IOS - How to program the navigation between Viewcontroller direct in viewDidLoad?

Question

I want to navigate between the Viewcontroller of an app by clicking a button and switching from one to the other for example. I wanted to run this directly in the viewDidLoad of Viewcontroller1, if the user has already registered, I send it to secondView.

It would be something like that:

Viewcontroller1

-(void)viewDidLoad{
    if(_cadastrado isEqualToString:@"1"){
        UIViewController *viewController = [self.storyboard instantiateViewControllerWithIdentifier:@"segundaView"];
        [self presentViewController:viewController animated:YES completion:nil];
    }
}

The method when running out of viewDidLoad works perfectly, however, when I try to run it inside viewDidLoad I cannot.

Answer 1

Hello, in this case it will be necessary to carry out this process in Appdelegate

Example This:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.

    // EM - Implementação da verificação do cadastro da função do Device
    NSIndexPath * indexPath;

    [PlistManager deletePlist:@"ServerControllerPWD" location:@"doc"];

    Password * passConference = [[PWDataController sharedInstance].PWData objectAtIndex:indexPath.row];

    if ([passConference.functionVC isEqualToString:@"Servidor"]) {

        ServerViewController *appStartViewController = [[ServerViewController alloc] init];
        UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:appStartViewController];
        [navController setModalPresentationStyle:UIModalPresentationFullScreen];

        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

        UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"Server"];
        self.window.rootViewController = vc;

        [self.window makeKeyAndVisible];

    } else {

     nil ;

return YES;

}

This example is taking the data of an object that has the data stored in a Plist.

Make this comparison if there is data or not, if there is data it opens the registration screen, if there is data it opens the related view.

In your case this "_register" refers to what ?

Answer 2

With the tip from @Jeffersonassis, I managed to include the code mentioned in the question within the method viewDidAppear.

was thus:

-(void) viewDidAppear:(BOOL)animated{
    if(_cadastrado isEqualToString:@"1"){
        UIViewController *viewController = [self.storyboard instantiateViewControllerWithIdentifier:@"segundaView"];
        [self presentViewController:viewController animated:YES completion:nil];
    }
}

Thus, it executes soon after it has run the whole viewDidLoad.