代码：
AsyncStorage封装
import {AsyncStorage} from "react-native";
class DeviceStorage {
//保存数据
static saveData(keyName,keyValue) {
var p = new Promise(function(resolve, reject){
//做一些异步操作
AsyncStorage.setItem(keyName, keyValue, function (error) {
if (error) {
return resolve('存储失败');
} else {
return resolve('存储成功');
}
})
});
return p;
}
static loadData(keyName) {
var p = new Promise(function(resolve, reject){
//做一些异步操作
AsyncStorage.getItem(keyName, function (error, result) {
if (!error) {
return resolve(result);
}else{
return resolve( '数据已经删除')
}
})
});
return p;
}
//删除指定的数据
static delData(keyName) {
var p = new Promise(function (resolve,reject) {
AsyncStorage.removeItem(keyName, function (error) {
if (!error) {
return resolve( '数据已经删除') ;
}else{
return resolve('数据删除失败' );
}
})
})
return p;
}
}
export default DeviceStorage;
使用：
//保存
DeviceStorage.saveData("name","lpp").then(function(data){
alert(data) });
//获取
DeviceStorage.loadData("name").then(function(data){
alert(data) });
//删除
DeviceStorage.delData("name").then(function(data){
alert(data) });