flutter - 如果我们在 GetX 上使用 bottomNavigationBar,如何使用内部导航
问题描述
我正在尝试body
在小部件的内部进行导航bottomNavigationBar
,这是我的代码:
class WrapperController extends GetxController {
int currentIndex = 0;
List<BottomNavigationElement> items = [];
Widget navigationTab({GlobalKey<NavigatorState> naviKey, Widget widget}) {
return Navigator(
key: naviKey,
onGenerateRoute: (routeSettings) {
return GetPageRoute(page: () => widget);
},
);
}
Widget bottomNavigationBar() {
return BottomNavigationBar(
selectedItemColor: Get.theme.accentColor,
type: BottomNavigationBarType.fixed,
currentIndex: currentIndex,
backgroundColor: Get.theme.primaryColor,
onTap: (int index) => _selectTab(index),
items: items.map((e) => e.bottomBarItem).toList(),
);
}
void _selectTab(int index) {
if (index == currentIndex) {
items[index]
.navigationKey
.currentState
.popUntil((route) => route.isFirst);
} else {
currentIndex = index;
}
update();
}
Future<bool> onWillPop() async {
final isFirstRouteInCurrentTab =
!await items[currentIndex].navigationKey.currentState.maybePop();
if (isFirstRouteInCurrentTab) {
if (currentIndex != 0) {
// _selectTab(1);
return false;
}
}
return isFirstRouteInCurrentTab;
}
@override
void onInit() {
super.onInit();
items = [
//Каталог
BottomNavigationElement(
bottomBarItem: BottomNavigationBarItem(
icon: Icon(Icons.search),
label: "Home",
),
bottomBarView: HomePage(),
navigationKey: Get.nestedKey('0'),
),
//Любимое
BottomNavigationElement(
bottomBarItem: BottomNavigationBarItem(
icon: Icon(Icons.favorite_border),
label: "Favorites",
),
bottomBarView: FavoritesPage(),
navigationKey: Get.nestedKey('1'),
),
//Корзина
BottomNavigationElement(
bottomBarItem: BottomNavigationBarItem(
icon: Icon(Icons.shopping_cart_outlined),
label: "Cart",
),
bottomBarView: CartPage(),
navigationKey: Get.nestedKey('2'),
),
//Заказы
BottomNavigationElement(
bottomBarItem: BottomNavigationBarItem(
icon: Icon(Icons.history),
label: "History",
),
bottomBarView: HistoryPage(),
navigationKey: Get.nestedKey('3'),
),
//Меню
BottomNavigationElement(
bottomBarItem: BottomNavigationBarItem(
icon: Icon(Icons.menu),
label: "Menu",
),
bottomBarView: MenuPage(),
navigationKey: Get.nestedKey('4'),
),
];
}
}
class BottomNavigationElement {
Widget bottomBarView;
BottomNavigationBarItem bottomBarItem;
GlobalKey<NavigatorState> navigationKey;
BottomNavigationElement({
@required this.bottomBarView,
@required this.bottomBarItem,
@required GlobalKey<NavigatorState> navigationKey,
});
}
这是Wrapper
小部件:
class Wrapper extends StatelessWidget {
@override
Widget build(BuildContext context) {
return GetBuilder<WrapperController>(builder: (controller) {
return Scaffold(
body: IndexedStack(
index: controller.currentIndex,
children: controller.items
.map((e) => controller.navigationTab(
naviKey: e.navigationKey,
widget: e.bottomBarView,
))
.toList(),
),
bottomNavigationBar: controller.bottomNavigationBar(),
);
});
}
}
这是HomePage
具有导航按钮的(“搜索”):
class HomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Home"),
),
body: Center(
child: ElevatedButton(
onPressed: () => Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => Detail(),
),
),
child: Text("Detail"),
),
),
);
}
}
问题是,当我Navigator.of (context)
Get.to ()
改为使用时,导航完全完成,而不是在体内。我需要使用内部导航Get.to ()
,我该怎么做?
解决方案
有一个快速的解决方案
为底部导航栏创建一个单独的导航器(如果您想将身份验证与主逻辑分开)。
代码是:
Expanded( child: Navigator( key: Get.nestedKey(1), initialRoute: controller.pageName.value, onGenerateRoute: HomeRouter.generateRoute, ) )
导航
void gotoPage(String page, BuildContext context) { pageName.value = page; print("Request to go to ${pageName.value}"); Get.keys[1]!.currentState!.pushNamed(page); //if you want to change the URL in browser as well html.window.history.pushState(null, "/", page); }
推荐阅读
- python - 如何从嵌套的 JSON 字典中创建一个 DataFrame
- python - 使用 for 循环在两个数据集中查找最接近值的值
- apache-spark - livy.rsc.jars 和 livy.repl.jars 有什么区别?
- javascript - 无法使用新的 angular/cli 应用程序运行 e2e 测试
- amazon-web-services - 有没有办法找出每个调用 lambda 的资源?
- swift - 如何在 Mac 上使用带有效果的 appleScript 发送 iMessage(如 slam 效果)
- r - 与 spatstat 的多重比较
- css - 如何使用 twitter-bootstrap 4.2 创建 100% 高度的左侧菜单?
- css - 如何使用 css 在“内联”中显示数据?
- python - AWS Sagemaker SKlearn 入口点允许多个脚本