Pass arguments in Navigator push Named route

 

For simple navigation with arguments from WidgetA to WidgetB

1. Define routes in MaterialApp main widget:

    return MaterialApp(
       routes: {
           '/routeAB': (context) => WidgetB(),
       },

2. In WidgetA use pushNamed method to navigate to WidgetB:

  onTap: () { 
     Navigator.pushNamed(context, '/routeAB', 
       arguments: {
          'arg1': val1,
          'arg2': val2,
          ...

3. Get arguments in WidgetB:

    Map args = ModalRoute.of(context).settings.arguments;