iOS 图片缓存库 GDRSImageCache
GDRSImageCache 是 iOS 一个非常小型的图片缓存和更改图片大小的开发包。给定一个 URL 后该库会通过后台线程获取图片并在内存中缓存。
使用方法:
UIImageView *anImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];// create the cacheGDRSImageCache *cache = [[GDRSImageCache alloc] initWithCachedImageFilter:^UIImage *(UIImage *sourceImage) { // resize the image to the image view size and round the image corners; // this is called by the cache on a background thread return [sourceImage gdrs_resizedImageToAspectFitSize:anImageView.bounds.size cornerRadius:10];}];// set the default image, which will be returned from// fetchImageWithURL:completionHandler: if an image coresponding to the// requested url is not cached yet.cache.defaultImage = [UIImage imageNamed:<#place holder image name#>];NSURL *imageUrl = <#an url to a image#>;// fetch an image; the call returns imidiatly and the callback handler// is called when the image is fetched over the networkanImageView.image = [cache fetchImageWithURL:imageUrl completionHandler:^(UIImage *image, NSError *error) { anImageView.image = image;}];