如何确认服务是前台服务

Question

我有一个播放音乐的服务（媒体播放器），并且工作正常。

1. 如何确认该服务是前台服务？

2. 如何模拟系统负载并检查服务是否将被终止？

   这是我的代码。

   public int onStartCommand（Intent intent，int flags，int startId）{initMediaSession（）; initMediaPlayer（）; buildNotification（PlaybackStatus.PLAYING）;
   返回super.onStartCommand（intent，flags，startId）; }

   私人无效buildNotification（PlaybackStatusplayingStatus）{

    final int NOTIFY_ID = 1002; String aMessage=""; String name = "my_package_channel"; String id = "my_package_channel_1"; // The user-visible name of the channel. String description = "my_package_first_channel"; // The user-visible description of the channel. Intent intent; PendingIntent pendingIntent; NotificationCompat.Builder builder; if (notifManager == null) { notifManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { int importance = NotificationManager.IMPORTANCE_HIGH; NotificationChannel mChannel = notifManager.getNotificationChannel(id); if (mChannel == null) { mChannel = new NotificationChannel(id, name, importance); mChannel.setDescription(description); notifManager.createNotificationChannel(mChannel); } builder = new NotificationCompat.Builder(this, id); intent = new Intent(this, NotificationReturnSlot.class); pendingIntent = PendingIntent.getActivity(this, 1, intent, 0); builder.setContentTitle(aMessage) // required .setSmallIcon(R.mipmap.ic_launcher) .setContentText(this.getString(R.string.app_name)) // required .setAutoCancel(false) .setContentIntent(pendingIntent) .setVibrate(new long[]{0L}) ; } else { builder = new NotificationCompat.Builder(this); intent = new Intent(this, NotificationReturnSlot.class); pendingIntent = PendingIntent.getActivity(this, 1, intent, 0); builder.setContentTitle(aMessage) // required .setSmallIcon(R.mipmap.ic_launcher) .setContentText(this.getString(R.string.app_name)) // required .setAutoCancel(false) .setContentIntent(pendingIntent) .setVibrate(new long[]{0L}) .setPriority(Notification.PRIORITY_HIGH); } int mId = 1489; startForeground(mId, builder.build()); 

   }

Answer 1

private boolean isServiceRunning(String serviceName){
boolean serviceRunning = false;
ActivityManager am = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);
List<ActivityManager.RunningServiceInfo> l = am.getRunningServices(50);
Iterator<ActivityManager.RunningServiceInfo> i = l.iterator();
while (i.hasNext()) {
    ActivityManager.RunningServiceInfo runningServiceInfo = i
            .next();

    if(runningServiceInfo.service.getClassName().equals(serviceName)){
        serviceRunning = true;

        if(runningServiceInfo.foreground)
        {
            //service run in foreground
        }
    }
}
return serviceRunning;

}

如果您想知道您的服务是否正在前台运行，请打开其他胖应用程序，然后检查服务是否仍在运行或仅检查标志service.foreground

资料来源： 如何确定Android服务是否在前台运行？