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  "identifier" : "/documentation/SwiftUI/View/interactionActivityTrackingTag(_:)",
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  "title" : "interactionActivityTrackingTag(_:)"
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# interactionActivityTrackingTag(_:)

Sets a tag that you use for tracking interactivity.

```
nonisolated func interactionActivityTrackingTag(_ tag: String) -> some View
```

## Parameters

`tag`

The tag used to track user interactions
hosted by this view as activities.

## Return Value

A view that uses a tracking tag.

## Discussion

The following example tracks the scrolling activity of a [`List`](/documentation/SwiftUI/List):

```
List {
    Section("Today") {
        ForEach(messageStore.today) { message in
            Text(message.title)
        }
    }
}
.interactionActivityTrackingTag("MessagesList")
```

The resolved activity tracking tag is additive, so using the
modifier across the view hierarchy builds the tag from top to
bottom. The example below shows a hierarchical usage of this
modifier with the resulting tag `Home-Feed`:

```
var body: some View {
    Home()
        .interactionActivityTrackingTag("Home")
}

struct Home: View {
    var body: some View {
        List {
            Text("A List Item")
            Text("A Second List Item")
            Text("A Third List Item")
        }
        .interactionActivityTrackingTag("Feed")
    }
}
```

---

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