如何確定Android服務是否在前臺運行？

Question

我有一個服務，我相信在前臺運行，如何檢查我的實施是否正常工作？

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; 
    } 

如果你想知道，如果你的服務是在前臺運行只需要打開其他一些脂肪應用程序，然後檢查是否服務仍在運行，或只檢查標誌service.foreground。

Answer 2

public static boolean isServiceRunningInForeground(Context context, Class<?> serviceClass) { 
     ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); 
     for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { 
     if (serviceClass.getName().equals(service.service.getClassName())) { 
      if (service.foreground) { 
       return true; 
      } 

     } 
     } 
     return false; 
    } 

Answer 3

一個答案的更有效的變化：https://stackoverflow.com/a/36127260/1275265

public static boolean isServiceRunningInForeground(Context context, Class<?> serviceClass) { 
    ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); 
    for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { 
     if (serviceClass.getName().equals(service.service.getClassName())) { 
     return service.foreground; 
     } 
    } 
    return false; 
}