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2014.11.21 14:41

[ios] 비동기 블럭 코드 예제

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- (void)loadThumbnailImage:(void (^)())completionBlock {
    dispatch_queue_t fetchQ = dispatch_queue_create("ConfigureCell", NULL);
    dispatch_async(fetchQ, ^{
        NSURL *address = [NSURL URLWithString:self.smallPictureURl];
        UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:address]];
        dispatch_async(dispatch_get_main_queue(), ^{
            self.thumbnailImage = image;
            completionBlock();
        });
    });
}

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