iOS UI04_Delegate

//
//  AppDelegate.m
//  UI04_Delegate
//
//  Created by dllo on 15/8/3.
//  Copyright (c) 2015年 zhozhicheng. All rights reserved.
//

#import "AppDelegate.h"
#import "MainViewController.h"
@interface AppDelegate ()

@end

@implementation AppDelegate
-(void)dealloc
{
    [_window release];
    [super dealloc];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    [_window release];

    MainViewController *mainVC=[[MainViewController alloc] init];
    self.window.rootViewController=mainVC;
    [mainVC release];

    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

//
//  MyButton.h
//  UI04_Delegate
//
//  Created by dllo on 15/8/3.
//  Copyright (c) 2015年 zhozhicheng. All rights reserved.
//

#import <UIKit/UIKit.h>
//1.声明一份协议
@protocol MyButtonDelegate <NSObject>

-(void)changeColor;

@end

@interface MyButton : UIView
//2.设置代理人的属性
@property(nonatomic,assign)id<MyButtonDelegate>delegate;

@end

//
//  MyButton.m
//  UI04_Delegate
//
//  Created by dllo on 15/8/3.
//  Copyright (c) 2015年 zhozhicheng. All rights reserved.
//

#import "MyButton.h"

@implementation MyButton

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    //3.设置代理人执行的方法
    [self.delegate changeColor];

}

@end

//
//  MainViewController.m
//  UI04_Delegate
//
//  Created by dllo on 15/8/3.
//  Copyright (c) 2015年 zhozhicheng. All rights reserved.
//

#import "MainViewController.h"
#import "MyButton.h"
@interface MainViewController ()<MyButtonDelegate>

@end

@implementation MainViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    //5.设置代理人

    MyButton *button1=[[MyButton alloc] init];
    button1.frame=CGRectMake(100, 100, 140, 40);
    button1.layer.borderWidth=1;
    button1.layer.cornerRadius=10;
    button1.backgroundColor=[UIColor yellowColor];
    [self.view addSubview:button1];
    [button1 release];

    button1.delegate=self;
}

-(void)changeColor
{
    self.view.backgroundColor=[UIColor colorWithRed:arc4random() % 256 / 255.0  green:arc4random() % 256 / 255.0 blue:arc4random() % 256 / 255.0 alpha:1];
}

- (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

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