Get value in `setValue`

I’m trying to make a conditional in my setValue like this:

setValue={
   value !== 'custom' ? props.setValue(value) : props.setIsOverlayVisible(true)
}

However, the setValue callback returns a function instead of the value and I can’t do it in onChangeValue because I need it to retain the previous value if “custom” is selected. How do I go about getting the value in setValue ?

[hossein-zare]

You shoudn’t touch the setValue prop.

setValue={props.setValue}

to retain values:

const currentValueRef = useRef(null);

<DropDownPicker
  setValue={props.setValue}
  onChangeValue={(value) => {
    if (value === 'custom') {
      props.setIsOverlayVisible(true);
      setValue(currentValueRef.current);
    } else {
      currentValueRef.current = value;
    }
  }}
  ...
/>

[KrisLau]

Your comment in https://github.com/hossein-zare/react-native-dropdown-picker/issues/256#issuecomment-1072655805 solved my issue thank you!