This property is deprecated since QtAndroidActivityView 6.7. We strongly advise against using it in new code.

the same effect can be implemented by using MultiEffect

This property holds the corner radius of the ActivityView, in pixels. The same radius is used by all 4 corners.

An additional rectangle with the same radii can be used to create a frame around the ActivityView:

Rectangle {
    anchors.fill: parent
    radius: 20

    ActivityView {
        anchors.fill: parent
        anchors.margins: 1
        radius: 20

        packageName: "com.android.contacts"
    }
}