I tried

Text(Date.now, format:
                     .relative(presentation: .named))

and also tried

Text(Date.now, style: .relative)

But the first one just says "now" even after 24 hours

and the second one is literally just a timer so instead of saying after one minute "1 minute ago" it says "1 minute, 20 seconds" for example. There aren't a lot of resources out there for this particular thing, so help will be appreciated

CodePudding user response：

Relative format presents date relatively to "now", it does not track time, we have to provide date explicitly, like

Text(Date().addingTimeInterval(-60), format:
         .relative(presentation: .named))

rendered as

CodePudding user response：

The reason that your first one would stay saying "now", while the second one will update once a second is because:

• The first one simply converts the input data to a string when the Text view is first created.

• The second one is a initializer that is specialized for Date. It actually creates a publisher behind the scene, that will update the underlying text once a second. However, as you might have found out already, only a few DateStyle were supported.

One solution is to create your own Date wrapper class that conforms to ObservableObject:

class PublishedDate: ObservableObject {
    let date = Date.now

    /// Manually creating a publisher that will emits once a second
    var objectWillChange = Timer.publish(every: 1, on: .main, in:.common).autoconnect()
}

Now we can store our PublishedDate in the view as a @StateObject, and it will update relevant sub-views every time objectWillChange fires:

struct ContentView: View {
    @StateObject var date: PublishedDate = .init()
    var body: some View {
        VStack {
            Text(date.date.formatted(.relative(presentation: .named)))
        }
    }
}