iphone - DidFinishLoading View 更改

Question

我在应用程序中有一个登录屏幕 View 和 5 个选项卡。我希望当我完成登录屏幕时，它应该移动到选项卡 View (5)。为此，一旦登录任务完成，我必须删除 View 并添加选项卡的另一个 View Controller ......如何做到这一点......

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:self.viewController];


self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
return YES;
}

像这样我移动到登录 View ...现在如何在完成登录后删除并移动到 tab1,tab2,tab3,tab4,tab5

Answer 1

您可以在 AppDelegate 中创建以下方法以在 2 个导航 Controller 之间切换。

+ (AppDelegate *)sharedDelegate
{
    return (AppDelegate *)[[UIApplication sharedApplication] delegate];
}

+ (void)showLogin {
    AppDelegate *selfInstance = [self sharedDelegate];

    self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
    UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:self.viewController];
    selfInstance.window.rootViewController = nav;

}

+ (void)showTabs {
    AppDelegate *selfInstance = [self sharedDelegate];

    self.viewController2 = [[ViewController2 alloc] initWithNibName:@"ViewController2" bundle:nil];
    UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:self.viewController2];
    selfInstance.window.rootViewController = nav;
}

您的 didFinishLaunchingWithOptions 方法应该如下所示:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];

    if( isLoggedIn ){
        [AppDelegate showLogin];
    } else {
        [AppDelegate showTabs];
    }

    return YES;
}

然后在您应用的任何位置，您都可以:

[AppDelegate showTabs];

如果您在实现方面需要帮助，请告诉我。