block 页面传值

Block 传值

.h  

typedef void(^CountBlock)(NSIntegerfigure);

-(void)CountWithFigureBlock:(CountBlock)figureBlock;                       

.m     

CountBlock cBlock;

 #pragma mark - 块传值调用的方法

-(void)CountWithFigureBlock:(CountBlock)figureBlock

{

   cBlock=figureBlock;

}

块的使用

InCashViewController *cashVC = [InCashViewControllernew];

       [cashVC CountWithFigureBlock:^(NSInteger figure) {

           NSString * str=[NSString stringWithFormat:@"%ld",figure];

           reduceStr=str;

       }];

原文：http://blog.csdn.net/summer493506332/article/details/47259567