Take a picture, choose between Full or Square Mode in camera

Question

Is there a way to use the overlays in the UIImagePickerController to show the square picture a user might use, while having a toggle button in there somewhere to switch on the fly?

Currently the iOS 7 camera has this capability, but UIImagePickerController does not (thanks Apple), so is there a way to add this functionality?

Would using AVCaptureSession be necessary? It seems like serious overkill, and I'd have to program flash/focus/etc all over again, I think.

Failing that, is there a customizable class that already exists that I could just implement?

I'm banging my head against the wall trying to figure out the best course of action here, so any help would be appreciated.

Answer 1

You can adjust the camera view by transforming the scale

CGAffineTransform transform = CGAffineTransformMakeScale(1.0, 0.5);
imagePickerController.cameraViewTransform = transform;

with the arguments being the scale to change the x and y axis of the camera screen by. You could add a button that re-presents the camera view within the view controller at the top of your hierarchy. It may not perfectly recapitulate the native phone app, but it will be a pretty good approximation.