如何以编程方式在AppDelegate中添加UITabBarController＆UINavigationController？
如何在应用程序委托中以编程方式添加UINavigationController ＆ UITabBarController 。
不要忘记在AppDelegate.h文件中添加：
@property (strong, nonatomic) UITabBarController *tabBarController;
下面是AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. self.tabBarController = [[UITabBarController alloc] init]; ViewController1 *VC1 = [[ViewController1 alloc] init]; VC1.title = @"Tab Title Here"; UINavigationController *VC1Navigation = [[UINavigationController alloc] initWithRootViewController:VC1]; ViewController2 *VC2 = [[ViewController2 alloc] init]; VC2.title = @"Tab Title Here"; UINavigationController *VC2Navigation = [[UINavigationController alloc] initWithRootViewController:VC2]; ViewController3 *VC3 = [[ViewController3 alloc] init]; homeView.title = @"Tab Title Here"; UINavigationController* VC3Navigation = [[UINavigationController alloc] initWithRootViewController:VC3]; NSArray* controllers = [NSArray arrayWithObjects:VC1Navigation, VC2Navigation, VC3Navigation, nil]; self.tabBarController.viewControllers = controllers; self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; self.window.backgroundColor = [UIColor whiteColor]; self.window.rootViewController = self.tabBarController; [self.window makeKeyAndVisible]; return YES; }