What is the motivation for such a project?
*Sent:* Thursday, May 05, 2016 at 10:31 AM
*From:* "Edward Sutton" <edward.sut...@subsite.com>
*To:* "Robert Iakobashvili" <corobe...@gmail.com>
*Cc:* "interest@qt-project.org" <interest@qt-project.org>
*Subject:* Re: [Interest] Qt interfacing to Android native UI ?
An interesting project:
https://github.com/grassator/react-qml
|react-qml| is a bridge library that allows to use React.js with QML.
Example
Usage of |ReactQml| is pretty straightforward — the only difference
from web version is that you need to pass id of the qml item to
|React.render| instead of DOM node. For example:
import QtQuick 2.4 import QtQuick.Controls 1.3 import "js/ReactQml.js"
as React ApplicationWindow { id: root title: qsTr("React QML") width:
300 height: 300 visible: true function reactRender(x, y) { var props =
{ x: 100, y: 100, width: 100, height: 100, color: '#000' }; var
childProps = { x: 25, y: 25, width: 50, height: 50, color: '#fff' };
var child = React.createElement(React.Rectangle, childProps);
React.render(React.createElement(React.Rectangle, props, child),
root); } Component.onCompleted: { reactRender(); } }
-Ed
On May 2, 2016, at 1:50 PM, Robert Iakobashvili
<corobe...@gmail.com> wrote:
Dear Ekke,
Thank you for sharing your experience with
qt.labs.controls Qt Quick Controls2 in 5.7.
Sure, we'll be reading you blog.
Kind regards,
Robert
On Mon, May 2, 2016 at 8:38 PM, ekke <e...@ekkes-corner.org> wrote:
I really like the new qt.labs.controls from Qt 5.6 (will
become Qt Quick
Controls2 in 5.7)
using these lightweight controls together with Material Style
(Android) or
Universal Style (Windows) with light or dark themes and all
the new Controls
(like Drawer) for mobile-app-navigation and also HighDPI
Support you can now
first time ever develop mobile apps with nearly native
feeling. (iOS style
will come later when the new controls are stable)
I prefer to write UI in QML compared with React Native's mix
of Markup and
JS or using Xamarin where you have one language but different
code for
x-platform.
Before leaving QT for mobile apps - give it a try.
BTW: I'm writing a blog series about my experiences
https://urldefense.proofpoint.com/v2/url?u=http-3A__j.mp_qt-2Dx&d=CwIGaQ&c=G4BpsyPyB19LB50bn2swXw&r=cAG2c-SQES5P2qb8IW-uwnBOCX_f2qYJIlzenFnoHUc&m=5X_i0s6I6cbSYRP1ZGUPRMZL0OkDR9nmhuR8RAiIems&s=13ftz5U9_dHo8BjIh3RKmuX9DkqPXcAx9ctnx5a0YHA&e=
and
I'll develop - as proof of concept - Conference APPs for QtCon
and Qt World
Summit.
ekke
Am 02.05.16 um 20:17 schrieb Robert Iakobashvili:
Dear Edward,
React Native - good catch.
Thank you so much for sharing this idea
and your experience!
Kind regards,
Robert
On Mon, May 2, 2016 at 8:08 PM, Edward Sutton
<edward.sut...@subsite.com>
wrote:
On May 1, 2016, at 4:27 AM, Robert Iakobashvili
<corobe...@gmail.com> wrote:
Dear Edward,
What are your conclusions and which direction you decided on
after your experiments?
I never made much progress. While QML looked more "native
like” I never felt
comfortable using it.
I am doing my new iOS and Android development using Facebook's
react-native.
