iOS: UIImagePickerController Issue - objective-c

Question

I'm trying to use UIImagePickerController to grab a photo from the users Photos on their iPhone / iPad. This code works just fine for iPhone, but when I run it on iPad, the debugger gives me the message "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'On iPad, UIImagePickerController must be presented via UIPopoverController'". I'm very new to Objective-C, so I'm unsure of how to edit this code to use UIPopoverController when its being run on the iPad. I'd rather not create 2 new View Controllers, so I was wondering if someone knows what code I would need to add in to have it work on both the iPhone and iPad. Here is the code in my view controllers:
ViewController.h:
#interface PhotoViewController : UIViewController <UINavigationControllerDelegate, UIImagePickerControllerDelegate> {
UIButton *grabButton;
UIImageView *image;
UIImagePickerController *imgPicker;
}
#property (strong, nonatomic) IBOutlet UIButton *grabButton;
#property (strong, nonatomic) IBOutlet UIImageView *image;
#property (strong, nonatomic) UIImagePickerController *imgPicker;
- (IBAction)grabImage;
#end
ViewController.m:
#import "PhotoViewController.h"
#implementation PhotoViewController
#synthesize grabButton;
#synthesize image;
#synthesize imgPicker;
- (IBAction)grabImage {
[self presentModalViewController:self.imgPicker animated:YES];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo {
image.image = img;
[[picker parentViewController] dismissModalViewControllerAnimated:YES];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
self.title = NSLocalizedString(#"Photo Gallery", #"Photo Gallery");
self.tabBarItem.image = [UIImage imageNamed:#"42-photos.png"];
}
return self;
}
- (void)viewDidLoad
{
self.imgPicker = [[UIImagePickerController alloc] init];
self.imgPicker.allowsImageEditing = YES;
self.imgPicker.delegate = self;
self.imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[super viewDidLoad];
}
Thanks in advance!

Answer 1

You have the answer through that error message !
Use UIPopOverController with UIImagePicker for iPad.
If you want to know how to use UIPopOverController, you can look at this tutorial !
Another youtube tutorial - http://www.youtube.com/watch?v=6Gc3kxVwfmE

Answer 2

Like Legolas mentioned, in an iPad app you must use a UIPopOverController in order to present an imagePicker. I'm usually not a fan of having any code in my app that performs tasks based on device type, but if you don't find a better solution you can do the following.
if ([[UIDevice currentDevice].model isEqual:#"iPad"])
{
// Display image picker in a popover
}
else
{
// display imagePicker as a modal
}
Check the documentation for device models:
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIDevice_Class/Reference/UIDevice.html

Answer 3

It's worked for me. Please try below code
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:self.imgpicker];
popover.delegate =self;
[popover presentPopoverFromRect:self.view.bounds inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];}else{
[self presentModalViewController:self.imgpicker animated:YES];
}