Dismiss modalView Controller from Navigation Controller on appDelegate window

Assume:

If you want to check the controller if it exists, then remove it from the stack.

There are 2 ways to check the controller.

1) using NSStringFromClass.

2) give tag to your controller.(self.view.tag = INTEGER_VALUE)

First Approach:

NSString *modalClassName = NSStringFromClass([YOUR_CONTROLLER class]);    

if (modalClassName) {

NSLog(@"Remove it From Stack");

[appDelegate.window.rootViewController dismissModalViewControllerAnimated:NO];

}

Second Approach:

if([appDelegate.window viewWithTag:YOUR_INTEGER_VALUE]){

NSLog(@"Remove it From Stack");

[appDelegate.window.rootViewController dismissModalViewControllerAnimated:NO];

}