How to Find a UI By ID at Runtime

Chris Weber

Couldn't find this question answered, but I have to believe it is a common question:
Utterly new to Qt and I'm trying to access a UI declared in an QML file at runtime in Android/Java. Someone else created this, I just need a handle to their UI (in Java).

QML has

VideoWindow {
    id: player
    anchors.fill: parent
    focus: false
}

sierdzio

I don't think it's possible get a window handle (if that's what you mean) on Android. Qt draws everything into an OpenGL texture on Android - all the system "sees" is a picture.

There is a way for Qt apps to use Java stuff - through JNI. See QAndroiJniObject maybe it will help. To get some data from QML into Java via JNI, you first will need to pass the data from QML to C++.

Chris Weber

Hm so for an a/v playing app, would it be fair to say the a/v window (in native Android) should be in a separate activity with Qt drawn over it?

sierdzio

@Chris-Weber said in How to Find a UI By ID at Runtime:

Hm so for an a/v playing app, would it be fair to say the a/v window (in native Android) should be in a separate activity with Qt drawn over it?

You can play AV in QML using QtMultimedia module.

Whether it's possible to overlay Qt app on top of another activity - I'm not sure, you'd have to try it out.