android - 停止并重放音频文件

Question

我要完成的工作是停止音乐，然后再次按播放按钮时，媒体播放器将播放音乐。
但是我现在面临的问题是按下停止按钮后，我无法再次播放音乐。
这是我的代码:

Button play,pause,stop;

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

    play = (Button) findViewById(R.id.play);
    pause = (Button) findViewById(R.id.pause);
    stop = (Button) findViewById(R.id.stop);

    final MediaPlayer sound = MediaPlayer.create(Audio_BeginAgain.this, R.raw.beginagain);
    final MediaPlayer mp = new MediaPlayer();

    play.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            sound.start();
        }
    });

    pause.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            sound.pause();
        }
    });

    stop.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            sound.stop();
        }
    });



}

Answer 1

这正是阿卜杜勒·加富尔博士所说的。

每次您要重播MediaPlayer时，都必须使用create()对其进行新的初始化。

看下面的代码:

public class PlayaudioActivity extends Activity {

    private MediaPlayer mp;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button b = (Button) findViewById(R.id.button1);
        Button b2 = (Button) findViewById(R.id.button2);
        final TextView t = (TextView) findViewById(R.id.textView1);

        b.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                stopPlaying();
                mp = MediaPlayer.create(PlayaudioActivity.this, R.raw.far);
                mp.start();
            }

        });

        b2.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                stopPlaying();
                mp = MediaPlayer.create(PlayaudioActivity.this, R.raw.beet);
                mp.start();
            }
        });
    }

    private void stopPlaying() {
        if (mp != null) {
            mp.stop();
            mp.release();
            mp = null;
       }
    }
}

代码复制自: Android MediaPlayer Stop and Play