QThread发出finished()信号，但isRunning()返回true, isFinished()返回fals

下面是我的qthread实现的代码。我想从卫星上获取gps数据。即使程序退出gpsSearch()插槽函数，QThread也不会产生finished()信号。每当单击按钮时，就调用locateMe()函数。当线程未启动时，第一次点击按钮，isRunning()函数打印真值，isFinished()函数打印假值。我必须调用QTherad的quit()函数来手动停止线程。之后，它转到gnssProvider类中连接的threadQuit()函数。但即使在那之后，如果我点击按钮，它打印isRunning的真值和isFinished()的假值在locateMe()函数。

GPSInfo::GPSInfo()
{
    hybridGPSFound = satelliteGPSFound = networkGPSFound = false;
    qDebug()<<"Thread Creating";
    gnssThread = new QThread;
    gnssProvider = new LocationFetcher(this,GEOLOCATION_PROVIDER_GNSS,1);
    gnssProvider->moveToThread(gnssThread);
    connect(gnssThread, SIGNAL(started()), gnssProvider, SLOT(gpsSearch()));
    connect(gnssThread, SIGNAL(finished()), gnssProvider, SLOT(threadQuit()));
}
void LocationFetcher::gpsSearch()
{
    if (BPS_SUCCESS != geolocation_request_events(0))
    {
       fprintf(stderr, "Error requesting geolocation events: %s", strerror(errno));
       return;
    }
    geolocation_set_provider(GPS_Search_Provider);
    geolocation_set_period(GPS_Search_Period);
    while (!stopThread)
    {
        bps_event_t *event = NULL;
        bps_get_event(&event, -1);
        if (event)
        {
            if (bps_event_get_domain(event) == geolocation_get_domain() && bps_event_get_code(event) == GEOLOCATION_INFO)
            {
                handle_geolocation_response(event);
                break;
            }
        }
    }
    geolocation_stop_events(0);
    this->quit();
}
void GPSInfo::LocateMe()
{
    qDebug()<<"Thread Running: "<<gnssThread->isFinished();
    qDebug()<<"Thread Running: "<<gnssThread->isRunning();
    gnssThread->start();
    hybridThread->start();
    networkThread->start();
 }