convertFlutterSurfaceToImage method
Android only. Converts the Flutter surface to an image view. Be aware that if you are conducting a perf test, you may not want to call this method since the this is an expensive operation that affects the rendering of a Flutter app.
Once the screenshot is taken, call revertFlutterImage()
to restore
the original Flutter surface.
Implementation
Future<void> convertFlutterSurfaceToImage() async {
await callbackManager.convertFlutterSurfaceToImage();
}