问在运行另一个QThread上的成员方法时，无法将事件发送到其他线程所拥有的对象

EN

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    initGui(ui);

    // Create background worker thread
    backgroundWorker = QThread::create([this] {
        backgroundMethod();
    });

    // Define when finished with work
    connect(backgroundWorker, &QThread::finished, [this] () {
        qDebug() << "Background method has finished";

        // Stop movie
        ui->lblLoading->movie()->stop();

        // go to next screen
        ui->tabbarMainWidget->tabBar()->setCurrentIndex(1);

        //show backup icon files
        if(filesToBackup.size() > 0) {
            qDebug() << "There are files to backup!";
            ui->lblInfoImage->show();
        }
    });

    // Start worker thread
    backgroundWorker->start();
}

void MainWindow::backgroundMethod() {
    for (int i = 0; i < 10; i++) {
        qDebug() << "Hello World";
    }
}