.dart

RaisedButton(
            key: keys[2],
            child: Text('Flare Giffy'),
            onPressed: () {
              showDialog(
                  context: context,
                  builder: (_) => FlareGiffyDialog(
                    key: keys[3],
                        flarePath: 'assets/space_demo.flr',
                        flareAnimation: 'loading',
                        title: Text(
                          "Planet Reloading",
                          style: TextStyle(
                            fontSize: 22.0,
                            fontWeight: FontWeight.bold,
                          ),
                        ),
                        description: Text(
                          'This is the PLanet Reloading Dialog Box. This will help you to understand Flare Giffy Animation',
                          textAlign: TextAlign.center,
                        ),
                        entryAnimation: EntryAnimation.TOP_LEFT,
                        onOkButtonPressed: (){},
                      ));
            },
          ),