Question

我的 AppDelegate.m 中的viewDidFinishLaunchingWithOptions:方法中包含此代码，结果只是我的 HTTP GET请求响应，而我的手动设置UITabBarViewController （使用指针）作为初始视图控制器。

我想要做的就是在用户未登录的情况下，让我的LoginHomeViewController在启动时成为rootViewController。我需要做些什么来实现这一目标？我是否需要将TabBar的状态重新设置为rootViewController？

if([result isEqualToString: @"log"])
{
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController *ivcTabBar = [storyboard instantiateViewControllerWithIdentifier:@"TabBarControl"];
    [(UITabBarController*)self.window.rootViewController presentViewController:ivcTabBar animated:NO completion:nil];

    NSLog(@"It's hitting log");
}

else if([result isEqualToString: @"notlog"])
{
    [(UITabBarController*)self.window resignFirstResponder];

    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController *ivcLoginHome = [storyboard instantiateViewControllerWithIdentifier:@"LoginHomeStart"];
    [(UINavigationController*)self.window.rootViewController presentViewController:ivcLoginHome animated:NO completion:nil];

    NSLog(@"It's hitting notlog.");
}

bug：目前它正在登录我，即使它遇到notlog，并在调试器中给出错误说：警告：尝试在UITabBarController上显示UINavigationController，其视图不在窗口层次结构！

编辑： * 更改了“notlog”代码 *

else if([result isEqualToString: @"notlog"])
{
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UITabBarController *ivcTabBar = [storyboard instantiateViewControllerWithIdentifier:@"TabBarControl"];
    UIViewController *vcLoginHome = [storyboard instantiateViewControllerWithIdentifier:@"LoginHome"];

    [ivcTabBar presentViewController:vcLoginHome animated:NO completion:nil];

    NSLog(@"It's hitting notlog.");
}

Answer 1

在tabBarController上显示loginViewController

if([result isEqualToString: @"notlog"])
{
    [tabBarCOntroller presentViewController:@"Your Login View Controller" animated:YES completion:nil];
}

并在登录后从内部退出loginViewController

在AppDelegate中使用条件登录

1 个答案: