自己写的下载数据的方法(GET和POST两种)(已经封装)

DownLoadTool.h

#import <Foundation/Foundation.h>

//定义一个block,用来传值
typedef void (^PassValueBlock)(id value);

@interface DownLoadTool : NSObject

+(void)downLoadWtithURL:(NSString *)urlStr method:(NSString *)method param:(NSDictionary *)paramDic passValue:(PassValueBlock)passValue;

@end
#import <Foundation/Foundat