android - 如何在 Xamarin 中获取 ActivityManager 的实例？

Question

要检查应用程序是在前台还是后台，我正在尝试按以下方式访问 ActivityManager。

ActivityManager activityManager = GetSystemService(Context.ACTIVITY_SERVICE) as ActivityManager;
            List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
            foreach(RunningAppProcessInfo appProcess in appProcesses){
                if(appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND){
                    Log.i("Foreground App", appProcess.processName);
                    //SetNotification ();
                }
            }

但我收到编译错误，因为“Android.Content.Context 不包含 ACTIVITY_SERVICE 的定义”在第一行。

如何在 Xamarin 中访问 ActivityManager？

Answer 1

只是改变

ActivityManager activityManager = GetSystemService(Context.ACTIVITY_SERVICE) as ActivityManager;

到

ActivityManager activityManager = GetSystemService(Context.ActivityService) as ActivityManager;

获取ActivityManager的实例。