将 promise 的值存储到一个变量中，以便稍后与 state 一起使用。 （反应原生）

Question

const storage = AsyncStorage.getItem('@location_data').then(data => data)
const App = () => {
    const [locationData, setLocationData] = useState(storage);

Storage currently holds a promise, how could I get storage to become the value of the promise?

AsyncStorage Documentation

Answer 1

Your code (as of writing), is setting storage as a promise, your state will now contain a promise. The way you have the then(data => data) is doing nothing to your data except adding a (redundant) chain to the promise.

You either need to await the promise to finish inside an async function.

const data = await AsyncStorage.getItem('@location_data');
const [locationData, setLocationData] = useState(data);

Or, set the state of the promise within then() :

AsyncStorage.getItem('@location_data').then(data => {
    setLocationData(data)
})