按下模拟器中的按钮时音乐无法开始

Question

收音机应该启动，但是我在终端收到         E / MediaPlayer：暂停状态为0

我不完全知道该怎么做。以前是应该设置字幕控制器的问题，但是它消失了，我只有状态0和状态1的问题

b_play = (Button) findViewById(R.id.b_play);
    b_play.setEnabled(false);
    b_play.setText("LOADING");

    mediaPlayer = new MediaPlayer();
    mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    new PlayerTask().execute(stream);

    b_play.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (started) {
                started = false;
                mediaPlayer.pause();
                b_play.setText("PLAY");
            } else {
                started = true;
                mediaPlayer.start();
                b_play.setText("PAUSE");
            }
        }
    });
}

class PlayerTask extends AsyncTask<String, Void, Boolean> {
    @Override
    protected Boolean doInBackground(String... strings) {
        try {
            mediaPlayer.setDataSource(strings[0]);
            mediaPlayer.prepare();
            prepared = true;
        } catch (IOException e) {
            e.printStackTrace();
        }

        return prepared;
    }

    @Override
    protected void onPostExecute(Boolean aBoolean) {
        super.onPostExecute(aBoolean);
        mediaPlayer.start();
        b_play.setEnabled(true);
        b_play.setText("PLAY");
    }


}