Question

Suppose there are two different Android apps: A and B.

App A is a system admin. Is there any way for it to uninstall app B or make it non-functional?

Answer 1

Yes, it is possible, you need to use Intent.ACTION_DELETE have a look at following code,

Uri packageUri = Uri.parse("package:com.mypackgage");  
Intent uninstallIntent = new Intent(Intent.ACTION_DELETE,packageUri);  
startActivity(uninstallIntent);  

when you run the above code, it will ask for uninstall application as follows, image