//
// SecondViewController.h
// Block高级
//
// Created by 李洪鹏 on 15/7/15.
// Copyright (c) 2015年 李洪鹏. All rights reserved.
//
#import <UIKit/UIKit.h>
//声明block
typedef void(^ReturnTextBlock)(NSString *showText);
@interface SecondViewController : UIViewController
//声明block的属性
@property (nonatomic,copy)ReturnTextBlock returnTextBlock;
//声明block的方法
- (void)returnText:(ReturnTextBlock)block;
@end
// 调用block
_returnTextBlock(_secondView.NametextField.text);
[self.navigationController popViewControllerAnimated:YES];