-Enabled play queue control panel for popup video player.

-Refactored background player activity into generic play queue control panel activity.
-Changed control panel activities into singleTask.

app/src/main/AndroidManifest.xml

@@ -40,9 +40,14 @@
 
         <activity
             android:name=".player.BackgroundPlayerActivity"
-            android:launchMode="singleTop"
+            android:launchMode="singleTask"
             android:label="@string/title_activity_background_player"/>
 
+        <activity
+            android:name=".player.PopupVideoPlayerActivity"
+            android:launchMode="singleTask"
+            android:label="@string/title_activity_popup_player"/>
+
         <service
             android:name=".player.PopupVideoPlayer"
             android:exported="false"/>

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

@@ -48,6 +48,7 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
+import org.schabi.newpipe.player.event.PlayerEventListener;
 import org.schabi.newpipe.playlist.PlayQueueItem;
 import org.schabi.newpipe.util.ListHelper;
 import org.schabi.newpipe.util.ThemeHelper;
@@ -80,13 +81,6 @@ public final class BackgroundPlayer extends Service {
     // Service-Activity Binder
     //////////////////////////////////////////////////////////////////////////*/
 
-    public interface PlayerEventListener {
-        void onPlaybackUpdate(int state, int repeatMode, boolean shuffled, PlaybackParameters parameters);
-        void onProgressUpdate(int currentProgress, int duration, int bufferPercent);
-        void onMetadataUpdate(StreamInfo info);
-        void onServiceStopped();
-    }
-
     private PlayerEventListener activityListener;
     private IBinder mBinder;
 
@@ -149,7 +143,9 @@ public final class BackgroundPlayer extends Service {
 
     public void openControl(final Context context) {
         final Intent intent = new Intent(context, BackgroundPlayerActivity.class);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
             intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        }
         context.startActivity(intent);
         context.sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
     }

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

@@ -1,535 +1,46 @@
 package org.schabi.newpipe.player;
 
-import android.content.ComponentName;
 import android.content.Intent;
-import android.content.ServiceConnection;
-import android.os.Build;
-import android.os.Bundle;
 import android.os.IBinder;
-import android.provider.Settings;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
-import android.support.v7.widget.Toolbar;
-import android.support.v7.widget.helper.ItemTouchHelper;
-import android.util.Log;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.View;
-import android.widget.ImageButton;
-import android.widget.PopupMenu;
-import android.widget.ProgressBar;
-import android.widget.SeekBar;
-import android.widget.TextView;
-
-import com.google.android.exoplayer2.PlaybackParameters;
-import com.google.android.exoplayer2.Player;
 
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.extractor.stream.StreamInfo;
-import org.schabi.newpipe.playlist.PlayQueueItem;
-import org.schabi.newpipe.playlist.PlayQueueItemBuilder;
-import org.schabi.newpipe.playlist.PlayQueueItemHolder;
-import org.schabi.newpipe.util.Localization;
-import org.schabi.newpipe.util.NavigationHelper;
-import org.schabi.newpipe.util.ThemeHelper;
 
-public class BackgroundPlayerActivity extends AppCompatActivity
+public final class BackgroundPlayerActivity extends ServicePlayerActivity {
-        implements BackgroundPlayer.PlayerEventListener, SeekBar.OnSeekBarChangeListener, View.OnClickListener {
 
     private static final String TAG = "BGPlayerActivity";
 
-    private boolean serviceBound;
-    private ServiceConnection serviceConnection;
-
-    private BackgroundPlayer.BasePlayerImpl player;
-
-    private boolean seeking;
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Views
-    ////////////////////////////////////////////////////////////////////////////
-
-    private static final int RECYCLER_ITEM_POPUP_MENU_GROUP_ID = 47;
-    private static final int PLAYBACK_SPEED_POPUP_MENU_GROUP_ID = 61;
-    private static final int PLAYBACK_PITCH_POPUP_MENU_GROUP_ID = 97;
-
-    private View rootView;
-
-    private RecyclerView itemsList;
-    private ItemTouchHelper itemTouchHelper;
-
-    private TextView metadataTitle;
-    private TextView metadataArtist;
-
-    private SeekBar progressSeekBar;
-    private TextView progressCurrentTime;
-    private TextView progressEndTime;
-
-    private ImageButton repeatButton;
-    private ImageButton backwardButton;
-    private ImageButton playPauseButton;
-    private ImageButton forwardButton;
-    private ImageButton shuffleButton;
-    private ProgressBar progressBar;
-
-    private TextView playbackSpeedButton;
-    private PopupMenu playbackSpeedPopupMenu;
-    private TextView playbackPitchButton;
-    private PopupMenu playbackPitchPopupMenu;
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Activity Lifecycle
-    ////////////////////////////////////////////////////////////////////////////
-
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    public String getTag() {
-        super.onCreate(savedInstanceState);
+        return TAG;
-        ThemeHelper.setTheme(this);
-        setContentView(R.layout.activity_background_player);
-        rootView = findViewById(R.id.main_content);
-
-        final Toolbar toolbar = rootView.findViewById(R.id.toolbar);
-        setSupportActionBar(toolbar);
-        if (getSupportActionBar() != null) {
-            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-            getSupportActionBar().setTitle(R.string.title_activity_background_player);
-        }
-
-        serviceConnection = backgroundPlayerConnection();
-        bind();
     }
 
     @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
+    public String getSupportActionTitle() {
-        getMenuInflater().inflate(R.menu.menu_play_queue, menu);
+        return getResources().getString(R.string.title_activity_background_player);
-        return true;
     }
 
     @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
+    public BasePlayer playerFrom(IBinder binder) {
-        switch (item.getItemId()) {
+        final BackgroundPlayer.LocalBinder mLocalBinder = (BackgroundPlayer.LocalBinder) binder;
-            case android.R.id.home:
+        return mLocalBinder.getBackgroundPlayerInstance();
-                finish();
-                return true;
-            case R.id.action_history:
-                NavigationHelper.openHistory(this);
-                return true;
-            case R.id.action_settings:
-                NavigationHelper.openSettings(this);
-                return true;
-            case R.id.action_system_audio:
-                startActivity(new Intent(Settings.ACTION_SOUND_SETTINGS));
-                return true;
-        }
-        return super.onOptionsItemSelected(item);
     }
 
