PyQt4多线程定时刷新控件

1.通过事件关联和线程关联的方法刷新控件

self.listview=updatelistview()
self.listview.updateText.connect(self.viewlist)

listvew = threading.Thread(target=self.updatalistview, args=())
#创建守护进程
listvew.setDaemon(True)
listvew.start()

def updatalistview(self):
    while True:
        #if self.refresh==False:

            #线程定时睡眠
            time.sleep(1)
            self.listview.addseverthread()

def viewlist(self):

        print 'view'
        if self.refresh==False:

            self.model = QStandardItemModel(self.ui.listView)
            for food in listviewdata:
                   item = QStandardItem(food)
                    # Add a checkbox to it
                   item.setCheckable(True)
                    # Add the item to the model
                   self.model.appendRow(item)

class updatelistview(QtCore.QObject):
    updateText = QtCore.pyqtSignal(str)
    def addseverthread(self):

        listvew = threading.Thread(target=self.monitor_vector, args=())
        #创建守护进程
         listvew.setDaemon(True)
        listvew.start()

    def monitor_vector(self):

        #发送信号槽事件
        self.updateText.emit('updated list')

2.整个实现流程