title: Flutter Single Statefullwidget with multiple State
body: <p>I wanna ask your opinion about this one…</p>
  
  <p>when creating a statefull widget, we need to create a state for it. and this is tiresome when I need to have multiple widgets that changes….
  I wanna create it more simpler way bu creating only one Statefullwidget, but with multiple State….
  basically like this:</p>
  
  <pre><code>class MyWidget extends StatefullWidget {
      final State&lt;MyWidget&gt; state;
      MyWidget({this.state});
  }
  
  abstract MyStatefull extends State&lt;MyWidget&gt; {
  }
  </code></pre>
  
  <p>Then every statefullwidget that I wanna create is extending this <code>MyStatefull</code> class….</p>
  
  <p>Is this a good approach? and if there are some flaw in it, please kindly tell me…. 
  Thanks…</p>