自定义AppBar 元素类型'List<dynamic>'无法赋值给列表类型

Question

class BottomOfAppBar extends StatelessWidget implements PreferredSizeWidget {
  BottomOfAppBar({Key? key, required this.tabs}) : super(key: key);
  List tabs;
  @override
  Widget build(BuildContext context) {
    return Obx(() => Container(
          child: ColoredBox(
            color: Colors.white,
            child: Column(
              children: [
                widget.tabbarenable
                    ? TabBar(
                        labelColor: Colors.purple[100],
                        indicatorColor: Colors.purple,
                        isScrollable: true,
                        labelPadding:
                            const EdgeInsets.symmetric(horizontal: 8.0),
                        tabs: <Widget>[tabs])
                    : Container()
              ],
            ),
          ),
        ));
  }

  @override
  Size get preferredSize => const Size.fromHeight(55.0);
}

您好，

我正在尝试在 customAppBar class 中使用选项卡变量，但出现此错误。制表符：制表符行给出此错误。

任何帮助

Answer 1

将 List tabs; 替换为 List<Widget> tabs; 并提供选项卡，例如 tabs: tabs,

 TabBar(
      labelColor: Colors.purple[100],
      indicatorColor: Colors.purple,
      isScrollable: true,
      labelPadding: const EdgeInsets.symmetric(horizontal: 8.0),
      tabs: tabs,
    );

它能解决您的问题吗？

自定义AppBar 元素类型'List<dynamic>'无法赋值给列表类型

custom AppBar The element type 'List<dynamic>' can't be assigned to the list type

flutter

dart

flutter-getx