HarmonyOS 鸿蒙Next如何获取系统语言，运营商，网络类型

参考下demo：

export default class connModle {
 isConn: boolean = false;//是否连接网络
 netCapList: Array<connection.NetCap> | undefined = [];//网络状态

 netBearType: connection.NetBearType = -1;//网络类型
 netLinks : connection.LinkAddress = {} as connection.LinkAddress; //链路地址（ip）
 netRotues : connection.RouteInfo = {} as connection.RouteInfo; //路由信息
 netGateway : connection.NetAddress = {} as connection.NetAddress; //网关信息
 netInterfaceName : string = "testName"; //网卡名称
 netProxy : connection.HttpProxy = {} as connection.HttpProxy; //网络代理

 linkUp : number|undefined = 0; //上行带宽
 linkDown : number|undefined = 0; //下行带宽

 radioData: radio.NetworkState = {} as radio.NetworkState;//蜂窝网
 radioNetType: radio.NetworkType = {} as radio.NetworkType;//蜂窝网类型

 //网络是否有网判断
 async isConnTest() {
   //获取当前默认网络
   connection.getDefaultNet().then((netHandle: connection.NetHandle) => {
     //获取对应的网络的能力信息
     connection.getNetCapabilities(netHandle).then((data: connection.NetCapabilities) => {

       console.info("net1 Capabilities : " + JSON.stringify(data));
       //网络带宽
       this.linkUp = data.linkUpBandwidthKbps;
       this.linkDown = data.linkDownBandwidthKbps;
       //网络类型
       this.netBearType = data.bearerTypes[0];
       //网络能力判断 （12具备网络能力 16网络能力通过验证）
       this.netCapList = data.networkCap;
       if(this.netCapList != undefined){
         if(this.netCapList[0]==12 && this.netCapList[1]==16){
           this.isConn = true;
           console.info("net1 isConn :"+ JSON.stringify(this.isConn))
           console.info("net1 当前网络具备连接能力");
         }

       }
     })

     // //默认网络能力
     // connection.getConnectionProperties(netHandle).then((data: connection.ConnectionProperties) => {
     // console.info("net1 connection properties : " + JSON.stringify(data));
     // })
   })
 }

 //蜂窝网络制式
 getNetType(slotId: number) {
   //获取网络运营商
   radio.getNetworkState((err: BusinessError, data: radio.NetworkState) => {
     if (err) {
       console.info(`net1 getNetworkState failed, callback: err->${JSON.stringify(err)}`);
       return;
     }
     this.radioData = data;
     console.info(`net1 getNetworkState success, callback: data->${JSON.stringify(data)}`);
   });

   //获取蜂窝网络类型
   //GSM：2G CDMA:电信2G WCDMA：3G TDSCDMA：3G LTE：4G NR：5G
   radio.getSignalInformation(slotId, (err: BusinessError, data: Array<radio.SignalInformation>) => {
     if (err) {
       console.info(`net1 getSignalInformation failed, callback: err->${JSON.stringify(err)}`);
       return;
     }
     this.radioNetType = data[0].signalType;
     console.info(`net1 getSignalInformation success, callback: data->${JSON.stringify(data)}`);
   });
 }

 //网络信息获取
 getNetProperties() {
   //获取当前默认网络
   connection.getDefaultNet().then((netHandle: connection.NetHandle) => { //wifi 移动网络
     //默认网络能力
     connection.getConnectionProperties(netHandle).then((data: connection.ConnectionProperties) => {
       this.netInterfaceName = data.interfaceName;
       this.netLinks = data.linkAddresses[0];
       this.netRotues = data.routes[0]; //ip
       this.netGateway = data.dnses[0];

       console.info("net1 netLinks : " + JSON.stringify(this.netLinks));
       console.info("net1 netRotues : " + JSON.stringify(this.netRotues));
       console.info("net1 netGateway : " + JSON.stringify(this.netGateway));

     })
   })
 }

 //网络代理获取
 getProxy(){
   connection.getDefaultHttpProxy((error: BusinessError, data: connection.HttpProxy) => {
     if(error) {
       console.info("net1 error : " + JSON.stringify(error));
       return
     }
     console.info("net1 httpProxy : " + JSON.stringify(data));
     this.netProxy = data;
   });
 }
}