     @Override
-    protected void onDestroy() {
+    public Intent getBindIntent() {
-        super.onDestroy();
+        return new Intent(this, BackgroundPlayer.class);
-        unbind();
-    }
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Service Connection
-    ////////////////////////////////////////////////////////////////////////////
-
-    private void bind() {
-        final Intent mIntent = new Intent(this, BackgroundPlayer.class);
-        final boolean success = bindService(mIntent, serviceConnection, BIND_AUTO_CREATE);
-        if (!success) {
-            unbindService(serviceConnection);
-        }
-        serviceBound = success;
-    }
-
-    private void unbind() {
-        if(serviceBound) {
-            unbindService(serviceConnection);
-            serviceBound = false;
-            stopPlayerListener();
-            player = null;
-            finish();
-        }
-    }
-
-    private ServiceConnection backgroundPlayerConnection() {
-        return new ServiceConnection() {
-            @Override
-            public void onServiceDisconnected(ComponentName name) {
-                Log.d(TAG, "Background player service is disconnected");
     }
 
     @Override
-            public void onServiceConnected(ComponentName name, IBinder service) {
+    public void startPlayerListener() {
-                Log.d(TAG, "Background player service is connected");
+        if (player != null && player instanceof BackgroundPlayer.BasePlayerImpl) {
-                final BackgroundPlayer.LocalBinder mLocalBinder = (BackgroundPlayer.LocalBinder) service;
+            ((BackgroundPlayer.BasePlayerImpl) player).setActivityListener(this);
-                player = mLocalBinder.getBackgroundPlayerInstance();
-                if (player == null || player.playQueue == null || player.playQueueAdapter == null || player.simpleExoPlayer == null) {
-                    unbind();
-                } else {
-                    buildComponents();
-                    startPlayerListener();
-                }
-            }
-        };
-    }
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Component Building
-    ////////////////////////////////////////////////////////////////////////////
-
-    private void buildComponents() {
-        buildQueue();
-        buildMetadata();
-        buildSeekBar();
-        buildControls();
-    }
-
-    private void buildQueue() {
-        itemsList = findViewById(R.id.play_queue);
-        itemsList.setLayoutManager(new LinearLayoutManager(this));
-        itemsList.setAdapter(player.playQueueAdapter);
-        itemsList.setClickable(true);
-        itemsList.setLongClickable(true);
-
-        itemTouchHelper = new ItemTouchHelper(getItemTouchCallback());
-        itemTouchHelper.attachToRecyclerView(itemsList);
-
-        player.playQueueAdapter.setSelectedListener(getOnSelectedListener());
-    }
-
-    private void buildMetadata() {
-        metadataTitle = rootView.findViewById(R.id.song_name);
-        metadataArtist = rootView.findViewById(R.id.artist_name);
-    }
-
-    private void buildSeekBar() {
-        progressCurrentTime = rootView.findViewById(R.id.current_time);
-        progressSeekBar = rootView.findViewById(R.id.seek_bar);
-        progressEndTime = rootView.findViewById(R.id.end_time);
-
-        progressSeekBar.setOnSeekBarChangeListener(this);
-    }
-
-    private void buildControls() {
-        repeatButton = rootView.findViewById(R.id.control_repeat);
-        backwardButton = rootView.findViewById(R.id.control_backward);
-        playPauseButton = rootView.findViewById(R.id.control_play_pause);
-        forwardButton = rootView.findViewById(R.id.control_forward);
-        shuffleButton = rootView.findViewById(R.id.control_shuffle);
-        playbackSpeedButton = rootView.findViewById(R.id.control_playback_speed);
-        playbackPitchButton = rootView.findViewById(R.id.control_playback_pitch);
-        progressBar = rootView.findViewById(R.id.control_progress_bar);
-
-        repeatButton.setOnClickListener(this);
-        backwardButton.setOnClickListener(this);
-        playPauseButton.setOnClickListener(this);
-        forwardButton.setOnClickListener(this);
-        shuffleButton.setOnClickListener(this);
-        playbackSpeedButton.setOnClickListener(this);
-        playbackPitchButton.setOnClickListener(this);
-
-        playbackSpeedPopupMenu = new PopupMenu(this, playbackSpeedButton);
-        playbackPitchPopupMenu = new PopupMenu(this, playbackPitchButton);
-        buildPlaybackSpeedMenu();
-        buildPlaybackPitchMenu();
-    }
-
-    private void buildPlaybackSpeedMenu() {
-        if (playbackSpeedPopupMenu == null) return;
-
-        playbackSpeedPopupMenu.getMenu().removeGroup(PLAYBACK_SPEED_POPUP_MENU_GROUP_ID);
-        for (int i = 0; i < BasePlayer.PLAYBACK_SPEEDS.length; i++) {
-            final float playbackSpeed = BasePlayer.PLAYBACK_SPEEDS[i];
-            final String formattedSpeed = player.formatSpeed(playbackSpeed);
-            final MenuItem item = playbackSpeedPopupMenu.getMenu().add(PLAYBACK_SPEED_POPUP_MENU_GROUP_ID, i, Menu.NONE, formattedSpeed);
-            item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-                @Override
-                public boolean onMenuItemClick(MenuItem menuItem) {
-                    player.setPlaybackSpeed(playbackSpeed);
-                    return true;
-                }
-            });
-        }
-    }
-
-    private void buildPlaybackPitchMenu() {
-        if (playbackPitchPopupMenu == null) return;
-
-        playbackPitchPopupMenu.getMenu().removeGroup(PLAYBACK_PITCH_POPUP_MENU_GROUP_ID);
-        for (int i = 0; i < BasePlayer.PLAYBACK_PITCHES.length; i++) {
-            final float playbackPitch = BasePlayer.PLAYBACK_PITCHES[i];
-            final String formattedPitch = player.formatPitch(playbackPitch);
-            final MenuItem item = playbackPitchPopupMenu.getMenu().add(PLAYBACK_PITCH_POPUP_MENU_GROUP_ID, i, Menu.NONE, formattedPitch);
-            item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-                @Override
-                public boolean onMenuItemClick(MenuItem menuItem) {
-                    player.setPlaybackPitch(playbackPitch);
-                    return true;
-                }
-            });
-        }
-    }
-
-    private void buildItemPopupMenu(final PlayQueueItem item, final View view) {
-        final PopupMenu menu = new PopupMenu(this, view);
-        final MenuItem remove = menu.getMenu().add(RECYCLER_ITEM_POPUP_MENU_GROUP_ID, 0, Menu.NONE, R.string.play_queue_remove);
-        remove.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-            @Override
-            public boolean onMenuItemClick(MenuItem menuItem) {
-                final int index = player.playQueue.indexOf(item);
-                if (index != -1) player.playQueue.remove(index);
-                return true;
-            }
-        });
-
-        final MenuItem detail = menu.getMenu().add(RECYCLER_ITEM_POPUP_MENU_GROUP_ID, 1, Menu.NONE, R.string.play_queue_stream_detail);
-        detail.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-            @Override
-            public boolean onMenuItemClick(MenuItem menuItem) {
-                onOpenDetail(item.getServiceId(), item.getUrl(), item.getTitle());
-                return true;
-            }
-        });
-
-        menu.show();
-    }
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Component Helpers
-    ////////////////////////////////////////////////////////////////////////////
-
-    private ItemTouchHelper.SimpleCallback getItemTouchCallback() {
-        return new ItemTouchHelper.SimpleCallback(ItemTouchHelper.UP | ItemTouchHelper.DOWN, 0) {
-            @Override
-            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder source, RecyclerView.ViewHolder target) {
-                if (source.getItemViewType() != target.getItemViewType()) {
-                    return false;
-                }
-
-                final int sourceIndex = source.getLayoutPosition();
-                final int targetIndex = target.getLayoutPosition();
-                player.playQueue.move(sourceIndex, targetIndex);
-                return true;
-            }
-
-            @Override
-            public boolean isLongPressDragEnabled() {
-                return false;
-            }
-
-            @Override
-            public boolean isItemViewSwipeEnabled() {
-                return false;
-            }
-
-            @Override
-            public void onSwiped(RecyclerView.ViewHolder viewHolder, int swipeDir) {}
-        };
-    }
-
-    private PlayQueueItemBuilder.OnSelectedListener getOnSelectedListener() {
-        return new PlayQueueItemBuilder.OnSelectedListener() {
-            @Override
-            public void selected(PlayQueueItem item, View view) {
-                final int index = player.playQueue.indexOf(item);
-                if (index == -1) return;
-
-                if (player.playQueue.getIndex() == index) {
-                    player.onRestart();
-                } else {
-                    player.playQueue.setIndex(index);
         }
     }
 
