CameraOverlayView higher shutter animation

Question

I have a transparent view with a rectangle drawn on it using CoreGraphics. When the camera launches a custom overlay view above the shutter animation. What you see is a standard camera shutter with a custom rectangle above it. How do I get it to go in the right place, under the shutter animation? I looked at another sample code, but it is for OS 3.1 and does not seem to do anything differently.

Here is my code:

-(IBAction)cameraButton{ if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerCameraDeviceRear]){ UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.delegate = self; picker.sourceType = UIImagePickerControllerSourceTypeCamera; //Add the OverlayView with the custom Rectangle CGRect overlayFrame = CGRectMake(0.0f, 0.0f, 320.0f, 480.0f); OverlayView *overlayView = [[OverlayView alloc]initWithFrame:overlayFrame]; picker.cameraOverlayView = overlayView; [overlayView release]; [self presentModalViewController:picker animated:YES]; [picker release]; } } 

Answer 1

This problem does not exist on the iPad, and by default, the overlay view is behind the shutter animation. But on the iPhone, the overlay appears in front.

I found a solution that worked for me.

In this method, you should set your overlay view as a subitem:

 - (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated { if (!viewController) return; UIView* controllerViewHolder = viewController.view; UIView* controllerCameraView = [[controllerViewHolder subviews] objectAtIndex:0]; UIView* controllerPreview = [[controllerCameraView subviews] objectAtIndex:0]; [controllerCameraView insertSubview:self.overlayView aboveSubview:controllerPreview]; } 

Hope this helps

Source: http://www.alexcurylo.com/blog/2009/06/18/uiimagepickercontroller-in-3-0/

Answer 2

You can do nothing else than what you are already doing; if iOS decides to place your overlay view on top of the shutter, you just need to live with it (if you don’t want to risk getting a rejection from the app store).

As an imperfect workaround, you can start your overlay with alpha = 0, and then set alpha 1 second or two later. But there is no set period of time when the shutter appears before “opening” (I think it depends on how long it takes to initialize the camera’s hardware), so sometimes your interface may appear until late and sometimes it may appear too early.

Answer 3

As in 4.3.3, the shutter animation is broken because the elements are displayed on top and then clicked under the start of the animation. I filed this as a radar: http://openradar.appspot.com/radar?id=1204401

Answer 4

I answered a similar question here . What worked for me (in iOS 6) was setting the camera OverlayView in navigationController: willShowViewController: animated.

 - (void) navigationController:(UINavigationController*) navigationController willShowViewController:(UIViewController*) viewController animated:(BOOL) animated { self.imagePickerController.cameraOverlayView = ...; // your camera overlay view }