objective c - iOS 8 PhotoKit. Get maximum-size image from iCloud Photo Sharing albums

Question

How get access to the full-size images from iСloud? Every time I try to get this picture, I get image size 256x342. I not see progress too.

Code:

    PHFetchResult *result = [PHAsset fetchAssetsWithLocalIdentifiers:@[assetIdentifier] options:nil];
    PHImageManager *manager = [PHImageManager defaultManager];
    [result enumerateObjectsUsingBlock:^(PHAsset *asset, NSUInteger idx, BOOL *stop) {

        PHImageRequestOptions *options = [[PHImageRequestOptions alloc] init];
        options.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;
        options.synchronous = YES;
        options.networkAccessAllowed = YES;
        options.progressHandler = ^(double progress, NSError *error, BOOL *stop, NSDictionary *info) {
            NSLog(@"%f", progress);
        };

        [manager requestImageForAsset:asset targetSize:PHImageManagerMaximumSize contentMode:PHImageContentModeDefault options:options resultHandler:^(UIImage *resultImage, NSDictionary *info)
         {
             UIImage *image = resultImage;
             NSLog(@"%@", NSStringFromCGSize(resultImage.size));
         }];
    }];

Until I click the picture in Photo app, this picture will be of poor quality. But as soon as I click on the picture, it downloaded on the device and will be full-size quality.

Answer 1

I think the below should get the full resolution image data:

 [manager requestImageDataForAsset:asset 
                           options:options 
                     resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) 
             { 
                  UIImage *image = [UIImage imageWithData:imageData]; 

                  //...

             }];

The entire Photos Framework (PhotoKit) is covered in the WWDC video: https://developer.apple.com/videos/wwdc/2014/#511

Hope this helps.

Edit:

The resultHandler can be called twice. This is explained in the video I linked to at around 30:00. Could be that you are only getting the thumbnail and the full image will come with the second time its called.