How to disable the click sound of the iPhone Camera through code?

I have to disable the click sound of the iPhone Camera in my app. Pl开发者_开发技巧ease provide the code if possible?

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When the user presses the Click button or maybe when your app is launched, rename file /System/Library/Audio/UISounds/photoShutter.caf to maybe /System/Library/Audio/UISounds/photoShutter1.caf

When the photo is done clicking, rename it back to original.

Hope this helps.