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我正在尝试为更长的音频文件创建音板，但无法弄清楚如何在不关闭活动的情况下停止音频文件并重新启动它。假设每个音频文件长一分钟。如果我播放第一个音频文件 20 秒并开始下一个音频文件，第一个停止播放，第二个开始播放。但是，如果我再次单击第一个音频文件，第二个会停止播放，而第一个不会。我需要帮助。这让我发疯。

    bAudio1 = (ImageButton) findViewById(R.id.bAudio1);
    bAudio2 = (ImageButton) findViewById(R.id.bAudio2);

    mpAudio1 = MediaPlayer.create(this, R.raw.audio1);
    mpAudio2 = MediaPlayer.create(this, R.raw.audio2);

    bAudio1.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                    if(mpAudio1.isPlaying()) {
                            mpAudio1.stop();
                    } else {
                            if(mpAudio2.isPlaying()) { mpAudio2.stop(); }
                            mpAudio1.start();
                    }
            }
    });

    bAudio2.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                    if(mpAudio2.isPlaying()) {
                            mpAudio2.stop();
                    } else {
                            if(mpAudio1.isPlaying()) { mpAudio1.stop(); }
                            mpAudio2.start();
                    }
            }
    });
4

1 回答 1

1

这对我有用：

public class ExampleActivity extends Activity implements OnClickListener {

private Button button1;
private Button button2;
private MediaPlayer mediaPlayer1;
private MediaPlayer mediaPlayer2;

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

    button1 = (Button) findViewById(R.id.button1);
    button1.setOnClickListener(this);
    button2 = (Button) findViewById(R.id.button2);
    button2.setOnClickListener(this);
}

@Override
public void onClick(View v) {
    switch (v.getId()) {
    case R.id.button1:
        // play first audio clip and stop the second if playing
        if (mediaPlayer2 != null && mediaPlayer2.isPlaying()) {
            mediaPlayer2.stop();
            mediaPlayer2.release();
            mediaPlayer2 = null;
        }
        mediaPlayer1 = MediaPlayer.create(this, R.raw.song1);
        mediaPlayer1.start();
        break;
    case R.id.button2:
        // play second audio clip and stop the first if playing
        if (mediaPlayer1 != null && mediaPlayer1.isPlaying()) {
            mediaPlayer1.stop();
            mediaPlayer1.release();
            mediaPlayer1 = null;
        }
        mediaPlayer2 = MediaPlayer.create(this, R.raw.song2);
        mediaPlayer2.start();
        break;
    }
}

@Override
protected void onPause() {
    super.onPause();

    // stop the second if playing
    if (mediaPlayer2 != null && mediaPlayer2.isPlaying()) {
        mediaPlayer2.stop();
        mediaPlayer2.release();
        mediaPlayer2 = null;
    }

    // stop the first if playing
    if (mediaPlayer1 != null && mediaPlayer1.isPlaying()) {
        mediaPlayer1.stop();
        mediaPlayer1.release();
        mediaPlayer1 = null;
    }
}
于 2012-04-07T05:26:18.523 回答