example-function.dart

ListView.builder(
              itemCount: movies.length,
              itemBuilder: (BuildContext context, int index) {
                return Dismissible(
                  onDismissed: (DismissDirection direction) {
                    if (direction == DismissDirection.endToStart) {
                      setState(() {
                        movies.removeAt(index);
                      });
                    }
                  },
                  secondaryBackground: Container(
                    child: Center(
                      child: Text(
                        'Delete',
                        style: TextStyle(color: Colors.white),
                      ),
                    ),
                    color: Colors.red,
                  ),
                  background: Container(),
                  child: MovieCard(movie: movies[index]),
                  key: UniqueKey(),
                );
              },
            )