I'm suggesting simply:
- (void)viewDidAppear:(BOOL)animated {
if (masterView.parserURL == nil) {
LoginViewController *login = [[LoginViewController alloc] init];
login.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentViewController:login
animated:YES
completion:nil];
}
}
Note, there's an interesting question of how the login screen is supposed to update that parserURL
field in masterView
. You might add a property to your login controller that is a pointer to masterView
, so that it has a mechanism to update the parserURL
. Thus it might be like:
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if (masterView.parserURL == nil)
{
LoginViewController *login = [[LoginViewController alloc] init];
login.masterView = masterView;
login.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentViewController:login
animated:YES
completion:nil];
}
}
Then your login controller can now update the parserURL via:
self.masterView.parserURL = ... // set it as appropriate