How to Add Divider Between Each Line in Flutter??

· 6 min read
How to Add Divider Between Each Line in a Flutter
How to Add Divider Between Each Line in a Flutter

ListView Widget is one of the important widget types that can be used anywhere to bind data. So in this article, we will go through How to Add Divider Between Each Line in Flutter.

How to Add Divider Between Each Line in Flutter ??

For a short static list, you could also try with the below code snippet.

ListView(
  children: ListTile.divideTiles( //          <-- ListTile.divideTiles
      context: context,
      tiles: [
        ListTile(
          title: Text('Horse'),
        ),
        ListTile(
          title: Text('Cow'),
        ),
        ListTile(
          title: Text('Camel'),
        ),
        ListTile(
          title: Text('Sheep'),
        ),
        ListTile(
          title: Text('Goat'),
        ),
      ]
  ).toList(),
)

We will get a result like the below:

Divider in a flutter
Divider in a flutter

For a long dynamic list

Use ListView.separated will have a code snippet like a below:

ListView.separated(
  itemCount: 100,
  itemBuilder: (context, index) {
    return ListTile(
      title: Text('$index sheep'),
    );
  },
  separatorBuilder: (context, index) {
    return Divider();
  },
)

This returns two widgets for every item, except for the last item. The separatorBuilder is used to add the divider.

List with a Divider Flutter
List with a Divider Flutter

Create a custom item widget that uses a Divider or BoxDecoration.

Using Divider

final items = ['Horse', 'Cow', 'Camel', 'Sheep', 'Goat'];

@override
Widget build(BuildContext context) {
  return ListView.builder(
    itemCount: items.length,
    itemBuilder: (context, index) {
      return Column(
        children: <Widget>[
          ListTile(
            title: Text(items[index]),
          ),
          Divider(), //                           <-- Divider
        ],
      );
    },
  );
}

We will get output like a below:

listview with divider
listview with divider

Using BoxDecoration

Code Snippet will look like the below:

final items = ['Horse', 'Cow', 'Camel', 'Sheep', 'Goat'];

@override
Widget build(BuildContext context) {
  return ListView.builder(
    itemCount: items.length,
    itemBuilder: (context, index) {
      return Container(
        decoration: BoxDecoration( //                    <-- BoxDecoration
          border: Border(bottom: BorderSide()),
        ),
        child: ListTile(
          title: Text(items[index]),
        ),
      );
    },
  );
}

We will get output like a below:

Both Divider and BoxDecoration are customizable as far as the line height and color go. The divider also has an indent option, but you could get a BoxDecoration to do the same thing with some padding.

For more style

Use a Card code snippet will look like the below:

final items = ['Horse', 'Cow', 'Camel', 'Sheep', 'Goat'];

@override
Widget build(BuildContext context) {
  return ListView.builder(
    itemCount: items.length,
    itemBuilder: (context, index) {
      return Card( //                           <-- Card
        child: ListTile(
          title: Text(items[index]),
        ),
      );
    },
  );
}

The above code will give us output like a below:

listview with a card
listview with a card

The most correct way to do this is to use ListView.separated

ListView.separated(
     itemCount: 25,
     separatorBuilder: (BuildContext context, int index) => Divider(height: 1),
     itemBuilder: (BuildContext context, int index) {
       return ListTile(
         title: Text('item $index'),
       );
     },
);

Put your widget inside a container with BoxDecoration as

Container(
   child: YourWidgetHere(),
   decoration: BoxDecoration(
      border: Border(bottom: BorderSide(color: Colors.black26))),
);

On the flutter getting started tutorial it is covered, the solution they provide is something like this:

body: ListView.builder(
  itemCount: _kittens.length,
  itemExtent: 60.0,
  itemBuilder: (context, i) {
      // Add a one-pixel-high divider widget before each row in theListView.
      if (i.isOdd) return new Divider(color: Colors.purple); // notice color is added to style divider

      return _listItemBuilder();
    },
),
...

You can also add a Divider Widget like:

Column(
          children: <Widget>[
            Container(
              padding: EdgeInsets.all(16.0),
              child: Column(
                children: <Widget>[
                  Image.network(video["imageUrl"]),
                  Container(
                    height: 6.0,
                  ),
                  Text(
                    video["name"],
                    textScaleFactor: 1.05,
                    style: TextStyle(fontWeight: FontWeight.bold),
                  ),
                ],
              ),
            ),
            Divider(
              color: Theme.of(context).primaryColor,
            )
          ],
        );

You can also use

ListTile(
       leading: Icon(Icons.home),
       title: Text('Home'),
),
Container(height: 1, color: Colors.grey), //divider
ListTile(
       leading: Icon(Icons.logout),
       title: Text('Logout'),
),

Dart 2.3

Another way, especially for generic non-list-view: Using for in a Collection with the … spread operator

Column(
   children: [
     for(var i=0; i<4; i+=1)
     ...[Container(height: 100, width: 100),
         Divider()
      ]])

Conclusion:

Thanks for being with us on a Flutter Journey!!!

In this article, we have been through how to add a divider between each line in a flutter.

Keep Learning !!! Keep Fluttering !!!

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