In Xamarin.Android code there's a little mistake when set a transparent background.
In fact in PlotView.cs code (at line 301) if background color has alpha value setted to 0 white color is forcily used as background.
var background = actualModel.Background.IsVisible () ? actualModel.Background : OxyColors.White;
Fix is simple:
var background = actualModel.Background.IsVisible () ? actualModel.Background : OxyColors.Transparent;
Comments: I added an `ActualBackground` property and changed the iOS and Android implementation.
In fact in PlotView.cs code (at line 301) if background color has alpha value setted to 0 white color is forcily used as background.
var background = actualModel.Background.IsVisible () ? actualModel.Background : OxyColors.White;
Fix is simple:
var background = actualModel.Background.IsVisible () ? actualModel.Background : OxyColors.Transparent;
Comments: I added an `ActualBackground` property and changed the iOS and Android implementation.