步骤1：
删除info.plist文件下的一条配置，如图
步骤2：
编辑AppDelegate.m，参考以下代码
@interface AppDelegate ()
//@property (strong, nonatomic) UIWindow * window;
@property(nonatomic,strong) UIWindow * win;
@property(nonatomic,strong) MyViewController * mainVC;
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// 创建自己的window
self.win = [[UIWindow alloc]initWithFrame:UIScreen.mainScreen.bounds];
// 创建主controller
self.mainVC = [MyViewController new];
// 创建导航，可选
UINavigationController * nav = [[UINavigationController alloc]initWithRootViewController:_mainVC];
self.win.rootViewController = nav;
[self.win makeKeyAndVisible];
return YES;
}