,13 @@ public class SelectChannelFragment extends DialogFragment {
     // Error
     //////////////////////////////////////////////////////////////////////////*/
 
-    protected boolean onError(Throwable e) {
+    protected void onError(Throwable e) {
         final Activity activity = getActivity();
         ErrorActivity.reportError(activity, e,
                 activity.getClass(),
                 null,
                 ErrorActivity.ErrorInfo.make(UserAction.UI_ERROR,
                         "none", "", R.string.app_ui_crash));
-        return true;
     }
 
 

app/src/main/java/org/schabi/newpipe/settings/SelectKioskFragment.java

@@ -75,7 +75,7 @@ public class SelectKioskFragment extends DialogFragment {
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View v = inflater.inflate(R.layout.select_kiosk_fragment, container, false);
-        recyclerView = (RecyclerView) v.findViewById(R.id.items_list);
+        recyclerView = v.findViewById(R.id.items_list);
         recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
         try {
             selectKioskAdapter = new SelectKioskAdapter();
@@ -112,13 +112,13 @@ public class SelectKioskFragment extends DialogFragment {
             public Entry (int i, int si, String ki, String kn){
                 icon = i; serviceId=si; kioskId=ki; kioskName = kn;
             }
-            int icon;
+            final int icon;
-            int serviceId;
+            final int serviceId;
-            String kioskId;
+            final String kioskId;
-            String kioskName;
+            final String kioskName;
         }
 
-        private List<Entry> kioskList = new Vector<>();
+        private final List<Entry> kioskList = new Vector<>();
 
         public SelectKioskAdapter()
                 throws Exception {
@@ -157,9 +157,9 @@ public class SelectKioskFragment extends DialogFragment {
                 thumbnailView = v.findViewById(R.id.itemThumbnailView);
                 titleView = v.findViewById(R.id.itemTitleView);
             }
-            public View view;
+            public final View view;
-            public ImageView thumbnailView;
+            public final ImageView thumbnailView;
-            public TextView titleView;
+            public final TextView titleView;
         }
 
         public void onBindViewHolder(SelectKioskItemHolder holder, final int position) {
@@ -179,13 +179,12 @@ public class SelectKioskFragment extends DialogFragment {
     // Error
     //////////////////////////////////////////////////////////////////////////*/
 
-    protected boolean onError(Throwable e) {
+    protected void onError(Throwable e) {
         final Activity activity = getActivity();
         ErrorActivity.reportError(activity, e,
                 activity.getClass(),
                 null,
                 ErrorActivity.ErrorInfo.make(UserAction.UI_ERROR,
                         "none", "", R.string.app_ui_crash));
-        return true;
     }
 }

app/src/main/java/org/schabi/newpipe/util/ExtractorHelper.java

@@ -183,7 +183,7 @@ public final class ExtractorHelper {
             cache.removeInfo(serviceId, url);
             load = loadFromNetwork;
         } else {
-            load = Maybe.concat(ExtractorHelper.<I>loadFromCache(serviceId, url),
+            load = Maybe.concat(ExtractorHelper.loadFromCache(serviceId, url),
                     loadFromNetwork.toMaybe())
                     .firstElement() //Take the first valid
                     .toSingle();

app/src/main/java/org/schabi/newpipe/util/InfoCache.java

@@ -28,9 +28,6 @@ import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.extractor.Info;
 
 import java.util.Map;
-import java.util.concurrent.TimeUnit;
-
-import static org.schabi.newpipe.extractor.ServiceList.SoundCloud;
 
 
 public final class InfoCache {
@@ -58,7 +55,7 @@ public final class InfoCache {
     public Info getFromKey(int serviceId, @NonNull String url) {
         if (DEBUG) Log.d(TAG, "getFromKey() called with: serviceId = [" + serviceId + "], url = [" + url + "]");
         synchronized (lruCache) {
-            return getInfo(lruCache, keyOf(serviceId, url));
+            return getInfo(keyOf(serviceId, url));
         }
     }
 
@@ -89,7 +86,7 @@ public final class InfoCache {
     public void trimCache() {
         if (DEBUG) Log.d(TAG, "trimCache() called");
         synchronized (lruCache) {
-            removeStaleCache(lruCache);
+            removeStaleCache();
             lruCache.trimToSize(TRIM_CACHE_TO);
         }
     }
@@ -105,23 +102,22 @@ public final class InfoCache {
         return serviceId + url;
     }
 
-    private static void removeStaleCache(@NonNull final LruCache<String, CacheData> cache) {
+    private static void removeStaleCache() {
-        for (Map.Entry<String, CacheData> entry : cache.snapshot().entrySet()) {
+        for (Map.Entry<String, CacheData> entry : InfoCache.lruCache.snapshot().entrySet()) {
             final CacheData data = entry.getValue();
             if (data != null && data.isExpired()) {
-                cache.remove(entry.getKey());
+                InfoCache.lruCache.remove(entry.getKey());
             }
         }
     }
 
