How to prepare and use the database in a new project

[wzxu]

I'll be honest I'm a complete noob when it comes to iOS development and all the latest fancy Swift features.

I tried to check out the examples in Xcode previews, which worked okay, but when I did try to add the library into a brand new project, I'm completely lost at the very first step, just initializing the database and doing simple operations like in SwiftDataTemplateDemo.

Pretty sure the errors may be related to the Swift concurrency concept which I haven't got to look into yet, but can someone kindly tell me what's wrong and help me get around these errors? (I'm sure the fix will be ridiculously simple.)

I only have the most basic files right now, a Schema.swift:

And then the ContentView.swift:

Do I have to use a view model or something? But the original SwiftDataTemplateDemo also didn't use one…
Thanks!

[mbrandonw]

Hi @wzxu, can you share more details of your exact set up? What version of Xcode and Swift are you using?

If I had to guess, it would seem that you are using Xcode 26, which now defaults to using main actor isolation for new projects. This is a new feature of Swift 6.2, and in our opinion is still not fully baked and we are waiting for many bug fixes to be merged before we can evaluate how to adapt our library to properly handle it. So, in the meantime you should disable this feature, and then things should work correctly.

[wzxu]

Indeed I'm playing with Xcode 26 and iOS 26.
I found the option Default Actor Isolation and set it to nonisolated and now it compiles.
Thanks!

Guess I really have to read up on Swift concurrency though…