DroidFuApp's onClose can not work

[13leaf]

I use droidfu in samsung p1000,then I notice that DroidFuApp can't receive onClose method.
I have read some source code about DroidFu.I know it overload onKeyDown to check activity's back action.
But it really have some issues,such as following:
1.If I overload onKeyDown,and prevent default back action,and handler exit by myself.It won't work.Why do not you use onDestroy to check?
2.To check if the activity is the last of app.DroidFu use something wrong strategy.Firstly,not every android device use the default launcher,so check packageName==com.android.launcher is not right.Secondly,if I start myApp from another app.Then,whatever they are in different.onClose will work not as expected.