asyncstorage.js

 try {
    await AsyncStorage.setItem('@token', result.data.token);
    const jsonValue = JSON.stringify(result.data);
    await AsyncStorage.setItem('@user_Object', jsonValue);
  } catch (e) {
    console.log(e);
  }

try {
  const value = await AsyncStorage.getItem('@user_Object');
  if (value !== null) {
     const userObjectParsed = JSON.parse(value);
  }
} catch (e) {
  // error reading value
}