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我试图每两秒播放一次通知声音。我的代码如下:延迟重复通知声音
final Handler myHandler = new Handler();
mMediaPlayer = new MediaPlayer();
final Runnable mMyRunnable = new Runnable()
{
@Override
public void run()
{
try
{
mMediaPlayer.setDataSource(getBaseContext(), getAlarmUri(alarm_number));
final AudioManager audioManager = (AudioManager) getBaseContext().getSystemService(Context.AUDIO_SERVICE);
if (audioManager.getStreamVolume(AudioManager.STREAM_ALARM) != 0)
{
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
mMediaPlayer.prepare();
mMediaPlayer.start();
}
}
catch (IOException e)
{
}
}
};
mMediaPlayer.setOnCompletionListener(new OnCompletionListener()
{
@Override
public void onCompletion(MediaPlayer mp)
{
myHandler.postDelayed(mMyRunnable, 2000);
}
});
myHandler.post(mMyRunnable);
当代码执行时,通知声音播放一次,然后我在该行mMediaPlayer.setDataSource(...
得到一个IllegalStateException我不知道为什么。