reactjs – useEffect Not Correctly Dealing with Concentrate on iOS Units in React Software

I am engaged on a React software the place we use a customized hook (useFlipAnimation) to handle the flipping animation of a card part. When the cardboard flips to its again facet, we wish to routinely concentrate on a textarea component for enter. This performance works as anticipated on Android gadgets and net browsers, however we encounter points on iOS gadgets the place the automated focus doesn’t happen.

Code Overview:

We decide the preliminary facet of the cardboard and use a useEffect hook to handle focus primarily based on the cardboard’s present facet (entrance or again) and whether or not it’s presently flipping (isFlipping). When the cardboard flips to the again (facet === 'again') and isn’t flipping (!isFlipping), we try and concentrate on the textarea by calling handleFocusMessage. Conversely, we name handleFocusOutMessage to take away focus in any other case.

useEffect(() => {
  if (facet === 'again' && !isFlipping) {
    handleFocusMessage(); // Speculated to concentrate on the textarea
  } else {
    handleFocusOutMessage(); // Removes focus
  }
}, [side, isFlipping, handleFocusMessage, handleFocusOutMessage]);

//deal with focus

  const handleFocusMessage = useCallback(() => {
    if (messageInputRef.present) {
      const enter = messageInputRef.present;
      enter.focus();
      if (enter?.worth) {
        const size = enter.worth.size;
        enter.setSelectionRange(size, size);
      }
    }
  }, []);

  const handleFocusOutMessage = useCallback(() => {
    if (messageInputRef.present) {
      const enter = messageInputRef.present;
      enter.blur();
    }
  }, []);

  const messageInputRef = useRef<HTMLTextAreaElement | null>(null);

  <MessageInput
                id={'message-input'}
                data-testid={'message-input'}
                ref={messageInputRef}
                worth={textual content}
                onChange={handleInputChange}
                maxLength={150}
              />


//model

const MessageInput = styled.textarea`
  border: none;
  resize: none;
  width: 100%;
  top: 230px !vital;
  shade: ${({ theme }) => theme.colours.white};
  z-index: 80;
`;

The handleFocusMessage operate is meant to set concentrate on a textarea component inside the card. This setup works flawlessly in Android and desktop net environments however fails on iOS gadgets.

Problem Particulars:

• The autofocus performance is triggered upon the completion of the flip animation.
• This situation solely happens on iOS gadgets; each Android and net environments carry out as anticipated.
• Debugging logs affirm that the respective handleFocusMessage and handleFocusOutMessage features are referred to as on the appropriate instances.

Questions:

1. Are there recognized limitations or safety features in iOS that stop programmatic focus from being set underneath sure circumstances that is perhaps affecting this conduct?
2. Is there a really useful strategy or workaround for making certain constant focus conduct throughout all gadgets, notably for dynamic content material like this the place focus is about following an animation or state change slightly than direct consumer interplay?

Any insights or recommendations on find out how to tackle this situation could be significantly appreciated. Thanks upfront on your assist!

Tried Options:

• Guaranteeing that the main target logic isn’t hindered by asynchronous state updates.
• Instantly setting concentrate on the textarea component utilizing vanilla JavaScript exterior the React lifecycle (this strategy additionally inconsistently works on iOS).
• Contemplating the likelihood that iOS requires a consumer interplay to set off focus, I tried to refactor the interplay mannequin to accommodate this, however because of the nature of the performance (computerized focus post-animation), this resolution isn’t viable.