在iOS Xamarin Native中设置FSCalendarAppearance委托

using Foundation;
using FSCalendar;
using UIKit;

public class MyFSCalendarDelegateAppearance : FSCalendarDelegateAppearance
{
    public override UIColor TitleDefaultColorFor(FSCalendar calendar, NSDate date)
    {
        // 设置默认日期标题的颜色
        return UIColor.Red;
    }

    public override UIColor FillDefaultColorFor(FSCalendar calendar, NSDate date)
    {
        // 设置默认日期的背景颜色
        return UIColor.Yellow;
    }
}

public partial class ViewController : UIViewController
{
    public override void ViewDidLoad()
    {
        base.ViewDidLoad();

        // 创建FSCalendar控件
        var calendar = new FSCalendar.FSCalendar();
        calendar.Frame = new CoreGraphics.CGRect(0, 0, 300, 300);

        // 实例化自定义的委托类
        var delegateAppearance = new MyFSCalendarDelegateAppearance();

        // 将委托类赋值给FSCalendar的Delegate属性
        calendar.Delegate = delegateAppearance;

        // 添加FSCalendar控件到视图中
        View.AddSubview(calendar);
    }
}