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# UISelectionFeedbackGenerator

A concrete feedback generator subclass that creates haptics to indicate a change in selection.

```
@MainActor class UISelectionFeedbackGenerator
```

## Overview

Use selection feedback to communicate movement through a series of discrete values. For example, you might trigger selection feedback to indicate that a UI element’s values are changing.

The following code example shows how to play selection feedback in response to a long-press gesture.

```swift
var feedback = UISelectionFeedbackGenerator()

override func viewDidLoad() {
    super.viewDidLoad()
    
    // Create a selection feedback object and associate it with the view.
    feedback = UISelectionFeedbackGenerator(view: view)
    
    // Add a custom long-press gesture to the view.
    let longPressGesture = UILongPressGestureRecognizer(target: self, action: #selector(longPress(_:)))
    longPressGesture.numberOfTouchesRequired = 2
    view.addGestureRecognizer(longPressGesture)
}

@objc
private func longPress(_ sender: UILongPressGestureRecognizer) {
    if sender.state == .began {
        // Play selection feedback to indicate a selection change.
        feedback.selectionChanged(at: sender.location(in: view))
        
        // Update the UI in response to a selection change.
        // ...
    }
}
```

For more information, read <doc://com.apple.documentation/documentation/ApplePencil/playing-haptic-feedback-in-your-app>.

## Topics

### Reporting selection changes

[`selectionChanged()`](/documentation/UIKit/UISelectionFeedbackGenerator/selectionChanged())

Triggers selection feedback.

[`selectionChanged(at:)`](/documentation/UIKit/UISelectionFeedbackGenerator/selectionChanged(at:))

Triggers selection feedback at the specified location.


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