how to make a toplevel window on android ?

tataeress

Hi,
is there a way to make a toplevel window android app like how the Qt::Popup flag works on windows?
i want to make an app run on top of every app on android which displays like when you set in the developers options of your smartphone the second screen
the thing works for windows very well but i still didn't figured how to make it on android

jsulm

@tataeress I really doubt a normal app can do such things on mobile systems.

tataeress

maybe can it be made as an activity or service? ( sry i don't have a good knowledge toward android )
cause since that second screen developer option can do it, it should be possible somehow

jsulm

@tataeress said in how to make a toplevel window on android ?:

cause i since that second screen developer option can do it, it should be possible somehow

This is for developer screen which is not for normal applications. I never saw a mobile app doing something like this, so I doubt it is possible (and it is actually good that it is not possible). Why do you need something like this? Personally I would not use such an app.

tataeress

simply, because the app will loses it's concept without it.
also, i think since messenger for example can popup a bubble that moves and that let's you touch whats in the background normally it should be possible to make it

J.Hilk

AFAIK Android as no concept about a top level window, as it is lacking a proper window manager system. At least one like you would have on a proper Desktop System

Your activity is technically a Window, but its always fullscreen

tataeress

it seems that i can achieve this through what android developpers call system_overlay
i still don't know if i can do it with c++
i found that something like this may exist for QML
https://doc.qt.io/qt-5/qml-qtquick-controls2-overlay.html?fbclid=IwAR3aAt6Lj6nVc5drVgLxk9tJ8-jXQS--ZOy2aPsnjoxvqA3L84SfImhVmtM#details