On Tue, Nov 18, 2014 at 7:13 AM, Attila Csipa <q...@csipa.in.rs> wrote:
> HI, > > 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 > > but there are actually some advantages (especially if you have a > super-simple UI or are dealing with embedded) taking this less-traveled > path: > > Advantages to such a Controls-less approach are: > > Full UI functionality available, regardless of Qt version > Styling always latest platform-native > Native UI performance > Smaller APK size (currently at least ~5MB less, potentially ~7MB) > Smaller memory footprint (35MB less for Hello world, more as app > complexity increases) > > Disadvantages: > > Not cross-platform > Significantly increased code complexity, especially with more complex UIs > Harder to debug due to dynamic nature and lack of tooling support > > 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.) Ian
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