GridView Exampel

gridview.dart

import 'package:flutter/material.dart';

void main()=> runApp(tut_002());

class tut_002 extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primaryColor: Colors.blue,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: Text(
            "tut_002",
            style:TextStyle(
              color:Colors.white,
            )
          ),
        ),
        body: OrientationBuilder(
          builder: (context,orientation){
           return GridView.count(
             crossAxisCount: orientation==Orientation.portrait?2:3,
             crossAxisSpacing: 2,
             children: List.generate(6, (index){
               return Image.asset( 
                 "images/Beispiel$index.PNG",
                 width: 105.0,
                 height: 72.0,
               );
             }),
          );
          }),
      ),
    );
  }
}