记录删除storyboard用纯代码布局

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目录变化

首先来看一下 Xcode13 创建项目的目录，比之前的旧版本多了 SceneDelegate.h 和 SceneDelegate.m 两个文件

SceneDelegate

从 Xcode11开始，创建新的iOS项目的模版中会带有 SceneDelegate 类，并且在 plist 文件中会有一个 Application Scene Manifest 配置，AppDelegate.m 中新增了两个管理 SceneDelegate 的函数 ，分别是 application(_:configurationForConnecting:options:) 和 application(_:didDiscardSceneSessions:)。

SceneDelegate.h 和 SceneDelegate.m 两个文件这两个文件一般用于 ipadOS 的分屏功能的。

删除 storyboard

将项目中的故事板删除到垃圾桶

然后将 General 下的 Main Interface 中的 Main 删除掉


接着删除 Info 下的 Application Scene Manifest


删除 SceneDelegate.h 和 SceneDelegate.m 两个文件

将 SceneDelegate.h 和 SceneDelegate.m 这两个文件扔到垃圾桶

然后删除 Appdelegate.m 中的一下代码

#pragma mark - UISceneSession lifecycle


- (UISceneConfiguration *)application:(UIApplication *)application configurationForConnectingSceneSession:(UISceneSession *)connectingSceneSession options:(UISceneConnectionOptions *)options {
    // Called when a new scene session is being created.
    // Use this method to select a configuration to create the new scene with.
    return [[UISceneConfiguration alloc] initWithName:@"Default Configuration" sessionRole:connectingSceneSession.role];
}


- (void)application:(UIApplication *)application didDiscardSceneSessions:(NSSet<UISceneSession *> *)sceneSessions {
    // Called when the user discards a scene session.
    // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
    // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
}

Appdelegate.h 中要添加 window 属性

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow * window;

@end

然后在 Appdelegate.m 中的 didFinishLaunchingWithOptions 函数中添加

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    
    // 创建UIWindow
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    
    // 设置UIWindow的背景颜色
    self.window.backgroundColor = [UIColor grayColor];
    
    ViewController *homeVC = [[ViewController alloc] init];
    UINavigationController *homeNav = [[UINavigationController alloc] initWithRootViewController:homeVC];
    self.window.rootViewController = homeNav;

    
    [self.window makeKeyAndVisible];
    
    return YES;
}

接下来就可以用纯代码进行编写了！