跳过ViewController

Question

如果用户打开应用程序，然后在最后tabbar项目上选项卡，则会将他带到login viewcontroller，以下是有效的。用户注册或输入他的凭据，然后他就能看到他的profile view controller。 TabBar[4]表示TabBar

中的最后一项

TabBar [4]  -> Nav Controller ->Login -> User Profile

但是，如果用户已经注册或登录，我怎么能直接打开用户Profile ViewController，换句话说，我怎么能跳过Login viewcontoller？

TabBar [4]  -> Nav Controller -> User Profile

Answer 1

您也应该跳过初始化Nav Controller 当用户登录时，User Profile应该直接是TabBar的成员。 考虑一些代码，如：

UITabBarController *tabBar = [[UITabBarController alloc] init];

// FirstViewController
First *firstVC = [[First alloc]init];
firstVC.title = @"First";
firstVC.tabBarItem.image = [UIImage imageNamed:@"1.png"];

//SecondViewController
Second *secondVC = [[Second alloc] init];
secondVC.title = @"Second";
secondVC.tabBarItem.image = [UIImage imageNamed:@"2.png"];

//ThirdViewController
Third *thirdVC = [[Third alloc] init];
thirdVC.title = @"Third";
thirdVC.tabBarItem.image = [UIImage imageNamed:@"3.png"];

//The User Profile Screen
UserProfileVC *userProfile = [[UserProfileVC alloc] init];
userProfile.title = @"User Profile";
userProfile.tabBarItem.image = [UIImage imageNamed:@"4.png"];

tabBar.viewControllers = @[firstVC, secondVC, thirdVC, userProfile];