iOS展示异步网络图片接口函数

// // UIImageView+URLImage.h // yeqq // // Created by fxs on 15/5/22. // Copyright (c) 2015年 User. All rights reserved. // #import <UIKit/UIKit.h> @interface ImageDownDelegate : NSObject /// ///// @end @interface UIImageView (URLImage) @property(nonatomic,strong)ImageDownDelegate* callback; -(void) setImageWithUrl:(NSString*)url imgName:(NSString*)imgName progress:(void(^)(int progress, NSError* error)) progress; @end ///// UIButton @interface UIButton (URLImage) -(void) setBackImageWithUrl:(NSString*)url imgName:(NSString*)imgName progress:(void(^)(int progress, NSError* error)) progress; @end ///// void get_http_data( NSString* url, void(^func)(int progress, NSError* error), void(^func2)(NSData* data, NSError* error));