TextFieldDelegates not getting called

[ghost]

As I want to limit the text entering to a certain length, I was implementing the -(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string method but somehow I observed it is not getting called for this textfield though the delegate is assigned.

The code for limiting the text to 10 digits is follows:

-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
if (textField == textFieldPhone) {
NSString *resultingString = [textField.text stringByReplacingCharactersInRange:range withString:string];
NSInteger length = [resultingString length];
if (length > 10)
return NO;
NSCharacterSet *characterSet = [[NSCharacterSet characterSetWithCharactersInString:ACCEPT_NUMERIC] invertedSet];
NSString *filtered = [[string componentsSeparatedByCharactersInSet:characterSet] componentsJoinedByString:@""];
return [string isEqualToString:filtered];
}
return YES;
}

[matmartinez]

Hi there rupammitra,

The text field won't call the -textField:shouldChangeCharactersInRange: method if you're using a custom -inputView. Instead, you should take a look at MMNumberKeyboardDelegate:

- (BOOL)numberKeyboard:(MMNumberKeyboard *)numberKeyboard shouldInsertText:(NSString *)text;

All you have to do is set the delegate of your number keyboard, like this:

MMNumberKeyboard *keyboard = [[MMNumberKeyboard alloc] initWithFrame:CGRectZero];
keyboard.delegate = self;

Hope this helps,

Matías.

[ghost]

Have used it. But still not worked.

[matmartinez]

What do you mean by not worked? Can you be a little more specific?

There is a chance your implementation is wrong. Here's a example:

- (BOOL)numberKeyboard:(MMNumberKeyboard *)numberKeyboard shouldInsertText:(NSString *)text
{
      const NSInteger maximumLength = 10;

      return (self.yourTextField.length + text.length <= maximumLength);
}

Friendly reminder that this is not StackOverflow. Let me know if this solves your issue.

Matías.

[ghost]

Yes this worked. Thanks Matias.

[matmartinez]

Great!

Matías.