Jérôme, Vadim,
I do not have any models and so on, I just need to render some
images/frames by grabbibg a content of some QML item, and
send it to UDP.
I am interested in a way how to do this in a background mode
(is it possible or not at all in Android?).
How about the TV-technology, when I can send, e.g. my video
from a smartphone to the TV via WIFI? How it does work on Android?
PS: And yes, I know, that a battery will be consumed, I do not ask about
battery.
PS2: I am not an Android guru.
Denis
15.02.2018 18:43, Jérôme Godbout пишет:
You can update your model, but the GUI itself should never be able to
render itself, else this might crash. The GUI will redraw only when
bring back to front. You should only touch your model or create a
queue of task to do when you go back up front. Running the main engine
Qml, not sure this is possible, but I might be wrong on this, maybe Qt
people can pitch in into this.
You should have a C++ model or DB that hold the data until the
application is bring back to front to display those data.
------------------------------------------------------------------------
*From:* Denis Shienkov <denis.shien...@gmail.com>
*Sent:* Thursday, February 15, 2018 10:00:54 AM
*To:* interest@qt-project.org
*Cc:* Jérôme Godbout
*Subject:* Re: [Interest] How to make the QML gui be never stopped on
Android
Hi Jérôme,
> <meta-data android:name="android.app.background_running"
android:value="true"/>
I already have this property in My manifect file.
> That service will need to communicate with your application through intent I think. The service could try to wake
your application.
I need to continue render/update for some dynamic QML GUI even when an
application goes to sleep.
I don't know how to use a service to render a some GUI stuff, e.g. in
off-screen mode.
Maybe I need to use a QTimer which will call the
QQuickWindow::update() method,
I don't know...
Denis.
15.02.2018 17:37, Jérôme Godbout пишет:
Hi,
I do the following for quick oauth2 background html handling:
<meta-data android:name="android.app.background_running"
android:value="true"/>
inside the Qt activity tag of the AndroiManifest.xml
I wish it was easier to specify a single network activity that can
continue into the background or at least a network intent that can
wake the application up (could handle the message an/or bring
application up front again).
I think you will need to create a service to have a full fledge UDP
listener that continue even after the application screen goes off.
That service will need to communicate with your application through
intent I think. The service could try to wake your application. Not a
specialist about this but this might help, good luck and let us known
how you did solve it, I'm curious about all this, this still a pain
to make those work properly.
------------------------------------------------------------------------
*From:* Interest <interest-bounces+godboutj=amotus...@qt-project.org>
<mailto:interest-bounces+godboutj=amotus...@qt-project.org> on behalf
of Denis Shienkov <denis.shien...@gmail.com>
<mailto:denis.shien...@gmail.com>
*Sent:* Thursday, February 15, 2018 9:25:38 AM
*To:* interest@qt-project.org <mailto:interest@qt-project.org>
*Subject:* [Interest] How to make the QML gui be never stopped on
Android
Hi all,
I use QML and Qt 5.9.3 on my Android application.
I achieved some tricks that my application continued to
work when the smartphone goes to sleep or when the user
presses the 'power' button, i.e. seems, that an
application running in background mode.
I do not use an Android service here (because I dont
know how to do it, also I'm not sure that this will help).
So, when the application goes to background mode,
I see that it continues to work, because I see that
my UDP "keep-alive" messages are sends and receives.
But, A MAIN problem is that a QML GUI is stopped then...
i.e. does not updates.
I need to do GUI grabbing in a real time and send it
to UDP in any case.
Is it possible to make a GUI work forewer?
BR,
Denis
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