UITextField keyboard dismiss on button click to UIApplication method - objective-c

Question

I'm going from storyboard to UISplitViewController in a xib. I want to logout of my storyboard view, which will bring me to the UISplitViewController. In the storyboard controller, I have a UITextField. I set it so that it doesn't dismiss itself after I press enter. However, it now stays open even when I switch to the splitviewcontroller, which I obviously don't want because i want to logout.
Logout Button
UIBarButtonItem *logoutButton = [[UIBarButtonItem alloc] initWithTitle:#"Log Out" style:UIBarButtonItemStylePlain target:self action:#selector(confirmLogout)];
Method to bring up UISplitViewCOntroller
- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex
{
if (alertView.tag==TAG_DEV){
if (buttonIndex) {
[[[UIApplication sharedApplication] delegate] performSelector:#selector(gotoSplitViewController)];
} else {
[self.navigationController popViewControllerAnimated:YES];
}}
}
method gotoSplitViewController in the delegate:
-(void)gotoSplitViewController{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
ListViewController *listVC = [[ListViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *listNC = [[UINavigationController alloc] initWithRootViewController:listVC];
AssignedViewController *assignedVC = [[AssignedViewController alloc] initWithNibName:#"AssignedViewController" bundle:nil];
UINavigationController *assignedNC = [[UINavigationController alloc] initWithRootViewController:assignedVC];
//assign the views to the new nav view controllers
splitViewController = [[UISplitViewController alloc] init];
splitViewController.delegate = assignedVC;
splitViewController.viewControllers = #[listNC, assignedNC];
listVC.detailViewController = assignedVC;
[[self window] setRootViewController:splitViewController];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
}
my UITextField
self.textBox = [[UITextField alloc] initWithFrame: CGRectMake(10, 660, 750, 90)];
self.textBox.backgroundColor = [UIColor colorWithRed:(209/255.0) green:(236/255.0) blue:(232/255.0) alpha:1];
self.textBox.returnKeyType = UIReturnKeySend;
self.textBox.delegate = self;
[self.view addSubview:self.textBox];
I've tried the resignFirstResponder if various places, including adding
- (void)viewWillDisappear:(BOOL)animated
{
[self.textBox resignFirstResponder];
}
However, none of them work. How do I get the keyboard to disappear after the views change?

Answer 1

I set
self.chatBox.delegate=nil;
in my methods to switch views