漏洞?System.ArgumentException:'无法找出以下路线: [英] Bug? System.ArgumentException: 'unable to figure out route for:
问题描述
错误
System.ArgumentException:'无法找出以下路线://RegisterPage参数名称:uri'System.ArgumentException:'不可用找出以下路线://LogoPage参数名称:uri'
System.ArgumentException: 'unable to figure out route for: //RegisterPage Parameter name: uri' System.ArgumentException: 'unable to figure out route for: //LogoPage Parameter name: uri'
怎么了?它无法弄清楚路线...?
What is wrong? It cant figure out the route...?
XAML
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
x:Class="MyApp.Views.WelcomePage"
Shell.NavBarIsVisible="False">
<ContentPage.Content>
<StackLayout Padding="10,0,10,0" VerticalOptions="Center">
<Button VerticalOptions="Center" Text="Register" Command="{Binding RegisterCommand}"/>
<Button VerticalOptions="Center" Text="Login" Command="{Binding LoginCommand}"/>
</StackLayout>
</ContentPage.Content>
</ContentPage>
后面的代码
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class WelcomePage : ContentPage
{
public WelcomePage()
{
InitializeComponent();
this.BindingContext = new WelcomeViewModel();
}
}
WelcomeViewModel.cs
WelcomeViewModel.cs
public Command RegisterCommand { get; }
public Command LoginCommand { get; }
public WelcomeViewModel()
{
RegisterCommand = new Command(OnRegisterClicked);
LoginCommand = new Command(OnLoginClicked);
}
private async void OnRegisterClicked(object obj)
{
await Shell.Current.GoToAsync($"//{nameof(RegisterPage)}");
}
private async void OnLoginClicked(object obj)
{
await Shell.Current.GoToAsync($"//{nameof(LoginPage)}");
}
推荐答案
您需要使用 Shell.Current.GoToAsync()
为愿意浏览的每个页面注册一个路由,并使用这样,您还可以阐明页面层次结构:
Your need to register a route for each page you are willing to navigate into it using Shell.Current.GoToAsync()
, with this way you can also clarify your pages hierarchy:
<FlyoutItem FlyoutDisplayOptions="AsMultipleItems">
<ShellContent Title="RegisterPage"
Route="RegisterPage"
ContentTemplate="{DataTemplate local:RegisterPage}"/>
<ShellContent Title="LoginPage"
Route="LoginPage"
ContentTemplate="{DataTemplate local:LoginPage}"/>
<ShellContent Title="Page3"
ContentTemplate="{DataTemplate local:Page3}"/>
</FlyoutItem>
如果愿意,还可以在代码中使用 Routing.RegisterRoute()
注册路由,只要它在调用路由之前运行即可: Routing.RegisterRoute("//Page3",typeof(Page3));
You can also register the route using Routing.RegisterRoute()
in the code if you prefer, as long as it runs before a route is invoked:
Routing.RegisterRoute("//Page3", typeof(Page3));
更多详细信息: Shell导航
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