Exit/Finish an app/activity - android

Question

I\'ve got 4 activities say Act1, Act2, Act3 and Act4. A button in Act1 opens Act2, a button in Act2 opens Act3, a button in A

Answer 1

Check out this link:

Click here

You can use :

@Override
public void onBackPressed()
{
     moveTaskToBack(true);
}

in all activities to close the app.