SDWebImage

2016-07-22 16:54:02   0  举报

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仅支持查看

SDWebImage是一个用于处理图片的iOS库，它提供了一种简单、高效的方式来加载和缓存网络图片。通过使用SDWebImage，开发者可以轻松地在应用程序中显示图片，而无需担心内存占用和性能问题。SDWebImage支持异步加载图片，这意味着在加载图片时，用户界面仍然可以保持流畅。此外，SDWebImage还提供了丰富的功能，如图片裁剪、缩放、旋转等，以满足不同场景的需求。总之，SDWebImage是一个强大且易于使用的iOS图片处理库，可以帮助开发者快速实现高质量的图片展示功能。

作者其他创作

大纲/内容

SDWebImageCombinedOperation（Singleton）

SDImageCache *imageCacheSDWebImageDownloader *imageDownloaderNSMutableSet *failedURLsNSMutableArray *runningOperations

- self.runningOperations addObject:operation

SDWebImageManager（Singleton）

- (SDImageCache *)createCache- (id )downloadImageWithURL:(NSURL *)url options:(SDWebImageOptions)options progress:(SDWebImageDownloaderProgressBlock)progressBlock completed:(SDWebImageCompletionWithFinishedBlock)completedBlockcacheKeyForURL- (id )downloadImageWithURL:(NSURL *)url options:(SDWebImageOptions)options progress:(SDWebImageDownloaderProgressBlock)progressBlock completed:(SDWebImageCompletionWithFinishedBlock)completedBlock- (NSString *)cacheKeyForURL:(NSURL *)url- (NSOperation *)queryDiskCacheForKey:(NSString *)key done:(SDWebImageQueryCompletedBlock)doneBlock

实例化

UIImageView (WebCache)

- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder- (void)sd_setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options progress:(SDWebImageDownloaderProgressBlock)progressBlock completed:(SDWebImageCompletionBlock)completedBlock

SDImageCache（Singleton）

+ (SDImageCache *)sharedImageCache（Singleton method）- (id)initWithNamespace:(NSString *)ns （init Property）-(NSString *)makeDiskCachePath:(NSString*)fullNamespace- (NSString *)cachedFileNameForKey:(NSString *)key (MD5 secret)#public method- (NSString *)defaultCachePathForKey:(NSString *)key- (NSString *)cachePathForKey:(NSString *)key inPath:(NSString *)path#notification method- (void)clearMemory- (void)clearDisk- (void)backgroundCleanDisk