如何在Android

Question

我使用通知构建器创建通知，如下所示：

NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
String someString = "StackOverflow is the best";
builder.setContentTitle(someString)
            .setContentIntent(contentIntent)
            .setLights(0xFF00FF00, 500, 3000)
            .setPriority(Notification.PRIORITY_MAX)
            .setAutoCancel(true);
Notification notif = builder.build();
Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
if (Build.VERSION.SDK_INT >= 21) {
      notif.sound = soundUri;
      AudioAttributes.Builder attrs = new AudioAttributes.Builder();
      attrs.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION);
      attrs.setUsage(AudioAttributes.USAGE_NOTIFICATION_RINGTONE);
      notif.audioAttributes = attrs.build();
} else {
      builder.setSound(soundUri, AudioManager.STREAM_RING);
      notif = builder.build();
}

notif.flags = notif.flags & (~ Notification.FLAG_INSISTENT);
return notif;

问题是我无法停止播放声音，直到打开通知面板。我需要点击电源按钮来停止这个声音。我创建了服务，检测 android.intent.action.SCREEN_ON 和 android.intent.action.SCREEN_OFF 操作：

public class StopNotificationSoundService extends Service {
  private BroadcastReceiver sReceiver;

  public IBinder onBind(Intent arg) {
      return null;
  }

  public int onStartCommand(Intent intent, int flag, int startIs) {
      IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
      filter.addAction(Intent.ACTION_SCREEN_OFF);
      sReceiver = new StopSoundNotificationReceiver();
      registerReceiver(sReceiver, filter);
      return START_STICKY;
  }

  public void onDestroy() {
      if (sReceiver != null)
          unregisterReceiver(sReceiver);
      super.onDestroy();
  }

}

这是广播接收器：

    public class StopSoundNotificationReceiver extends BroadcastReceiver {
      @Override
      public void onReceive(Context context, Intent intent) {
          Log.d("LOG_TAG", "StopSoundNotificationReceiver");
          // Here is code that stops sound
      }
  }

请帮帮我。

Answer 1

notificationBuilder.setDefaults(0)

Answer 2

获取NotificationManager的实例：

    NotificationManager notify_manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

保存通知的某处ID并致电

    notify_manager.cancel(your_id);

或者您可以删除所有通知：

    notify_manager.cancelAll();