change image color in TabBar Flutter

user_2882839 0
Viewed 30

When clicking on the image they change color, it just doesn't change if you drag with your finger, could someone help me with the icons change color when the user also wants to drag with the finger, this below is the code.

                SliverOverlapAbsorber(
                        handle: NestedScrollView.sliverOverlapAbsorberHandleFor(
                            context),
                        sliver: SliverAppBar(
                          pinned: true,
                          floating: true,
                          automaticallyImplyLeading: false,
                          forceElevated: innerBoxIsScrolled,
                          bottom: TabBar(
                            onTap: (value) {
                              WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
                                setState(() {
                                  index=value;
                                });
                              });
                            },
                            tabs: [
                              Tab(
                                icon: SizedBox(
                                  height: 25,
                                  child: Image.asset(
                                    AppImages.fix,
                                    color:
                                        index == 0 ? Colors.white : Colors.blue,
                                  ),
                                ),
                              ),
                              Tab(
                                icon: SizedBox(
                                  height: 25,
                                  child: Image.asset(
                                    AppImages.home,
                                    color:
                                        index == 1 ? Colors.white : Colors.blue,
                                  ),
                                ),
                              ),
                            ],
                          ),
                        ),
                      ),

enter image description here

flutter
2 Answers
user_85392780 
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
 
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: DefaultTabController(
        length: 2,
        child: Builder(
          builder: (context) {
            final TabController tabController =
                DefaultTabController.of(context)!;
            tabController.addListener(() {
              if (!tabController.indexIsChanging) {
                setState(() {});
              }
            });
            return NestedScrollView(
              headerSliverBuilder: (context, innerBoxIsScrolled) {
                return [
                  SliverOverlapAbsorber(
                    handle: NestedScrollView.sliverOverlapAbsorberHandleFor(
                        context),
                    sliver: SliverAppBar(
                      pinned: true,
                      floating: true,
                      automaticallyImplyLeading: false,
                      forceElevated: innerBoxIsScrolled,
                      bottom: TabBar(tabs: [
                        Tab(
                          icon: Icon(
                            Icons.home,
                            color: tabController.index == 0
                                ? Colors.red
                                : Colors.white,
                          ),
                        ),
                        Tab(
                          icon: Icon(
                            Icons.light,
                            color: tabController.index == 1
                                ? Colors.red
                                : Colors.white,
                          ),
                        ),
                      ]),
                    ),
                  )
                ];
              },
              body: TabBarView(
                controller: tabController,
                children: const [
                  Center(
                    child: Text('page 1'),
                  ),
                  Center(
                    child: Text('page 2'),
                  ),
                ],
              ),
            );
          },
        ),
      ),
    );
  }
}

A friend of mine helped me

user_28828390
Related