XamlParseException because of custom MaterialConfiguration

[ganyuss]

🐛 Bug Report

Whenever I set a custom MaterialConfiguration, sizes are broken. The MaterialLabel font sizes are all default sizes, and when I open an alert, I get this exception:

Xamarin.Forms.Xaml.XamlParseException: Position 19:32. StaticResource not found for key Material.Dialog.Width
  at Xamarin.Forms.Xaml.StaticResourceExtension.ProvideValue (System.IServiceProvider serviceProvider) [0x0008f] in D:\a\1\s\Xamarin.Forms.Xaml\MarkupExtensions\StaticResourceExtension.cs:27 
  at XF.Material.Forms.UI.Dialogs.MaterialAlertDialog.InitializeComponent () [0x00066] in Z:\Documents\OpenSource\XF-Material-Library\XF.Material\obj\Release\monoandroid10.0\UI\Dialogs\MaterialAlertDialog.xaml.g.cs:42 
  at XF.Material.Forms.UI.Dialogs.MaterialAlertDialog..ctor (XF.Material.Forms.UI.Dialogs.Configurations.MaterialAlertDialogConfiguration configuration) [0x00006] in Z:\Documents\OpenSource\XF-Material-Library\XF.Material\UI\Dialogs\MaterialAlertDialog.xaml.cs:32 
  at XF.Material.Forms.UI.Dialogs.MaterialAlertDialog..ctor (System.String message, System.String title, System.String action1Text, System.String action2Text, XF.Material.Forms.UI.Dialogs.Configurations.MaterialAlertDialogConfiguration configuration) [0x00000] in Z:\Documents\OpenSource\XF-Material-Library\XF.Material\UI\Dialogs\MaterialAlertDialog.xaml.cs:12 
  ...

This is due to the "addDefaults" parameter to the Material class' constructor. It stops the flow from setting up size resources whenever a custom config is provided.

XF-Material-Library/XF.Material/Material.cs

Lines 128 to 140 in fef56fb

	if (addDefaults)
	{
	if (config == null)
	{
	if (!_res.MergedDictionaries.Contains((defaultColors.Value)))
	_res.MergedDictionaries.Add(defaultColors.Value);
	if (!_res.MergedDictionaries.Contains((defaultTypos.Value)))
	_res.MergedDictionaries.Add(defaultTypos.Value);
	}
	if (!_res.MergedDictionaries.Contains((defaultSizes.Value)))
	_res.MergedDictionaries.Add(defaultSizes.Value);
	}

Expected behavior

XF.Material.Forms.Material.Init should setup sizes correctly when custom configs are set.

Reproduction steps

Add this to app resources:

        <resources:MaterialColorConfiguration x:Key="Material.Color"
                                              Background="#EAEAEA"
                                              Error="#B00020"
                                              OnBackground="#000000"
                                              OnError="#FFFFFF"
                                              OnPrimary="#ffffff"
                                              OnSecondary="#FFFFFF"
                                              OnSurface="#000000"
                                              Primary="{StaticResource PrimaryColor}"
                                              PrimaryVariant="#ffdbcd"
                                              Secondary="#4e6704"
                                              SecondaryVariant="#cfee82"
                                              Surface="#FFFFFF" />
        
        <resources:MaterialConfiguration x:Key="Material.Configuration"
                                    ColorConfiguration="{StaticResource Material.Color}" />                                    

And init the package like this:

XF.Material.Forms.Material.Init(this, (MaterialConfiguration)Resources["Material.Configuration"]);

Configuration

Version: 1.8.0

Platform:

• 📱 iOS
• 🤖 Android
• 🏁 WPF
• 🌎 UWP
• 🍎 MacOS
• 📺 tvOS
• 🐒 Xamarin.Forms

[ganyuss]

Besides, on Android, initialising with XF.Material.Forms.Material.Init(this, new MaterialConfiguration()); breaks the app. On app open I get

System.InvalidOperationException: Invalid on Color.Default
  at Xamarin.Forms.Color.MultiplyAlpha (System.Double alpha) [0x00019] in D:\a\1\s\Xamarin.Forms.Core\Color.cs:151 
  at XF.Material.Droid.Renderers.MaterialButtonRenderer.SetTextColors () [0x0005c] in Z:\Documents\OpenSource\XF-Material-Library\XF.Material\Platforms\Android\Renderers\MaterialButtonRenderer.cs:89 
  at XF.Material.Droid.Renderers.MaterialButtonRenderer.OnElementChanged (Xamarin.Forms.Platform.Android.ElementChangedEventArgs`1[TElement] e) [0x000b2] in Z:\Documents\OpenSource\XF-Material-Library\XF.Material\Platforms\Android\Renderers\MaterialButtonRenderer.cs:55 
  ...