重火力点.在移动端需要initializeApp名称参数，但在web中不需要 &

Question

我有一个适用于Android, iOS和web的Flutter应用程序。我在main中这样使用Firebase:

Future<void> main() async {
WidgetsFlutterBinding.ensureInitialized();
SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
try {
await Firebase.initializeApp(
// name: 'name',
options: DefaultFirebaseOptions.currentPlatform,
);
runApp(
MultiProvider(
providers: [
// providers
],
child: const MyApp(),
),
);
} catch (e) {
print(e.toString());
}
}

设置name参数时，Android和iOS都能运行，web不能运行。窗口已创建，但保持白色，并且控制台显示:

[core/no-options] Firebase: Need to provide options, when not being deployed to hosting via source..

当我注释相同的参数时，它在web中运行，但我在Android和iOS中有同样的问题。它说:

flutter: [core/duplicate-app] A Firebase App named "[DEFAULT]" already exists

我怎样才能让它同时工作?

Answer 1

您可以使用kIsWeb检查平台是否为web，仅当不是web时才设置name

if(kIsWeb){
await Firebase.initializeApp(
await Firebase.initializeApp(
options: DefaultFirebaseOptions.currentPlatform,
);
);
}else{
await Firebase.initializeApp(
name: 'name',
options: DefaultFirebaseOptions.currentPlatform,
);
}