UITextField and Keyboard Notifications - strange order - ios

Question

So I've set up a notification for the keyboard appearance event. Now let us consider a UITextView and a UITextField.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
The selector is:
- (void)keyboardWillShow:(NSNotification *)notification {
keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
}
In case of a UITextView, the delegate method - (void)textViewDidBeginEditing:(UITextView *)textView is fired AFTER the keyboardWillShow: method. So keyboardSize has the keyboard's actual size and I'm able to use that inside the textview delegate method.
However in case of a UITextField, the corresponding delegate method - (void)textFieldDidBeginEditing:(UITextField *)textField is fired BEFORE the keyboardWillShow: method.
Why is this so? How do I get the keyboard's CGSize in the textfield's case as now it just returns zero because the textfield delegate is called first and not the keyboard selector.

Answer 1

I've had this same problem. Try using:
- (BOOL)textViewShouldBeginEditing:(UITextView *)textView

Answer 2

Weird… Sounds like a mistake on Apple's end.
Maybe you could delay the keyboard popping up? Here's my unfortunately very messy "work around" suggestion -- You could send a notification when the text field is selected, but then only actually begin editing a fraction of a second later so that the text field is in fact known before keyboardWillShow: is called. For example:
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
// Notification corresponding to "textFieldSelected:" method
[[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_TEXT_FIELD_SELECTED object:nil userInfo:[[NSDictionary alloc] initWithObjectsAndKeys:textField, #"textField", nil]];
// "textFieldReallyShouldBeginEditing" is initially set as FALSE elsewhere in the code before the text field is manually selected
if (textFieldReallyShouldBeginEditing)
return YES;
else
return NO:
}
- (void)textFieldSelected:(NSNotification*)notification {
// Done in a separate method so there's a guaranteed delay and "textFieldReallyShouldBeginEditing" isn't set to YES before "textFieldShouldBeginEditing:" returns its boolean.
[self performSelector:#selector(startTextFieldReallyEditing:) withObject:(UITextField*)notification[#"textField"] afterDelay:.01];
}
- (void)startTextFieldReallyEditing:(UITextField*)textField {
textFieldReallyShouldBeginEditing = YES;
// To trigger the keyboard
[textField becomeFirstResponder];
}
Then depending on how you're creating the notification, you can insert the value of this now known text field even before it begins editing.