PopToRootAsync 到选定的 Shell 弹出项目

Question

I have this code below to create an action bar with an integrated side bar using <Shell> so the user can navigate easily by swiping right. Being new to C#, I understand that the first ShellContent is gonna be the page to be loaded and previewed by the <Shell> when the app opens which is ContentTemplate="{DataTemplate local:LoanHistory}"

I also understand when you click on the FlyoutItems you aren't gonna add stack to the navigation but the <Shell> is changing the contents each time you click on it. This code below is in a file called MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<Shell 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"
             xmlns:local="clr-namespace:LoanApp2.Views"
             mc:Ignorable="d"
             x:Class="LoanApp2.MainPage" BackgroundColor="#62bef0" Title="Dylan">

    <FlyoutItem Title="MyTabApp" Shell.TabBarIsVisible="False" FlyoutDisplayOptions="AsMultipleItems">

        <ShellContent Title="Loan History" IsTabStop="False" ContentTemplate="{DataTemplate local:LoanHistory}"/>
        <ShellContent Title="Apply for Loan" IsTabStop="False" ContentTemplate="{DataTemplate local:LoanApplication}"/>
        <ShellContent Title="Logout" IsTabStop="False"  ContentTemplate="{DataTemplate local:LoanHistory}"/>
    </FlyoutItem>

</Shell>

So, via the side bar (shell) - I click on Apply for Loan which takes me to LoanApplication.xaml . By this time, no stack is added to the navigation. In the LoanApplication.xaml , I'm using PushAsync binded to a button to take me to a page called AmountLoanable.xaml . This gets added to the stack and the back button on the action bar is now available.

After I am done with the stuff on AmountLoanable.xaml , I use PopToRootAsync to remove the navigation stack except for the root page (which is the <Shell> , MainPage.xaml ). However, it takes me back to the "Apply for Loan" which was selected prior, what I want to happen is for it to load a fresh new <Shell> , MainPage.xaml page. In that way, the first page (Loan History) will be the one selected instead of the last page accessed via <Shell>

Answer 1

尝试将您的Application.Current.MainPage重置为您的默认 Shell，例如： Application.Current.MainPage = new AppShell();