android - 音频在Android中无法正常工作

Question

我尝试根据用户选择从原始文件夹播放音频文件，但是如果用户选择或更改两个或多个文件，则音频无法正常工作，但是在更改选项后，它会流式传输选定文件以及先前选定的文件。我是android新手...我在下面发布了我的代码，任何人都可以帮我解决这个问题。

switch (Global.id)
{
case R.id.radioButton1:
    mMediaPlayer = MediaPlayer.create(context, R.raw.kalimba);
    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mMediaPlayer.setLooping(true);
    mMediaPlayer.start();
    break;

case R.id.radioButton2:
    mMediaPlayer = MediaPlayer.create(context, R.raw.maid);
    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mMediaPlayer.setLooping(true);
    mMediaPlayer.start();
    break;

case R.id.radioButton3:
    mMediaPlayer = MediaPlayer.create(context, R.raw.sleep_away);
    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mMediaPlayer.setLooping(true);
    mMediaPlayer.start();
    break;
}

这是 onDestroy 方法。

private void destroy()
{
mMediaPlayer.release();
mMediaPlayer.reset();
mMediaPlayer.stop();            
}

Answer 1

试试这个

if ( mMediaPlayer.isPlaying() )  // Checking if already playing any song
{
     mMediaPlayer.reset();
     mMediaPlayer.stop();

}

在开关盒中添加以上条件

switch (Global.id)
{
case R.id.radioButton1:
    mMediaPlayer = MediaPlayer.create(context, R.raw.kalimba);
    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mMediaPlayer.setLooping(true);

    if ( mMediaPlayer.isPlaying() )  // Checking if already playing any song
    {
        mMediaPlayer.reset();
        mMediaPlayer.stop();
    }
    mMediaPlayer.start();
    break;
case R.id.radioButton2:
    mMediaPlayer = MediaPlayer.create(context, R.raw.maid);
    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mMediaPlayer.setLooping(true);
    if ( mMediaPlayer.isPlaying() )  // Checking if already playing any song
    {
        mMediaPlayer.reset();
        mMediaPlayer.stop();
    }
    mMediaPlayer.start();
    break;
case R.id.radioButton3:
    mMediaPlayer = MediaPlayer.create(context, R.raw.sleep_away);
    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mMediaPlayer.setLooping(true);
    if ( mMediaPlayer.isPlaying() )  // Checking if already playing any song
    {
        mMediaPlayer.reset();
        mMediaPlayer.stop();
    }
    mMediaPlayer.start();
    break;
}