Question

I have tried many ways to achieve it but I it requires conditional segue for accepting the condition to match username and password and load the next view controller .I dont know how to achieve it in story board.
Please let me know any approach.Thanks in advance.

Answer 1

You don’t need to start a segue from a button or a table view cell. You can start a segue from a view controller. This makes the segue available to the whole view controller by calling -performSegueWithIdentifier:sender:. You just need an action that does your test and then performs the segue.

- (IBAction)login:(UIButton *)button
{
    if (!self.user || !self.password) {
            // TODO: Display error
            return;
    }

    [self.model logInWithUser:self.user password:self.password completion:^{
        if (!self.model.authenticated) {
            // TODO: Display error
            return;
        }

        [self performSegueWithIdentifier:@"Show Main View" sender:button];
    }];
}

Or whatever your logic for authentication is.