from PySide.QtGui import *
from PySide.QtCore import *
import sys
from time import sleep
class MyWorkerThread(QThread):
def __init__(self, parent=None):
super(MyWorkerThread, self).__init__(parent)
def run(self):
timer1 = QTimer()
timer1.singleShot(1000, self.alarm_goes1)
print "Timer 1 Start"
timer1.start()
def alarm_goes1(self):
print "goes off 1"
class MainFrame(QWidget):
def __init__(self):
QWidget.__init__(self)
self.thread = MyWorkerThread(self)
print "Thread Start"
self.thread.start()
timer2 = QTimer()
timer2.singleShot(1000, self.alarm_goes2)
print "Timer 2 Start"
timer2.start()
def alarm_goes2(self):
print 'goes off 2'
if __name__ == "__main__":
app = QApplication(sys.argv)
main = MainFrame()
main.show()
sys.exit(app.exec_())
输出:
Thread Start
Timer 2 Start
Timer 1 Start
goes off 2
请解释为什么alarm_goes1不会执行。我怎么能做到呢?
编辑:
def run(self):
timer1 = QTimer()
timer1.singleShot(2000, self.alarm_goes1)
print "Timer 1 Start"
timer1.start()
self.exec_()
self._alive = True
while self._alive:
print 'this part will not execute'
self.sleep(1)
使用self.exec_()
这两个计时器都可以正常工作,但是while循环中的部分不会出现问题。如果没有self.exec_()
,只有一个定时器可以工作,但是while循环可以工作。
我希望定时器和while循环一起工作。
我尝试在while循环中移动self.exec_()
,但它只会运行一次。
答案 0 :(得分:1)
计时器发布QTimerEvent
,但线程中没有运行事件循环来处理它。
所以你需要做这样的事情:
def run(self):
timer1 = QTimer()
timer1.singleShot(1000, self.alarm_goes1)
print "Timer 1 Start"
timer1.start()
# start the clock
clock = QTimer()
clock.start(1000)
clock.timeout.connect(self.tick)
# start the thread's event loop
self.exec_()
def tick(self):
print 'tick'
并且将它添加到MainFrame
类:
def closeEvent(self, event):
# exit the thread's event loop
self.thread.quit()