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Clarify the block comment in SDWebImageManager

This commit is contained in:
Weiming Wu 2018-03-07 18:09:48 -08:00
parent 5147ae5c89
commit 09639a8795
1 changed files with 1 additions and 1 deletions
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SDWebImage/SDWebImageManager.m
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@ -186,7 +186,7 @@
downloaderOptions |= SDWebImageDownloaderIgnoreCachedResponse;
}
// `SDWebImageCombinedOperation` -> `SDWebImageDownloadToken` -> `downloadOperationCancelToken`, which is a `SDCallbacksDictionary` and retain the completed block bellow, so we need weak-strong again to avoid retain cycle
// `SDWebImageCombinedOperation` -> `SDWebImageDownloadToken` -> `downloadOperationCancelToken`, which is a `SDCallbacksDictionary` and retain the completed block below, so we need weak-strong again to avoid retain cycle
__weak typeof(strongOperation) weakSubOperation = strongOperation;
strongOperation.downloadToken = [self.imageDownloader downloadImageWithURL:url options:downloaderOptions progress:progressBlock completed:^(UIImage *downloadedImage, NSData *downloadedData, NSError *error, BOOL finished) {
__strong typeof(weakSubOperation) strongSubOperation = weakSubOperation;