每当我点击Google Sign-In按钮时都会出现这个错误。在这里输入图像描述。在进入谷歌登录按钮后，它应该引导用户到底部导航栏，在这里输入图像描述。如果用户没有注销，应用程序将保存令牌，用户将直接访问底部导航栏，而无需再次登录谷歌…我怎么解决它?
Exception has occurred.
FlutterError (There are multiple heroes that share the same tag within a subtree.
Within each subtree for which heroes are to be animated (i.e. a PageRoute subtree), each Hero must have a unique non-null tag.
In this case, multiple heroes had the following tag: <default FloatingActionButton tag>
# Here is the subtree for one of the offending heroes: Hero)
google登录页面代码
import 'package:flutter/material.dart';
import 'dart:math' as math;
import 'package:liquid_swipe/liquid_swipe.dart';
import 'package:recipe_collector/Authen/Google_SignIn.dart';
import 'package:recipe_collector/BottomNavigationBar.dart';
import 'package:provider/provider.dart';
import 'package:recipe_collector/globalVariable.dart' as global;
import 'package:custom_clippers/custom_clippers.dart';
import '../OCR/OCR_Page.dart';
class MyliquidSwipe extends StatefulWidget {
const MyliquidSwipe({super.key});
@override
State<MyliquidSwipe> createState() => _MyliquidSwipeState();
}
class _MyliquidSwipeState extends State<MyliquidSwipe>{
@override
Widget build(BuildContext context) {
final page = [
//2rd page
MaterialApp(home: Builder(builder: (BuildContext context) {
return Scaffold(
backgroundColor: Color.fromARGB(255, 185, 174, 151),
body: Stack(
children: [
SizedBox(
height: MediaQuery.of(context).size.height * 0.12,
),
Container(
child: Image(
image: AssetImage(
'assets/IntroPage/Tip Ingredient for Health Hint.png',
),
alignment: Alignment.center,
height: double.infinity,
width: double.infinity,
fit: BoxFit.cover,
),
),
Column(children: [
SizedBox(
height: MediaQuery.of(context).size.height * 0.12,
),
Padding(
padding:
const EdgeInsets.symmetric(horizontal: 8.0, vertical: 3),
child: Align(
alignment: Alignment.bottomLeft,
child: Container(
child: Text(
'Welcome To',
style: TextStyle(
fontSize: displayWidth(context) * 0.06,
fontWeight: FontWeight.w300,
color: Color.fromARGB(255, 172, 152, 129)),
))),
),
Padding(
padding:
const EdgeInsets.symmetric(horizontal: 8.0, vertical: 3),
child: Align(
alignment: Alignment.bottomLeft,
child: Container(
child: Text(
'Recipes Collector',
style: TextStyle(
fontSize: displayWidth(context) * 0.08,
fontWeight: FontWeight.w600,
color: Color.fromARGB(255, 172, 152, 129)),
),
),
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.04,
),
Container(
child: Image(
image: AssetImage(
'assets/IntroPage/TIFH.png',
),
height: 310,
width: 310,
fit: BoxFit.fill,
),
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.030,
),
Stack(
alignment: Alignment.center,
children: [
Container(
child: Image(
image: AssetImage(
'assets/IntroPage/Intro Tag.png',
),
// alignment: Alignment.center,
height: MediaQuery.of(context).size.height * 0.1,
width: MediaQuery.of(context).size.width * 0.85,
fit: BoxFit.fill,
),
),
Text('Tip Ingredient for Health Hint',
style: TextStyle(
fontSize: displayWidth(context) * 0.048,
fontWeight: FontWeight.w600,
color: Color.fromARGB(255, 51, 44, 25),
)),
],
),
SizedBox(
height: MediaQuery.of(context).size.height * 0.05,
),
Align(
alignment: Alignment.bottomCenter,
child: SizedBox(
width: MediaQuery.of(context).size.width * 0.82,
height: MediaQuery.of(context).size.height * 0.07,
child: ElevatedButton(
style: ButtonStyle(
shape: MaterialStateProperty.all<
RoundedRectangleBorder>(RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20),
)),
backgroundColor: MaterialStateProperty.all(
Color.fromARGB(255, 196, 192, 182),
),
),
The Error happen whenever i click the Google Sign-In Button
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
onPressed: () =>
googleSignIn().whenComplete(() async {
FirebaseUser user =
await FirebaseAuth.instance.currentUser();
Navigator.of(context).pushReplacement(
MaterialPageRoute(
builder: (context) => BottomNav()));
global.retrieveUserData();
}),
child: Padding(
padding: const EdgeInsets.all(5.0),
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
decoration: BoxDecoration(
shape: BoxShape.circle,
color: Colors.white),
child: ClipRRect(
child: Image.network(
'http://pngimg.com/uploads/google/google_PNG19635.png',
fit: BoxFit.cover),
),
),
SizedBox(
width: 15,
),
Text("Let's Start With Google !",
style: TextStyle(
fontSize: displayWidth(context) * 0.045,
fontWeight: FontWeight.w500,
color: Color.fromARGB(255, 0, 0, 0),
)),
],
),
),
)))
]),
],
),
);
})),
];
return MaterialApp(
home: LiquidSwipe(
enableLoop: false,
pages: page,
slideIconWidget: Icon(
Icons.arrow_left_sharp,
size: 30,
color: Colors.white,
),
),
);
}
}
底部导航条形码
import 'package:convex_bottom_bar/convex_bottom_bar.dart';
import 'package:recipe_collector/All%20Recipes/viewpage.dart';
import 'package:recipe_collector/OCR/OCR_Page.dart';
import 'package:recipe_collector/Profile/Profile.dart';
import 'package:recipe_collector/Recipes%20Collection/RecipeSearch.dart';
import 'package:recipe_collector/Recipes%20Collection/recipe_collection_home.dart';
import 'package:recipe_collector/BottomNavigationBar.dart';
import 'BuyingList/cartHome.dart';
class BottomNav extends StatefulWidget {
const BottomNav({super.key});
@override
// _BottomNavState createState() => _BottomNavState();
State<BottomNav> createState() => _BottomNavState();
}
class _BottomNavState extends State<BottomNav> {
int _currentindex = 2;
List pages = [RecipesViewPage(),RecipeCollectorHome(),OCRPage(),HomeCart(),Profile()];
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: pages[_currentindex],
bottomNavigationBar: ConvexAppBar(
style: TabStyle.reactCircle,
backgroundColor: Color.fromARGB(255, 51, 44, 25),
items: [
TabItem(icon: Icons.travel_explore, title: 'All'),
TabItem(icon: Icons.explore, title: 'Collection'),
TabItem(icon: Icons.edit_note_rounded, title: 'OCR'),
TabItem(icon: Icons.message, title: 'Grocery'),
TabItem(icon: Icons.perm_contact_cal, title: 'Profile'),
],
initialActiveIndex: 2, //optional, default as 0
onTap: (int i) {
setState(() {
_currentindex = i;
});
})),
);
}
}```
如果您的代码中有多个FloatingActionButton，请将它们的heroTag属性设置为不同的值(String)。
Hero小部件heroTag必须是唯一的标签。如果您复制了它，将抛出此错误。