     @Nullable
-    private static Info getInfo(@NonNull final LruCache<String, CacheData> cache,
+    private static Info getInfo(@NonNull final String key) {
-                                @NonNull final String key) {
+        final CacheData data = InfoCache.lruCache.get(key);
-        final CacheData data = cache.get(key);
         if (data == null) return null;
 
         if (data.isExpired()) {
-            cache.remove(key);
+            InfoCache.lruCache.remove(key);
             return null;
         }
 

app/src/main/java/org/schabi/newpipe/util/ListHelper.java

@@ -204,7 +204,7 @@ public final class ListHelper {
      */
     private static void sortStreamList(List<VideoStream> videoStreams, final boolean ascendingOrder) {
         Collections.sort(videoStreams, (o1, o2) -> {
-            int result = compareVideoStreamResolution(o1, o2, VIDEO_FORMAT_QUALITY_RANKING);
+            int result = compareVideoStreamResolution(o1, o2);
             return result == 0 ? 0 : (ascendingOrder ? result : -result);
         });
     }
@@ -399,8 +399,7 @@ public final class ListHelper {
     }
 
     // Compares the quality of two video streams.
-    private static int compareVideoStreamResolution(VideoStream streamA, VideoStream streamB,
+    private static int compareVideoStreamResolution(VideoStream streamA, VideoStream streamB) {
-                                                    List<MediaFormat> formatRanking) {
         if (streamA == null) {
             return -1;
         }
@@ -414,7 +413,7 @@ public final class ListHelper {
         }
 
         // Same bitrate and format
-        return formatRanking.indexOf(streamA.getFormat()) - formatRanking.indexOf(streamB.getFormat());
+        return ListHelper.VIDEO_FORMAT_QUALITY_RANKING.indexOf(streamA.getFormat()) - ListHelper.VIDEO_FORMAT_QUALITY_RANKING.indexOf(streamB.getFormat());
     }
 
 

app/src/main/java/org/schabi/newpipe/util/NavigationHelper.java

@@ -26,7 +26,6 @@ import org.schabi.newpipe.download.DownloadActivity;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
-import org.schabi.newpipe.extractor.search.SearchExtractor;
 import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.stream.Stream;
 import org.schabi.newpipe.extractor.stream.StreamInfo;

app/src/main/java/org/schabi/newpipe/util/StateSaver.java

@@ -21,7 +21,6 @@ package org.schabi.newpipe.util;
 
 
 import android.content.Context;
-import android.os.Build;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;

app/src/main/java/org/schabi/newpipe/util/StreamItemAdapter.java

@@ -31,7 +31,7 @@ import us.shandian.giga.util.Utility;
 public class StreamItemAdapter<T extends Stream> extends BaseAdapter {
     private final Context context;
 
-    private StreamSizeWrapper<T> streamsWrapper;
+    private final StreamSizeWrapper<T> streamsWrapper;
     private final boolean showIconNoAudio;
 
     public StreamItemAdapter(Context context, StreamSizeWrapper<T> streamsWrapper, boolean showIconNoAudio) {
@@ -124,7 +124,7 @@ public class StreamItemAdapter<T extends Stream> extends BaseAdapter {
     public static class StreamSizeWrapper<T extends Stream> implements Serializable {
         private static final StreamSizeWrapper<Stream> EMPTY = new StreamSizeWrapper<>(Collections.emptyList());
         private final List<T> streamsList;
-        private long[] streamSizes;
+        private final long[] streamSizes;
 
         public StreamSizeWrapper(List<T> streamsList) {
             this.streamsList = streamsList;

app/src/main/java/org/schabi/newpipe/util/ZipHelper.java

@@ -56,7 +56,6 @@ public class ZipHelper {
     /**
      * This will extract data from Zipfiles.
      * Caution this will override the original file.
-     * @param inZip The ZipOutputStream where the data is stored in
      * @param file The path of the file on the disk where the data should be extracted to.
      * @param name The path of the file inside the zip.
      * @return will return true if the file was found within the zip file

app/src/main/java/org/schabi/newpipe/views/CollapsibleView.java

@@ -81,7 +81,7 @@ public class CollapsibleView extends LinearLayout {
 
     private int targetHeight = -1;
     private ValueAnimator currentAnimator;
-    private List<StateListener> listeners = new ArrayList<>();
+    private final List<StateListener> listeners = new ArrayList<>();
 
     /**
      * This method recalculates the height of this view so it <b>must</b> be called when

app/src/main/java/us/shandian/giga/get/DownloadManagerImpl.java

@@ -123,7 +123,7 @@ public class DownloadManagerImpl implements DownloadManager {
         Collections.sort(missions, new Comparator<DownloadMission>() {
             @Override
             public int compare(DownloadMission o1, DownloadMission o2) {
-                return Long.valueOf(o1.timestamp).compareTo(o2.timestamp);
+                return Long.compare(o1.timestamp, o2.timestamp);
             }
         });
     }

app/src/main/java/us/shandian/giga/get/DownloadMission.java

@@ -67,8 +67,8 @@ public class DownloadMission implements Serializable {
     public long done;
     public int threadCount = 3;
     public int finishCount;
-    private List<Long> threadPositions = new ArrayList<Long>();
+    private final List<Long> threadPositions = new ArrayList<>();
-    public final Map<Long, Boolean> blockState = new HashMap<Long, Boolean>();
+    public final Map<Long, Boolean> blockState = new HashMap<>();
     public boolean running;
     public boolean finished;
     public boolean fallback;
@@ -77,7 +77,7 @@ public class DownloadMission implements Serializable {
 
     public transient boolean recovered;
 
