ios - Example for login screen modally based on storyboard

Question

I am learning ios/ xcode and at a roadblock.

I have a tabbarcontroller+navigation based design. I need to present a login screen if user is not logged in. Here is the basic heirarchy. The login page needs a navigationBar (as the tutorial I followed puts a "Go" button on the bar.

LoginController: (LTController.h,.m)

Main View:TabBarController>
                   NavigationController>View1>View1a
                   NavigationController>View2

I read lot of posts here on modal view, delegate method, etc. Most of them are code snippets which unfortunately are a bit over the head for my beginner level.

Would appreciate a simple explanation as to how to achieve this. Espacially a note on which files needs changes would be great.

thanks

Answer 1

Here is scenario . Its so simple . I just hope that it will be useful.

For the UITableBarController give a name for identity to storyboard id

Then in your ViewController class file You have the authentication credentials right >.? Do some stuff over there for authentication . then follow this code . It works fine

- (IBAction)Login:(id)sender {

    if(authenticated)  // authenticated---> BOOL Value assign True only if Login Success
        {
            UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
            UITabBarController *obj=[storyboard instantiateViewControllerWithIdentifier:@"tab"];
            self.navigationController.navigationBarHidden=YES;
            [self.navigationController pushViewController:obj animated:YES];
        }