     @Override
-            public void held(PlayQueueItem item, View view) {
+    public void stopPlayerListener() {
-                final int index = player.playQueue.indexOf(item);
+        if (player != null && player instanceof BackgroundPlayer.BasePlayerImpl) {
-                if (index != -1) buildItemPopupMenu(item, view);
+            ((BackgroundPlayer.BasePlayerImpl) player).removeActivityListener(this);
-            }
-
-            @Override
-            public void onStartDrag(PlayQueueItemHolder viewHolder) {
-                if (itemTouchHelper != null) itemTouchHelper.startDrag(viewHolder);
-            }
-        };
-    }
-
-    private void onOpenDetail(int serviceId, String videoUrl, String videoTitle) {
-        NavigationHelper.openVideoDetail(this, serviceId, videoUrl, videoTitle);
-    }
-
-    private void scrollToSelected() {
-        itemsList.smoothScrollToPosition(player.playQueue.getIndex());
-    }
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Component On-Click Listener
-    ////////////////////////////////////////////////////////////////////////////
-
-    @Override
-    public void onClick(View view) {
-        if (view.getId() == repeatButton.getId()) {
-            player.onRepeatClicked();
-
-        } else if (view.getId() == backwardButton.getId()) {
-            player.onPlayPrevious();
-            scrollToSelected();
-
-        } else if (view.getId() == playPauseButton.getId()) {
-            player.onVideoPlayPause();
-            scrollToSelected();
-
-        } else if (view.getId() == forwardButton.getId()) {
-            player.onPlayNext();
-
-        } else if (view.getId() == shuffleButton.getId()) {
-            player.onShuffleClicked();
-
-        } else if (view.getId() == playbackSpeedButton.getId()) {
-            playbackSpeedPopupMenu.show();
-
-        } else if (view.getId() == playbackPitchButton.getId()) {
-            playbackPitchPopupMenu.show();
-        }
-    }
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Seekbar Listener
-    ////////////////////////////////////////////////////////////////////////////
-
-    @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-        if (fromUser) progressCurrentTime.setText(Localization.getDurationString(progress / 1000));
-    }
-
-    @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        seeking = true;
-    }
-
-    @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        player.simpleExoPlayer.seekTo(seekBar.getProgress());
-        seeking = false;
-    }
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Binding Service Listener
-    ////////////////////////////////////////////////////////////////////////////
-
-    private void startPlayerListener() {
-        if (player != null) {
-            player.setActivityListener(this);
-        }
-    }
-
-    private void stopPlayerListener() {
-        if (player != null) {
-            player.removeActivityListener(this);
-        }
-    }
-
-    @Override
-    public void onPlaybackUpdate(int state, int repeatMode, boolean shuffled, PlaybackParameters parameters) {
-        onStateChanged(state);
-        onPlayModeChanged(repeatMode, shuffled);
-        onPlaybackParameterChanged(parameters);
-        scrollToSelected();
-    }
-
-    @Override
-    public void onProgressUpdate(int currentProgress, int duration, int bufferPercent) {
-        // Set buffer progress
-        progressSeekBar.setSecondaryProgress((int) (progressSeekBar.getMax() * ((float) bufferPercent / 100)));
-
-        // Set Duration
-        progressSeekBar.setMax(duration);
-        progressEndTime.setText(Localization.getDurationString(duration / 1000));
-
-        // Set current time if not seeking
-        if (!seeking) {
-            progressSeekBar.setProgress(currentProgress);
-            progressCurrentTime.setText(Localization.getDurationString(currentProgress / 1000));
-        }
-    }
-
-    @Override
-    public void onMetadataUpdate(StreamInfo info) {
-        if (info != null) {
-            metadataTitle.setText(info.name);
-            metadataArtist.setText(info.uploader_name);
-            scrollToSelected();
-        }
-    }
-
-    @Override
-    public void onServiceStopped() {
-        unbind();
-    }
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Binding Service Helper
-    ////////////////////////////////////////////////////////////////////////////
-
-    private void onStateChanged(final int state) {
-        switch (state) {
-            case BasePlayer.STATE_PAUSED:
-                playPauseButton.setImageResource(R.drawable.ic_play_arrow_white);
-                break;
-            case BasePlayer.STATE_PLAYING:
-                playPauseButton.setImageResource(R.drawable.ic_pause_white);
-                break;
-            case BasePlayer.STATE_COMPLETED:
-                playPauseButton.setImageResource(R.drawable.ic_replay_white);
-                break;
-            default:
-                break;
-        }
-
-        switch (state) {
-            case BasePlayer.STATE_PAUSED:
-            case BasePlayer.STATE_PLAYING:
-            case BasePlayer.STATE_COMPLETED:
-                playPauseButton.setClickable(true);
-                playPauseButton.setVisibility(View.VISIBLE);
-                progressBar.setVisibility(View.GONE);
-                break;
-            default:
-                playPauseButton.setClickable(false);
-                playPauseButton.setVisibility(View.INVISIBLE);
-                progressBar.setVisibility(View.VISIBLE);
-                break;
-        }
-    }
-
-    private void onPlayModeChanged(final int repeatMode, final boolean shuffled) {
-        switch (repeatMode) {
-            case Player.REPEAT_MODE_OFF:
-                repeatButton.setImageResource(R.drawable.exo_controls_repeat_off);
-                break;
-            case Player.REPEAT_MODE_ONE:
-                repeatButton.setImageResource(R.drawable.exo_controls_repeat_one);
-                break;
-            case Player.REPEAT_MODE_ALL:
-                repeatButton.setImageResource(R.drawable.exo_controls_repeat_all);
-                break;
-        }
-
-        final int shuffleAlpha = shuffled ? 255 : 77;
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
-            shuffleButton.setImageAlpha(shuffleAlpha);
-        } else {
-            shuffleButton.setAlpha(shuffleAlpha);
-        }
-    }
-
-    private void onPlaybackParameterChanged(final PlaybackParameters parameters) {
-        if (parameters != null) {
-            playbackSpeedButton.setText(player.formatSpeed(parameters.speed));
-            playbackPitchButton.setText(player.formatPitch(parameters.pitch));
         }
     }
 }

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

@@ -30,11 +30,13 @@ import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.graphics.Bitmap;
 import android.graphics.PixelFormat;
+import android.os.Binder;
 import android.os.Build;
 import android.os.Handler;
 import android.os.IBinder;
 import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
 import android.support.v4.app.NotificationCompat;
 import android.util.DisplayMetrics;
 import android.util.Log;
@@ -49,6 +51,7 @@ import android.widget.SeekBar;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
 
 import org.schabi.newpipe.BuildConfig;
@@ -56,14 +59,15 @@ import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.ReCaptchaActivity;
 import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
 import org.schabi.newpipe.extractor.services.youtube.YoutubeStreamExtractor;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
+import org.schabi.newpipe.player.event.PlayerEventListener;
 import org.schabi.newpipe.player.old.PlayVideoActivity;
 import org.schabi.newpipe.player.playback.MediaSourceManager;
+import org.schabi.newpipe.playlist.PlayQueueItem;
 import org.schabi.newpipe.playlist.SinglePlayQueue;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.report.UserAction;
@@ -120,6 +124,19 @@ public final class PopupVideoPlayer extends Service {
     private VideoPlayerImpl playerImpl;
     private Disposable currentWorker;
 
+    /*//////////////////////////////////////////////////////////////////////////
+    // Service-Activity Binder
+    //////////////////////////////////////////////////////////////////////////*/
+
+    private PlayerEventListener activityListener;
+    private IBinder mBinder;
+
+    class LocalBinder extends Binder {
+        VideoPlayerImpl getPopupPlayerInstance() {
+            return PopupVideoPlayer.this.playerImpl;
+        }
+    }
+
     /*//////////////////////////////////////////////////////////////////////////
     // Service LifeCycle
     //////////////////////////////////////////////////////////////////////////*/
@@ -131,6 +148,8 @@ public final class PopupVideoPlayer extends Service {
 
         playerImpl = new VideoPlayerImpl();
         ThemeHelper.setTheme(this);
+
+        mBinder = new LocalBinder();
     }
 
     @Override
@@ -191,7 +210,7 @@ public final class PopupVideoPlayer extends Service {
 
     @Override
     public IBinder onBind(Intent intent) {
-        return null;
+        return mBinder;
     }
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -284,19 +303,16 @@ public final class PopupVideoPlayer extends Service {
 
     public void onVideoClose() {
         if (DEBUG) Log.d(TAG, "onVideoClose() called");
+        playerImpl.stopActivityBinding();
         stopSelf();
     }
 
