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;

}];