ios - 以编程方式在 appdelegate 中创建 tabBarController

Question

我一直在关注许多关于如何以编程方式添加 UITabBarController 的不同教程。使用 Storyboard 很容易实现这一点，但由于我正在尝试学习如何以编程方式做事，所以我无法做到这一点。

目前我在 didFinishLaunchingWithOptions 中得到了这段代码。

tabBarController = [[UITabBarController alloc] init];

NSMutableArray *tabs = [[NSMutableArray alloc] init];

UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:[[MenuViewController alloc] init]];

[tabBarController setViewControllers:tabs];

[tabs addObject:navController];


[self.window addSubview:tabBarController.view];

编辑后的代码:

tabBarController = [[UITabBarController alloc] init];

MenuViewController *firstTab = [[MenuViewController alloc] initWithNibName:@"MenuViewController" bundle:nil];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:firstTab];

self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = @[navController];
[self.window setRootViewController:tabBarController];
[self.window makeKeyAndVisible];

这对名为 MenuViewController 的 rootViewController 没有任何作用。我怎样才能做到这一点？

Answer 1

5 选项卡 UITabbarcontroller 的波纹管代码尝试使用以下波纹管代码:-

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

anasayfaViewController * firstTab= [[anasayfaViewController alloc] initWithNibName:@"anasayfaViewController" bundle:nil];
UINavigationController *navigationController1 = [[UINavigationController alloc] initWithRootViewController:firstTab];

SehirRehberiViewController *sehirRehberi = [[SehirRehberiViewController alloc] initWithNibName:@"SehirRehberiViewController" bundle:nil];
UINavigationController *navigationController2 = [[UINavigationController alloc] initWithRootViewController:sehirRehberi];

duyuruViewController *duyuru = [[duyuruViewController alloc] initWithNibName:@"duyuruViewController" bundle:nil]; 
UINavigationController *navigationController3 = [[UINavigationController alloc] initWithRootViewController:duyuru];

sikayetViewController *sikayet = [[sikayetViewController alloc] initWithNibName:@"sikayetViewController" bundle:nil];
UINavigationController *navigationController4 = [[UINavigationController alloc] initWithRootViewController:sikayet];

digerViewController *diger = [[digerViewController alloc] initWithNibName:@"digerViewController" bundle:nil];
UINavigationController *navigationController5 = [[UINavigationController alloc] initWithRootViewController:diger];


self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = @[navigationController1,navigationController2,navigationController3,navigationController4,navigationController5];

 [self.window setRootViewController:tabBarController];
 [self.window makeKeyAndVisible];