UI3

// // AppDelegate.m // UI3_ViewController初步 // // Created by zhangxueming on 15/6/30. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import "AppDelegate.h" @interface AppDelegate () @end @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. //视图控制器 //包含视图部分及控制部分 //通过视图控制器管理视图 NSLog(@"rootViewController = %@", self.window.rootViewController); self.window.backgroundColor = [UIColor cyanColor]; return YES; }

 

// // ViewController.m // UI3_ViewController初步 // // Created by zhangxueming on 15/6/30. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:YES]; CGRect rect = CGRectMake(20,100, self.view.frame.size.width-40, self.view.frame.size.height-200); self.view.frame = rect; NSLog(@"view = %@", self.view); } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. CGRect rect = CGRectMake(20,100, self.view.frame.size.width-40, self.view.frame.size.height-200); self.view.frame = rect; self.view.backgroundColor = [UIColor redColor]; UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem]; [btn setTitle:@"点击我" forState:UIControlStateNormal]; [btn setTitle:@"背景颜色被修改" forState:UIControlStateHighlighted]; btn.frame = CGRectMake(20,100, self.view.frame.size.width-40, 50); btn.backgroundColor = [UIColor yellowColor]; [btn addTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside]; btn.tag = 100; [self.view addSubview:btn]; UIButton *btn1 = [UIButton buttonWithType:UIButtonTypeSystem]; [btn1 setTitle:@"点击我" forState:UIControlStateNormal]; [btn1 setTitle:@"背景颜色被修改" forState:UIControlStateHighlighted]; btn1.frame = CGRectMake(20,200, self.view.frame.size.width-40, 50); btn1.backgroundColor = [UIColor yellowColor]; [btn1 addTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside]; btn1.tag = 101; [self.view addSubview:btn1]; } - (void)btnClicked:(UIButton *)btn { if (btn.tag==100) { self.view.backgroundColor = [UIColor purpleColor]; } else if (btn.tag==101) { self.view.backgroundColor = [UIColor blueColor]; } } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end

 

转载于:https://www.cnblogs.com/0515offer/p/4638423.html