Should Have Subtitle Controller Already Set Mediaplayer Error Android

Should have subtitle controller already set Mediaplayer error Android

A developer recently added subtitle support to VideoView.

When the MediaPlayer starts playing a music (or other source), it checks if there is a SubtitleController and shows this message if it's not set.
It doesn't seem to care about if the source you want to play is a music or video. Not sure why he did that.

Short answer: Don't care about this "Exception".

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Edit :

Still present in Lollipop,

If MediaPlayer is only used to play audio files and you really want to remove these errors in the logcat, the code bellow set an empty SubtitleController to the MediaPlayer.

It should not be used in production environment and may have some side effects.

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)

Android force close Should have subtitle controller already set

Plse try below code :

    package com.zihadrizkyef.belajaraudiocapture;

    import android.media.MediaPlayer;
    import android.media.MediaRecorder;
    import android.os.Environment;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;
    import android.widget.Toast;

    import java.io.IOException;

    public class MainActivity extends AppCompatActivity {
        Button btnPlay, btnStop, btnStart;
        MediaRecorder myAudioRecorder;
        String outputFile = null;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

            btnPlay = (Button) findViewById(R.id.btnRecordPlay);
            btnStart = (Button) findViewById(R.id.btnRecordStart);
            btnStop = (Button) findViewById(R.id.btnRecordStop);

            btnPlay.setEnabled(false);
            btnStop.setEnabled(false);

            btnStart.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    try {
outputFile = Environment.getExternalStorageDirectory().getAbsolutePath()+"/recording.3gpp";
    //Creating MediaRecorder and specifying audio source, output format, encoder & output format  
            myAudioRecorder = new MediaRecorder();

            myAudioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
            myAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
            myAudioRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
            myAudioRecorder.setOutputFile(outputFile);
                        myAudioRecorder.prepare();
                        myAudioRecorder.start();
                    } catch (IOException | IllegalStateException e) {
                        e.printStackTrace();
                    }

                    btnStart.setEnabled(false);
                    btnStop.setEnabled(true);

                    Toast.makeText(MainActivity.this, "Recording started", Toast.LENGTH_SHORT).show();
                }
            });

            btnStop.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    myAudioRecorder.stop();
                    myAudioRecorder.release();
                    /*myAudioRecorder = null;*/

                    btnPlay.setEnabled(true);
                    btnStart.setEnabled(true);
                    btnStop.setEnabled(false);

                    Toast.makeText(MainActivity.this, "Audio recorded successfully", Toast.LENGTH_SHORT).show();
                }
            });

            btnPlay.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    MediaPlayer mediaPlayer = new MediaPlayer();

                    try {
                        mediaPlayer.setDataSource(outputFile);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                    try {
                        mediaPlayer.prepare();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                    mediaPlayer.start();
                    Toast.makeText(MainActivity.this, "Playing audio", Toast.LENGTH_SHORT).show();
                }
            });
        }
    }

In here what i done is that i created MediaRecorder and specifying audio source, output format... all those things for each Start Button click

Error E/MediaPlayer: Should have subtitle controller already set Causes No Audio To Play

After much research I have concluded that the codec used to encode the audio file was corrupt. m4a works for Android but it seems some codecs don't work properly (the header portion can get messed up as far as I can tell).

As such I converted all to mp3 and it works fine now.

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