创build第一个启动视图控制器

我试图创build一个“初始设置页面”，显示如果该应用程序是第一次在设备上启动。

我是这样做的：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; if ([[NSUserDefaults standardUserDefaults] boolForKey:@"HasLaunchedOnce"]) { NSLog(@"not first launch"); self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil]; self.window.rootViewController = self.viewController; [self.window makeKeyAndVisible]; return YES; } else { [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"HasLaunchedOnce"]; [[NSUserDefaults standardUserDefaults] synchronize]; NSLog(@"first launch"); } } 

现在我想创build一个视图控制器，并推送到这个视图控制器，如果这是第一次的应用程序启动。

我需要做什么？

Answer 1

创build一个新的ViewController。 在appDelegate.h文件中导入头文件也要创build一个名称为initialViewController类的实例variables。

改变你的其他条件，如：

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; if ([[NSUserDefaults standardUserDefaults] boolForKey:@"HasLaunchedOnce"]) { NSLog(@"not first launch"); self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil]; self.window.rootViewController = self.viewController; } else { [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"HasLaunchedOnce"]; [[NSUserDefaults standardUserDefaults] synchronize]; self.initialViewController = [[InitialViewController alloc] initWithNibName:@"InitialViewController" bundle:nil]; self.window.rootViewController = self.InitialViewController; NSLog(@"first launch"); } [self.window makeKeyAndVisible]; return YES; }