-    private transient ArrayList<WeakReference<MissionListener>> mListeners = new ArrayList<WeakReference<MissionListener>>();
+    private transient ArrayList<WeakReference<MissionListener>> mListeners = new ArrayList<>();
     private transient boolean mWritingToFile;
 
     private static final int NO_IDENTIFIER = -1;
@@ -232,7 +232,7 @@ public class DownloadMission implements Serializable {
     public synchronized void addListener(MissionListener listener) {
         Handler handler = new Handler(Looper.getMainLooper());
         MissionListener.handlerStore.put(listener, handler);
-        mListeners.add(new WeakReference<MissionListener>(listener));
+        mListeners.add(new WeakReference<>(listener));
     }
 
     public synchronized void removeListener(MissionListener listener) {

app/src/main/java/us/shandian/giga/get/DownloadRunnable.java

@@ -92,7 +92,7 @@ public class DownloadRunnable implements Runnable {
                 // A server may be ignoring the range request
                 if (conn.getResponseCode() != 206) {
                     mMission.errCode = DownloadMission.ERROR_SERVER_UNSUPPORTED;
-                    notifyError(DownloadMission.ERROR_SERVER_UNSUPPORTED);
+                    notifyError();
 
                     if (DEBUG) {
                         Log.e(TAG, mId + ":Unsupported " + conn.getResponseCode());
@@ -161,9 +161,9 @@ public class DownloadRunnable implements Runnable {
         }
     }
 
-    private void notifyError(final int err) {
+    private void notifyError() {
         synchronized (mMission) {
-            mMission.notifyError(err);
+            mMission.notifyError(DownloadMission.ERROR_SERVER_UNSUPPORTED);
             mMission.pause();
         }
     }

app/src/main/java/us/shandian/giga/service/DownloadManagerService.java

@@ -56,7 +56,7 @@ public class DownloadManagerService extends Service {
     private DownloadDataSource mDataSource;
 
 
-    private MissionListener missionListener = new MissionListener();
+    private final MissionListener missionListener = new MissionListener();
 
 
     private void notifyMediaScanner(DownloadMission mission) {

app/src/main/java/us/shandian/giga/ui/adapter/MissionAdapter.java

@@ -306,12 +306,12 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
         public DownloadMission mission;
         public int position;
 
-        public TextView status;
+        public final TextView status;
-        public ImageView icon;
+        public final ImageView icon;
-        public TextView name;
+        public final TextView name;
-        public TextView size;
+        public final TextView size;
-        public View bkg;
+        public final View bkg;
-        public ImageView menu;
+        public final ImageView menu;
         public ProgressDrawable progress;
         public MissionObserver observer;
 
@@ -332,8 +332,8 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
     }
 
     static class MissionObserver implements DownloadMission.MissionListener {
-        private MissionAdapter mAdapter;
+        private final MissionAdapter mAdapter;
-        private ViewHolder mHolder;
+        private final ViewHolder mHolder;
 
         public MissionObserver(MissionAdapter adapter, ViewHolder holder) {
             mAdapter = adapter;
@@ -365,7 +365,7 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
 
     private static class ChecksumTask extends AsyncTask<String, Void, String> {
         ProgressDialog prog;
-        WeakReference<Activity> weakReference;
+        final WeakReference<Activity> weakReference;
 
         ChecksumTask(@NonNull Activity activity) {
             weakReference = new WeakReference<>(activity);

app/src/main/java/us/shandian/giga/ui/common/ProgressDrawable.java

@@ -12,7 +12,8 @@ import android.support.v4.content.ContextCompat;
 
 public class ProgressDrawable extends Drawable {
     private float mProgress;
-    private int mBackgroundColor, mForegroundColor;
+    private final int mBackgroundColor;
+    private final int mForegroundColor;
 
     public ProgressDrawable(Context context, @ColorRes int background, @ColorRes int foreground) {
         this(ContextCompat.getColor(context, background), ContextCompat.getColor(context, foreground));

app/src/main/java/us/shandian/giga/ui/fragment/MissionsFragment.java

@@ -16,6 +16,8 @@ import android.support.v7.widget.GridLayoutManager;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
@@ -44,7 +46,7 @@ public abstract class MissionsFragment extends Fragment {
     private DeleteDownloadManager mDeleteDownloadManager;
     private Disposable mDeleteDisposable;
 
-    private ServiceConnection mConnection = new ServiceConnection() {
+    private final ServiceConnection mConnection = new ServiceConnection() {
 
         @Override
         public void onServiceConnected(ComponentName name, IBinder binder) {
@@ -144,17 +146,21 @@ public abstract class MissionsFragment extends Fragment {
     }
 
     @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
+    public void onPrepareOptionsMenu(Menu menu) {
-        return super.onOptionsItemSelected(item);
+        mSwitch = menu.findItem(R.id.switch_mode);
+        super.onPrepareOptionsMenu(menu);
+    }
 
-		/*switch (item.getItemId()) {
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
             case R.id.switch_mode:
 				mLinear = !mLinear;
 				updateList();
 				return true;
 			default:
 				return super.onOptionsItemSelected(item);
-		}*/
+		}
     }
 
     public void notifyChange() {

app/src/main/java/us/shandian/giga/util/Utility.java

@@ -11,9 +11,7 @@ import android.widget.Toast;
 
 import org.schabi.newpipe.R;
 
