ios - libMobileGestalt MobileGestalt.c :890: MGIsDeviceOneOfType is not supported on this platform

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我使用的是 Xcode 9，当我加载应用程序时，我不断收到此错误

libMobileGestalt MobileGestalt.c:890: MGIsDeviceOneOfType is not supported on this platform.

如何阻止它？

Answer 1

我正在通过一本旧书学习使用 ObjC 进行 iOS 开发(出于个人原因)，当我从 AppDelegate.m 重写 didFinishLaunchingWithOptions 时，发生了这个错误，所以我通过设置全局导航 Controller 来解决，如下所示:

 -(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // Override point for customization after application launch.

    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

    RootController *rootController = [[RootController alloc] init];

    UINavigationController  *navController = [[UINavigationController alloc]initWithRootViewController:rootController];

    self.window.rootViewController = navController;

    [self.window makeKeyAndVisible];

    [rootController release];

    [navController release];

    return YES;
}

Xcode 10.0 (10A255)

适用于 iPhone 和模拟器(iPhone 7 - iOS 12)