问题描述
我是 Flutter 新手,我正在编写一个应用程序,它使用 UDP 将加速度计的值从我的手机传输到 PC 它正在工作,但我每秒获得大约 5 到 10 个值我想要至少每秒 100 个加速度计值我这里的服务器是我写的代码 https://github.com/USAMAWIZARD/send-acc-with-udp-flutter 我应该在我的代码中优化什么来获取值。
import 'dart:convert';
import 'package:async/async.dart';
import 'package:Flutter/material.dart';
import 'package:Flutter/widgets.dart';
import 'package:sensors/sensors.dart';
import 'package:easy_udp/easy_udp.dart';
import 'package:wifi/wifi.dart';
void main() {
runApp(MaterialApp(home: Home()));
}
class Home extends StatefulWidget {
@override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
TextEditingController ipaddress = new TextEditingController();
TextEditingController portno = new TextEditingController();
String srcip;
int desport;
String desip;
var socket;
int i = 0;
void initializer() async {
print("values initialized");
desip = ipaddress.text;
srcip = await Wifi.ip;
desport = int.parse(portno.text);
socket = await EasyUDPSocket.bind(srcip,8000);
}
void init() async {
await initializer();
accelerometerEvents.listen((AccelerometerEvent event) async {
await socket.send(
ascii.encode(event.toString() + i.toString()),desip,desport);
// await socket.send(ascii.encode(i.toString()),desport);
print(i);
i += 1;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('send udp data'),centerTitle: true,),body: Column(
mainAxisAlignment: MainAxisAlignment.start,crossAxisAlignment: CrossAxisAlignment.center,children: [
TextField(
controller: ipaddress,textAlign: TextAlign.left,decoration: Inputdecoration(
border: InputBorder.none,hintText: 'IP Address',hintStyle: TextStyle(color: Colors.grey),TextField(
controller: portno,hintText: 'Port NO',TextButton(
child: Text("start sending"),onpressed: () async => {
init(),})
],);
}
}
解决方法
我最终使用了一个不同的库,它提供了一个名为 interval 的参数,我将该参数设置为 Sensors.SENSOR_DELAY_FASTEST,它每秒给我大约 100 个值
import 'dart:convert';
import 'package:async/async.dart';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_sensors/flutter_sensors.dart';
import 'package:easy_udp/easy_udp.dart';
import 'package:wifi/wifi.dart';
void main() {
runApp(MaterialApp(home: Home()));
}
class Home extends StatefulWidget {
@override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
TextEditingController ipaddress = new TextEditingController();
TextEditingController portno = new TextEditingController();
String srcip;
int desport;
String desip;
var socket;
int i = 0;
var stream;
void initializer() async {
print("values initialized");
desip = ipaddress.text;
srcip = await Wifi.ip;
desport = int.parse(portno.text);
socket = await EasyUDPSocket.bind(srcip,8000);
stream = await SensorManager().sensorUpdates(
sensorId: Sensors.ACCELEROMETER,interval: Sensors.SENSOR_DELAY_FASTEST,);
}
void init() async {
await initializer();
stream.listen((sensorEvent) async {
await socket.send(
ascii.encode(sensorEvent.datax.toString() + i.toString()),desip,desport);
// await socket.send(ascii.encode(i.toString()),desport);
print(i);
i += 1;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('send udp data'),centerTitle: true,),body: Column(
mainAxisAlignment: MainAxisAlignment.start,crossAxisAlignment: CrossAxisAlignment.center,children: [
TextField(
controller: ipaddress,textAlign: TextAlign.left,decoration: InputDecoration(
border: InputBorder.none,hintText: 'IP Address',hintStyle: TextStyle(color: Colors.grey),TextField(
controller: portno,hintText: 'Port NO',TextButton(
child: Text("start sending"),onPressed: () async => {
init(),})
],);
}
}