TabbedPage selectedItem doesn't change when change tab programmatically to tab in "More"

Question

Hi everybody,
I am working on a TabbedPage which has 6 tabs.

<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"  
            xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"  
            xmlns:tabs="clr-namespace:TabbedPageIssue"  
            xmlns:android="clr-namespace:Xamarin.Forms.PlatformConfiguration.AndroidSpecific;assembly=Xamarin.Forms.Core"  
            android:TabbedPage.ToolbarPlacement="Bottom"  
            android:TabbedPage.IsSwipePagingEnabled="False"  
            android:TabbedPage.BarSelectedItemColor="#F79320"  
            android:TabbedPage.BarItemColor="#B1B2B3"  
            x:Class="TabbedPageIssue.MainPage">  
    <tabs:Tab1 Title="Tab1"/>  
    <tabs:Tab2 Title="Tab2"/>  
    <tabs:Tab3 Title="Tab3"/>  
    <tabs:Tab4 Title="Tab4"/>  
    <tabs:Tab5 Title="Tab5"/>  
    <tabs:Tab6 Title="Tab6"/>  
  
</TabbedPage>  

In my app, I want to have a button to direct the app to a tab "inbox" in the "More" part with this code:

private void Button_Clicked(object sender, EventArgs e)  
        {  
            var mainPage = this.Parent as TabbedPage;  
            mainPage.CurrentPage = mainPage.Children[4];  
        }  

When i click the button to change tab, the View changes but the "More" tab is not selected, and if i click on tab1, the view of tab 5 doesn't disappear.

This seems to be a bug of TabbedPage. Everybody has any idea to fix this problem.

Answer 1

Hello,

Welcome to Microsoft Q&A!

I did reproduce the problem , and I'm sure this is a potential issue .

Because if we set CurrentPage as the first 4 items , it works fine , but the tab does not change when the index is greater than 4.

Only we manually click on the items in more dialog so that the selected tab get changed , but it does not work just with the code CurrentPage = tabbedpage.Children[4];

Consider raising issue on github : https://github.com/xamarin/Xamarin.Forms/issues .

Best Regards,
Cole Xia

---

If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Answer 2

@TRAN HOANG LONG did u got answer this question