Question

我正在尝试制作一个可接收UDP数据并使用python（PyQt5）在列表视图中显示数据的应用程序。当我启动接收器时，该应用程序卡住并且没有响应。我怎样才能解决这个问题？请参见下面的代码。

import sys
import os
import socket
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *

class udpReceiverApp():
     app = QApplication (sys.argv)
     x = 1
     ip = "192.168.1.4"
     port =515
     server_start = True
     sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
     sock.bind((ip,port))

     def __init__(self):
         self.w = QWidget()
         self.lbl = QLabel ("udp receiver",self.w)
         self.btn = QPushButton ("click me",self.w)
         self.lst = QListWidget(self.w)
         self.lst.resize(200,100)

         self.lbl.move(10, 90)
         self.btn.move(50, 50)
         self.lst.move(10, 90)

         self.btn.clicked.connect(self.startReceiver)

         self.w.setGeometry(300, 300, 300, 200)
         self.w.setWindowTitle("udp receive")
         self.w.show()
         sys.exit(udpReceiverApp.app.exec_())

     def addLstItem(self):
         self.lst.insertItem(0,"item"+str(udpReceiverApp.x) )
         udpReceiverApp.x +=1

     def startReceiver(self):

         while udpReceiverApp.server_start:
               data, addr = self.sock.recvfrom(1024)
               self.lst.insertItem(0,data)

udpReceiverApp()

Answer 1

主线程中不应锁定无限循环，因为它会锁定Qt事件循环，而应在另一个线程中执行并通过信号发送信息

<canvas id="c"></canvas>
<script src="https://threejsfundamentals.org/threejs/resources/threejs/r102/three.min.js"></script>
<script src="https://threejsfundamentals.org/threejs/resources/threejs/r102/js/CurveExtras.js"></script>

如何编写一个无限循环来接收UDP数据？

1 个答案: