Just tried it and it works properly here. Which error do you get?
I'm sorry for my stupid.
I'm just tried again,and found my mistake about programming. I comment Activity.loadlayout("1") and delete 1.bal , after then I use coding instead of them,but I created these
Label1.Initialize("Label1_Click") <== my mistake
Activity.AddView(Label1,30,40,190,50)