ios - 如何使用objective c在iOS中设置起始viewcontroller.xib

Question

我是 iOS 新手。我创建了一个单 View 应用程序。它有一个 View Controller 。编译应用程序时，它会显示我的 View Controller 的全黑颜色。现在我需要的是如何将我的 View Controller 初始化为第一个 View Controller 以及我需要初始化我的应用程序的导航 Controller 。注意:我创建了 xib View Controller 。

Answer 1

在 AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen] bounds]];
HomeViewController *homeVc = [[HomeViewController alloc]initWithNibName:@"HomeViewController" bundle:nil];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:homeVc];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
return YES;
}