我有一个使用故事板开发的ios5应用程序,当前在初始启动时显示标签栏控制器视图.我想在显示标签栏控制器之前显示登录屏幕.用户将输入他的用户名&密码,然后系统将对用户进行身份验证,如果成功,则显示标签栏控制器.
我试过以下3个选项但没有运气..任何想法？
(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Option 1
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
PointsViewController *firstVC = [[tabBarController viewControllers] objectAtIndex:0];
UIViewController *loginViewController = [[LoginViewController alloc] init];
[firstVC.navigationController pushViewController:loginViewController animated:YES];
// Option 2
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
UIViewController *loginViewController = [[LoginViewController alloc] init];
[tabBarController presentViewController:loginViewController animated:NO completion:nil];
// Option 3
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
UIViewController *loginViewController = [[LoginViewController alloc] init];
[tabBarController presentModalViewController:loginViewController animated:NO];
return YES;
}