-    public void onOpenDetail(Context context, String videoUrl, String videoTitle) {
+    public void openControl(final Context context) {
-        if (DEBUG) Log.d(TAG, "onOpenDetail() called with: context = [" + context + "], videoUrl = [" + videoUrl + "]");
+        final Intent intent = new Intent(context, PopupVideoPlayerActivity.class);
-        Intent i = new Intent(context, MainActivity.class);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
-        i.putExtra(Constants.KEY_SERVICE_ID, 0);
+            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        i.putExtra(Constants.KEY_URL, videoUrl);
+        }
-        i.putExtra(Constants.KEY_TITLE, videoTitle);
+        context.startActivity(intent);
-        i.putExtra(Constants.KEY_LINK_TYPE, StreamingService.LinkType.STREAM);
-        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        i.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
-        context.startActivity(i);
         context.sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
     }
 
@@ -376,7 +392,7 @@ public final class PopupVideoPlayer extends Service {
 
     ///////////////////////////////////////////////////////////////////////////
 
-    private class VideoPlayerImpl extends VideoPlayer {
+    protected class VideoPlayerImpl extends VideoPlayer {
         private TextView resizingIndicator;
 
         VideoPlayerImpl() {
@@ -465,6 +481,61 @@ public final class PopupVideoPlayer extends Service {
                 hideControls(100, 0);
             }
         }
+
+        @Override
+        public void onShuffleClicked() {
+            super.onShuffleClicked();
+            updatePlayback();
+        }
+
+        @Override
+        public void onUpdateProgress(int currentProgress, int duration, int bufferPercent) {
+            super.onUpdateProgress(currentProgress, duration, bufferPercent);
+            updateProgress(currentProgress, duration, bufferPercent);
+        }
+
+        /*//////////////////////////////////////////////////////////////////////////
+        // Activity Event Listener
+        //////////////////////////////////////////////////////////////////////////*/
+
+        public void setActivityListener(PlayerEventListener listener) {
+            activityListener = listener;
+            updateMetadata();
+            updatePlayback();
+            triggerProgressUpdate();
+        }
+
+        public void removeActivityListener(PlayerEventListener listener) {
+            if (activityListener == listener) {
+                activityListener = null;
+            }
+        }
+
+        private void updateMetadata() {
+            if (activityListener != null && currentInfo != null) {
+                activityListener.onMetadataUpdate(currentInfo);
+            }
+        }
+
+        private void updatePlayback() {
+            if (activityListener != null && simpleExoPlayer != null && playQueue != null) {
+                activityListener.onPlaybackUpdate(currentState, simpleExoPlayer.getRepeatMode(), playQueue.isShuffled(), simpleExoPlayer.getPlaybackParameters());
+            }
+        }
+
+        private void updateProgress(int currentProgress, int duration, int bufferPercent) {
+            if (activityListener != null) {
+                activityListener.onProgressUpdate(currentProgress, duration, bufferPercent);
+            }
+        }
+
+        private void stopActivityBinding() {
+            if (activityListener != null) {
+                activityListener.onServiceStopped();
+                activityListener = null;
+            }
+        }
+
         /*//////////////////////////////////////////////////////////////////////////
         // ExoPlayer Video Listener
         //////////////////////////////////////////////////////////////////////////*/
@@ -474,15 +545,29 @@ public final class PopupVideoPlayer extends Service {
             super.onRepeatModeChanged(i);
             setRepeatModeRemote(notRemoteView, i);
             updateNotification(-1);
+            updatePlayback();
+        }
+
+        @Override
+        public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {
+            super.onPlaybackParametersChanged(playbackParameters);
+            updatePlayback();
         }
 
         /*//////////////////////////////////////////////////////////////////////////
         // Playback Listener
         //////////////////////////////////////////////////////////////////////////*/
 
+        @Override
+        public void sync(@NonNull PlayQueueItem item, @Nullable StreamInfo info) {
+            super.sync(item, info);
+            updateMetadata();
+        }
+
         @Override
         public void shutdown() {
             super.shutdown();
+            stopActivityBinding();
             stopSelf();
         }
 
@@ -512,17 +597,24 @@ public final class PopupVideoPlayer extends Service {
                     onVideoPlayPause();
                     break;
                 case ACTION_OPEN_DETAIL:
-                    onOpenDetail(PopupVideoPlayer.this, getVideoUrl(), getVideoTitle());
+                    openControl(PopupVideoPlayer.this);
                     break;
                 case ACTION_REPEAT:
                     onRepeatClicked();
                     break;
             }
         }
+
         /*//////////////////////////////////////////////////////////////////////////
         // States
         //////////////////////////////////////////////////////////////////////////*/
 
+        @Override
+        public void changeState(int state) {
+            super.changeState(state);
+            updatePlayback();
+        }
+
         @Override
         public void onBlocked() {
             super.onBlocked();

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

@@ -0,0 +1,46 @@
+package org.schabi.newpipe.player;
+
+import android.content.Intent;
+import android.os.IBinder;
+
+import org.schabi.newpipe.R;
+
+public final class PopupVideoPlayerActivity extends ServicePlayerActivity {
+
+    private static final String TAG = "PopupVideoPlayerActivity";
+
+    @Override
+    public String getTag() {
+        return TAG;
+    }
+
+    @Override
+    public String getSupportActionTitle() {
+        return getResources().getString(R.string.title_activity_popup_player);
+    }
+
+    @Override
+    public BasePlayer playerFrom(IBinder binder) {
+        final PopupVideoPlayer.LocalBinder mLocalBinder = (PopupVideoPlayer.LocalBinder) binder;
+        return mLocalBinder.getPopupPlayerInstance();
+    }
+
+    @Override
+    public Intent getBindIntent() {
+        return new Intent(this, PopupVideoPlayer.class);
+    }
+
+    @Override
+    public void startPlayerListener() {
+        if (player != null && player instanceof PopupVideoPlayer.VideoPlayerImpl) {
+            ((PopupVideoPlayer.VideoPlayerImpl) player).setActivityListener(this);
+        }
+    }
+
+    @Override
+    public void stopPlayerListener() {
+        if (player != null && player instanceof PopupVideoPlayer.VideoPlayerImpl) {
+            ((PopupVideoPlayer.VideoPlayerImpl) player).removeActivityListener(this);
+        }
+    }
+}

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

@@ -0,0 +1,536 @@
+package org.schabi.newpipe.player;
+
+import android.content.ComponentName;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.provider.Settings;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.support.v7.widget.Toolbar;
+import android.support.v7.widget.helper.ItemTouchHelper;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.ImageButton;
+import android.widget.PopupMenu;
+import android.widget.ProgressBar;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import com.google.android.exoplayer2.PlaybackParameters;
+import com.google.android.exoplayer2.Player;
+
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.stream.StreamInfo;
+import org.schabi.newpipe.player.event.PlayerEventListener;
+import org.schabi.newpipe.playlist.PlayQueueItem;
+import org.schabi.newpipe.playlist.PlayQueueItemBuilder;
+import org.schabi.newpipe.playlist.PlayQueueItemHolder;
+import org.schabi.newpipe.util.Localization;
+import org.schabi.newpipe.util.NavigationHelper;
+import org.schabi.newpipe.util.ThemeHelper;
+
+public abstract class ServicePlayerActivity extends AppCompatActivity
+        implements PlayerEventListener, SeekBar.OnSeekBarChangeListener, View.OnClickListener {
+
+    private boolean serviceBound;
+    private ServiceConnection serviceConnection;
+
+    protected BasePlayer player;
+
+    private boolean seeking;
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Views
+    ////////////////////////////////////////////////////////////////////////////
+
+    private static final int RECYCLER_ITEM_POPUP_MENU_GROUP_ID = 47;
+    private static final int PLAYBACK_SPEED_POPUP_MENU_GROUP_ID = 61;
+    private static final int PLAYBACK_PITCH_POPUP_MENU_GROUP_ID = 97;
+
+    private View rootView;
+
+    private RecyclerView itemsList;
+    private ItemTouchHelper itemTouchHelper;
+
+    private TextView metadataTitle;
+    private TextView metadataArtist;
+
+    private SeekBar progressSeekBar;
+    private TextView progressCurrentTime;
+    private TextView progressEndTime;
+
+    private ImageButton repeatButton;
+    private ImageButton backwardButton;
+    private ImageButton playPauseButton;
+    private ImageButton forwardButton;
+    private ImageButton shuffleButton;
+    private ProgressBar progressBar;
+
+    private TextView playbackSpeedButton;
+    private PopupMenu playbackSpeedPopupMenu;
+    private TextView playbackPitchButton;
+    private PopupMenu playbackPitchPopupMenu;
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Abstracts
+    ////////////////////////////////////////////////////////////////////////////
+
+    public abstract String getTag();
+
+    public abstract String getSupportActionTitle();
+
+    public abstract Intent getBindIntent();
+
+    public abstract void startPlayerListener();
+
+    public abstract void stopPlayerListener();
+
+    public abstract BasePlayer playerFrom(final IBinder binder);
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Activity Lifecycle
+    ////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        ThemeHelper.setTheme(this);
+        setContentView(R.layout.activity_player_queue_control);
+        rootView = findViewById(R.id.main_content);
+
+        final Toolbar toolbar = rootView.findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        if (getSupportActionBar() != null) {
+            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+            getSupportActionBar().setTitle(getSupportActionTitle());
+        }
+
+        serviceConnection = getServiceConnection();
+        bind();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_play_queue, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                finish();
+                return true;
+            case R.id.action_history:
+                NavigationHelper.openHistory(this);
+                return true;
+            case R.id.action_settings:
+                NavigationHelper.openSettings(this);
+                return true;
+            case R.id.action_system_audio:
+                startActivity(new Intent(Settings.ACTION_SOUND_SETTINGS));
+                return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        unbind();
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Service Connection
+    ////////////////////////////////////////////////////////////////////////////
+
+    private void bind() {
+        final boolean success = bindService(getBindIntent(), serviceConnection, BIND_AUTO_CREATE);
+        if (!success) {
+            unbindService(serviceConnection);
+        }
+        serviceBound = success;
+    }
+
+    private void unbind() {
+        if(serviceBound) {
+            unbindService(serviceConnection);
+            serviceBound = false;
+            stopPlayerListener();
+            player = null;
+            finish();
+        }
+    }
+
+    private ServiceConnection getServiceConnection() {
+        return new ServiceConnection() {
+            @Override
+            public void onServiceDisconnected(ComponentName name) {
+                Log.d(getTag(), "Player service is disconnected");
+            }
+
+            @Override
+            public void onServiceConnected(ComponentName name, IBinder service) {
+                Log.d(getTag(), "Player service is connected");
+                player = playerFrom(service);
+                if (player == null || player.playQueue == null || player.playQueueAdapter == null || player.simpleExoPlayer == null) {
+                    unbind();
+                } else {
+                    buildComponents();
+                    startPlayerListener();
+                }
+            }
+        };
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Component Building
+    ////////////////////////////////////////////////////////////////////////////
+
+    private void buildComponents() {
+        buildQueue();
+        buildMetadata();
+        buildSeekBar();
+        buildControls();
+    }
+
+    private void buildQueue() {
+        itemsList = findViewById(R.id.play_queue);
+        itemsList.setLayoutManager(new LinearLayoutManager(this));
+        itemsList.setAdapter(player.playQueueAdapter);
+        itemsList.setClickable(true);
+        itemsList.setLongClickable(true);
+
+        itemTouchHelper = new ItemTouchHelper(getItemTouchCallback());
+        itemTouchHelper.attachToRecyclerView(itemsList);
+
+        player.playQueueAdapter.setSelectedListener(getOnSelectedListener());
+    }
+
+    private void buildMetadata() {
+        metadataTitle = rootView.findViewById(R.id.song_name);
