On 4 November 2015 at 06:47, Edward Sutton <edward.sut...@subsite.com> wrote: > On Nov 3, 2015, at 4:24 PM, Federico Buti <fed.b...@gmail.com> wrote: > > On 3 November 2015 at 22:30, Edward Sutton <edward.sut...@subsite.com> > wrote: >> >> > On Nov 3, 2015, at 2:11 PM, Jason H <jh...@gmx.com> wrote: >> > >> >> Sent: Tuesday, November 03, 2015 at 10:12 AM >> >> From: "Edward Sutton" <edward.sut...@subsite.com> >> >> To: "Qt Interest" <interest@qt-project.org> >> >> Subject: [Interest] Qt interfacing to Android native UI ? >> >> >> >> 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. >> > >> > >> > >Define "much superior”? >> >> What the user expects. True native touch UI. Responsive and fast. >> >> > >> > >Don't forget QML, which I think is the bee's knees. And then you have >> > > one codebase for iOS and Android and Desktop, which to me is vastly >> > > superior. >> >> Does QML have a numeric picker wheel ui element? > > >>Since Qt 5.5 Tumbler is free. > > > I just built and ran the Qt Quick Enterprise Controls and I saw tumbler. I > am glad it is free for others to use too. > > The PieMenu looked great too. > > > >Anyhow writing one in QML is quite easy using a PathView. Here is a > component > > > That was one of my concerns about QML. Initially it looks like you could > only use what Qt had created for you, If something like a tumbler did not > exist I assumed you were out-of-luck. I need to research PathView and what > it takes to create a new custom control. > > > >> >> I have wanted to try creating UI elements in QML then display them in a >> widget from my C++ Qt widget app. I do not know if this is possible; >> launching a QML ui then and receiving what the user selects from the QML UI. >> It may be worth the effort. > > >> >> If I could mix some QML with my widget app it could be a better solution >> compared to writing (and maintaining) two (2) native UI numeric pickers, one >> for Android, and one for iOS. >> >> >> So far I have one Qt widget codebase supporting Android, iOS, Linux, OS X, >> and Windows desktops except for a few things like Bluetooth, sending email, >> UIAlertView ( QMessageBox looks terrible on iOS ) and such. If I start >> adding native UI interfaces for Android and iOS I start to lose benefits of >> Qt. > > >>Mixing Qt Widget and QML is possible. Look at this blogpost. > > > I just ran across that example. It worked once I put the QML file into a > resource. However that example does not interact with C++. I was hoping to > find an example that would demonstrate how I could read the QML state from > C++ ( or visa versa ). > > I assume ta QML toggle button could raise a toggled signal that a C++ > handler could react to? > > Or C++ could change the state of the QML toggle button?
See: * http://doc.qt.io/qt-5/signalsandslots-syntaxes.html#connecting-c-objects-to-qml-objects * http://doc.qt.io/qt-5/qtqml-cppintegration-topic.html Regards, Sze-Howe _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
