How to use AsyncStorage to store array in React Native - react-native

Question

I am trying to use AsyncStorage to store simple Profile using React Native.
Here is What I have so far for adding Profile, I tried console.log(contact), but showed nothing.
function AddContact(props) {
const [FName,setFName] = useState('');
const [LName,setLName] = useState('');
const [PNumber,setPNumber] = useState('');
var contact = {
firstname : FName,
lastname : LName,
phonenumber : PNumber
};
const storeContact = async() => {
try {
await AsyncStorage.setItem(
'#MySuperStore:key', JSON.stringify(contact));
} catch (error) {
// Error saving data
}}
For Loading Profile
const loadContact = async () => {
try {
const value = await AsyncStorage.getItem('#MySuperStore:key', JSON.stringify(contact));
if (value !== null) {
// We have data!!
console.log(value);
}
} catch (error) {
// Error retrieving data
}
};
Please help.

Answer 1

In order to load the data from the Async Storage, your loadContact method should be:
For Loading Profile
const loadContact = async () => {
try {
const value = await AsyncStorage.getItem('#MySuperStore:key');
const json = JSON.parse(value); // this is how you get back the array stored
if (json !== null) {
// We have data!!
console.log(value);
}
} catch (error) {
// Error retrieving data
}
};

Answer 2

AsyncStorage.getItem() only accept one argument that is key. So you have to pass only argument "key" and it will return your data as string:
const value = await AsyncStorage.getItem('#MySuperStore:key');
Or if you want to use this value as array to display something you have to convert it into json.
const loadContact = async () => {
try {
const value = await AsyncStorage.getItem('#MySuperStore:key');
if (value !== null) {
// We have data!!
console.log(value);
this.setState({
data: JSON.parse(value);
});
}
} catch (error) {
// Error retrieving data
}
};