如何确认服务是前台服务

Posted 2023-04-14

【中文标题】如何确认服务是前台服务

【英文标题】：How to confirm service is a foreground service

【发布时间】：2019-03-25 13:21:36

【问题描述】：

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？

如何模拟系统负载并检查服务是否会被杀死？

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(intent, flags, startId);

private void buildNotification(PlaybackStatus 播放状态)

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());

【问题讨论】：

***.com/questions/6452466/… 的副本

How to check if a service is running on android?的可能重复

【参考方案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在前台运行，只需打开其他一些胖应用程序，然后检查服务是否仍在运行或检查标志 service.foreground

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