[英]MediaController Play Icon to change to Pause Icon programmatically
I am using exoPlayer to play music, I am controlling the music through mediaController that android provides. 我使用exoPlayer播放音乐,我通过android提供的mediaController控制音乐。 What I really want is that any external events such as phone call should not only pause playback but also change the icon to pause. 我真正想要的是任何外部事件(例如电话呼叫)都不仅应暂停播放,还应将图标更改为暂停。 I have managed to use the telephoneManager Api to find whether I am on call or not and I am able to pause the mediaPlayBack on Pause but I am clearly unable to change the playback icon to pause on this call event. 我已经设法使用电话管理器Api查找我是否在通话中,并且能够在“暂停”时暂停mediaPlayBack,但显然无法更改播放图标以在此通话事件上暂停。
The MediaPlayerControl has a pause() function which I call where I pause the playback. MediaPlayerControl有一个pause()函数,在暂停播放的地方调用该函数。 The playBack pauses but icon doesn't change, Let me know if there is any good way to do so 播放暂停,但图标未更改,请告诉我是否有任何好的方法
PhoneStateListener phoneStateListener = new PhoneStateListener() {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
if (state == TelephonyManager.CALL_STATE_RINGING) {
PlayerControl.pause();
}
if(TelephonyManager.CALL_STATE_OFFHOOK == state) {
PlayerControl.pause();
}
super.onCallStateChanged(state, incomingNumber);
}
};
public class PlayerControl implements MediaPlayerControl {
private final ExoPlayer exoPlayer;
public PlayerControl(ExoPlayer exoPlayer) {
this.exoPlayer = exoPlayer;
}
@Override
public boolean canPause() {
return true;
}
@Override
public boolean canSeekBackward() {
return true;
}
@Override
public boolean canSeekForward() {
return true;
}
/**
* This is an unsupported operation.
* <p>
* Application of audio effects is dependent on the audio renderer used. When using
* {@link com.google.android.exoplayer.MediaCodecAudioTrackRenderer}, the recommended approach is
* to extend the class and override
* {@link com.google.android.exoplayer.MediaCodecAudioTrackRenderer#onAudioSessionId}.
*
* @throws UnsupportedOperationException Always thrown.
*/
@Override
public int getAudioSessionId() {
throw new UnsupportedOperationException();
}
@Override
public int getBufferPercentage() {
return exoPlayer.getBufferedPercentage();
}
@Override
public int getCurrentPosition() {
return exoPlayer.getDuration() == ExoPlayer.UNKNOWN_TIME ? 0
: (int) exoPlayer.getCurrentPosition();
}
@Override
public int getDuration() {
return exoPlayer.getDuration() == ExoPlayer.UNKNOWN_TIME ? 0
: (int) exoPlayer.getDuration();
}
@Override
public boolean isPlaying() {
return exoPlayer.getPlayWhenReady();
}
@Override
public void start() {
exoPlayer.setPlayWhenReady(true);
}
@Override
public void pause() {
exoPlayer.setPlayWhenReady(false);
}
@Override
public void seekTo(int timeMillis) {
long seekPosition = exoPlayer.getDuration() == ExoPlayer.UNKNOWN_TIME ? 0
: Math.min(Math.max(0, timeMillis), getDuration());
exoPlayer.seekTo(seekPosition);
}
}
(It appears that this question is still open). (看来这个问题仍未解决)。 I would think you can change your icon within the override of your Activity onPause(), as follows: 我认为您可以在Activity onPause()的覆盖范围内更改图标,如下所示:
Boolean isPlayIconOn;
isPlayIconOn=true; // set this flag to true when your icon is on "play"
@Override
public void onPause() {
super.onPause();
if (isPlayIconOn) {
// insert code to change your icon to "pause" here;
isPlayIconOn=false;
}
}
Similarly, you can change the icon back when your app is resuming, via the onResume() @override: 同样,您可以在应用恢复时通过onResume()@override将图标改回来:
@Override
public void onResume() {
super.onResume();
if (!isPlayIconOn) {
// insert code to change your icon to "play" here;
isPlayIconOn=true;
}
}
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