我希望创建一个简单的应用程序，保持 bottomNavigationBar 不变，改变它的孩子。
我想 GetX 是实现它的最好和最简单的方法，但是，我面临一个意想不到的问题。
这是代码片段：
class Home extends StatelessWidget {
final NavController navController = Get.put(NavController());
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
//child: navController.bodyContent[navController.selectedIndex],
child: Obx(
// ignore: missing_return
() {
String _test =
navController.bodyContent[navController.selectedIndex];
print(_test);
return Profile(); //well, it's hardcoded but it works.
//I can realise my logic to change screens right here...
//... but I'm not sure it's good enough
//And I can see recived from controller text but cannot use it as desighned.
//return Text(_test);
//return Get.toNamed(_test); //that's what i supposed to realize but faced an error:
//The return type 'Future<dynamic>' isn't a 'Widget', as required by the closure's context.
},
//() => Text(navController.bodyContent[navController.selectedIndex])),
// navController.bodyContent[navController.selectedIndex]),
//child: Showcase(),)
),
),
bottomNavigationBar: Obx(() => BottomNavigationBar(
type: BottomNavigationBarType.fixed,
items: [], //here i specify my BottomNavigationBarItems
currentIndex: navController.selectedIndex,
onTap: (index) => navController.selectedIndex = index,
)),
);
}
}
和控制器：
class NavController extends GetxController {
final _selectedIndex = 0.obs;
final List<String> bodyContent = [
'/showcase',
'/liked',
'/publish',
'/messages',
'/profile',
].obs;
get selectedIndex => this._selectedIndex.value;
set selectedIndex(index) => this._selectedIndex.value = index;
}
好吧，它部分有效。我可以接收 bodyContent 路线，但不能只使用它。想要在控制器中保留显示子项的逻辑。我应该怎么办？