title: how i can click item in staggered gridview in flutter
body: <p>How can I click item in <code>StaggeredGridView</code> in Flutter?
  I want to add <code>Navigator</code> and send link photo to another screen.</p>
  <pre><code>import 'package:flutter/cupertino.dart';
  import 'package:flutter/material.dart';
  import 'package:flutter_staggered_grid_view/flutter_staggered_grid_view.dart';
  
  void main() {
    runApp(MyApp());
  }
  
  class MyApp extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      return MaterialApp(
        title: &quot;Flutter Staggered View&quot;,
        home: MyHome(),
      );
    }
  }
  
  class MyHome extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      return Scaffold(
        body: Container(
          child: StaggeredGridView.countBuilder(
            crossAxisCount: 4,
            itemCount: 15,
            itemBuilder: (BuildContext context, int index) =&gt; new Container(
              height: 120.0,
              width: 120.0,
              decoration: BoxDecoration(
                image: DecorationImage(
                  image: NetworkImage('https://picsum.photos/500/500?random=$index')  ,
  
                  fit: BoxFit.fill,
                ),
                shape: BoxShape.rectangle,
              ),
            ),
            staggeredTileBuilder: (int index) =&gt;
            new StaggeredTile.count(2, index.isEven ? 3 : 2),
            mainAxisSpacing: 4.0,
            crossAxisSpacing: 4.0,
  
          ),
        ),
      );
    }
  }
  </code></pre>