-import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
-import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
@@ -198,7 +196,7 @@ public class Utility {
             while ((len = i.read(buf)) != -1) {
                 md.update(buf, 0, len);
             }
-        } catch (IOException e) {
+        } catch (IOException ignored) {
 
         }
 

app/src/main/res/layout-v21/drawer_header.xml

@@ -16,7 +16,8 @@
         android:layout_height="match_parent"
         android:background="?attr/colorPrimary"
         android:scaleType="centerCrop"
-        android:src="@drawable/background_header" />
+        android:src="@drawable/background_header"
+        android:contentDescription="TODO" />
 
     <ImageView
         android:id="@+id/drawer_header_np_nude_view"
@@ -26,7 +27,8 @@
 
         android:layout_marginStart="30dp"
         android:layout_marginTop="30dp"
-        android:src="@drawable/np_logo_nude_shadow" />
+        android:src="@drawable/np_logo_nude_shadow"
+        android:contentDescription="TODO" />
 
     <TextView
         android:id="@+id/drawer_header_np_text_view"
@@ -38,7 +40,7 @@
         android:layout_toRightOf="@id/drawer_header_np_nude_view"
         android:gravity="center"
         android:text="@string/app_name"
-        android:textSize="30dp"
+        android:textSize="30sp"
         android:textColor="@color/drawer_header_font_color"
         android:textStyle="bold|italic" />
 
@@ -50,7 +52,7 @@
         android:layout_alignStart="@id/drawer_header_np_text_view"
         android:layout_below="@id/drawer_header_np_text_view"
         android:text="YouTube"
-        android:textSize="18dp"
+        android:textSize="18sp"
         android:textColor="@color/drawer_header_font_color"
         android:textStyle="italic" />
 
@@ -66,6 +68,7 @@
         android:paddingBottom="20dp"
         android:paddingEnd="20dp"
         android:paddingRight="20dp"
-        android:src="@drawable/ic_arrow_down_white" />
+        android:src="@drawable/ic_arrow_down_white"
+        android:contentDescription="TODO" />
 
 </RelativeLayout>

app/src/main/res/layout/activity_error.xml

@@ -114,7 +114,8 @@
             <EditText
                 android:id="@+id/errorCommentBox"
                 android:layout_width="match_parent"
-                android:layout_height="wrap_content"/>
+                android:layout_height="wrap_content"
+                android:inputType="" />
 
             <Button
                 android:id="@+id/errorReportButton"

app/src/main/res/layout/drawer_header.xml

@@ -16,7 +16,8 @@ android:focusable="true">
         android:layout_height="match_parent"
         android:background="?attr/colorPrimary"
         android:src="@drawable/background_header"
-        android:scaleType="centerCrop"/>
+        android:scaleType="centerCrop"
+        android:contentDescription="TODO" />
 
     <ImageView
         android:id="@+id/drawer_header_np_nude_view"
@@ -26,7 +27,8 @@ android:focusable="true">
 
         android:layout_width="70dp"
         android:layout_height="70dp"
-        android:src="@drawable/np_logo_nude_shadow"/>
+        android:src="@drawable/np_logo_nude_shadow"
+        android:contentDescription="TODO" />
 
     <TextView
         android:id="@+id/drawer_header_np_text_view"
@@ -38,7 +40,7 @@ android:focusable="true">
         android:layout_alignTop="@id/drawer_header_np_nude_view"
         android:layout_alignBottom="@id/drawer_header_np_nude_view"
         android:gravity="center"
-        android:textSize="30dp"
+        android:textSize="30sp"
         android:textColor="@color/drawer_header_font_color"
         android:textStyle="bold|italic"/>
 
@@ -50,7 +52,7 @@ android:focusable="true">
         android:layout_below="@id/drawer_header_np_text_view"
         android:layout_alignLeft="@id/drawer_header_np_text_view"
         android:layout_alignStart="@id/drawer_header_np_text_view"
-        android:textSize="18dp"
+        android:textSize="18sp"
         android:textColor="@color/drawer_header_font_color"
         android:textStyle="italic"/>
 
@@ -66,6 +68,7 @@ android:focusable="true">
         android:paddingBottom="20dp"
         android:paddingRight="20dp"
         android:src="@drawable/ic_arrow_down_white"
-        android:paddingEnd="20dp" />
+        android:paddingEnd="20dp"
+        android:contentDescription="TODO" />
 
 </RelativeLayout>

app/src/main/res/layout/fragment_about.xml

@@ -21,7 +21,8 @@
             android:layout_height="wrap_content"
             android:layout_gravity="center_horizontal"
             android:layout_marginBottom="8dp"
-            app:srcCompat="@mipmap/ic_launcher" />
+            app:srcCompat="@mipmap/ic_launcher"
+            android:contentDescription="TODO" />
 
         <TextView
             android:id="@+id/app_name"

app/src/main/res/layout/item_search_history.xml

@@ -10,7 +10,8 @@
     android:paddingBottom="8dp"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
-    android:paddingTop="8dp">
+    android:paddingTop="8dp"
+    android:focusable="true">
 
