当类组件的react native 5x中的屏幕发生变化时，如何聚焦？

import { Dimensions } from 'react-native';

const [screenDimensions, setScreenDimensions] = useState(Dimensions.get('window'));

const handleScreenChange = () => {
  setScreenDimensions(Dimensions.get('window'));
  // 在这里执行聚焦操作
};

useEffect(() => {
  Dimensions.addEventListener('change', handleScreenChange);
  return () => {
    Dimensions.removeEventListener('change', handleScreenChange);
  };
}, []);

useEffect(() => {
  // 根据screenDimensions的变化执行聚焦操作
}, [screenDimensions]);