White screen for C++/QML application

[Nikos]

Hi there,

I run my Qml application and when the time to show comes, a white
screen is shown. Anybody met this situation again?

[Krzysztof Klinikowski]

Works for me, at least on Sergey branch ;)

--

Best regards,
Krzysztof Klinikowski

[Geoff]

Hi,

I have exactly the same problem.
It seems that the app can't find the .qml files on launching.

--
Geoff

[Jonny]

Did you add QDeclaritive to OtherFiles->android->res->values in your
app dir?
See this video at minute 3.49;
http://labs.qt.nokia.com/2011/02/28/necessitas/
Cheers,
Jon

[Alessandro Portale]

I assume that you used the Qt Quick App wizard of Qt Creator in order
to create your application. The resulting code of that wizard relies
on qmake's "DEPLOYMENT" feature which right now is not supported by
Necessitas. (I am clueless whether Android allows raw file deployment
at all).

However, your white screen may occur because the files are not on the
device.

The qml demos from the video use .qrc files instead, which compile the
qml files into the main binary. See http://chaos.troll.no/~aportale/android-qt-demos/android-qt-demos.zip

Hope that helps,
Alessandro

[Nikos]

Thanks for the help, it is working ! Embedding external , raw files
into the deployment package is an essential think, and I suppose that
it is supported by Android.
I know that there is a thing called Assets.. I will try to find out
more about this and post again.

---------- Forwarded message ----------
From: Alessandro Portale <alessandro.port...@googlemail.com>
Date: Mar 5, 10:33 pm
Subject: White screen for C++/QML application
To: android-qt

I assume that you used the Qt Quick App wizard of Qt Creator in order
to create your application. The resulting code of that wizard relies
on qmake's "DEPLOYMENT" feature which right now is not supported by
Necessitas. (I am clueless whether Android allows raw file deployment
at all).

However, your white screen may occur because the files are not on the
device.

The qml demos from the video use .qrc files instead, which compile the

qml files into the main binary. Seehttp://chaos.troll.no/~aportale/android-qt-demos/android-qt-demos.zip

[armandcyrille.t...@esprit.tn]

please nikos I did not understand how you did to solve your problem. I select the links of the group but I can not access anything. I really need help because since 8 pm I am trying to solve my problem of white display but I can not.

[armandcyrille.t...@esprit.tn]

please.  
I do not understand anything

Le vendredi 4 mars 2011 11:25:01 UTC, Nikos a écrit :

["Lutor, Zoltán"]

Hi,

Could you, please, be a little bit more specific?

Platform, sample from yor code, etc...

Otherwise it is impossible to give any hints...

Br,

Zoltan

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[TAKOUGANG NZEUKOU ARMAND CYRILLE]

hi,

I thank you first for answering me

--

TAKOUGANG NZEUKOU ARMAND CYRILLE

[TAKOUGANG NZEUKOU ARMAND CYRILLE]

this is my code

import QtQuick 2.9

import QtQuick.Controls 2.2

ApplicationWindow {

    visible: true

    width: 640

    height: 480

    title: qsTr("Scroll")

Rectangle{

    width:500

    height:400

    color:"red"

}

    ScrollView {

        anchors.fill: parent

        ListView {

            width: parent.width

            model: 20

            delegate: ItemDelegate {

                text: "Item " + (index + 1)

                width: parent.width

            }

        }

    }

}

[TAKOUGANG NZEUKOU ARMAND CYRILLE]

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this code compiles well, but after execution a very white window appears and I do not understand why while I created a rectangle inside

[TAKOUGANG NZEUKOU ARMAND CYRILLE]

I have this problem with all qml projects so qt puts at my disposal .

please excuse me for the fault because my current language is French 

[Zoltán Lutor]

I've tried your code in Android emulator and it works fine... :(

[TAKOUGANG NZEUKOU ARMAND CYRILLE]

I want to know why it does not work at home  

["Lutor, Zoltán"]

No real idea... :(

What is the deployment platform? Emulator or real device? ARM, x86?

Any error message during building/packaging? What is in the .pro file?

Zoktan

On Saturday, October 6, 2018, 'TAKOUGANG NZEUKOU ARMAND CYRILLE' via android-qt wrote:
> I want to know why it does not work at home
>