griddelegate flutter code example

Example 1: gridview flutter

GridView.count(
  // Create a grid with 2 columns. If you change the scrollDirection to
  // horizontal, this produces 2 rows.
  crossAxisCount: 2,
  // Generate 100 widgets that display their index in the List.
  children: List.generate(100, (index) {
    return Center(
      child: Text(
        'Item $index',
        style: Theme.of(context).textTheme.headline5,
      ),
    );
  }),
);

Example 2: grid view in flutter

CustomScrollView(
  primary: false,
  slivers: <Widget>[
    SliverPadding(
      padding: const EdgeInsets.all(20),
      sliver: SliverGrid.count(
        crossAxisSpacing: 10,
        mainAxisSpacing: 10,
        crossAxisCount: 2,
        children: <Widget>[
          Container(
            padding: const EdgeInsets.all(8),
            child: const Text("He'd have you all unravel at the"),
            color: Colors.green[100],
          ),
          Container(
            padding: const EdgeInsets.all(8),
            child: const Text('Heed not the rabble'),
            color: Colors.green[200],
          ),
          Container(
            padding: const EdgeInsets.all(8),
            child: const Text('Sound of screams but the'),
            color: Colors.green[300],
          ),
          Container(
            padding: const EdgeInsets.all(8),
            child: const Text('Who scream'),
            color: Colors.green[400],
          ),
          Container(
            padding: const EdgeInsets.all(8),
            child: const Text('Revolution is coming...'),
            color: Colors.green[500],
          ),
          Container(
            padding: const EdgeInsets.all(8),
            child: const Text('Revolution, they...'),
            color: Colors.green[600],
          ),
        ],
      ),
    ),
  ],
)

Example 3: gridview in alerdialoge flutter

Future<Null> _neverSatisfied() async {
  return showDialog<Null>(
    context: context,
    barrierDismissible: false, // user must tap button!
    child: new AlertDialog(
      contentPadding: const EdgeInsets.all(10.0),
      title: new Text(
        'SAVED !!!',
        style:
        new TextStyle(fontWeight: FontWeight.bold, color: Colors.black),
      ),
      content: new Container(
        // Specify some width
        width: MediaQuery.of(context).size.width * .7,
        child: new GridView.count(
            crossAxisCount: 4,
            childAspectRatio: 1.0,
            padding: const EdgeInsets.all(4.0),
            mainAxisSpacing: 4.0,
            crossAxisSpacing: 4.0,
            children: <String>[
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
              'http://www.for-example.org/img/main/forexamplelogo.png',
            ].map((String url) {
              return new GridTile(
                  child: new Image.network(url, fit: BoxFit.cover, width: 12.0, height: 12.0,));
            }).toList()),
      ),
      actions: <Widget>[
        new IconButton(
            splashColor: Colors.green,
            icon: new Icon(
              Icons.done,
              color: Colors.blue,
            ),
            onPressed: () {
              Navigator.of(context).pop();
            })
      ],
    ),
  );
}