相关疑难解决方法(0)

我已经实现了音乐播放器,在播放流音频时会触发自定义通知.

一切正常,我可以使用通知中的按钮播放/暂停音频.唯一的问题是图像按钮:单击按钮无法更改图像以指示播放/暂停.

在RemoteReceiver中使用remoteViews.setImageViewResource()不起作用.控件是使用BroadcastReceiver完成的,这是从玩家活动中触发通知的代码:

  public void setNotification(String songName){
      String ns = Context.NOTIFICATION_SERVICE;
      NotificationManager notificationManager = (NotificationManager) getSystemService(ns);

      @SuppressWarnings("deprecation")
      Notification notification = new Notification(R.drawable.ic_launcher, null, System.currentTimeMillis());

      RemoteViews notificationView = new RemoteViews(getPackageName(), R.layout.notification_view);
      notificationView.setImageViewResource(R.id.button1, R.drawable.pause);
      notificationView.setTextViewText(R.id.textView1, songName);

      //the intent that is started when the notification is clicked (works)
      Intent notificationIntent = new Intent(this, PlayerActivity.class);
      PendingIntent pendingNotificationIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

      notification.contentView = notificationView;
      notification.contentIntent = pendingNotificationIntent;     

      Intent switchIntent = new Intent("com.example.test.ACTION_PLAY");
      PendingIntent pendingSwitchIntent = PendingIntent.getBroadcast(this, 0, switchIntent, PendingIntent.FLAG_UPDATE_CURRENT);

      notificationView.setOnClickPendingIntent(R.id.play_pause, pendingSwitchIntent);
      notificationManager.notify(1, notification); …

如何从通知中的按钮控制音乐播放器,以及如何从通知中收听按钮操作