IOS8 Modal View Controller like pop up

I thought this was a simple task, but the transparent background took me awhile to figure it out, so I am going to write it down here.

First must set the current view controller definesPresntationContext to YES, and popup view controller’s modalPresentationStyle to UIModalPresentationOverCurrentContext  

This setting allows the current context to be displayed as background when popup the new view controller.

 

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