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Merge pull request #854 from Gabro/patch-1 

More explicit error message in case of nil completedBlock
This commit is contained in:
Bogdan Poplauschi 2014-08-12 12:26:01 +03:00
parent 16eea9f104 ec6b6e7267
commit 15cda1b561
1 changed files with 1 additions and 1 deletions
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2
SDWebImage/SDWebImageManager.m
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@ -112,7 +112,7 @@
progress:(SDWebImageDownloaderProgressBlock)progressBlock
completed:(SDWebImageCompletionWithFinishedBlock)completedBlock {
// Invoking this method without a completedBlock is pointless
NSParameterAssert(completedBlock);
NSAssert(completedBlock != nil, @"If you mean to prefetch the image, use -[SDWebImagePrefetcher prefetchURLs] instead");
// Very common mistake is to send the URL using NSString object instead of NSURL. For some strange reason, XCode won't
// throw any warning for this type mismatch. Here we failsafe this error by allowing URLs to be passed as NSString.