vc2中：头文件
1
typedef void(^attentionBlock)(id sender);
2
@property (nonatomic,copy) attentionBlock attentionblock;
3
- (void)attentionwithBlock:(attentionBlock)block;
.m中
4 实现方法
- (void)attentionwithBlock:(attentionBlock)block{
self.attentionblock = block;
}
5 按钮点击事件
- (void)attentionSelect{
self.attentionblock(_indexPathCell);
}
vc1中
6
[vc2 attentionwithBlock:^(id obj) {
}];
原文：http://www.cnblogs.com/lyl-/p/4522896.html