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| # requestFocus method |
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| *[<Null safety>](https://dart.dev/null-safety)* |
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| - @override |
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| Future<void> requestFocus |
| ([int _ = 0]) |
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| _<span class="feature override">override</span>_ |
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| <p>Requests that focus be transferred to the remote Scene represented by |
| this connection. This method is the point at which focus handling for |
| flatland diverges. In Flatland, the Flutter engine holds the ViewRef |
| and does not provide it to dart code, so we must refer to the child |
| view by viewId instead</p> |
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| ## Implementation |
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| ```dart |
| @override |
| Future<void> requestFocus([int _ = 0]) async { |
| if (useFlatland) { |
| return super.requestFocusById(viewId); |
| } else { |
| assert(viewRef?.reference != null && _ == 0); |
| return super.requestFocus(viewRef!.reference.handle!.handle); |
| } |
| } |
| ``` |
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