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swiftmacosmacos-mojave

How to find out which version of API is available for a certain OSX version?

I want to retrieve some meta data of a photo asset in the Photo library. Basically the name, type and location of it. I want to implement it as a command line utility in Swift.

Here is the code I have come up with

var allPhotos : PHFetchResult<PHAsset>? = nil
let fetchOptions = PHFetchOptions()
allPhotos = PHAsset.fetchAssets(with: .image, options: fetchOptions)

But it fails to compile because of 'fetchAssets(with:options:)' is only available in macOS 10.15 or newer.

My app is targeted to run on 10.14 and my MBP is still running 10.14.

When I check the documentation page (https://developer.apple.com/documentation/photokit/phasset),

I can't find the os version information next to each API on the page.

enter image description here

What is the easiest way to find such information?

Also how can I make the code work for 10.14?

Solution

  • macOS Version Requirements

    What is the easiest way to find such information?

    It says on the page that 10.15+ is required:

    enter image description here

    Alternatives

    Also how can I make the code work for 10.14?

    Use fetchAssets(in:options:) (min 10.13) instead of fetchAssets(with:options:) (min 10.15).