Get the text from textfield when click on backspace button Ios

Question

I need to get the text from textfield when I click over the backspace.

For Example :

I have a phone textfield . When I click on each key, there is a search happens and it works fine using " shouldChangeCharactersInRange " delegate. Once I delete any character from any where in the textfield I need to get the rest of textfield text and need to search. How can I achieve this?

Answer 1

Register for the below notification, then you will get notified for any text change. Then in the textFieldDidChange: method you can examine the contents of the textField

[textField addTarget:self 
                  action:@selector(textFieldDidChange:) 
        forControlEvents:UIControlEventEditingChanged];

- (void)textFieldDidChange:(id)sender
{
    // Handle change.
    UITextField* txt = (UITextField*)sender;
    NSLog(@"txt = %@",txt.text);

   //Write code to search from array or anything else.

}

Answer 2

要使用shouldChangeCharactersInRange委托方法从UITextField获取搜索文本，可以使用：

 NSString *searchText = [textField.text stringByReplacingCharactersInRange:range withString:string];