Photos Framework requestImageDataForAsset occasionally fails

Question

I\'m using the photos framework on iOS8.1 and requesting the image data for the asset using requestImageDataForAsset... Most of the time it works and I get the image data an

Answer 1

The following code maybe help. I think the class PHImageRequestOptions has a bug, so I pass nil , and then fix the bug.

   dispatch_semaphore_t sema = dispatch_semaphore_create(0);
            [[PHImageManager defaultManager] requestImageDataForAsset:asset options:nil resultHandler:^(NSData * _Nullable imageData, NSString * _Nullable dataUTI, UIImageOrientation orientation, NSDictionary * _Nullable info) {
                assetModel.size = imageData.length;
                NSString *filename = [asset valueForKey:@"filename"];
                assetModel.fileName = filename;
                dispatch_semaphore_signal(sema);
            }];
            dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);