在AppState更改时将DateTime值存储在AsyncStorage中

import { AppState, AsyncStorage } from 'react-native';

let lastAppStateChangeTime = null;

AppState.addEventListener('change', (newAppState) => {
  if (newAppState === 'active') {
    const currentTime = new Date().toISOString();
    AsyncStorage.setItem('lastAppStateChangeTime', currentTime)
      .then(() => {
        lastAppStateChangeTime = currentTime;
        console.log('DateTime value stored in AsyncStorage:', lastAppStateChangeTime);
      })
      .catch((error) => {
        console.log('Error storing DateTime value in AsyncStorage:', error);
      });
  }
});

AsyncStorage.getItem('lastAppStateChangeTime')
  .then((value) => {
    if (value) {
      lastAppStateChangeTime = value;
      console.log('Retrieved DateTime value from AsyncStorage:', lastAppStateChangeTime);
    }
  })
  .catch((error) => {
    console.log('Error retrieving DateTime value from AsyncStorage:', error);
  });