How to change the size width of UIImagePickerController on iPad? - objective-c

Question

How to change the size width of UIImagePickerController on iPad? I can change the height so it is 700 but can't change width and it still 320.
My code.
UIImagePickerController* imagePicker=[[UIImagePickerController alloc]init];
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.delegate=self;
CGRect myRect = CGRectMake(imagePicker.view.frame.origin.x, imagePicker.view.frame.origin.y, 720, 700);
imagePicker.view.frame = myRect;
self.popover = [[UIPopoverController alloc] initWithContentViewController:imagePicker];
myRect = CGRectMake(100, 880, 900, 900);
CGRect re2 = CGRectMake(0,0,800,800);
[self.popover setPopoverContentSize:re2.size];
[self.popover presentPopoverFromRect:[self.view bounds] inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
[self.popover presentPopoverFromRect:myRect inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
[self.popover setPopoverContentSize:re2.size];

Answer 1

I had your same problem and I solved with the UINavigationControllerDelegate, since the UIImagePickerView content for the PhotoLibrary is a navigatorController. When you select a row it changes ViewController and the size of the popover changes as well.
So, in your willShowViewController delegate just put:
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
viewController.contentSizeForViewInPopover = CGSizeMake(800, 800);
}
This will prevent the resizing of the popover.

Answer 2

This simplified code worked fine for me:
UIImagePickerController* imagePicker=[[UIImagePickerController alloc]init];
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
self.popover = [[UIPopoverController alloc] initWithContentViewController:imagePicker];
[self.popover presentPopoverFromRect:CGRectMake(100, 880, 1, 1) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
[self.popover setPopoverContentSize:CGSizeMake(700, 700)];

Answer 3

iOS 9 and above.
Another way is it to use ContainerViewController and add UImagePickerViewController to ContainerViewController. overriding size in UINavigationControllerDelegate methods has its limits. (not possible to go down on height below 600pt)
_imagePicker = [[UIImagePickerController alloc] init];
_imagePicker.delegate = self;
_imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
_imagePicker.preferredContentSize = CGSizeMake(320, 480);
UIViewController *containerViewController = [[UIViewController alloc] init];
containerViewController.preferredContentSize = _imagePicker.preferredContentSize;
[containerViewController addChildViewController:_imagePicker];
[containerViewController.view addSubview:_imagePicker.view];
[_imagePicker didMoveToParentViewController:containerViewController];
if (!_imagePickerPopover) {
//customize PopoverController, use your own
_imagePickerPopover = [[PopoverController alloc] init:cnt];
}