QDeclarativeView window cannot transparent on android

[Brian.H]

Hello everyone，
I use QMainWindow create as first window,and then QDeclarativeView create as other window.
I set the QDeclarativeView as transparent, the QDeclarativeView window can transparent on Linux and window system,
But I find this is not OK on android, I found that the QDeclarativeView window cannot transparent

  code as below:
  QMainWindow window;
  window.resize(800, 480);
 ........>>painter the picture to MainWindow
  window.show()
  QDeclarativeView * m_pDeclarativeView = new QDeclarativeView ();
  // set view as transparent background
  m_pDeclarativeView->setAttribute(Qt::WA_TranslucentBackground,true);
  m_pDeclarativeView->setStyleSheet(QString("background: transparent"));
  m_pDeclarativeView->setWindowFlags(Qt::FramelessWindowHint);
  m_pDeclarativeView->setSource(QUrl::fromLocalFile(("main.qml")));
  m_pDeclarativeView->show();

  main.qml
  import QtQuick 1.1
  Rectangle {
    width: 360
    height: 360
   color: "transparent"

   MouseArea {
     anchors.fill: parent
     onClicked: {
        Qt.quit();
     }
 }

  Text {
      color: "red"
      text: qsTr("Hello World")
      anchors.centerIn: parent
  }

}

Could you help me solved this problem?
Thanks in advance!

[p3c0]

@Brian.H QDeclarativeView is deprecated in Qt5 and IMO with Qt4.8 it was never taken further for android platform. I would strongly suggest you update to Qt5 possibly Qt 5.4.1. It works nicely on android.

[JKSH]

Hi @Brian.H,

To extend @p3c0's answer, you should use QQuickView instead of QDeclarativeView. (In other words, Qt Quick 2 instead of Qt Quick 1)

[Brian.H]

Hi @p3c0,
Hi @JKSH,
Thank you very much for your suggestion!
Because My android platform is 2.3.3, and when I use QQuickView instead of QDeclarativeView,
I found that the qml page could not draw on the android system，so I use the QDeclarativeView
to draw the qml.

[JKSH]

@Brian.H said:

Because My android platform is 2.3.3, and when I use QQuickView instead of QDeclarativeView,
I found that the qml page could not draw on the android system，so I use the QDeclarativeView
to draw the qml.

Ah, I see.

I don't have experience with an old platform and Qt Quick 1, sorry...!