     <TextView
         android:id="@+id/info"

app/src/main/res/layout/item_software_component.xml

@@ -7,7 +7,8 @@
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:orientation="vertical"
     android:background="?attr/selectableItemBackground"
-    android:clickable="true">
+    android:clickable="true"
+    android:focusable="true">
 
     <TextView
         android:id="@+id/name"

app/src/main/res/layout/mission_item.xml

@@ -38,7 +38,8 @@
 				android:layout_centerVertical="true"
 				android:layout_marginRight="1dp"
 				android:src="@drawable/ic_menu_more"
-				android:scaleType="centerInside"/>
+				android:scaleType="centerInside"
+                android:contentDescription="TODO" />
 			
 		</RelativeLayout>
 		
@@ -50,7 +51,8 @@
 			android:layout_centerHorizontal="true"
 			android:scaleType="fitXY"
 			android:gravity="center"
-			android:padding="10dp"/>
+			android:padding="10dp"
+            android:contentDescription="TODO" />
 		
 		<TextView
 			android:id="@+id/item_name"

app/src/main/res/layout/mission_item_linear.xml

@@ -9,7 +9,7 @@
 		android:layout_width="match_parent"
 		android:layout_margin="2dp"
 		android:background="@color/bluegray">
-		
+
 		<ImageView
 			android:id="@+id/item_icon"
 			android:layout_width="72dp"
@@ -17,66 +17,60 @@
 			android:layout_centerVertical="true"
 			android:scaleType="fitXY"
 			android:gravity="center"
-			android:padding="15dp"/>
+			android:padding="15dp"
-		
+            android:contentDescription="TODO" />
-		<LinearLayout
+
-			android:id="@+id/item_name_and_size"
+		<TextView
+			android:id="@+id/item_name"
 			android:layout_width="match_parent"
 			android:layout_height="wrap_content"
+			android:layout_toLeftOf="@+id/item_more"
 			android:layout_toRightOf="@id/item_icon"
-			android:layout_toLeftOf="@+id/item_status"
+			android:ellipsize="end"
-			android:layout_centerVertical="true"
+			android:padding="6dp"
-			android:orientation="vertical">
+			android:text="XXX.xx"
+			android:textColor="@color/white"
+			android:textSize="16sp"
+			android:textStyle="bold" />
 
-			<TextView
+		<TextView
-				android:id="@+id/item_name"
+			android:id="@+id/item_size"
-				android:layout_width="match_parent"
+			android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
+			android:layout_height="wrap_content"
-				android:padding="6dp"
+			android:layout_toRightOf="@id/item_icon"
-				android:singleLine="true"
+			android:layout_below="@+id/item_name"
-				android:ellipsize="end"
+			android:padding="6dp"
-				android:text="XXX.xx"
+			android:singleLine="true"
-				android:textSize="16sp"
+			android:text="100.00MB"
-				android:textStyle="bold"
+			android:textSize="12sp"
-				android:textColor="@color/white"/>
+			android:textColor="@color/white"/>
-
-			<TextView
-				android:id="@+id/item_size"
-				android:layout_width="match_parent"
-				android:layout_height="wrap_content"
-				android:layout_below="@id/item_name"
-				android:padding="6dp"
-				android:singleLine="true"
-				android:text="100.00MB"
-				android:textSize="12sp"
-				android:textColor="@color/white"/>
-		
-		</LinearLayout>
-		
 
 		<TextView
 			android:id="@+id/item_status"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
-			android:layout_toLeftOf="@+id/item_more"
+			android:layout_below="@+id/item_name"
-			android:layout_centerVertical="true"
 			android:layout_marginLeft="6dp"
-			android:layout_marginRight="6dp"
+			android:layout_marginRight="5dp"
+			android:layout_toLeftOf="@+id/item_more"
+			android:layout_toRightOf="@id/item_size"
+			android:padding="6dp"
 			android:singleLine="true"
 			android:text="0%"
-			android:textSize="20sp"
+			android:textColor="@color/white"
-			android:textColor="@color/white"/>
+			android:textSize="12sp" />
 
 		<ImageView
 			style="?attr/buttonBarButtonStyle"
 			android:id="@+id/item_more"
-			android:layout_width="36dp"
+			android:layout_width="49dp"
-			android:layout_height="36dp"
+			android:layout_height="49dp"
 			android:layout_alignParentRight="true"
 			android:layout_centerVertical="true"
 			android:layout_marginRight="4dp"
 			android:src="@drawable/ic_menu_more"
-			android:scaleType="centerInside"/>
+			android:scaleType="centerInside"
+            android:contentDescription="TODO" />
 
 	</RelativeLayout>
 

app/src/main/res/layout/select_channel_item.xml

@@ -6,7 +6,8 @@
     android:layout_height="wrap_content"
     android:background="?attr/selectableItemBackground"
     android:clickable="true"
-    android:padding="5dp">
+    android:padding="5dp"
+    android:focusable="true">
 
     <de.hdodenhof.circleimageview.CircleImageView
         android:id="@+id/itemThumbnailView"

app/src/main/res/layout/select_kiosk_item.xml

@@ -6,7 +6,8 @@
     android:layout_height="wrap_content"
     android:background="?attr/selectableItemBackground"
     android:clickable="true"
-    android:padding="5dp">
+    android:padding="5dp"
+    android:focusable="true">
 
