程式碼：

AsyncStorage封裝

import {AsyncStorage} from "react-native";

class DeviceStorage {
    //儲存資料
   static saveData(keyName,keyValue) {
       var p = new Promise(function(resolve, reject){
           //做一些非同步操作
           AsyncStorage.setItem(keyName, keyValue, function (error) {
               if (error) {
                   return resolve('儲存失敗');

               } else {
                   return  resolve('儲存成功');
               }
           })

       });
       return p;


    }

    static loadData(keyName) {
        var p = new Promise(function(resolve, reject){
            //做一些非同步操作
            AsyncStorage.getItem(keyName, function (error, result) {
                if (!error) {
                    return resolve(result);
                }else{
                    return resolve( '資料已經刪除')
                }
            })

        });
        return p;


    }

    //刪除指定的資料
    static  delData(keyName) {
       var p = new Promise(function (resolve,reject) {
           AsyncStorage.removeItem(keyName, function (error) {
               if (!error) {
                   return resolve( '資料已經刪除') ;
               }else{
                   return resolve('資料刪除失敗' );
               }
           })
       })
        return p;


    }
}

export default DeviceStorage;

使用：

//儲存  
DeviceStorage.saveData("name","lpp").then(function(data){
           alert(data)

        });
//獲取
   DeviceStorage.loadData("name").then(function(data){
            alert(data)

        });
//刪除
DeviceStorage.delData("name").then(function(data){
            alert(data)

        });