Introduction Flutt?r, th? op?n-sourc? UI fram?work d?v?lop?d by Googl?, has gain?d significant popularity for building nativ?ly compil?d applications across multipl? platforms from a singl? cod?bas?. On? of th? k?y str?ngths of Flutt?r is its ability to cr?at? custom widg?ts, ?nabling d?v?lop?rs to build highly r?usabl? and maintainabl? UI compo