如何使用 xamarin C# 从 iOS 上的广告中读取 kCBAdvDataManufacturerData 的值

Question

I tried many things but this seems to be as close as I can get

NSDictionary advertisementData = e.AdvertisementData;
NSString ns_p_mdata = new NSString("kCBAdvDataManufacturerData");
NSObject obj_mdata = advertisementData.ValueForKey(ns_p_mdata);
NSData strMdata = (NSData)obj_mdata;

byte[] result = new byte[strMdata.Length];
System.Runtime.InteropServices.Marshal.Copy(strMdata.Bytes, result, 0, (int)strMdata.Length);
string test = Convert.ToBase64String(result);

However, this does not give me the expected value.

I was using obj_mdata.Description before but this no longer works on iOS 13.x

Answer 1

Usually those constants that are used as strings in iOS are tucked away somewhere as an enum or get only property.

this one appears to be at CoreBluetooth.CBAdvertisement.DataManufacturerDataKey . I think that's the one you're looking for.