1.注掉info.plist中的下面部分
<!-- <key>UILaunchStoryboardName</key>-->
<!-- <string>LaunchScreen</string>-->
<!-- <key>UIMainStoryboardFile</key>-->
<!-- <string>Main</string>-->
2.添加如下代码
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
UIViewController *rootVC = [[UIViewController alloc] init];
rootVC.view.backgroundColor = [UIColor blueColor];
self.window.rootViewController = rootVC;
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
//以下为自定义代码,上面的六行代码为适配代码
NSArray *views = [[NSBundle mainBundle] loadNibNamed:@"View" owner:self options:nil];
[self.window addSubview:[views lastObject]];