I want force stop my app after activity destroyed , i tried to use 

```
 Process.KillProcess(Process.MyPid());

```

the app stop but it still able to force stop it again in Settings>App

I also tried to stop it by this code 

```
 ActivityManager am = (ActivityManager)GetSystemService(Context.ActivityService);
  am.KillBackgroundProcesses("TurkeyanaCall.TurkeyanaCall");

```

but i got 

> 
> An unhandled exception occured.
> 
> 
> 

i want to click this button from my app in anyway 

[![enter image description here](https://i.stack.imgur.com/k7RwJ.png)](https://i.stack.imgur.com/k7RwJ.png)