React Native I can not store an array with AsyncStorage

Question

I am newbie in React Native and I am trying to store and get an array with AsyncStorage in ReactNative.

I have two problems.

First, I do not know why but when I storage data, it only works the second time but I am calling first the set of useState.

const handleAddTask = () => {
    Keyboard.dismiss();
    setTaskItems([...taskItems, task]);
    storeData(taskItems);
  };

Second, how can I call the getData function to get all the data and show it? Are there something like .onInit, .onInitialize... in ReactNative? Here is my full code

const [task, setTask] = useState();
const [taskItems, setTaskItems] = useState([]);

  const handleAddTask = () => {
    Keyboard.dismiss();
    setTaskItems([...taskItems, task]);
    storeData(taskItems);
  };

  const completeTask = (index) => {
    var itemsCopy = [...taskItems];
    itemsCopy.splice(index, 1);
    setTaskItems(itemsCopy);
    storeData(taskItems);
  }

  const storeData = async (value) => {
    try {
      await AsyncStorage.setItem('@tasks', JSON.stringify(value))
      console.log('store', JSON.stringify(taskItems));
    } catch (e) {
      console.log('error');
    }
  }

  const getData = async () => {
    try {
      const value = await AsyncStorage.getItem('@tasks')
      if(value !== null) {
        console.log('get', JSON.parse(value));
      } 
    } catch(e) {
      console.log('error get');
    }
  }

Answer 1

Even if you're update state setTaskItems([...taskItems, task]) before save new data in local storage, storeData(taskItems) executed before state updated and save old state data.

Refactor handleAddTask as below.

  const handleAddTask = () => {
   Keyboard.dismiss();

const newTaskItems = [...taskItems, task]
    setTaskItems(newTaskItems);
    storeData(newTaskItems);
  };