在相机模式下呈现UIImagePickerController会导致iOS 7崩溃

Question

At the time of presenting UIImagePickerController in camera mode using the code below, Xcode 5 memory view shows that my app consumes about 20 MB. When I present the controller, I receive memory warning in the overrode didReceiveMemoryWarning. But even without a chance to release any resources in there, the app just crashes without leaving any log messages. I am running the code in an iPhone 4S. I see other similar questions but the symptoms are slightly different than mine and I don't see any clear answers that led to resolving my issue. The same code does not cause a problem in iOS 6 or when I present the controller in photo library mode. My specific questions are:

1. Would it be normal to get memory warning with about 20 MB memory usage when presenting UIImagePickerController in camera mode?

2. Should I deal with this problem by reducing the memory consumption level further before I present the UIImagePickerController?

===

- (IBAction)cameraClicked:(id)sender
{
    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
    imagePicker.delegate = self;
    imagePicker.navigationBarHidden = YES;
    imagePicker.toolbarHidden = YES;
    imagePicker.allowsEditing = NO;

    imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;  
    [self presentViewController:imagePicker animated:YES completion:nil];
}

Answer 1

What is the error you are getting is it ? EXC_BAD_ACCESS Try to debug with NSZombieEnabled available in instruments and also Symbolic and exceptional breakpoints so that you can trace the reason for the crash.