AudioFlinger could not create track, status: -12

Question

I'm trying to play an audio Stream using audioTrack, so i have created audioTrack like this:

  public AudioTrack create() {
    if (mTrack != null) {
        if (mTrack.getState() == AudioTrack.STATE_INITIALIZED) {
            return mTrack;
        } else {
            mTrack.release();
            mTrack = null;
        }
    }

    mBuffSize = AudioTrack.getMinBufferSize(Settings.SAMPLE_RATE, AudioFormat.CHANNEL_OUT_MONO, AudioFormat.ENCODING_PCM_16BIT);
    mTrack = new AudioTrack(AudioManager.STREAM_MUSIC, Settings.SAMPLE_RATE,
            AudioFormat.CHANNEL_OUT_MONO, AudioFormat.ENCODING_PCM_16BIT, mBuffSize, AudioTrack.MODE_STREAM);
    if (mTrack.getState() == AudioTrack.STATE_INITIALIZED) {
        mTrack.play();
        return mTrack;
    }
    return null;
}

when i finis i call stop like this:

public void stop() {
    if (mTrack != null) {
        if (mTrack.getState() == AudioTrack.STATE_INITIALIZED) {
            mTrack.release();
            mTrack = null;
        }

    }

}

in some device, When i frequently create and stop, i get this:

AudioFlinger could not create track, status: -12.

I searched this issue in StackOverflow many times, but all the answers talk about soundpool , and i have not used a soundpool

Any help would be greatly appreciated!(i'm a Chinese and my English is not good)

Answer 1

Add

<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"></uses-permission>

to play the audio stream.