Xamarin.iOS，将Dictionary转换为NSDictionary

Question

我试图在我的Xamarin项目中集成Branch.io，并遇到了将c＃的Dictionary转换为NSDictionary的要求。

试着

• 字典作为NSDictionary //没有用

试过这个

private NSMutableDictionary BranchData (Dictionary<string, object> data)
        {
            List<string> keys = data.Keys.ToList();
            NSMutableDictionary branchData = new NSMutableDictionary ();

            foreach (string key in keys) {
                branchData.Add (new NSString(key), data[key] as NSObject);
            }
            return branchData;
        }

没工作。

任何线索都会有所帮助。 谢谢！

更新：

https://stackoverflow.com/a/5664785/344798

Answer 1

这就是我将字典转换为NSDictionary的方式

var iconattrs = new Dictionary<string, string>
                {
                    {"ITEMTYPE", "DIVESITE"},
                    {"LOCATION", diveSite.Location},
                    {"DESCRIPTION", diveSite.BriefDescription},
                    {"LINK", diveSite.Link},
                    {"ID", diveSite.ID.ToString()}
                };

 var myResult = NSDictionary.FromObjectsAndKeys(iconattrs.Values.ToArray()
                                               ,iconattrs.Keys.ToArray())

Answer 2

这对我有用..可以优化课程或更聪明：

private static NSMutableDictionary ConvertToNativeDictionary(Dictionary<string, object> dict)
{
    NSMutableDictionary newDictionary = new NSMutableDictionary();

    try
    {
        foreach (string k in dict.Keys)
        {
            var value = dict[k];

            try
            {
                if (value is string)
                    newDictionary.Add((NSString)k, new NSString((string)value));
                else if (value is int)
                    newDictionary.Add((NSString)k, new NSNumber((int)value));
                else if (value is float)
                    newDictionary.Add((NSString)k, new NSNumber((float)value));
                else if (value is nfloat)
                    newDictionary.Add((NSString)k, new NSNumber((nfloat)value));
                else if (value is double)
                    newDictionary.Add((NSString)k, new NSNumber((double)value));
                else if (value is bool)
                    newDictionary.Add((NSString)k, new NSNumber((bool)value));
                else if (value is DateTime)
                    newDictionary.Add((NSString)k, ((DateTime)value).DateTimeToNSDate());
                else
                    newDictionary.Add((NSString)k, new NSString(value.ToString()));
            }
            catch (Exception Ex)
            {
                if (value != null)
                    Ex.Data.Add("value", value);

                Logger.LogException(Ex);
                continue;
            }
        }
    }
    catch (Exception Ex)
    {
        Logger.LogException(Ex);
    }
    return newDictionary;
}

这是NSDate转换：

public static class NSDateExtensions
{
    public static DateTime NSDateToDateTime(this NSDate date)
    {
        DateTime reference = TimeZone.CurrentTimeZone.ToLocalTime(
            new DateTime(2001, 1, 1, 0, 0, 0));
        return reference.AddSeconds(date.SecondsSinceReferenceDate);
    }

    public static NSDate DateTimeToNSDate(this DateTime date)
    {
        DateTime reference = TimeZone.CurrentTimeZone.ToLocalTime(
            new DateTime(2001, 1, 1, 0, 0, 0));
        return NSDate.FromTimeIntervalSinceReferenceDate(
            (date - reference).TotalSeconds);
    }

}