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），它工作正常。

如何确认此服务是前台服务？

如何模拟系统负载，判断服务是否会被kill？

这是我的代码。

public int onStartCommand(Intent intent, int flags, int startId) { 初始化媒体会话（）；初始化媒体播放器（）； buildNotification(PlaybackStatus.PLAYING);
return super.onStartCommand（意图、标志、startId）； }

private void buildNotification(PlaybackStatus playbackStatus) {

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运行在前台，只需打开其他一些胖应用程序，然后检查服务是否仍然运行或者检查标志 service.foreground

来源：How to determine if an Android Service is running in the foreground?

如何确认服务是前台服务

How to confirm service is a foreground service

java

android

foreground

这是我的代码。