[图片] [图片] 原本是想删除输有123那项，下标打印了也没错，但是删除以后，更新视图，却少了输有456哪项，貌似每次都是删最后一个，不知道问题出在哪，各位路过的大佬帮忙看下，谢谢啦

服务挂个脚本端监听，收到小程序端通过udp发送的数据后又回馈数据到小程序，在开发工具上能正常收发数据，真机上收不到message段数据。 var that = this const udp = wx.createUDPSocket(8000) udp.bind() udp.send({ address: 'x.x.x.x', port: 8000, message: '' }), udp.onMessage(function (res){ let unit8Arr = new Uint8Array(res.message.data); let encodedString = String.fromCharCode.apply(null, unit8Arr); let message2 = decodeURIComponent(escape((encodedString))); that.setData({ res_test2:res, }) console.log(that.data.res_test2) }) 模拟器上能正常收到数据（message段） [图片] 真机上收不到（message段）数据，remoteInfo段正常 [图片]

UDPSocket.onMessage 在不先调用 UDPSocket.send 无法接受消息that.udpSocket = wx.createUDPSocket(); that.udpSocket.bind(35675); that.udpSocket.send({    address: '192.168.1.120',    port: 54321,    message: "hello world!" }); that.udpSocket.onListening(function(res) {    console.log(res); }); that.udpSocket.onMessage(function(res) {    console.log(res.message);    console.log(res.remoteInfo.address);    console.log(res.remoteInfo.port);    console.log(res.remoteInfo.size); }); //基础库2.10.2

使用开发者工具调试时，udpSocket.onMessage可以发送也能接收UDP广播包和指定ip的UDP包。但预览时可以发送成功，接收不到udp包。为什么？ var udp = wx.createUDPSocket(); if(udp == null){ console.log("udp建立不成功") return ; } var that = this; const loactionPort = udp.bind(28266); var testData = loactionPort; that.setData({ testData: testData}); udp.onListening(function(res) { }); udp.onMessage(function(res) { console.log(res); var remoteInfo = new Object; var ipAddr = res.remoteInfo.address; var port = res.remoteInfo.port; var str = ""; for (var i = 0; i < res.message.data.length; i++) { str = str + String.fromCharCode(res.message.data[i]); } console.log(str); var testData = str; testData = "str"; that.setData({testData:testData}); var msg = JSON.parse(str); remoteInfo.ipAddr = ipAddr; remoteInfo.port = port; remoteInfo.msg = msg; that.setData({ remoteInfo: remoteInfo }); console.log(that.data.remoteInfo); });