Fix crash

ijkplayer/src/main/java/tv/danmaku/ijk/media/player/AndroidMediaPlayer.java

@@ -225,15 +225,23 @@ public class AndroidMediaPlayer extends AbstractMediaPlayer implements MediaPlay
         return mMediaPlayer.getAudioSessionId();
     }
 
+    private int getTrack(int type) {
+        try {
+            return mMediaPlayer.getSelectedTrack(type);
+        } catch (Exception e) {
+            return -1;
+        }
+    }
+
     @Override
     public int getSelectedTrack(int type) {
         switch (type) {
             case ITrackInfo.MEDIA_TRACK_TYPE_VIDEO:
-                return mMediaPlayer.getSelectedTrack(MediaPlayer.TrackInfo.MEDIA_TRACK_TYPE_VIDEO);
+                return getTrack(MediaPlayer.TrackInfo.MEDIA_TRACK_TYPE_VIDEO);
             case ITrackInfo.MEDIA_TRACK_TYPE_AUDIO:
-                return mMediaPlayer.getSelectedTrack(MediaPlayer.TrackInfo.MEDIA_TRACK_TYPE_AUDIO);
+                return getTrack(MediaPlayer.TrackInfo.MEDIA_TRACK_TYPE_AUDIO);
             case ITrackInfo.MEDIA_TRACK_TYPE_TEXT:
-                return mMediaPlayer.getSelectedTrack(MediaPlayer.TrackInfo.MEDIA_TRACK_TYPE_TIMEDTEXT);
+                return getTrack(MediaPlayer.TrackInfo.MEDIA_TRACK_TYPE_TIMEDTEXT);
             default:
                 return -1;
         }