MediaController播放图标将以编程方式更改为暂停图标
MediaController播放图标将以编程方式更改为暂停图标
提问于 2015-08-24 12:41:23
我正在使用exoPlayer播放音乐，我正在通过安卓提供的mediaController控制音乐。我真正想要的是，任何外部事件，如电话呼叫，不仅应该暂停播放，还应该将图标更改为暂停。我已经设法使用telephoneManager应用程序接口来确定我是否在通话中，并且我可以在暂停时暂停mediaPlayBack，但我显然无法在此通话事件上更改播放图标以暂停。
MediaPlayerControl有一个pause()函数，我在暂停播放的地方调用它。playBack会暂停，但图标不会更改，如果有什么好方法，请告诉我
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);
}
}回答 1
Stack Overflow用户
发布于 2016-02-26 11:20:55
(这个问题似乎仍然悬而未决)。我认为您可以在Activity onPause()的覆盖中更改图标，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;
}
}类似地，您可以在应用程序恢复时通过onResume() @override更改回图标：
@Override
public void onResume() {
super.onResume();
if (!isPlayIconOn) {
// insert code to change your icon to "play" here;
isPlayIconOn=true;
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/32182605
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