Adding tab labels to TabView in Flutter

Question

I'm trying to extend the TabView proposed as an answer here.

Specifically, instead of the grey dots, I would like to have category labels, and load as a tab content a widget corresponding to that category.

I tried following the docs, but if I change something in the AppBar it just gives me a reendering error.

salihgueler · Accepted Answer · 2018-07-02 10:22:01Z

5

You can achieve what you wanted via DefaultTabController widget. You can see the example here with only the icons. And here is the modified version of it with titles. TabBar part is for the tab and it's specifications. TabBarView is for the interior view.

class TabBarDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: DefaultTabController(
        length: 3,
        child: Scaffold(
          appBar: AppBar(
            bottom: TabBar(
              tabs: [
                Tab(icon: Icon(Icons.directions_car), text: "Car",),
                Tab(icon: Icon(Icons.directions_transit), text: "Transit"),
                Tab(icon: Icon(Icons.directions_bike), text: "Bike",),
              ],
            ),
            title: Text('Tabs Demo'),
          ),
          body: TabBarView(
            children: [
              Icon(Icons.directions_car),
              Icon(Icons.directions_transit),
              Icon(Icons.directions_bike),
            ],
          ),
        ),
      ),
    );
  }
}

If you use the code above, you would be getting a 3 tabbed tab view with the explanatory text.

EDIT:

//Call the widget as follows
new TabBarDemo(createTabsDynamically());

//method to use for dynamic creation.
List<Tab> createTabsDynamically() {

    List<String> titles = ["Car", "Transit", "Bike"];
    List<IconData> iconData = [Icons.directions_car, Icons.directions_transit, Icons.directions_bike];
    List<Tab> tabs = new List();
    // Assuming titles and icons have the same length
    for (int i = 0; i< titles.length; i++) {
      tabs.add(Tab(icon: Icon(iconData[i]), text: titles[i],));
    }

    return tabs;
}

class TabBarDemo extends StatelessWidget {

  List<Tab> tabs;
  TabBarDemo(this.tabs);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: DefaultTabController(
        length: 3,
        child: Scaffold(
          appBar: AppBar(
            bottom: TabBar(
              tabs: tabs,
            ),
            title: Text('Tabs Demo'),
          ),
          body: TabBarView(
            children: [
              Icon(Icons.directions_car),
              Icon(Icons.directions_transit),
              Icon(Icons.directions_bike),
            ],
          ),
        ),
      ),
    );
  }
}

edited Jul 2, 2018 at 10:22

answered Jul 1, 2018 at 17:07

salihgueler

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2 Comments

doramcquack Over a year ago

Thank you for the answer. How can i do it dynamically? I have a variable Number of categories so for each category i Need a Tab.

salihgueler Over a year ago

First you can create your tabs according to your values, then you can pass it with constructor. I edited my code so you can have an idea about it.

Sunil · Accepted Answer · 2018-07-01 18:01:00Z

0

You can achieve what you wanted via TabController widget. I found a simple example of TabBar here.

answered Jul 1, 2018 at 18:01

Sunil

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