iphone - UIViewControllerHierarchyInconsistency exception when

Question

I am getting UIViewControllerHierarchyInconsistency exception when assigning,

txtFieldDelegate.view = self.view;  
txtFirstName.delegate = txtFieldDelegate;
txtLastName.delegate = txtFieldDelegate;

I am having text field delegate methods in some other class and creating objects for the text field delegate class to use the same. Please provide suggestions to resolve this..

Answer 1

This view controller was inheriting a class which inherits UIViewController. The inherited class's inheritance is changed as NSObject. Instead of TheClass: UIViewController, it was changed as TheClass:NSObject

Answer 2

尝试这个：

SomeOtherClassViewController *txtFieldDelegateVC = [[SomeOtherClassViewController alloc] init]; 
txtFirstName.delegate = txtFieldDelegateVC;
txtLastName.delegate = txtFieldDelegateVC;