xamarin - I need To Set Font from .ttf File

Question

I'm Trying to set font to my system and use it in my application it works fine for android but it does not apply for IOS - First I Added .ttf File to Resources in IOS Project

Then Added This Font to Entitlements.plist

For Android, I Added to Assets Folder

Then App File in the Main Application I added this Code in dictionary Resources

 <Style x:Key="LableStyle" TargetType="Label" >
        <Setter Property="Label.FontFamily">
            <Setter.Value>
                <OnPlatform x:TypeArguments="x:String">
                    <OnPlatform.Android>
                        DroidSansArabic.ttf#DroidSansArabic
                            </OnPlatform.Android>
                    <OnPlatform.iOS>
                        DroidSansArabic
                    </OnPlatform.iOS>
                </OnPlatform>
            </Setter.Value>
        </Setter>
    </Style>

And for The Label I Added the Style like this

<Label HorizontalOptions="StartAndExpand" 
   Margin="20,5,0,0"
   x:Name="lblForgotPassword"
   Text="Forgot Password"
   Style="{StaticResource LableStyle}">
</Label>

But it works fine in Android but not working in IOS Why ?

Answer 1

I would assume your font family name is incorrect on iOS. The macOS/iOS font names are not the filename sans extension, the names are defined within the ttf itself.

The DroidSansArabic.ttf on my macOS and the one that I have used on iOS uses the family name of B Tabassom

So the usage of it in Forms would be:

label.FontFamily = Device.OnPlatform(
    iOS: "B Tabassom",

    Android: "DroidSansArabic.ttf#DroidSansArabic",
    WinPhone: null
);

As there are a number of DroidSansArabic.ttf floating around, verify what your font family name is by opening the ttf in macOS's Font Book and looking at the title bar:

If your macOS has it already installed, look in the name column:

Update: You also the UIAppFonts key in the wrong .plist, it goes in the Info.plist:

<key>UIAppFonts</key>
        <array>
                <string>DroidSansArabic.ttf</string>
        </array>
</dict>