CODEWITHSUNDEEP
iosobjective-cphpickerviewcontrollernsitemprovider
NSMoron
NSMoron

Reputation: 151

how to use loadItemForTypeIdentifier to load an image

I have the following function which loads an image using the new PHPickerViewController:

- (void) picker:(PHPickerViewController *)picker didFinishPicking:(NSArray<PHPickerResult *> *)results
{
    PHPickerResult *result = [results firstObject];
    
    if (result)
    {
       [result.itemProvider loadObjectOfClass:[UIImage class] completionHandler:^(__kindof id<NSItemProviderReading>  _Nullable object, NSError * _Nullable error)
       {
             dispatch_async(dispatch_get_main_queue(),
            ^{
                if (!error)
                {
                    [self pickerControllerDidFinishPickingWithImage:(UIImage *)object];
                }
                else
                {
                    [self pickerControllerDidFinishWithError];
                }
            });
       }];
    }
}

I want to avoid using loadObjectOfClass because I don't want the image to load asynchronously. So I opted to use loadItemForTypeIdentifier instead and did the following:

   [result.itemProvider loadItemForTypeIdentifier:@"public.image" options:nil completionHandler:^(__kindof id<NSItemProviderReading>  _Nullable object, NSError * _Nullable error)
   {
         dispatch_async(dispatch_get_main_queue(),
        ^{
            if (!error)
            {
                [self pickerControllerDidFinishPickingWithImage:(UIImage *)object];
            }
            else
            {
                [self pickerControllerDidFinishWithError];
            }
        });
   }];

However, when I run this code I am getting:

ncaught exception 'NSInvalidArgumentException', reason: '-[NSURL imageOrientation]: unrecognized selector sent to instance 0x600001ce5920' terminating with uncaught exception of type NSException

I am not that great with blocks and this is my first time using a UTI so I'm wondering, what am I doing wrong here? Is it even possible to accomplish what I'm trying to accomplish, i.e. pull a UIImage out using loadItemForTypeIdentifier? Am I getting the syntax wrong?

Upvotes: 0

Views: 579

Answers (0)

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