[Interest] vs. Flutter

Jereme Givens- Lamothe jereme.lamothe at qt.io
Tue Feb 19 16:50:03 CET 2019

Does something like the (recently rebranded) Felgo address any of your concerns about mobile development w/ Qt? They used to call the product "V-Play", but wanted to market it for use in regular apps (non-games) as well. I haven't used it myself, but they seem to handle QML live-reload and notifications. 


From: Interest <interest-bounces at qt-project.org> on behalf of Jason H <jhihn at gmx.com>
Sent: Tuesday, February 19, 2019 10:25 AM
To: "René Hansen"
Cc: interest at lists.qt-project.org
Subject: Re: [Interest] vs. Flutter
Many thanks for all those who replied.

> I've not come across any myself, and have only built a few small things with it a bit for now.
> Initial reactions was that it is *leagues* ahead of Qt with regards to developer experience. You're not locked to an IDE, like with QtCreator, and the ui live updates across device, simulators, emulators etc. when you write changes. No need to build and .apk and wait for a build+deploy.

What if there was a way to stand up a QmlEngine, host it on a phone, then start the app and then ship the QML over to it, then when a new version is ready, reset the engine and reload? This doesn't seem like anything that would be really hard to add to Qt/QtCreator?

> There's no JS involved. It's Dart all the way. It doesn't even ship with a web runtime afaik.
> Achitecturally it's similar to Qt, in that they've build a custom renderer on top of Skia, so the whole scene is basically just OpenGL, which makes it really fast.
> Component wise, their UI library offers bother Cupertino and Material design out of the box, and from initial impressions, looks to be closer to the original design guidelines than Qt Quick Controls for. e.g. Material.

This doesn't sound like anything we can't have either?

> I haven't tried it out myself yet, but you should be able to reach into native world by using platform channels:
> https://flutter.io/docs/development/platform-integration/platform-channels
> It's seems like it's quite a ways worse than with Qt though, so there's at least that.

Well, Qt on Mobile is relatively abysmal. There is a much higher lack of parity than anywhere else. The recent Developer Survey gave me some hope though: 10% embedded 20% mobile. This was suggested to being some much needed love to Mobile. I will say that my commercial support seems to trigger the fixing of those issues pretty quickly. So it's not being ignored. One of my chief frustrations with the Qt Project as a whole is lack of a roadmap.

Things that need attention in 2015 (yeah long overdue)
* Notifications API (Desktop, Mobile)
* Multimedia platform parity with each other and desktop.
* Device support APIs (display brightness, volume, etc)

All those things still need attention in 2019.

I don't know how flutter runs on Windows or embedded hardware though. Maybe all you need is ASOP?

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