Accessing UIImagePickerController Camera's Preview Screen

I am working with a basic UIImagePickerController. I have read about camera overlays and am not ready / don't need to dive into that world yet. 开发者_JS百科

After the user takes a photo, the UIImagePickerController displays a "Preview" screen. All I want to do is change the text on the button on the preview screen from "Use" to "Upload".

It seems to me that there should be a very easy way to access this, but I have found very few references to the "Preview" screen.

Any assistance would be appreciated.

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That functionality is not exposed in the SDK. There is no way to customize the Preview screen.