iOS开发——纯代码界面（UITabBarController，UINavigationController，UIImageView）

本是古典何须时尚 2022-07-30 13:13 178阅读 0赞

一、创建UITabBarController和UINavigationController（标签栏控制器和导航控制器）

创建两个类，FirstViewController和SecondViewController。修改AppDelegate.m中的代码。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
        self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    
        //创建tabBarController控制器
        UITabBarController *tabBarController = [[UITabBarController alloc] init];
    
        //初始化firstView控制器
        FirstViewController *firstView = [[FirstViewController alloc] init];
    
        //初始化secondView控制器
        SecondViewController *secondView = [[SecondViewController alloc]init];
    
        //创建导航控制器nav1，显示firstView
        UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:firstView];
    
        //创建导航控制器nav2，显示secondView
        UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:secondView];
    
        //给TabBarController控制器添加子控制器nav1
        [tabBarController addChildViewController:nav1];
    
        //给TabBarController控制器添加子控制器nav2
        [tabBarController addChildViewController:nav2];
    
        //根控制器设置为TabBarController
        self.window.rootViewController = tabBarController;
        [self.window makeKeyAndVisible];
        return YES;
    }

FirstViewController.m中

- (void)viewDidLoad {
        [super viewDidLoad];
    
        //设置背景颜色为黄色
        self.view.backgroundColor = [UIColor yellowColor];
    
    }

SecondViewController.m中

- (void)viewDidLoad {
        [super viewDidLoad];
    
        //设置背景颜色为蓝色
        self.view.backgroundColor = [UIColor blueColor];
    }

运行代码，效果图如下  
![这里写图片描述][20160417193622664]  
![这里写图片描述][20160417193639521]

二、创建UIImageView  
我在FirstViewController.m中创建一个UIImageView

- (void)viewDidLoad {
        [super viewDidLoad];
    
        //设置背景颜色为黄色
        self.view.backgroundColor = [UIColor yellowColor];
        UIImage *image = [UIImage imageNamed:@"Totoro副本"];
    
        //初始化imageView把image设置为它的图片
        UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
    
        //设置imageView的frame
        imageView.frame = CGRectMake(50, 150, 280, 200);
    
        //把imageView添加到View上
        [self.view addSubview:imageView];
    }

运行代码，效果如下  
![这里写图片描述][20160417194733819]

[20160417193622664]: /images/20220724/dee99bff664c44d68c55c0976f518c0d.png
[20160417193639521]: /images/20220724/578b31d5164d40c0ad20934c3448132b.png
[20160417194733819]: /images/20220724/ab365172fbaa47ddb2a533835bb7c45f.png