ios - Linking Button to Next View Controller -

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i can't seem figure out xcode 6 how connect button go next view controller. in view controller scene, have 2 view controllers, vc1 , vc2. vc1 has button , want vc1 first, , have user click button, lead vc2. how do that? basically, how link button in vc1 vc2?

just press control key , drag uibutton onto view controller

transition between twio views


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