CODEWITHSUNDEEP
iosuitextfield
AirXygène
AirXygène

Reputation: 2921

Callback after text field has been cleared

I'd like to execute code after the clear button of an UITextField has been tapped and after the text field has been cleared.

textFieldShouldReturn: is called before the text field is cleared.

textField:shouldChangeCharactersInRange:replacementString: is not called at all when the clear button is tapped

The ultimate goal is that I am maintaining some graphical representation of the string being tapped in when it is tapped. I used textField:shouldChangeCharactersInRange:replacementString: for that, and it works well, except when the clear button is tapped. (which should erase the graphical representation).

Upvotes: 2

Views: 393

Answers (1)

Artal
Artal

Reputation: 9143

Here's an idea: you can replace the system clear button with your own button. You'll need to handle clearing the text-field yourself (very simple) and then you can perform your custom animations and what not.

Create a button and set it as the rightView of your UITextField:

UIButton *clearButton = [UIButton buttonWithType:UIButtonTypeSystem];
clearButton.frame = CGRectMake(0, 0, 45, 45);
clearButton.tintColor = myTextField.tintColor;
[clearButton setImage:[UIImage imageNamed:@"MY_CLEAR_IMAGE.png"] forState:UIControlStateNormal];
[clearButton addTarget:self action:@selector(onTextfieldClearButtonTouchUpInside:) forControlEvents:UIControlEventTouchUpInside];

myTextField.rightView = clearButton;
myTextField.rightViewMode = UITextFieldViewModeWhileEditing;

Handle the action:

-(void)onTextfieldClearButtonTouchUpInside:(UIButton*)clearButton
{
    if([clearButton.superview isKindOfClass:[UITextField class]])
    {
        ((UITextField*)(clearButton.superview)).text = @"";
        //TODO: YOUR MAGIC GOES HERE
    }
}

Upvotes: 2

Related Questions