---
title: WKApplicationRefreshBackgroundTask
framework: watchkit
role: symbol
role_heading: Class
path: watchkit/wkapplicationrefreshbackgroundtask
---

# WKApplicationRefreshBackgroundTask

A task that updates your app’s state in the background.

## Declaration

```swift
class WKApplicationRefreshBackgroundTask
```

## Mentioned in

Using background tasks

## Overview

Overview Don’t subclass or create instances of this class. Instead, schedule a background app refresh task by calling scheduleBackgroundRefresh(withPreferredDate:userInfo:scheduledCompletion:). When the system triggers the background task, it launches your app in the background, instantiates a WKApplicationRefreshBackgroundTask object, and passes the task object to your app delegate’s handle(_:) method. note: In watchOS 9 and later, SwiftUI Background tasks are the preferred way to handle background tasks and interactions. For more information, backgroundTask(_:action:). The system budgets the number of background refresh tasks available to an app. In general, the system performs approximately four tasks per hour for each app with a complication on the active watch face. All the complications on the current watch face share this budget. After you exhaust the budget, the system delays your requests until more time becomes available.

## Relationships

### Inherits From

- [WKRefreshBackgroundTask](watchkit/wkrefreshbackgroundtask.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Background tasks

- [Using background tasks](watchkit/using-background-tasks.md)
- [Preparing to take your watchOS app’s snapshot](watchkit/preparing-to-take-your-watchos-app-s-snapshot.md)
- [WKURLSessionRefreshBackgroundTask](watchkit/wkurlsessionrefreshbackgroundtask.md)
- [WKWatchConnectivityRefreshBackgroundTask](watchkit/wkwatchconnectivityrefreshbackgroundtask.md)
- [WKBluetoothAlertRefreshBackgroundTask](watchkit/wkbluetoothalertrefreshbackgroundtask.md)
- [WKIntentDidRunRefreshBackgroundTask](watchkit/wkintentdidrunrefreshbackgroundtask.md)
- [WKRelevantShortcutRefreshBackgroundTask](watchkit/wkrelevantshortcutrefreshbackgroundtask.md)
- [WKSnapshotRefreshBackgroundTask](watchkit/wksnapshotrefreshbackgroundtask.md)
- [WKRefreshBackgroundTask](watchkit/wkrefreshbackgroundtask.md)