如何根据不同的网址在AppBar中显示不同的开头？

Question

如何根据不同的URL在leading中显示不同的AppBar小部件？

Answer 1

@override
Widget build(BuildContext context) {
  Widget widget;

  switch (url) {
    case "url_1":
      widget = Widget1();
      break;

    case "url_2":
      widget = Widget2();
      break;

    case "url_3":
      widget = Widget3();
      break;

    default:
      widget = DefaultWidget();
  }

  return Scaffold(
    appBar: AppBar(leading: widget),
  );
}

Answer 2

CopsOnRoad答案不错，但是如果您需要从构建配置中获取网址，请查看https://flutter.dev/docs/deployment/flavors