Knowing the complete changed string in textField:shouldChangeCharactersInRange:replacementString:

Question

I just asked a question about how to monitor changes to a UITextField and received this response :

- (BOOL)textField:(UITextField *)textField should         


        

Answer 1

Swift Version

In Swift We need to cast textField's text to NSString. The following can be useful:

let newString = (textField.text! as NSString).replacingCharacters(in: range, with: string)

Answer 2

-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    NSString * searchStr = [textField.text stringByReplacingCharactersInRange:range withString:string];

//    [textField2 setText:[textField1.text stringByReplacingCharactersInRange:range withString:string]];
    NSLog(@"%@",searchStr);
    return YES;
}

Answer 3

NSString * proposedNewString = [[textField text] stringByReplacingCharactersInRange:range withString:replacementString];