efunbox-mobile-8/pages/utils/asyncStorage.js

import { AsyncStorage } from "react-native";
export default class DeviceStorage {
  static get(key) {
    return AsyncStorage.getItem(key).then(value => {
      const jsonValue = JSON.parse(value);
      return jsonValue;
    });
  }
  static save(key, value) {
    return AsyncStorage.setItem(key, JSON.stringify(value));
  }
  static update(key, value) {
    return DeviceStorage.get(key).then(item => {
      value =
        typeof value === "string" ? value : Object.assign({}, item, value);
      return AsyncStorage.setItem(key, JSON.stringify(value));
    });
  }
  static delete(key) {
    return AsyncStorage.removeItem(key);
  }
}

/**
    使用方法:
    1.先引用asyncStorage.js文件
    2.调用方法
    


    //获取
     asyncStorage.get("birthday").then(birthday => {
          if (birthday == null || birthday == "") {
            consle.log("birthday is null");
          } else {
            alert("birthday:" + birthday);
          }
        });


    //存储
      asyncStorage.save("birthday", this.state.birthday_time);


    //更新
    asyncStorage.update("birthday","this.state.birthday_time");

    //删除
    asyncStorage.delete("birthday");

 */