useEffect 无法在 react native 中运行

Question

I am using redux in react native, When the state of redux changes, useEffect is not executed， here is my code

const message = useSelector(state => {
    const { privateChat } = state
    const chatObj = privateChat.filter(s => s.user === replyer) // chatObj is an object
    console.log('changed')
    return chatObj[0]
  })
  useEffect(() => {
    console.log('message1', message)
   
  }, [message])

every time the 'changed' was printed, useEffect did not print out the data，I dont konw what went wrong

Answer 1

This might help

const privateChat = useSelector(state => state.privateChat);

const chatObj = privateChat.filter(s => s.user === replyer) // chatObj is an object
console.log('changed');

useEffect(() => { 
   console.log('message1', chatObj) 
}, [privateChat]);