f9/sdk/dart/package-fuchsia_scenic_flutter_fuchsia_view/FuchsiaViewConnection/FuchsiaViewConnection.md

# FuchsiaViewConnection constructor




    *[<Null safety>](https://dart.dev/null-safety)*



FuchsiaViewConnection(dynamic viewHolderToken, {dynamic viewRef, [FuchsiaViewConnectionCallback](../../package-fuchsia_scenic_flutter_fuchsia_view/FuchsiaViewConnectionCallback.md)? onViewConnected, [FuchsiaViewConnectionCallback](../../package-fuchsia_scenic_flutter_fuchsia_view/FuchsiaViewConnectionCallback.md)? onViewDisconnected, [FuchsiaViewConnectionStateCallback](../../package-fuchsia_scenic_flutter_fuchsia_view/FuchsiaViewConnectionStateCallback.md)? onViewStateChanged, bool usePointerInjection = false, bool usePointerInjection2 = false, bool useFlatland = false})


<p>Constructor.</p>



## Implementation

```dart
FuchsiaViewConnection(
  this.viewHolderToken, {
  this.viewRef,
  FuchsiaViewConnectionCallback? onViewConnected,
  FuchsiaViewConnectionCallback? onViewDisconnected,
  FuchsiaViewConnectionStateCallback? onViewStateChanged,
  this.usePointerInjection = false,
  this.usePointerInjection2 = false,
  this.useFlatland = false,
})  : assert(viewHolderToken!.value != null && viewHolderToken.value.isValid),
      assert(
          viewRef?.reference == null || viewRef!.reference.handle!.isValid),
      assert(!usePointerInjection || viewRef?.reference != null),
      assert(!usePointerInjection2 || viewRef?.reference != null),
      viewportCreationToken = null,
      _onViewConnected = onViewConnected,
      _onViewDisconnected = onViewDisconnected,
      _onViewStateChanged = onViewStateChanged,
      super(
        viewId: viewHolderToken!.value.handle!.handle,
        onViewConnected: _handleViewConnected,
        onViewDisconnected: _handleViewDisconnected,
        onViewStateChanged: _handleViewStateChanged,
        onPointerEvent: _handlePointerEvent,
      );
```