E/MediaPlayer: Should have subtitle controller already set

原文链接：http://stackoverflow.com/questions/20087804/should-have-subtitle-controller-already-set-mediaplayer-error-android/20149754#20149754

 static MediaPlayer getMediaPlayer(Context context){

     MediaPlayer mediaplayer = new MediaPlayer();

     if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.KITKAT) {
         return mediaplayer;
     }

     try {
         Class<?> cMediaTimeProvider = Class.forName( "android.media.MediaTimeProvider" );
         Class<?> cSubtitleController = Class.forName( "android.media.SubtitleController" );
         Class<?> iSubtitleControllerAnchor = Class.forName( "android.media.SubtitleController$Anchor" );
         Class<?> iSubtitleControllerListener = Class.forName( "android.media.SubtitleController$Listener" );

         Constructor constructor = cSubtitleController.getConstructor(new Class[]{Context.class, cMediaTimeProvider, iSubtitleControllerListener});

         Object subtitleInstance = constructor.newInstance(context, null, null);

         Field f = cSubtitleController.getDeclaredField("mHandler");

         f.setAccessible(true);
         try {
             f.set(subtitleInstance, new Handler());
         }
         catch (IllegalAccessException e) {return mediaplayer;}
         finally {
             f.setAccessible(false);
         }

         Method setsubtitleanchor = mediaplayer.getClass().getMethod("setSubtitleAnchor", cSubtitleController, iSubtitleControllerAnchor);

         setsubtitleanchor.invoke(mediaplayer, subtitleInstance, null);
         //Log.e("", "subtitle is setted :p");
     } catch (Exception e) {}

     return mediaplayer;
 }

　　This code is trying to do the following from the hidden API

 SubtitleController sc = new SubtitleController(context, null, null);
 sc.mHandler = new Handler();
 mediaplayer.setSubtitleAnchor(sc, null)