     <ImageView
         android:id="@+id/itemThumbnailView"
@@ -17,7 +18,8 @@
         android:layout_alignParentTop="true"
         android:layout_marginRight="5dp"
         android:src="@drawable/service"
-        tools:ignore="RtlHardcoded"/>
+        tools:ignore="RtlHardcoded"
+        android:contentDescription="TODO" />
 
     <TextView
         android:id="@+id/itemTitleView"

app/src/main/res/menu/download_menu.xml

@@ -5,4 +5,7 @@
     <item android:id="@+id/action_settings"
         app:showAsAction="never"
         android:title="@string/settings"/>
+    <item android:id="@+id/switch_mode"
+        app:showAsAction="ifRoom"
+        android:title="@string/switch_view"/>
 </menu>

app/src/main/res/menu/menu_videooptions.xml

@@ -7,16 +7,16 @@
         android:id="@+id/toggleOrientation"
         android:icon="@drawable/ic_screen_rotation_white"
         android:title="@string/toggle_orientation"
-        app:showAsAction="always|withText" />
+        app:showAsAction="ifRoom|withText" />
     <item
         android:id="@+id/switchPopup"
         android:icon="@drawable/ic_fullscreen_exit_white"
         android:title="@string/switch_to_popup"
-        app:showAsAction="always|withText" />
+        app:showAsAction="ifRoom|withText" />
     <item
         android:id="@+id/switchBackground"
         android:icon="?audio"
         android:title="@string/switch_to_background"
-        app:showAsAction="always|withText" />
+        app:showAsAction="ifRoom|withText" />
 </menu>
 

app/src/main/res/values-hu/strings.xml

@@ -111,7 +111,7 @@
     <string name="msg_url_malform">Hibás URL vagy nincs internet</string>
     <string name="msg_running">NewPipe letöltés folyamatban</string>
     <string name="msg_running_detail">Katt a részletekért</string>
-    <string name="msg_wait">Kérlek várj...</string>
+    <string name="msg_wait">Kérlek várj…</string>
     <string name="msg_copied">Vágólapra másolva.</string>
     <string name="no_available_dir">Kérlek válassz egy létező könyvtárat a letöltésekhez.</string>
 

app/src/main/res/values-ko/strings.xml

@@ -414,7 +414,7 @@
 \n
 \n만약 모르신다면, 다음을 참고하세요:
 \n
-\n1. 모바일 환경이시면 브라우저 설정에서 데스크탑 모드를 활성화해주세요. Chrome 모바일에서는 오른쪽 ... 클릭시 아래쪽에 있습니다.
+\n1. 모바일 환경이시면 브라우저 설정에서 데스크탑 모드를 활성화해주세요. Chrome 모바일에서는 오른쪽 … 클릭시 아래쪽에 있습니다.
 \n2. 이 주소로 가세요: %1$s 
 \n3. 로그인이 필요하면 하세요.
 \n4. 리디렉트된 곳의 URL을 복사하세요. (이 URL이 당신의 프로필 URL 입니다)</string>

app/src/main/res/values/settings_keys.xml

@@ -105,6 +105,8 @@
 
     <string name="last_orientation_landscape_key" translatable="false">last_orientation_landscape_key</string>
 
+    <string name="last_resize_mode" translatable="false">last_resize_mode</string>
+
     <!-- DEBUG ONLY -->
     <string name="debug_pref_screen_key" translatable="false">debug_pref_screen_key</string>
     <string name="allow_heap_dumping_key" translatable="false">allow_heap_dumping_key</string>

app/src/main/res/values/strings.xml

@@ -517,5 +517,6 @@
     <string name="minimize_on_exit_none_description">None</string>
     <string name="minimize_on_exit_background_description">Minimize to background player</string>
     <string name="minimize_on_exit_popup_description">Minimize to popup player</string>
+    <string name="switch_view">Switch View</string>
 
 </resources>

app/src/main/res/xml/provider_paths.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<paths xmlns:android="http://schemas.android.com/apk/res/android">
+<paths>
     <external-path name="external_files" path="."/>
     <root-path name="external_files" path="/storage/" />
 </paths>

app/src/test/java/org/schabi/newpipe/local/subscription/services/ImportExportJsonHelperTest.java

@@ -27,7 +27,7 @@ public class ImportExportJsonHelperTest {
     }
 
     @Test
-    public void testInvalidSource() throws Exception {
+    public void testInvalidSource() {
         List<String> invalidList = Arrays.asList(
                 "{}",
                 "",

app/src/test/java/org/schabi/newpipe/report/ErrorActivityTest.java

@@ -15,7 +15,7 @@ import static org.junit.Assert.assertNull;
  */
 public class ErrorActivityTest {
     @Test
-    public void getReturnActivity() throws Exception {
+    public void getReturnActivity() {
         Class<? extends Activity> returnActivity;
         returnActivity = ErrorActivity.getReturnActivity(MainActivity.class);
         assertEquals(MainActivity.class, returnActivity);

app/src/test/java/org/schabi/newpipe/util/ListHelperTest.java

@@ -45,7 +45,7 @@ public class ListHelperTest {
             new VideoStream("", MediaFormat.MPEG_4,   /**/ "1080p60", true));
 
