pyqt5多线程防止界面假死方案

我们在进行GUI开发时会遇见假面假死情况，这样让用户体验非常差，为了防止这种情况的出现，那么我们要引进多线程概念

演示

1. 首先创建一个带ui文件，我们命名为A.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'aa.ui'
#
# Created by: PyQt5 UI code generator 5.15.2
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(261, 181)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(80, 60, 75, 23))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 261, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "测试"))

2.创建main.py去调用A.py

from A import Ui_MainWindow

main.py完整代码

# -*- coding: utf-8 -*-
from PyQt5.QtCore import *
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow,QMessageBox
#调用UI
from A import Ui_MainWindow
qmut_1 = QMutex()  # 创建线程锁
qmut_2 = QMutex()
# 继承QThread
class Thread_1(QThread, Ui_MainWindow):  # 线程1
    def __init__(self):
        super().__init__()


    def run(self):
        qmut_1.lock()  # 加锁
        while True:
            print('青柠分享：https://www.qingningz.cn/')
        qmut_1.unlock()  # 解锁


class MyMainWindow(QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(MyMainWindow, self).__init__(parent)
        self.setupUi(self)
        #pushButton为按钮
        self.pushButton.clicked.connect(self.click_1)  # 绑定槽函数



    def click_1(self):
        self.thread_1 = Thread_1()  # 创建线程
        self.thread_1.start()  # 开始线程






if __name__ == "__main__":
    app = QApplication(sys.argv)
    myWin = MyMainWindow()
    myWin.show()
    sys.exit(app.exec_())

3.运行程序，点击按钮，代码就会调用main.py的Thread_1无限循环打印内容，界面也不会卡顿