为什么使用 Xamarin 的 iOS 显示器上没有显示工具栏

Question

I want to display very simple Toolbar using xamarin on iOS, but I can't see the toolbar on display.

I use this code:

    <?xml version="1.0" encoding="utf-8" ?>
      <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
                   xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                   x:Class="Test.MainPage">

        <ContentPage.ToolbarItems>
          <ToolbarItem Text="Example Item"
                       IconImageSource="https://img.icons8.com/cute-clipart/64/000000/menu.png"
                     Order="Primary"
                     Priority="0" />
        </ContentPage.ToolbarItems>

</ContentPage>

There are no errors in the code and the display is empty..

What needs to change to see the toolbar?

Answer 1

Are you putting your page in NavigationPage? By default ContentPage does not have Navigation bar (Toolbar), you must put your page in NavigationPage, after that Navigation bar will show up with its functionality. have a look at here: Xamarin.Forms Navigation

So I assume you should do something like this

public App ()
{
   MainPage = new NavigationPage (new MainPage());
}