     @Test
-    public void getSortedStreamVideosListTest() throws Exception {
+    public void getSortedStreamVideosListTest() {
         List<VideoStream> result = ListHelper.getSortedStreamVideosList(MediaFormat.MPEG_4, true, videoStreamsTestList, videoOnlyStreamsTestList, true);
 
         List<String> expected = Arrays.asList("144p", "240p", "360p", "480p", "720p", "720p60", "1080p", "1080p60", "1440p60", "2160p", "2160p60");
@@ -67,7 +67,7 @@ public class ListHelperTest {
     }
 
     @Test
-    public void getSortedStreamVideosExceptHighResolutionsTest() throws Exception {
+    public void getSortedStreamVideosExceptHighResolutionsTest() {
         ////////////////////////////////////
         // Don't show Higher resolutions //
         //////////////////////////////////
@@ -79,7 +79,7 @@ public class ListHelperTest {
     }
 
     @Test
-    public void getDefaultResolutionTest() throws Exception {
+    public void getDefaultResolutionTest() {
         List<VideoStream> testList = Arrays.asList(
                 new VideoStream("", MediaFormat.MPEG_4,   /**/ "720p"),
                 new VideoStream("", MediaFormat.v3GPP,    /**/ "240p"),
@@ -130,7 +130,7 @@ public class ListHelperTest {
     }
 
     @Test
-    public void getHighestQualityAudioFormatTest() throws Exception {
+    public void getHighestQualityAudioFormatTest() {
         AudioStream stream = audioStreamsTestList.get(ListHelper.getHighestQualityAudioIndex(MediaFormat.M4A, audioStreamsTestList));
         assertEquals(320, stream.average_bitrate);
         assertEquals(MediaFormat.M4A, stream.getFormat());
@@ -145,7 +145,7 @@ public class ListHelperTest {
     }
 
     @Test
-    public void getHighestQualityAudioFormatPreferredAbsent() throws Exception {
+    public void getHighestQualityAudioFormatPreferredAbsent() {
 
         //////////////////////////////////////////
         // Doesn't contain the preferred format //
@@ -186,13 +186,13 @@ public class ListHelperTest {
     }
 
     @Test
-    public void getHighestQualityAudioNull() throws Exception {
+    public void getHighestQualityAudioNull() {
         assertEquals(-1, ListHelper.getHighestQualityAudioIndex(null, null));
-        assertEquals(-1, ListHelper.getHighestQualityAudioIndex(null, new ArrayList<AudioStream>()));
+        assertEquals(-1, ListHelper.getHighestQualityAudioIndex(null, new ArrayList<>()));
     }
 
     @Test
-    public void getLowestQualityAudioFormatTest() throws Exception {
+    public void getLowestQualityAudioFormatTest() {
         AudioStream stream = audioStreamsTestList.get(ListHelper.getMostCompactAudioIndex(MediaFormat.M4A, audioStreamsTestList));
         assertEquals(128, stream.average_bitrate);
         assertEquals(MediaFormat.M4A, stream.getFormat());
@@ -207,7 +207,7 @@ public class ListHelperTest {
     }
 
     @Test
-    public void getLowestQualityAudioFormatPreferredAbsent() throws Exception {
+    public void getLowestQualityAudioFormatPreferredAbsent() {
 
         //////////////////////////////////////////
         // Doesn't contain the preferred format //
@@ -250,13 +250,13 @@ public class ListHelperTest {
     }
 
     @Test
-    public void getLowestQualityAudioNull() throws Exception {
+    public void getLowestQualityAudioNull() {
         assertEquals(-1, ListHelper.getMostCompactAudioIndex(null, null));
-        assertEquals(-1, ListHelper.getMostCompactAudioIndex(null, new ArrayList<AudioStream>()));
+        assertEquals(-1, ListHelper.getMostCompactAudioIndex(null, new ArrayList<>()));
     }
 
     @Test
-    public void getVideoDefaultStreamIndexCombinations() throws Exception {
+    public void getVideoDefaultStreamIndexCombinations() {
         List<VideoStream> testList = Arrays.asList(
                 new VideoStream("", MediaFormat.MPEG_4,   /**/ "1080p"),
                 new VideoStream("", MediaFormat.MPEG_4,   /**/ "720p60"),

app/src/test/java/org/schabi/newpipe/util/QuadraticSliderStrategyTest.java

@@ -11,25 +11,25 @@ public class QuadraticSliderStrategyTest {
     private final SliderStrategy.Quadratic standard =
             new SliderStrategy.Quadratic(0f, 100f, 50f, STEP);
     @Test
-    public void testLeftBound() throws Exception {
+    public void testLeftBound() {
         assertEquals(standard.progressOf(0), 0);
         assertEquals(standard.valueOf(0), 0f, DELTA);
     }
 
     @Test
-    public void testCenter() throws Exception {
+    public void testCenter() {
         assertEquals(standard.progressOf(50), 50);
         assertEquals(standard.valueOf(50), 50f, DELTA);
     }
 
