PyQt5多线程的执行和停止

from PyQt5 import QtCore,QtWidgets,QtGui from PyQt5 import uic import sys,time class THREAD_APP(QtWidgets.QMainWindow): def __init__(self): QtWidgets.QMainWindow.__init__(self) self.ui = uic.loadUi('thread.ui',self) self.thread={} self.pushButton.clicked.connect(self.start_worker_1) self.pushButton_2.clicked.connect(self.start_worker_2) self.pushButton_3.clicked.connect(self.start_worker_3) self.pushButton_4.clicked.connect(self.stop_worker_1) self.pushButton_5.clicked.connect(self.stop_worker_2) self.pushButton_6.clicked.connect(self.stop_worker_3) def start_worker_1(self): self.thread[1] = ThreadClass(parent=None,index=1) self.thread[1].start() self.thread[1].any_signal.connect(self.my_function) self.pushButton.setEnabled(False) def start_worker_2(self): self.thread[2] = ThreadClass(parent=None, index=2) self.thread[2].start() self.thread[2].any_signal.connect(self.my_function) self.pushButton_2.setEnabled(False) def start_worker_3(self): self.thread[3] = ThreadClass(parent=None,index=3) self.thread[3].start() self.thread[3].any_signal.connect(self.my_function) self.pushButton_3.setEnabled(False) def stop_worker_1(self): self.thread[1].stop() self.pushButton.setEnabled(True) def stop_worker_2(self): self.thread[2].stop() self.pushButton_2.setEnabled(True) def stop_worker_3(self): self.thread[3].stop() self.pushButton_3.setEnabled(True) def my_function(self,counter): cnt = counter index = self.sender().index if index == 1: self.progressBar.setValue(cnt) if index == 2: self.progressBar_2.setValue(cnt) if index == 3: self.progressBar_3.setValue(cnt) class ThreadClass(QtCore.QThread): any_signal = QtCore.pyqtSignal(int) def __init__(self,parent=None,index=0): super(ThreadClass,self).__init__(parent) self.index = index self.is_running = True def run(self): print('Starting thread...',self.index) cnt=0 while(True): cnt+=1 if cnt==99: cnt=0 time.sleep(0.01) self.any_signal.emit(cnt) def stop(self): self.is_running=False print('stopping thread...',self.index) self.terminate() app=QtWidgets.QApplication(sys.argv) mainWindow = THREAD_APP() mainWindow.show() sys.exit(app.exec_()) #https://www.bilibili.com/video/BV1za41187ea?from=search&seid=11395986933535666084&spm_id_from=333.337.0.0