+        metadataArtist = rootView.findViewById(R.id.artist_name);
+    }
+
+    private void buildSeekBar() {
+        progressCurrentTime = rootView.findViewById(R.id.current_time);
+        progressSeekBar = rootView.findViewById(R.id.seek_bar);
+        progressEndTime = rootView.findViewById(R.id.end_time);
+
+        progressSeekBar.setOnSeekBarChangeListener(this);
+    }
+
+    private void buildControls() {
+        repeatButton = rootView.findViewById(R.id.control_repeat);
+        backwardButton = rootView.findViewById(R.id.control_backward);
+        playPauseButton = rootView.findViewById(R.id.control_play_pause);
+        forwardButton = rootView.findViewById(R.id.control_forward);
+        shuffleButton = rootView.findViewById(R.id.control_shuffle);
+        playbackSpeedButton = rootView.findViewById(R.id.control_playback_speed);
+        playbackPitchButton = rootView.findViewById(R.id.control_playback_pitch);
+        progressBar = rootView.findViewById(R.id.control_progress_bar);
+
+        repeatButton.setOnClickListener(this);
+        backwardButton.setOnClickListener(this);
+        playPauseButton.setOnClickListener(this);
+        forwardButton.setOnClickListener(this);
+        shuffleButton.setOnClickListener(this);
+        playbackSpeedButton.setOnClickListener(this);
+        playbackPitchButton.setOnClickListener(this);
+
+        playbackSpeedPopupMenu = new PopupMenu(this, playbackSpeedButton);
+        playbackPitchPopupMenu = new PopupMenu(this, playbackPitchButton);
+        buildPlaybackSpeedMenu();
+        buildPlaybackPitchMenu();
+    }
+
+    private void buildPlaybackSpeedMenu() {
+        if (playbackSpeedPopupMenu == null) return;
+
+        playbackSpeedPopupMenu.getMenu().removeGroup(PLAYBACK_SPEED_POPUP_MENU_GROUP_ID);
+        for (int i = 0; i < BasePlayer.PLAYBACK_SPEEDS.length; i++) {
+            final float playbackSpeed = BasePlayer.PLAYBACK_SPEEDS[i];
+            final String formattedSpeed = player.formatSpeed(playbackSpeed);
+            final MenuItem item = playbackSpeedPopupMenu.getMenu().add(PLAYBACK_SPEED_POPUP_MENU_GROUP_ID, i, Menu.NONE, formattedSpeed);
+            item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
+                @Override
+                public boolean onMenuItemClick(MenuItem menuItem) {
+                    player.setPlaybackSpeed(playbackSpeed);
+                    return true;
+                }
+            });
+        }
+    }
+
+    private void buildPlaybackPitchMenu() {
+        if (playbackPitchPopupMenu == null) return;
+
+        playbackPitchPopupMenu.getMenu().removeGroup(PLAYBACK_PITCH_POPUP_MENU_GROUP_ID);
+        for (int i = 0; i < BasePlayer.PLAYBACK_PITCHES.length; i++) {
+            final float playbackPitch = BasePlayer.PLAYBACK_PITCHES[i];
+            final String formattedPitch = player.formatPitch(playbackPitch);
+            final MenuItem item = playbackPitchPopupMenu.getMenu().add(PLAYBACK_PITCH_POPUP_MENU_GROUP_ID, i, Menu.NONE, formattedPitch);
+            item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
+                @Override
+                public boolean onMenuItemClick(MenuItem menuItem) {
+                    player.setPlaybackPitch(playbackPitch);
+                    return true;
+                }
+            });
+        }
+    }
+
+    private void buildItemPopupMenu(final PlayQueueItem item, final View view) {
+        final PopupMenu menu = new PopupMenu(this, view);
+        final MenuItem remove = menu.getMenu().add(RECYCLER_ITEM_POPUP_MENU_GROUP_ID, 0, Menu.NONE, R.string.play_queue_remove);
+        remove.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
+            @Override
+            public boolean onMenuItemClick(MenuItem menuItem) {
+                final int index = player.playQueue.indexOf(item);
+                if (index != -1) player.playQueue.remove(index);
+                return true;
+            }
+        });
+
+        final MenuItem detail = menu.getMenu().add(RECYCLER_ITEM_POPUP_MENU_GROUP_ID, 1, Menu.NONE, R.string.play_queue_stream_detail);
+        detail.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
+            @Override
+            public boolean onMenuItemClick(MenuItem menuItem) {
+                onOpenDetail(item.getServiceId(), item.getUrl(), item.getTitle());
+                return true;
+            }
+        });
+
+        menu.show();
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Component Helpers
+    ////////////////////////////////////////////////////////////////////////////
+
+    private ItemTouchHelper.SimpleCallback getItemTouchCallback() {
+        return new ItemTouchHelper.SimpleCallback(ItemTouchHelper.UP | ItemTouchHelper.DOWN, 0) {
+            @Override
+            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder source, RecyclerView.ViewHolder target) {
+                if (source.getItemViewType() != target.getItemViewType()) {
+                    return false;
+                }
+
+                final int sourceIndex = source.getLayoutPosition();
+                final int targetIndex = target.getLayoutPosition();
+                player.playQueue.move(sourceIndex, targetIndex);
+                return true;
+            }
+
+            @Override
+            public boolean isLongPressDragEnabled() {
+                return false;
+            }
+
+            @Override
+            public boolean isItemViewSwipeEnabled() {
+                return false;
+            }
+
+            @Override
+            public void onSwiped(RecyclerView.ViewHolder viewHolder, int swipeDir) {}
+        };
+    }
+
+    private PlayQueueItemBuilder.OnSelectedListener getOnSelectedListener() {
+        return new PlayQueueItemBuilder.OnSelectedListener() {
+            @Override
+            public void selected(PlayQueueItem item, View view) {
+                final int index = player.playQueue.indexOf(item);
+                if (index == -1) return;
+
+                if (player.playQueue.getIndex() == index) {
+                    player.onRestart();
+                } else {
+                    player.playQueue.setIndex(index);
+                }
+            }
+
+            @Override
+            public void held(PlayQueueItem item, View view) {
+                final int index = player.playQueue.indexOf(item);
+                if (index != -1) buildItemPopupMenu(item, view);
+            }
+
+            @Override
+            public void onStartDrag(PlayQueueItemHolder viewHolder) {
+                if (itemTouchHelper != null) itemTouchHelper.startDrag(viewHolder);
