CODEWITHSUNDEEP
iphoneiosxcodeuiimagepickercontroller
Steven Marlowe
Steven Marlowe

Reputation: 230

Dismissing camera view crashes app

When I try to dismiss my UIImagePickerController, it crashes the app. the error is: "Terminating app due to uncaught exception 'UIApplicationInvalidInterfaceOrientation', reason: 'preferredInterfaceOrientationForPresentation must return a supported interface orientation!'"

I have the preferred interface orientation set in my view controller.

-(NSUInteger)supportedInterfaceOrientations
{
 return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
return UIInterfaceOrientationPortrait;
}

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

- (BOOL) shouldAutorotate {
return YES;
}

Here is the method I'm calling to bring up the camera, this works fine for adding the camera, but like I said, crashes when I try to remove the camera. 

-(IBAction)addCamera:(id)sender
{

self.cameraController = [[UIImagePickerController alloc] init];
self.cameraController.sourceType = UIImagePickerControllerSourceTypeCamera;

self.cameraController.cameraViewTransform = CGAffineTransformScale(self.cameraController.cameraViewTransform,
                                                                   1.13f,
                                                                   1.13f);

self.cameraController.showsCameraControls = NO;
self.cameraController.navigationBarHidden = YES;

self.wantsFullScreenLayout = YES;

ar_overlayView = [[UIView alloc] initWithFrame:CGRectZero];

self.view = ar_overlayView;
[self.cameraController setCameraOverlayView:ar_overlayView];
[self presentViewController:cameraController animated:NO completion:nil];
[ar_overlayView setFrame:self.cameraController.view.bounds];
}

-(IBAction)back:(id)sender
{
[ar_overlayView removeFromSuperview];
[cameraController dismissViewControllerAnimated:NO completion:nil];
}

Upvotes: 0

Views: 1134

Answers (5)

Joshua
Joshua

Reputation: 121

You can try remove this method:

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation

It will fix it.but sometimes it will lead to reduce stateBar height.

Upvotes: 1

Steven Marlowe
Steven Marlowe

Reputation: 230

Alright, found the solution, it was really simple, I just changed my back method to:

    [self dismissModalViewControllerAnimated:YES];

Now my camera goes away and I can see my original view when I press the back button. I still haven't figured out what was causing the original problem as I've gone through the info.plist and the methods for supported orientations, but this accomplishes what I wanted.

I'm still curious as to what was causing the error though if anyone has any ideas.

Upvotes: 1

gregheo
gregheo

Reputation: 4270

I don't think you need to add ar_overlayView to the current view yourself if it's a camera overlay.

Here's what your code is doing now:

  1. Add ar_overlayView to the current view
  2. Add ar_overlayView as the camera's overlay view
  3. Show the camera view (modal)

At this point, ar_overlayView is being displayed twice. When you send it the removeFromSuperview message on dismissing the camera view, it might be getting confused since it's in two view hierarchies at the same time.

Skipping the self.view = ar_overlayView; or [self.view addSubview:ar_overlayView]; lines should fix the problem.

Also, dismissViewControllerAnimated:completion: should be sent to the same object that presentViewController:animated:completion was called on (self in this case):

-(IBAction)addCamera:(id)sender
{
  // -- snip -- //
  ar_overlayView = [[UIView alloc] initWithFrame:self.cameraController.view.bounds];
  [self.cameraController setCameraOverlayView:ar_overlayView];
  [self presentViewController:self.cameraController animated:NO completion:nil];
}

-(IBAction)back:(id)sender
{
  [self dismissViewControllerAnimated:NO completion:nil];
}

Upvotes: 0

Alex McPherson
Alex McPherson

Reputation: 3195

You should be using the didFinishPickingMedieWithInfo method similar to below and use [self dismissModalViewControllerAnimated:YES];

-(void) imagePickerController:(UIImagePickerController *) picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {

    NSLog(@"Camera");


}

else {


    NSLog(@"Album");

 }

 [self dismissModalViewControllerAnimated:YES];
 }

Upvotes: 0

colincameron
colincameron

Reputation: 2703

You cannot remove a UIViewController's main view from its superview.

Instead of this:

self.view = ar_overlayView;

Try this:

[self.view addSubview:ar_overlayView];

Then you will be able to remove it from the superview correctly.

Upvotes: 0

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