showing button on the view

I 开发者_如何学运维have one empty view and some actions on the view toolbar. When I click any of the actions, I need to show one button on the view. so we can it is some kind of dynamic rendering on the view.How do I do that?

I have made a small example on how to create the toolbar, the handler and button in the view... See so-viewaction.zip. Hope it helps.