Question

The current project runs under cocos2d v2.

I have a simple UITextField added to a CCLayer.

Whenever, the user touch the textField, a keyboard appears.

Then when the user touch the “return” button, the keyboard disappear and clears the input.

What I tried to do is to make the same thing when the user touches anywhere outside the UITextField.

I did find a method and it works :

- (void)ccTouchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
{
    UITouch* touch = [touches anyObject];
    if(touch.view.tag != kTAGTextField){
        [[[[CCDirector sharedDirector] view] viewWithTag:kTAGTextField] resignFirstResponder];
    }
}

However, this method doesn’t call the function :

- (BOOL)textFieldShouldReturn:(UITextField *)textField

I use this function to do some calculation and clear the input. Therefore, I would like ccTouchesBegan to enter this textFieldShouldReturn when the textfield is “resignFirstResponder”.

Answer 1

From the Apple docs:

textFieldShouldReturn:
Asks the delegate if the text field should process the pressing of the return button.

So it is only called when the user taps the return button.

I would rather create a method for the calculation and input clearing, and call that method whenever you want it to be called. Example:

- (void)calculateAndClearInput {
    // Do some calculations and clear the input.
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    // Call your calculation and clearing method.
    [self calculateAndClearInput];
    return YES;
}

- (void)ccTouchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
    UITouch* touch = [touches anyObject];
    if (touch.view.tag != kTAGTextField) {
        [[[[CCDirector sharedDirector] view] viewWithTag:kTAGTextField] resignFirstResponder];
        // Call it here as well.
        [self calculateAndClearInput];
    }
}