Question

My application is set in info.plist to support only portrait mode.

However, the UIImagePickerController, rotates when the user rotates the screen to landscape.

Since in io6 the method shouldAutoRotate is not being called, I tried to extend it like this:

@interface NonRotatingUIImagePickerController : UIImagePickerController

@end

@implementation NonRotatingUIImagePickerController

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;

}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationMaskPortrait;
}

@end 

But it doesn’t help. Any idea why?

And in the log I see the above methods being called. The UIImagePickerController at first is displayed in portrait and when the user rotates – it rotates as well instead of staying portrait.

I set the image picker in the view like this:

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (!self.imagePickerController) {
        self.imagePickerController = [[NonRotatingUIImagePickerController alloc] init];
        self.imagePickerController.delegate = self;
    }
    return self;
}

- (void)viewDidAppear:(BOOL)animated{
   self.imagePickerController.showsCameraControls = NO;
   CGRect imagePickerControllerFrame = CGRectMake(0, topBar.frame.size.height, self.view.frame.size.width, self.view.frame.size.height - topBar.frame.size.height - bottomBar.frame.size.height);
   self.imagePickerController.view.frame = imagePickerControllerFrame;
   self.imagePickerController.allowsEditing = YES;
   self.imagePickerController.view.clipsToBounds = YES;
  self.imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera
  [self.view.window addSubview:self.imagePickerController.view];
}

Answer 1

self.imagePickerController.view.frame = imagePickerControllerFrame;
// ...
[self.view.window addSubview:self.imagePickerController.view];

Well, that’s all totally illegitimate. Apple makes this very clear in the docs:

This class is intended to be used as-is and does not support subclassing. The view hierarchy for this class is private and must not be modified

There is only one correct way to use an image picker controller that uses UIImagePickerControllerSourceTypeCamera – as a fullscreen presented view controller:

BOOL ok = [UIImagePickerController isSourceTypeAvailable:
           UIImagePickerControllerSourceTypeCamera];
if (!ok) {
    NSLog(@"no camera");
    return;
}
NSArray* arr = [UIImagePickerController availableMediaTypesForSourceType:
                UIImagePickerControllerSourceTypeCamera];
if ([arr indexOfObject:(NSString*)kUTTypeImage] == NSNotFound) {
    NSLog(@"no stills");
    return;
}
UIImagePickerController* picker = [UIImagePickerController new];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.mediaTypes = @[(NSString*)kUTTypeImage];
picker.delegate = self;
[self presentViewController:picker animated:YES completion:nil];

If you want to present a live picture-taking interface inside your own interface, use AVFoundation and the camera capture API that it gives you.

Downloadable working example here:

https://github.com/mattneub/Programming-iOS-Book-Examples/blob/master/ch30p816cameraCaptureWithAVFoundation/p683cameraCaptureWithAVFoundation/ViewController.m