新数据类型
| NATIVE TYPE | 32-BIT BACKING TYPE | 64-BIT BACKING TYPE |
|---|---|---|
System.nint |
System.Int32 (int) |
System.Int64 (long) |
System.nuint |
System.UInt32 (uint) |
System.UInt64 (ulong) |
System.nfloat |
System.Single (float) |
System.Double (double) |
| OLD TYPE IN SYSTEM.DRAWING | NEW DATA TYPE | DESCRIPTION |
|---|---|---|
RectangleF |
CGRect |
Holds floating point rectangle information. |
SizeF |
CGSize |
Holds floating point size information (width, height) |
PointF |
CGPoint |
Holds a floating point, point information (X, Y) |
检查平台架构
if (IntPtr.Size == 4) { Console.WriteLine ("32-bit App"); } else if (IntPtr.Size == 8) { Console.WriteLine ("64-bit App"); }
Arrays and System.Collections.Generic
集合索引需要显示转换
public List<string> Names = new List<string>(); ... public string GetName(nint index) { return Names[(int)index]; }
DateTime 与 NSDate需要显示转换
下面两个扩展方法帮助实现隐式转换：
public static DateTime NSDateToDateTime(this NSDate date) { // NSDate has a wider range than DateTime, so clip // the converted date to DateTime.Min|MaxValue. double secs = date.SecondsSinceReferenceDate; if (secs < -63113904000) return DateTime.MinValue; if (secs > 252423993599) return DateTime.MaxValue; return (DateTime) date; } public static NSDate DateTimeToNSDate(this DateTime date) { if (date.Kind == DateTimeKind.Unspecified) date = DateTime.SpecifyKind (date, /* DateTimeKind.Local or DateTimeKind.Utc, this depends on each app */) return (NSDate) date; }