UIImagePickerController in UIPopoverController is showing as blank white view - ios

Question

I'm currently writing an iOS app wherein I want to let the user pick an image from their photo library. I don't want them to be able to take a new photo or edit the existing one, but that's unimportant right now. Since this is an iPad app, I have to show the UIImagePickerController view in a popover view (or an exception is thrown, etc.). This is the code I am currently using to try to achieve that:
- (void)viewDidLoad{
[super viewDidLoad];
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]){
_picker = [[UIImagePickerController alloc] initWithRootViewController:self];
_picker.delegate = self;
}else{
[[[UIAlertView alloc] initWithTitle:#"goto fail;" message:nil delegate:nil cancelButtonTitle:#"Okay" otherButtonTitles:nil] show];
}
self.view.backgroundColor = [UIColor purpleColor];
}
- (void)viewDidAppear:(BOOL)animated{
popoverController = [[UIPopoverController alloc] initWithContentViewController:_picker];
[popoverController presentPopoverFromRect:(CGRect){CGPointZero, {1, 1}} inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:animated];
[super viewDidAppear:animated];
}
I expect this to show an image picker view in a popover, obviously. Instead, I get this:
This code is running on a real iPad, not in the simulator. I have never been prompted to grant access to my photos, and there is no entry for the app in the photo area of the privacy settings of Preferences.app. I am testing this on an iPad 4 (which has a camera), and cannot test in the simulator, as it is having issues at the moment. I'm not really sure where the issue could be coming from - it's quite perplexing.

Answer 1

Also you should specify UIImagePicker's sourceType.
_picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
UPDATE
Initialise picker this way:
_picker = [[UIImagePickerController alloc] init];