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# accessibilityZoomAction(_:)

Adds an accessibility zoom action to the view. Actions allow
assistive technologies, such as VoiceOver, to interact with the
view by invoking the action.

```
nonisolated func accessibilityZoomAction(_ handler: @escaping (AccessibilityZoomGestureAction) -> Void) -> ModifiedContent<Self, AccessibilityAttachmentModifier>
```

## Discussion

For example, this is how a zoom action is used to transform the scale
of a shape which has a `MagnificationGesture`.

```
var body: some View {
    Circle()
        .scaleEffect(magnifyBy)
        .gesture(magnification)
        .accessibilityLabel("Circle Magnifier")
        .accessibilityZoomAction { action in
            switch action.direction {
            case .zoomIn:
                magnifyBy += 0.5
            case .zoomOut:
                 magnifyBy -= 0.5
            }
        }
}
```

---

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