How to close another app in Android?

Question

I have been developing an app, and I need to close another app in my code. Does anyone know any api to call to close an app?

BTW: my app will be pre-installed.

Answer 1

Try This

    ActivityManager am = (ActivityManager) getApplicationContext().getSystemService("activity");
    Method forceStopPackage;                
    forceStopPackage =am.getClass().getDeclaredMethod("forceStopPackage",String.class);
    forceStopPackage.setAccessible(true);
    forceStopPackage.invoke(am, pkg);

In manifest file add this