animation button moving in wheel like igun pro application for first screen iphone

I am newbie I stuck on one problem i want to make animation which have buttons and moving up and down as like wheel moving.You can see the application "iGun Pro" the same animation i want to make but i am not getting how to make this it's done in core animation or used open GL for the moving buttons.I am not interested now they given animation on text.So please help me if 开发者_如何学Pythonalso try to give code or some reference example so i can understand batter.I am not getting how i will search on the web for this animation .Any help appreciated Thank You.

I am very sorry for my bad English.

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Can you try this. The code is pasted here for moving a wheel up and down. You can use the same logic to move the button too. Link is here.