[Interest] Native UI on Android (without QtQuick)

[Attila Csipa]

On 11/18/2014 11:37 PM, Ian Monroe wrote:
>
> On Tue, Nov 18, 2014 at 7:13 AM, Attila Csipa <qt at csipa.in.rs 
> <mailto:qt at csipa.in.rs>> wrote:
>
>
>     It turns out you can do a fully functional (ie. not a subset)
>     Android UI
>     just by using QAndroidExtras and it's QAndroidJNIObject class from
>     C++,
>     without ever touching QML or QtQuick. At this point, this is just an
>     exercise, for details see
>
>     http://achipa.blogspot.com/2014/11/native-ui-in-qt-on-android-without.html
>
>
>     Let me know if you have or are aware of a project that would benefit
>     from such an approach (or would be interested in, say, a QML-wrapped
>     native layer).
>
>
> This could make more sense. You certainly need some more wrapping, 
> even if it's at the C++ level. Otherwise why are you using Qt at all?
>
> If you can use QAbstractItemModel with a native Android widget easily, 
> then it becomes interesting.  C++ is the only thing all platforms - 
> WinRT, iOS, Android, win32, Linux - have in common, which is what Qt 
> is leveraging of course. Being able to use native UI on the frontend 
> while keeping all the business logic in a crossplatform C++ library 
> would be an interest trojan-horse way to simplify crossplatform 
> development (eg the project managers don't need to know, they can be 
> assured that native toolkits are being used.)

Wrapping/interfacing is reasonably easy, I made a bit of 
proof-of-concept for wrapping these in QML. No model integration just 
yet, but property bindings, signal/slots and JS scripting of those work 
just fine. See

http://achipa.blogspot.com/2014/11/qml-wrappers-for-native-android.html

for the (not too gory) details. QAbstractItemModel integration shouldn't 
be that difficult either from there on, might do it for kicks for 
another blog post.

PS And yes, I still know we have QtQuick.Controls for Android :)

Best regards,
Attila Csipa

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