---
title: "launchApplication(withBundleIdentifier:options:additionalEventParamDescriptor:launchIdentifier:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nsworkspace/launchapplication(withbundleidentifier:options:additionaleventparamdescriptor:launchidentifier:)"
---

# launchApplication(withBundleIdentifier:options:additionalEventParamDescriptor:launchIdentifier:)

Launches the app corresponding to the specified bundleIdentifier.

## Declaration

```swift
func launchApplication(withBundleIdentifier bundleIdentifier: String, options: NSWorkspace.LaunchOptions = [], additionalEventParamDescriptor descriptor: NSAppleEventDescriptor?, launchIdentifier identifier: AutoreleasingUnsafeMutablePointer<NSNumber?>?) -> Bool
```

## Parameters

- `bundleIdentifier`: A bundle identifier string. This value corresponds to the value in the CFBundleIdentifier key of the app’s Info.plist file. For example, the bundle identifier of the TextEdit app is com.apple.TextEdit.
- `options`: Options to use when launching the app. Values for this parameter are described in doc://com.apple.appkit/documentation/AppKit/NSWorkspace/LaunchOptions.
- `descriptor`: Additional options specified in an AppleEvent-style descriptor. For example, you could use this parameter to specify additional documents to open when the app is launched.
- `identifier`: The launchIdentifiers are currently unused, and you should pass NULL.

## Return Value

Return Value true if the app was found and launched; otherwise, false.

## Discussion

Discussion It is safe to call this method from any thread of your app.

## See Also

### Methods

- [open(_:options:configuration:)](appkit/nsworkspace/open(_:options:configuration:).md)
- [open(_:withApplicationAt:options:configuration:)](appkit/nsworkspace/open(_:withapplicationat:options:configuration:).md)
- [openFile(_:)](appkit/nsworkspace/openfile(_:).md)
- [openFile(_:withApplication:)](appkit/nsworkspace/openfile(_:withapplication:).md)
- [openFile(_:withApplication:andDeactivate:)](appkit/nsworkspace/openfile(_:withapplication:anddeactivate:).md)
- [openFile(_:from:at:in:)](appkit/nsworkspace/openfile(_:from:at:in:).md)
- [launchApplication(_:)](appkit/nsworkspace/launchapplication(_:).md)
- [launchApplication(_:showIcon:autolaunch:)](appkit/nsworkspace/launchapplication(_:showicon:autolaunch:).md)
- [launchApplication(at:options:configuration:)](appkit/nsworkspace/launchapplication(at:options:configuration:).md)
- [performFileOperation(_:source:destination:files:tag:)](appkit/nsworkspace/performfileoperation(_:source:destination:files:tag:).md)
- [fullPath(forApplication:)](appkit/nsworkspace/fullpath(forapplication:).md)
- [absolutePathForApplication(withBundleIdentifier:)](appkit/nsworkspace/absolutepathforapplication(withbundleidentifier:).md)
- [open(_:withAppBundleIdentifier:options:additionalEventParamDescriptor:launchIdentifiers:)](appkit/nsworkspace/open(_:withappbundleidentifier:options:additionaleventparamdescriptor:launchidentifiers:).md)
- [mountedRemovableMedia()](appkit/nsworkspace/mountedremovablemedia().md)
- [mountedLocalVolumePaths()](appkit/nsworkspace/mountedlocalvolumepaths().md)