Xamarin FontImageSource Glyph not showing up

Question

I am trying to add a font icon using the following code:

    <Image>
        <Image.Source>
            <FontImageSource
                FontFamily="{OnPlatform iOS=Ionicons,
                                        Android=ionicons.ttf#}"
                Glyph="&#xf37f;"
                Size="44"
                Color="Red" />
        </Image.Source>
    </Image>

which I found on the official Microsoft Docs. However, the icon doesn't show up on my Android phone, instead I get this (symbol not found placeholder):

Answer 1

1. You miss a "#" after Android=ionicons.ttf :

   <Image>
       <Image.Source>
           <FontImageSource
               FontFamily="{OnPlatform iOS=Ionicons,Android=ionicons.ttf#}"
               Glyph="&#xf37f;"
               Size="44"
               Color="Red" />
       </Image.Source>
   </Image>
   

2. I don't think there is a icon font named f37f in the ionicons