我正在尝试使用mediacontroller播放音频。我能够让音频工作但是当歌曲开始播放时我的mediacontroller上的播放按钮不会更新。如果按下mediacontroller上的播放按钮,它会暂停歌曲并寻找进度条。然后,如果我按暂停,它会再次播放该歌曲。我在打电话
mp.start()
这不会更新播放按钮。当我打电话给start时,如何让按钮更改为暂停按钮?
public class QuickMusicPlayer implements MediaController.MediaPlayerControl {
private final MediaPlayer mMediaPlayer;
private final MediaController mMediaController;
private Activity mActivity;
public QuickMusicPlayer(View anchorView, Activity activity) {
mActivity = activity;
mMediaPlayer = new MediaPlayer();
mMediaController = new MediaController(activity);
mMediaController.setMediaPlayer(this);
mMediaController.setAnchorView(anchorView);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mp.start();
}
});
}
public void setUrl(String url) {
mMediaPlayer.reset();
if (TextUtils.isEmpty(url)) {
ViewUtil.showCroutonAlert(mActivity, R.string.cant_play_music);
} else {
try {
mMediaPlayer.setDataSource(url);
mMediaPlayer.prepareAsync();
mMediaController.setEnabled(true);
mMediaController.show(0);
} catch (IOException e) {
e.printStackTrace();
}
}
}
@Override
public void start() {
mMediaPlayer.start();
}
@Override
public void pause() {
mMediaPlayer.pause();
}
@Override
public int getDuration() {
return mMediaPlayer.getDuration();
}
@Override
public int getCurrentPosition() {
return mMediaPlayer.getCurrentPosition();
}
@Override
public void seekTo(int pos) {
mMediaPlayer.seekTo(pos);
}
@Override
public boolean isPlaying() {
return mMediaPlayer.isPlaying();
}
@Override
public int getBufferPercentage() {
return 0;
}
@Override
public boolean canPause() {
return true;
}
@Override
public boolean canSeekBackward() {
return true;
}
@Override
public boolean canSeekForward() {
return true;
}
@Override
public int getAudioSessionId() {
return 0;
}
}
答案 0 :(得分:7)
想出来。我需要在开始更新按钮后再次调用show
mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mp.start();
mMediaController.show(0);
}
});