我在控制台中收到以下错误:

Applications are expected to have a root view controller at the end of application launch

下面是我的 application:didFinishLaunchWithOptions 方法:

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

    // Set Background Color/Pattern
    self.window.backgroundColor = [UIColor blackColor];
    self.tabBarController.tabBar.backgroundColor = [UIColor clearColor];
    //self.window.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"testbg.png"]];

    // Set StatusBar Color
    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackTranslucent];

    // Add the tab bar controller's current view as a subview of the window
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;
}

在 Interface Builder 中，UITabBarController 的委托(delegate)与 App Delegate Hook 。

有人知道如何解决这个问题吗？

最佳答案

在 AppDelegate 中替换

 [window addSubview:[someController view]];

到

  [self.window setRootViewController:someController];

关于ios - 应用程序在应用程序启动结束时应该有一个 Root View Controller ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/7520971/