Use multidex for all build types.

app/build.gradle

@@ -16,6 +16,8 @@ android {
         versionCode 955
         versionName "0.20.1"
 
+        multiDexEnabled true
+
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
 
@@ -28,7 +30,6 @@ android {
 
     buildTypes {
         debug {
-            multiDexEnabled true
             debuggable true
 
             // suffix the app id and the app name with git branch name
@@ -157,7 +158,7 @@ dependencies {
     debugImplementation "com.squareup.leakcanary:leakcanary-android:${leakCanaryVersion}"
     implementation "com.squareup.leakcanary:leakcanary-object-watcher-android:${leakCanaryVersion}"
 
-    debugImplementation "androidx.multidex:multidex:2.0.1"
+    implementation "androidx.multidex:multidex:2.0.1"
 
     testImplementation 'junit:junit:4.13.1'
     testImplementation 'org.mockito:mockito-core:3.3.3'

app/src/debug/java/org/schabi/newpipe/DebugApp.kt

@@ -1,6 +1,5 @@
 package org.schabi.newpipe
 
-import androidx.multidex.MultiDex
 import androidx.preference.PreferenceManager
 import com.facebook.stetho.Stetho
 import com.facebook.stetho.okhttp3.StethoInterceptor
@@ -28,12 +27,6 @@ class DebugApp : App() {
         return downloader
     }
 
-    override fun initACRA() {
-        // install MultiDex before initializing ACRA
-        MultiDex.install(this)
-        super.initACRA()
-    }
-
     private fun initStetho() {
         // Create an InitializerBuilder
         val initializerBuilder = Stetho.newInitializerBuilder(this)

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

@@ -1,6 +1,5 @@
 package org.schabi.newpipe;
 
-import android.app.Application;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.content.Context;
@@ -9,6 +8,7 @@ import android.os.Build;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
+import androidx.multidex.MultiDexApplication;
 import androidx.preference.PreferenceManager;
 
 import com.nostra13.universalimageloader.cache.memory.impl.LRULimitedMemoryCache;
@@ -61,7 +61,7 @@ import io.reactivex.plugins.RxJavaPlugins;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public class App extends Application {
+public class App extends MultiDexApplication {
     protected static final String TAG = App.class.toString();
     private static App app;