gird view demo

girdview.txt

new GridView.builder(
          itemCount: 5,
          gridDelegate:
          new SliverGridDelegateWithFixedCrossAxisCount(
              crossAxisCount: 3),
          itemBuilder: (BuildContext context, int index) {
            return new GestureDetector(
              child: new Card(
                elevation: 5.0,
                child: new Container(
                  alignment: Alignment.center,
                  child: new Text('Item $index'),
                ),
              ),
              onTap: () {
                showDialog(
                    context: context,
                    barrierDismissible: false,
                    child: new CupertinoAlertDialog(
                      title: new Column(
                        children: <Widget>[
                          new Text("Girdview"),
                          new Icon(
                            Icons.favorite,
                            color: Colors.green,
                          )
                        ],
                      ),
                      content: new Text("Selected Item $index"),
                      actions: <Widget>[
                        new FlatButton(onPressed: () {
                          Navigator.of(context).pop();
                        },
                            child: new Text("OK")
                        )
                      ],
                    )
                );
              },
            );
          }
      ),