iOS-代理委托的使用

#import "Rigester_ViewController.h"

#import "Rigester_ViewController.h"

@interface Rigester_ViewController ()

@end

@implementation Rigester_ViewController

*

正向传值可以用属性

反向传值代理Block

代理：又叫委托
自己不能办得事委托给别人去干

UIAlertView,UITextField 都使用了代理

写代理的步骤：

// 需要代理，委托的人

1.声明代理里面的协议方法（@protocol）

2.声明协议的属性

3.什么时候需要触发这个代理方法

4.通过协议的属性调用代理方法（委托）

// 代理者，被委托的人需要做的事

5.导入协议

6.在初始化有代理方法的对象的地方
挂上代理（代理者响应代理）

7.写上代理方法
等待被执行

*/

- (void)viewDidLoad {

[super viewDidLoad];

self.title = _titleName;

UIButton *rigesterButton = [UIButton buttonWithType:UIButtonTypeCustom];

rigesterButton.frame = CGRectMake(150, 550, 100, 50);

[self.view addSubview:rigesterButton];

rigesterButton.backgroundColor = [UIColor orangeColor];

rigesterButton.showsTouchWhenHighlighted = YES;

rigesterButton.layer.cornerRadius = 10;

[rigesterButton setTitle:@"注册" forState:UIControlStateNormal];

[rigesterButton addTarget:self action:@selector(toRigester) forControlEvents:UIControlEventTouchUpInside ];

}

//什么时候触发这个代理方法

- (void)toRigester

{

[self.navigationController popViewControllerAnimated:YES];

// 4.通过协议的属性调用代理的方法

[self.delegate toLoginWithName:@"JZQ"];

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

/*

#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

// Get the new view controller using [segue destinationViewController].

// Pass the selected object to the new view controller.

}

*/

@end

@interface Rigester_ViewController ()

@end

@implementation Rigester_ViewController

- (void)viewDidLoad {

[super viewDidLoad];

self.title = _titleName;

UIButton *rigesterButton = [UIButton buttonWithType:UIButtonTypeCustom];

rigesterButton.frame = CGRectMake(150, 550, 100, 50);

[self.view addSubview:rigesterButton];

rigesterButton.backgroundColor = [UIColor orangeColor];

rigesterButton.showsTouchWhenHighlighted = YES;

rigesterButton.layer.cornerRadius = 10;

[rigesterButton setTitle:@"注册" forState:UIControlStateNormal];

[rigesterButton addTarget:self action:@selector(toRigester) forControlEvents:UIControlEventTouchUpInside ];

}

//什么时候触发这个代理方法

- (void)toRigester

{

[self.navigationController popViewControllerAnimated:YES];

// 4.通过协议的属性调用代理的方法

[self.delegate toLoginWithName:@"JZQ"];

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

/*

#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

// Get the new view controller using [segue destinationViewController].

// Pass the selected object to the new view controller.

}

*/

@end