Ui size not fit android device

AndreaFurlani

Hello, I am currently developing an application for android.
The mainWindow is setted correctly and fit my smartphone screen, but when I open a new window the lower part of the window is partially covered:
alt text

This is how I set the ui in the code and in the designer:

    uiBox->setupUi(this);
    uiBox->label->setText("Devices connected to " + infoBox.name());
    QScreen *screen = QGuiApplication::primaryScreen();
    this->resize(screen->availableSize().width(),screen->availableSize().height());
    this->showFullScreen();

alt text

Moreover, as you can see from the smartphone screenshot the proportions are not respected.
How can I solve this problem?
Thank you for the help.