UITextFieldTextDidChangeNotification iOS7 not fired

Question

I'm using this piece of code to get informed about changing text of a UITextField.

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textUpdated) name: UITextFieldTextDidChangeNotification object:self.inputValueField.text];

Works fine with iOS6 but is not getting called with iOS7. Any ideas?

Answer 1

Instead of NSNotifications, you can use UITextField's delegate to be notified about changing text.

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

From the documentation:

Asks the delegate if the specified text should be changed.

Discussion

The text field calls this method whenever the user types a new character in the text field or deletes an existing character.