iOS开发--纯代码布局

纯代码布局,初始化

1.删除Main.storybook

2.删除Targets->Deployment Info->Main Interface->Main

3.在AppDelegate.m文件中添加代码:

• 1.必须导入头文件#import "ViewController.h"

• 2.初始化UIWindow

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.rootViewController = [[ViewController alloc] init];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
}