AsyncStorage

https://github.com/react-native-community/async-storage

也可以參考原本的教學 https://react-native-community.github.io/async-storage/

Importing the AsyncStorage library:

import { AsyncStorage } from 'react-native';
Persisting data:

_storeData = async () => {
  try {
    await AsyncStorage.setItem(
      '@MySuperStore:key',
      'I like to save it.'
    );
  } catch (error) {
    // Error saving data
  }
};
Fetching data:

_retrieveData = async () => {
  try {
    const value = await AsyncStorage.getItem('TASKS');
    if (value !== null) {
      // We have data!!
      console.log(value);
    }
  } catch (error) {
    // Error retrieving data
  }
};

也可以存入 JSON 喔

JSON.stringify(value)
JSON.parse(jsonValue)

是不是很方便呢？

那如果在測試的時候存了太多垃圾怎麼辦？

clearAll = async () => {
  try {
    await AsyncStorage.clear()
  } catch(e) {
    // clear error
  }

  console.log('Done.')
}

現在可以吧前幾篇取的NODE爬蟲的資料存下來啦ＸＤ

nodejs.channel.addListener(
  "GetMyDocsNew",
  (msg) => {
    alert("From node GetMyDocsNew : " + JSON.stringify(msg))
    this.StoringData('@GetMyDocsNew', JSON.stringify(msg));
  },
  this
);