Qt 定时器signal/slot阻塞主线程界面

Qt 定时器signal/slot阻塞主线程界面
示例代码：

<span>class bicycle : public QMainWindow
{
public slots:
    void uploadDeviceStatus();
};


bicycle::bicycle(QWidget *parent) :
    QMainWindow(parent)
{
    QTimer *timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(uploadDeviceStatusSlot()));
    timer->start(1000);
}
</span><span>class bicycle