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#import <SDWebImage/UIImageView+WebCache.h> ... - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *MyIdentifier = @"MyIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier] autorelease]; } // Here we use the new provided sd_setImageWithURL: method to load the web image [cell.imageView sd_setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"] placeholderImage:[UIImage imageNamed:@"placeholder.png"]]; cell.textLabel.text = @"My Text"; return cell; }
The SDWebImageManager is the class behind the UIImageView+WebCache category. It ties the asynchronous downloader with the image cache store. You can use this class directly to benefit from web image downloading with caching in another context than a UIView (ie: with Cocoa).
NSURL *url = [NSURL URLWithString:@"http://127.0.0.1/userManager/0.png"]; //SDWebImageManager管理器继承与UIImageView+WedCache。已异步的方式进行下载图片到缓冲区。 SDWebImageManager *manager = [SDWebImageManager sharedManager]; [manager downloadImageWithURL:url options:0 progress:^(NSInteger receivedSize, NSInteger expectedSize) { NSLog(@"%ld,%ld",receivedSize,expectedSize); } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) { //为imageView设置图片为下载的图片 [self.imageView setImage:image]; //打印图片的来源 NSLog(@"%@",imageURL); }];
It‘s also possible to use the async image downloader independently:
[SDWebImageDownloader.sharedDownloader downloadImageWithURL:imageURL options:0 progress:^(NSInteger receivedSize, NSInteger expectedSize) { // progression tracking code } completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished) { if (image && finished) { // do something with image } }];
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原文地址：http://www.cnblogs.com/xjf125/p/4842089.html
