[iOS] Share to Zulip from other apps

[gnprice]

This is the iOS side of the feature where from some other app on the device, when you say to "share" something, you get a system-provided bit of UI that lets you choose from various apps you can share the thing to. We should make Zulip one of the options there. In other words, provide an iOS "share extension".

• iOS docs: share extensions, and for messaging apps adding conversation suggestions.
• See also this Medium post that refreshingly isn’t just walking through a library’s setup instructions; it goes through building this functionality more directly.

References

• Design thread: #mobile-design > share to Zulip @ 💬
• Android counterpart: [Android] Share to Zulip from other apps #53
• Old umbrella issue for iOS and Android: Share to Zulip from other apps #52
• Old feature request for the legacy RN app (which never gained this feature): Handle sharing from other apps (iOS) zulip-mobile#3277

[gnprice]

Requested by a user at #52 (comment) and later #52 (comment) :

I would like to provide a short context from a corporate environment. We are trying to have people use Zulip for instant internal communication opposed to slower methods as e-mail and anti-privacy methods such as Meta-products. Now that a sharing button is missing, people are falling back to the less preferred methods. System sharing menus to get files into Zulip are very appreciated and are in line with Zulip's operating area of keeping privacy in own hands. Hope to see it available soon. :)

Thank you for your work on the Android platform. Very much appreciated by me and colleagues.

I hope iOS follows soon.