[Interest] Android launch screens?

[Samuel Nevala]

Hi,

Startup flickering can be fixed by creating custom Android theme where
splash screen image is application background. Custom theme on the other
hand does not work as expected https://bugreports.qt.io/browse/QTBUG-44579.

Samuel Nevala

On 5 August 2015 at 23:48, Jason H <jhihn at gmx.com> wrote:

> Within the template QtActivity.java:
>  if
> (m_activityInfo.metaData.containsKey("android.app.splash_screen_drawable"))
>
> getWindow().setBackgroundDrawableResource(m_activityInfo.metaData.getInt("android.app.splash_screen_drawable"));
>   else
>     getWindow().setBackgroundDrawable(new ColorDrawable(0xff000000));
>
> That happens. But then later loadApplication(...) uses Ministro to load
> the Qt app. That's where I get lost. It seems that the handoff is not as
> good as it can be?
>
>
>
> Sent: Wednesday, August 05, 2015 at 4:15 PM
> From: "Alexey Godko" <koloboid at gmail.com>
> To: "Jason H" <jhihn at gmx.com>
> Cc: "interest at qt-project.org" <interest at qt-project.org>
> Subject: Re: [Interest] Android launch screens?
>
> I'm expecting the same issues, but on all my test devices black screen
> tooks less than one second, so it is not issue for me. May be custom redraw
> on Android's activity will help, I'll try it when time.
> Simple
> setting getWindow().getDecorView().findViewById(android.R.id.content).setBackgroundColor(0xFF0000);
> does not work. so it needs more investigation
>
> 2015-08-05 22:01 GMT+03:00 Jason H <jhihn at gmx.com>:
>
> Thanks, I have this working, kind-of.
>
> 1. Why does the resource merger only support [a-z]._ ? Android supports
> [A-Za-z]._
> 2. When My app launches it gets a black screen (with the title of the
> app), then goes to the splash.png, then goes back to black, then shows the
> IU. What are the tips for getting this as seamless as possible?
> My main Window element has {color: "..." } and the splash is of the same
> color. It seems it should not go back to black?
> And I think the title bar on launch is able to be hidden by a manifest
> setting maybe?
>
> Many thanks.
>
>
>
> Sent: Wednesday, August 05, 2015 at 11:29 AM
> From: "Alexey Godko" <koloboid at gmail.com[koloboid at gmail.com]>
> To: No recipient address
> Cc: "interest at qt-project.org[interest at qt-project.org]" <
> interest at qt-project.org[interest at qt-project.org]>
> Subject: Re: [Interest] Android launch screens?
>
> Just putting splash.png to res/drawable and line below to
> AndroidManifest.xml<meta-data
> android:name="android.app.splash_screen_drawable"
> android:resource="@drawable/splash"/>
>
> works for me
> Also, may be you want to display the same splash in your QML code with
> dynamically load rest of scene using Loader.
>
> 2015-08-05 18:03 GMT+03:00 Jason H <jhihn at gmx.com[http://jhihn@gmx.com]>:This
> question is 50% Qt and 50% Android. Now that I have a launch screen working
> in iOS, I'd like the same thing in Android.
>
> Now, iOS lists the launch screen separately from the rest of the
> application, so it can be loaded without having to load the whole app. I'm
> not sure this is the case in Android. Most android tutorials just create a
> Activity subclass with a timeout.
>
> I was wondering if:
> 1) There is a true launch screen for android (not just faking it with a
> timeout - I want it to only be displayed for as long as the app is loading),
> 2) How I can accomplish it in Qt? I *think* some people may have done
> something with a Loader Element to create a stub, then dynamically load the
> screens, but I'm not sure of what all that entails, and if there are any
> caveats.
> 2a) Also, do I need to provide an Activity, or can I do it all in Qt/QML?
> 2b) Is there any actual perceived benefit? The iOS makes the app seem more
> responsive in a way, and the loading time is not significantly increased.
>
> Many thanks in advance.
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