React Native calls native UI from Javascript.
https://urldefense.proofpoint.com/v2/url?u=https-3A__facebook.github.io_react-2Dnative_&d=CwIGaQ&c=G4BpsyPyB19LB50bn2swXw&r=cAG2c-SQES5P2qb8IW-uwnBOCX_f2qYJIlzenFnoHUc&m=5X_i0s6I6cbSYRP1ZGUPRMZL0OkDR9nmhuR8RAiIems&s=e9hAWWmY2S0Mo76_ex-_PF0NFk6ccgclP50872TSMfs&e=
When it makes sense I select UI components that have
counterparts in Android
and iOS in order to increase code re-use. I have seem claims
of 85% code
re-use and from my experience I do not doubt these claims.
So far, so good...
-Ed
Thanks,
Kind regards,
Robert
On Thu, Nov 5, 2015 at 2:40 PM, Edward Sutton
<edward.sut...@subsite.com>
wrote:
Hi Robert,
The approach you outlined below was the one I was considering.
Use of common
C++ business layer, widgets for desktops, iOS native UI, and
Android native
UI.
The Android native UI was my biggest concern.
I am going to continue experimenting with QML for a few more days
Hi Ben,
Thank you for sharing your Android UI interfacing code. I
will take a look.
Your iOS UI interfacing code was *very* helpful in
understanding how to mix
C++ and Objective-C++ in the same *.mm file. Java seems much more
challenging to interface to native UI. However all I have
done so far is
simple JNI calls into Java.
Thank you both,
-Ed
On Nov 5, 2015, at 1:51 AM, Ben Lau <xben...@gmail.com> wrote:
Not really a solution for wrapping Android UI in Qt app. But I
have already
developed an image picker with native UI and communication
library between
Qt and Java/Android. May be it could used as example / core
framework.
Image Picker
https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_benlau_quickandroid_blob_DEV_QuickAndroid_ImagePicker.qml&d=CwIBaQ&c=G4BpsyPyB19LB50bn2swXw&r=cAG2c-SQES5P2qb8IW-uwnBOCX_f2qYJIlzenFnoHUc&m=nrrSNDcnq0DATI4qf2zrUTNMu_m6wsOws_Oz0VoTjAU&s=b9qfgeLoPCVjdDxzeFLLLuGl5EwnXG7Gv0sTjZwTjwU&e=
System Dispatcher - Invoke Java/Android function and vice visa
without using
JNI. Data type conversion is handled automatically.
https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_benlau_quickandroid_blob_DEV_qasystemdispatcher.h&d=CwIBaQ&c=G4BpsyPyB19LB50bn2swXw&r=cAG2c-SQES5P2qb8IW-uwnBOCX_f2qYJIlzenFnoHUc&m=nrrSNDcnq0DATI4qf2zrUTNMu_m6wsOws_Oz0VoTjAU&s=m04hl55EIBiEA7ELiqTGCj-dyEOx30iqkz2skvOT-rM&e=
-Ed
On Nov 5, 2015, at 1:36 AM, Robert Iakobashvili
<corobe...@gmail.com> wrote:
Dear Ed,
It seems that I have something native for iOS, but not for
Android.
I was thinking now about another path to take:
1. Common layer - with business app logic;
2. Presentation layer with the below options:
2.1 Qt Desktop layer to cover Win, Mac and Linux;
2.2 iOS-Native;
2.3 Android-Native.
Please, update us on your success of co-existence between
Qt-Widgets and QML and whether after adding QML it is still
sustains tough memory environment on iOS and low-memory
Android devices.
Thank you in advance.
Regards,
Robert
On Tue, Nov 3, 2015 at 5:12 PM, Edward Sutton
<edward.sut...@subsite.com>
wrote:
I know I can use native iOS UI by mixing Objective-C++ and C++
in the same
*.mm file.
I have done a little Android JNI. Are there any examples for
interfacing to
Android native UI elements?
I need to create a UI picker for manually entering GPS
latitude and
longitude in degrees, or degrees, minutes, seconds for a
widgets app. I
expect it will be hard to make a touch usable widget UI
picker. Developing
a native interface may take similar amount of time but result
will be much
superior.
Thank you for your advice,
-Ed
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