Question

I have an app with a camera overlay.
Into this overlay view I have 2 imageViews and 1 View.
1 image view for overlay graphic drawing.
I image view to put the taken picture into it.
I custom View for some custom drawing.

When the iPhone is in horizontal position when taking the photo, the displayed photo into the image view is rotated. So I have a big space on both sides of the picture.

I’ve tried to put this into the OverlayViewController but without any effect :

shouldAutorotateToInterfaceOrientation
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

All view and image view have the same params into IB (for those params that are common).

How may I prevent the picture to rotate into the image view when the phone is not vertical ?

Note : I must be able to keep the ability to auto rotate the other views that I can display in the app.

Answer 1

In your view controller’s willAnimateRotationToInterfaceOrientation:duration: method, you can apply an opposite rotation to the UIImageView’s transform property. For example, if the controller is rotating to UIInterfaceOrientationLandscapeLeft, that is a 90° clockwise rotation from portrait. So if you apply a 90° counterclockwise rotation to the image view, it will seem to not have rotated at all.