新建两个类MainViewController／ButtonView

ButtonView.h

#import <UIKit/UIKit.h>
@interface ButtonView : UIView
//实现target－action设计模式
//点击的时候让谁去执行方法
@property (nonatomic , assign) id target;
//要执行的方法
@property (nonatomic , assign) SEL action;
//模拟一个UIButton的一个方法
- (void)addTarget:(id)target action:(SEL)action;
@end

ButtonView.m

#import "ButtonView.h"
@implementation ButtonView
- (id)initWithFrame:(CGRect)frame
{self = [super initWithFrame:frame];if (self) {// Initialization code}return self;
}
//建立一个view，让这个view的作用和UIButton类似 作用；点击能够响应事件
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{//点击时候就有反应}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{NSLog(@"摸完了，可口可乐，冒泡");//每当view被点击的时候，就让target执行action方法//target\action设计模式核心[_target performSelectorInBackground:self.action withObject:self];
}
//利用方法给view设置对象和对象要执行的方法
- (void)addTarget:(id)target action:(SEL)action
{self.target = target;self.action = action;
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{// Drawing code
}
*/
@end

MainViewController.h

#import <UIKit/UIKit.h>
@interface MainViewController : UIViewController
@end

MainViewController.m

#import "MainViewController.h"
#import "ButtonView.h"
@interface MainViewController ()
@end
@implementation MainViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];if (self) {// Custom initialization}return self;
}
- (void)viewDidLoad
{[super viewDidLoad];// Do any additional setup after loading the view.ButtonView *button = [[ButtonView alloc] initWithFrame:CGRectMake(120, 50, 80, 30)];button.backgroundColor = [UIColor purpleColor];button.alpha = 0.3;button.layer.cornerRadius = 10;//给view添加一个触发方法[button addTarget:self action:@selector(buttonClicked:)];[self.view addSubview:button];[button release];//UIImageView  //是一个显示图片的viewUIImageView *p_w_picpathView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 50, 50)];[self.view addSubview:p_w_picpathView];[p_w_picpathView release];//给p_w_picpathView设置一个显示的图片UIImage *p_w_picpath = [UIImage p_w_picpathNamed:@"1.png"];p_w_picpathView.p_w_picpath = p_w_picpath;//如果在p_w_picpathView 上添加按钮等视图，需要打开p_w_picpathView的用户交互属性[p_w_picpathView setUserInteractionEnabled:YES];UIImageView *p_w_picpathView1 = [[UIImageView alloc] initWithFrame:CGRectMake(160, 100, 50, 50)];[self.view addSubview:p_w_picpathView1];[p_w_picpathView1 release];UIImage *p_w_picpath1 = [UIImage p_w_picpathNamed:@"2.png"];p_w_picpathView1.p_w_picpath = p_w_picpath1;}
- (void)buttonClicked:(ButtonView *)button
{NSLog(@"button触发后的方法");
}
- (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

AppDelegate.h

#import <UIKit/UIKit.h>
@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@end

AppDelegate.m

#import "AppDelegate.h"
#import "MainViewController.h"
@implementation AppDelegate
- (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];//初始化视图控制器MainViewController *mainVC = [[MainViewController alloc] init];self.window.rootViewController = mainVC;[mainVC release];[self.window makeKeyAndVisible];[_window release];return YES;
}
- (void)dealloc
{[_window release];[super dealloc];
}
- (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