pyqt5 进度条多线程卡顿,求解?
点击按钮,启动进度条,也按网上方式用了多线程,但是还会卡顿,求解?
import sysimport time
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
class test(QWidget):
def __init__(self):
super(test, self).__init__()
self.setupUi()
def setupUi(self):
self.setFixedSize(500, 90)
self.layout = QGridLayout()
self.main_widget = QWidget(self)
self.progressBar = QProgressBar()
self.btn = QPushButton('start')
self.layout.addWidget(self.progressBar,0,0,1,1)
self.layout.addWidget(self.btn,1,0,1,1)
self.setLayout(self.layout)
# 创建并启用子线程
self.thread_1 = Worker()
self.thread_1.progressBarValue.connect(self.copy_file)
self.btn.clicked.connect(self.ck)
def ck(self):
for i in range(101):
time.sleep(0.1)
self.thread_1.progressBarValue.emit(i) # 发送进度条的值 信号
def copy_file(self, i):
self.progressBar.setValue(i)
class Worker(QThread):
progressBarValue = pyqtSignal(int) # 更新进度条
def __init__(self):
super(Worker, self).__init__()
def run(self):
self.progressBarValue.emit(1) # 发送进度条的值 信号
if __name__ == '__main__':
app = QApplication(sys.argv)
testIns = test()
testIns.show()
sys.exit(app.exec_())
回答:
time.sleep 会阻塞整个进程。
可以考虑使用threading.Event 的wait()方法
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