Flutter标签页指示器样式定制插件 flutter_tab_indicator_styler 的使用

flutter_tab_indicator_styler 是一个用于自定义Flutter中TabBar指示器样式的插件。它支持多种风格的指示器，并且高度可定制，适用于Android、iOS和Web平台。

特性 💚

• 支持Android、iOS、Web
• 可直接添加到默认的TabBar中
• 提供三种不同的Tab指示器样式：DotIndicator、MaterialIndicator和RectangularIndicator
• 高度可定制

演示

样式

DotIndicator

DotIndicator(
  radius: 3,
  color: Colors.black,
  distanceFromCenter: 16,
  paintingStyle: PaintingStyle.fill,
)

MaterialIndicator

MaterialIndicator(
  height: 5,
  tabPosition: TabPosition.bottom,
  topRightRadius: 8,
  topLeftRadius: 8,
  horizontalPadding: 50,
  color: Colors.green,
)

RectangularIndicator

RectangularIndicator(
  bottomLeftRadius: 100,
  bottomRightRadius: 100,
  topLeftRadius: 100,
  topRightRadius: 100,
  color: Colors.black,
  paintingStyle: PaintingStyle.stroke,
)

如何使用

下面是一个完整的示例代码，展示了如何在项目中使用flutter_tab_indicator_styler：

import 'package:flutter/material.dart';
import 'package:flutter_tab_indicator_styler/flutter_tab_indicator_styler.dart';

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  final String title;

  [@override](/user/override)
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: DefaultTabController(
        length: 3,
        initialIndex: 0,
        child: Center(
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 16),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Text("Material Indicator: position bottom"),
                ),
                Material(
                  child: TabBar(
                    indicatorColor: Colors.green,
                    tabs: [
                      Tab(text: "Home"),
                      Tab(text: "Work"),
                      Tab(text: "Play"),
                    ],
                    labelColor: Colors.black,
                    indicator: MaterialIndicator(
                      height: 5,
                      topLeftRadius: 8,
                      topRightRadius: 8,
                      horizontalPadding: 50,
                      tabPosition: TabPosition.bottom,
                    ),
                  ),
                ),
                SizedBox(height: 16),
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Text("Dot Indicator"),
                ),
                Material(
                  child: TabBar(
                    indicatorColor: Colors.green,
                    tabs: [
                      Tab(text: "Home"),
                      Tab(text: "Work"),
                      Tab(text: "Play"),
                    ],
                    labelColor: Colors.black,
                    indicator: DotIndicator(
                      color: Colors.black,
                      distanceFromCenter: 16,
                      radius: 3,
                      paintingStyle: PaintingStyle.fill,
                    ),
                  ),
                ),
                SizedBox(height: 16),
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Text("Material Indicator: position top"),
                ),
                Material(
                  child: TabBar(
                    indicatorColor: Colors.green,
                    tabs: [
                      Tab(text: "Home"),
                      Tab(text: "Work"),
                      Tab(text: "Play"),
                    ],
                    labelColor: Colors.black,
                    indicatorSize: TabBarIndicatorSize.label,
                    indicator: MaterialIndicator(
                      height: 5,
                      topLeftRadius: 0,
                      topRightRadius: 0,
                      bottomLeftRadius: 5,
                      bottomRightRadius: 5,
                      tabPosition: TabPosition.top,
                    ),
                  ),
                ),
                SizedBox(height: 16),
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Text("RectangularIndicator Indicator: fill"),
                ),
                Material(
                  child: TabBar(
                    indicatorColor: Colors.green,
                    tabs: [
                      Tab(text: "Home"),
                      Tab(text: "Work"),
                      Tab(text: "Play"),
                    ],
                    labelColor: Colors.white,
                    unselectedLabelColor: Colors.black,
                    indicator: RectangularIndicator(
                      bottomLeftRadius: 100,
                      bottomRightRadius: 100,
                      topLeftRadius: 100,
                      topRightRadius: 100,
                    ),
                  ),
                ),
                SizedBox(height: 16),
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Text("RectangularIndicator Indicator: stroke"),
                ),
                TabBar(
                  indicatorColor: Colors.green,
                  tabs: [
                    Tab(text: "Home"),
                    Tab(text: "Work"),
                    Tab(text: "Play"),
                  ],
                  labelColor: Colors.black,
                  indicator: RectangularIndicator(
                    bottomLeftRadius: 100,
                    bottomRightRadius: 100,
                    topLeftRadius: 100,
                    topRightRadius: 100,
                    paintingStyle: PaintingStyle.stroke,
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}