Build error with the plgin about device_calendar

[pneves001]

I didn't even add any code yet. That was me just including the plugin into the project.

[MaikuB]

There's a general issue with Flutter consuming plugins developed in Swift within an Objective-C iOS project, which I assume is the scenario here as well. A link has been added to the readme with a link to the issue being tracked by the Flutter team. You may need to consider converting the iOS side of your project into Swift

[pneves001]

Well, I definitely have Objective C Plugins that are working in my project but the work I do is primarily in dart. I'm not sure I have swift alternatives for all of them though.

[MaikuB]

From what I recall, Objective-C plugins should work fine within a Swift project. It's more of an issue when it's the other way around. The plugins and your project don't necessarily need to be the same language

[adamwoodster]

Just for anyone checking this in the future (like me), I fixed this issue by making sure 'use_frameworks!' was in the Podfile.