Dynamically created QtQuick Dialogs not working on Android device

// Works on android
FileDialog {
id: fileOpenDialog;
visible: false;
}

// Doesn't work on android
var fileDialog = Qt.createQmlObject('\
import QtQuick 2.2
import QtQuick.Controls 1.1
import QtQuick.Dialogs 1.1;
  FileDialog {
     id: fileOpenDialogAlt;
     visible: true;
    }', mainWindow, "fileDialogDynamic");