+            }
+        };
+    }
+
+    private void onOpenDetail(int serviceId, String videoUrl, String videoTitle) {
+        NavigationHelper.openVideoDetail(this, serviceId, videoUrl, videoTitle);
+    }
+
+    private void scrollToSelected() {
+        itemsList.smoothScrollToPosition(player.playQueue.getIndex());
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Component On-Click Listener
+    ////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    public void onClick(View view) {
+        if (view.getId() == repeatButton.getId()) {
+            player.onRepeatClicked();
+
+        } else if (view.getId() == backwardButton.getId()) {
+            player.onPlayPrevious();
+            scrollToSelected();
+
+        } else if (view.getId() == playPauseButton.getId()) {
+            player.onVideoPlayPause();
+            scrollToSelected();
+
+        } else if (view.getId() == forwardButton.getId()) {
+            player.onPlayNext();
+
+        } else if (view.getId() == shuffleButton.getId()) {
+            player.onShuffleClicked();
+
+        } else if (view.getId() == playbackSpeedButton.getId()) {
+            playbackSpeedPopupMenu.show();
+
+        } else if (view.getId() == playbackPitchButton.getId()) {
+            playbackPitchPopupMenu.show();
+        }
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Seekbar Listener
+    ////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        if (fromUser) progressCurrentTime.setText(Localization.getDurationString(progress / 1000));
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+        seeking = true;
+    }
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+        player.simpleExoPlayer.seekTo(seekBar.getProgress());
+        seeking = false;
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Binding Service Listener
+    ////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    public void onPlaybackUpdate(int state, int repeatMode, boolean shuffled, PlaybackParameters parameters) {
+        onStateChanged(state);
+        onPlayModeChanged(repeatMode, shuffled);
+        onPlaybackParameterChanged(parameters);
+        scrollToSelected();
+    }
+
+    @Override
+    public void onProgressUpdate(int currentProgress, int duration, int bufferPercent) {
+        // Set buffer progress
+        progressSeekBar.setSecondaryProgress((int) (progressSeekBar.getMax() * ((float) bufferPercent / 100)));
+
+        // Set Duration
+        progressSeekBar.setMax(duration);
+        progressEndTime.setText(Localization.getDurationString(duration / 1000));
+
+        // Set current time if not seeking
+        if (!seeking) {
+            progressSeekBar.setProgress(currentProgress);
+            progressCurrentTime.setText(Localization.getDurationString(currentProgress / 1000));
+        }
+    }
+
+    @Override
+    public void onMetadataUpdate(StreamInfo info) {
+        if (info != null) {
+            metadataTitle.setText(info.name);
+            metadataArtist.setText(info.uploader_name);
+            scrollToSelected();
+        }
+    }
+
+    @Override
+    public void onServiceStopped() {
+        unbind();
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Binding Service Helper
+    ////////////////////////////////////////////////////////////////////////////
+
+    private void onStateChanged(final int state) {
+        switch (state) {
+            case BasePlayer.STATE_PAUSED:
+                playPauseButton.setImageResource(R.drawable.ic_play_arrow_white);
+                break;
+            case BasePlayer.STATE_PLAYING:
+                playPauseButton.setImageResource(R.drawable.ic_pause_white);
+                break;
+            case BasePlayer.STATE_COMPLETED:
+                playPauseButton.setImageResource(R.drawable.ic_replay_white);
+                break;
+            default:
+                break;
+        }
+
+        switch (state) {
+            case BasePlayer.STATE_PAUSED:
+            case BasePlayer.STATE_PLAYING:
+            case BasePlayer.STATE_COMPLETED:
+                playPauseButton.setClickable(true);
+                playPauseButton.setVisibility(View.VISIBLE);
+                progressBar.setVisibility(View.GONE);
+                break;
+            default:
+                playPauseButton.setClickable(false);
+                playPauseButton.setVisibility(View.INVISIBLE);
+                progressBar.setVisibility(View.VISIBLE);
+                break;
+        }
+    }
+
+    private void onPlayModeChanged(final int repeatMode, final boolean shuffled) {
+        switch (repeatMode) {
+            case Player.REPEAT_MODE_OFF:
+                repeatButton.setImageResource(R.drawable.exo_controls_repeat_off);
+                break;
+            case Player.REPEAT_MODE_ONE:
+                repeatButton.setImageResource(R.drawable.exo_controls_repeat_one);
+                break;
+            case Player.REPEAT_MODE_ALL:
+                repeatButton.setImageResource(R.drawable.exo_controls_repeat_all);
+                break;
+        }
+
+        final int shuffleAlpha = shuffled ? 255 : 77;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+            shuffleButton.setImageAlpha(shuffleAlpha);
+        } else {
+            shuffleButton.setAlpha(shuffleAlpha);
+        }
+    }
+
+    private void onPlaybackParameterChanged(final PlaybackParameters parameters) {
+        if (parameters != null) {
+            playbackSpeedButton.setText(player.formatSpeed(parameters.speed));
+            playbackPitchButton.setText(player.formatPitch(parameters.pitch));
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/player/event/PlayerEventListener.java

@@ -0,0 +1,13 @@
+package org.schabi.newpipe.player.event;
+
+
+import com.google.android.exoplayer2.PlaybackParameters;
+
+import org.schabi.newpipe.extractor.stream.StreamInfo;
+
+public interface PlayerEventListener {
+    void onPlaybackUpdate(int state, int repeatMode, boolean shuffled, PlaybackParameters parameters);
+    void onProgressUpdate(int currentProgress, int duration, int bufferPercent);
+    void onMetadataUpdate(StreamInfo info);
+    void onServiceStopped();
+}

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

@@ -295,6 +295,7 @@
 
     <!-- Play Queue -->
     <string name="title_activity_background_player">Background Player</string>
+    <string name="title_activity_popup_player">Popup Player</string>
     <string name="play_queue_remove">Remove</string>
     <string name="play_queue_stream_detail">Details</string>
     <string name="play_queue_audio_settings">Audio Settings</string>