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# DeviceActivityData.CategoryActivity

Categorized representation of application and web domain activity.

```
struct CategoryActivity
```

## Topics

### Identifying the category

[`var category: ActivityCategory`](/documentation/DeviceActivity/DeviceActivityData/CategoryActivity/category)

Access the category of the activity.

### Measuring activity

[`var totalActivityDuration: TimeInterval`](/documentation/DeviceActivity/DeviceActivityData/CategoryActivity/totalActivityDuration)

Access the total activity time for this category.

### Accessing contributing activities

[`var applications: DeviceActivityResults<DeviceActivityData.ApplicationActivity>`](/documentation/DeviceActivity/DeviceActivityData/CategoryActivity/applications)

Access the application activity that contributed to this category’s total activity time.

[`var webDomains: DeviceActivityResults<DeviceActivityData.WebDomainActivity>`](/documentation/DeviceActivity/DeviceActivityData/CategoryActivity/webDomains)

Access the web domain activity that contributed to this category’s total activity time.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

---

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