如何更改 flutter 中的指示器顏色

Question

如圖所示，我的第一個標簽是綠色的

選項卡標題是彩色的，下划線不是

是否可以用相同顏色的green為標題下的線條着色？

child: TabBar(
                  onTap: (index) {
                    setState(() {
                      selectedIndex = index;
                    });
                  },
                  isScrollable: false,
                  padding: const EdgeInsets.symmetric(horizontal: 10),
                  controller: _tabController,
                  labelColor: getIndicatorAndLabelColor(selectedIndex),
                  unselectedLabelColor: Colors.black,
                  indicatorWeight: 4,
                  indicatorColor: getIndicatorAndLabelColor(selectedIndex),
                 indicatorPadding:
                      const EdgeInsets.only(left: 15, right: 15, bottom: 10),
                  indicator: const ShapeDecoration(
                      shape: UnderlineInputBorder(
                          borderSide: BorderSide(
                              color: myAccentColor,
                              width: 3,
                              style: BorderStyle.solid))),
                  tabs: const [
                    Tab(
                      text: 'APPROVED',
                    ),
                    Tab(
                      text: 'DENIED',
                    ),
                    Tab(
                      text: 'PENDING',
                    ),
                  ],
                ),

Answer 1

您可以使用indicatorColor將其設置為綠色。

TabBar(
  indicatorColor: Colors.green, //this one , you can remove `getIndicatorAndLabelColor`
  indicatorWeight: 4,
  indicatorPadding:
      const EdgeInsets.only(left: 15, right: 15, bottom: 10),
  tabs: <Widget>[

Answer 2

謝謝@Yeasin Sheikh，終於我找到了解決方案

        indicator: ShapeDecoration(
              shape: UnderlineInputBorder(
                borderSide: BorderSide(
                    color: Colors.green,
                    width: 3,
                    style: BorderStyle.solid),
              ),
            ),