[Interest] Qt iOS and App Extensions

[Robert Iakobashvili]

Dear Nuno,
Whatever I did was completely decoupled from Qt.

Only XCode project - it was an app with its bundle and within an app
it was a sub-app bundle.

But there are many types of extensions.

So, starting from an example of your extension and extending
it could be the right path.

If you find you still have memory up to 30 MB, you can link
QtCore if it helps you.

Your business logic could be in C++ and Swift interface can talk back
and forth with C++ via an objective-C Bridge - even with debugging
going smoothly between the pieces.

Sorry for being not too much helpful with a Qt-path.
Kind regards,
Robert


On Sun, May 21, 2017 at 11:51 AM, Nuno Santos <nunosantos at imaginando.pt> wrote:
> Robert,
>
> Right now I’m more interested in how to put things together.
>
> Were you able to do it?
>
> Where are you coding the extension? With Qt Creator or Xcode?
>
> How are you setting the project?
>
> Can the app extension be deployed as a plugin? Like a .component? A dynamic
> library packed in a bundle?
>
> Because I have already done a AudioUnit in the past and I can make it with
> Qt using the following flags:
>
> CONFIG += lib_bundle shared
>
> The thing is that QtCreator doesn’t handle the packaging so I have to
> manually do everything.
>
> But as for App Extensions I don’t know exactly what they are. I have a Xcode
> example but with Xcode is always hard to decipher how things were made.
>
> Regards,
>
> Nuno
>
> On 21 May 2017, at 05:20, Robert Iakobashvili <coroberti at gmail.com> wrote:
>
> On Sat, May 20, 2017 at 7:54 PM, Nuno Santos <nunosantos at imaginando.pt>
> wrote:
>
> HI,
>
> I’m trying to develop an app extension for my Qt iOS app but I don’t know
> what kind of target it is.
>
> I always try to use Qt Creator to handle my Qt based projects. In case of
> iOS projects I try to use only Xcode to deployment and debug.
>
> Is an app extension a framework or a executable?
>
> As anyone tried this before?
>
> I want to know how to configure the app extension on Qt Creator .pro
>
> Regards,
>
> Nuno
>
>
> Hi Nuno,
> When doing it recently, it appears that there's a unpublished memory
> limit of up to 30 MB imposed by Apple that an extension is allowed.
>
> Initially, I was planning to use Swift interface with QtCore classes in my
> core logic connected by an Objective-C Bridge.
>
> However, due to the memory limitations, I've migrated from Qt to
> some C-written hash maps, etc containers with less pointers and less
> consumption of memory.
>
> Take care.
>
> Kind regards,
> Robert
>
>