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# applicationWillFinishLaunching(_:)

Tells the delegate that the app’s initialization is about to complete.

```
@MainActor optional func applicationWillFinishLaunching(_ notification: Notification)
```

## Parameters

`notification`

A notification named [`willFinishLaunchingNotification`](/documentation/AppKit/NSApplication/willFinishLaunchingNotification). Calling the <doc://com.apple.documentation/documentation/Foundation/NSNotification/object> method of this notification returns the `NSApplication` object itself.

## See Also

[`applicationWillBecomeActive(_:)`](/documentation/AppKit/NSApplicationDelegate/applicationWillBecomeActive(_:))

Tells the delegate that the app is about to become active.

[`finishLaunching()`](/documentation/AppKit/NSApplication/finishLaunching())

Activates the app, opens any files specified by the `NSOpen` user default, and unhighlights the app’s icon.

[`NSApplication`](/documentation/AppKit/NSApplication)

An object that manages an app’s main event loop and resources used by all of that app’s objects.


---

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