     @Test
-    public void testRightBound() throws Exception {
+    public void testRightBound() {
         assertEquals(standard.progressOf(100), 100);
         assertEquals(standard.valueOf(100), 100f, DELTA);
     }
 
     @Test
-    public void testLeftRegion() throws Exception {
+    public void testLeftRegion() {
         final int leftProgress = standard.progressOf(25);
         final double leftValue = standard.valueOf(25);
         assertTrue(leftProgress > 0 && leftProgress < 50);
@@ -37,7 +37,7 @@ public class QuadraticSliderStrategyTest {
     }
 
     @Test
-    public void testRightRegion() throws Exception {
+    public void testRightRegion() {
         final int leftProgress = standard.progressOf(75);
         final double leftValue = standard.valueOf(75);
         assertTrue(leftProgress > 50 && leftProgress < 100);
@@ -45,7 +45,7 @@ public class QuadraticSliderStrategyTest {
     }
 
     @Test
-    public void testConversion() throws Exception {
+    public void testConversion() {
         assertEquals(standard.progressOf(standard.valueOf(0)), 0);
         assertEquals(standard.progressOf(standard.valueOf(25)), 25);
         assertEquals(standard.progressOf(standard.valueOf(50)), 50);
@@ -54,7 +54,7 @@ public class QuadraticSliderStrategyTest {
     }
 
     @Test
-    public void testReverseConversion() throws Exception {
+    public void testReverseConversion() {
         // Need a larger delta since step size / granularity is too small and causes
         // floating point round-off errors during conversion
         final float largeDelta = 1f;
@@ -67,7 +67,7 @@ public class QuadraticSliderStrategyTest {
     }
 
     @Test
-    public void testQuadraticPropertyLeftRegion() throws Exception {
+    public void testQuadraticPropertyLeftRegion() {
         final double differenceCloserToCenter =
                 Math.abs(standard.valueOf(40) - standard.valueOf(45));
         final double differenceFurtherFromCenter =
@@ -76,7 +76,7 @@ public class QuadraticSliderStrategyTest {
     }
 
     @Test
-    public void testQuadraticPropertyRightRegion() throws Exception {
+    public void testQuadraticPropertyRightRegion() {
         final double differenceCloserToCenter =
                 Math.abs(standard.valueOf(75) - standard.valueOf(70));
         final double differenceFurtherFromCenter =

app/src/test/java/us/shandian/giga/get/DownloadManagerImplTest.java

@@ -42,12 +42,12 @@ public class DownloadManagerImplTest {
             missions.add(generateFinishedDownloadMission());
         }
         when(downloadDataSource.loadMissions()).thenReturn(new ArrayList<>(missions));
-        downloadManager = new DownloadManagerImpl(new ArrayList<String>(), downloadDataSource);
+        downloadManager = new DownloadManagerImpl(new ArrayList<>(), downloadDataSource);
     }
 
     @Test(expected = NullPointerException.class)
     public void testConstructorWithNullAsDownloadDataSource() {
-        new DownloadManagerImpl(new ArrayList<String>(), null);
+        new DownloadManagerImpl(new ArrayList<>(), null);
     }
 
 
@@ -84,7 +84,7 @@ public class DownloadManagerImplTest {
 
         downloadDataSource = mock(DownloadDataSource.class);
         when(downloadDataSource.loadMissions()).thenReturn(new ArrayList<>(missions));
-        downloadManager = new DownloadManagerImpl(new ArrayList<String>(), downloadDataSource);
+        downloadManager = new DownloadManagerImpl(new ArrayList<>(), downloadDataSource);
         verify(downloadDataSource, times(1)).loadMissions();
 
         assertEquals(50, downloadManager.getCount());
@@ -110,7 +110,7 @@ public class DownloadManagerImplTest {
     }
 
     @Test
-    public void resumeMission() throws Exception {
+    public void resumeMission() {
         DownloadMission mission = missions.get(0);
         mission.running = true;
         verify(mission, never()).start();
@@ -122,7 +122,7 @@ public class DownloadManagerImplTest {
     }
 
     @Test
-    public void pauseMission() throws Exception {
+    public void pauseMission() {
         DownloadMission mission = missions.get(0);
         mission.running = false;
         downloadManager.pauseMission(0);
@@ -133,7 +133,7 @@ public class DownloadManagerImplTest {
     }
 
     @Test
-    public void deleteMission() throws Exception {
+    public void deleteMission() {
         DownloadMission mission = missions.get(0);
         assertEquals(mission, downloadManager.getMission(0));
         downloadManager.deleteMission(0);
@@ -143,18 +143,18 @@ public class DownloadManagerImplTest {
     }
 
     @Test(expected = RuntimeException.class)
-    public void getMissionWithNegativeIndex() throws Exception {
+    public void getMissionWithNegativeIndex() {
         downloadManager.getMission(-1);
     }
 
     @Test
-    public void getMission() throws Exception {
+    public void getMission() {
         assertSame(missions.get(0), downloadManager.getMission(0));
         assertSame(missions.get(1), downloadManager.getMission(1));
     }
 
     @Test
-    public void sortByTimestamp() throws Exception {
+    public void sortByTimestamp() {
         ArrayList<DownloadMission> downloadMissions = new ArrayList<>();
         DownloadMission mission = new DownloadMission();
         mission.timestamp = 0;