Unique idenifier for device

Question

I am new to Xamarin Forms development and new to this forum, so sorry if this is a stupid question! I am working on a Xamarin Forms app that is using oAuth style of login / authentication. I can pass a "device id" when requesting a token, so that the token applies to that device only, for the specified user. Is there an easy way to obtain a unique id via Xamarin Forms, or do I need to generate one (somehow) and store it on the device (somehow)?

Answer 1

Hello,​

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Is there an easy way to obtain a unique id via Xamarin Forms

To get the idenifier for device, try to achieve the function on the native platform using DependencyService.

   //1.create an interface to define the method  
   public interface IGetDeviceInfo  
   {  
       string GetDeviceID();  
   }  
   //2.implement the service on the android platform  
   [assembly: Xamarin.Forms.Dependency(typeof(GetInfoImplement))]  
   namespace TestApplication_4.Droid  
   {  
       public class GetInfoImplement : IGetDeviceInfo  
       {  
           string IGetDeviceInfo.GetDeviceID()  
           {  
               var context = Android.App.Application.Context;  
               string id = Android.Provider.Settings.Secure.GetString(context.ContentResolver, Secure.AndroidId);  
     
               return id  
           }  
       }  
   }  
   //3.consume the DependencyService command in the shared project  
   DependencyService.Get<IGetDeviceInfo>().GetDeviceID();  

For the iOS platform, you could use the following method.

   string id = UIDevice.CurrentDevice.IdentifierForVendor.AsString();  

Best Regards,

Jarvan Zhang

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Answer 2

Watch out. string id = UIDevice.CurrentDevice.IdentifierForVendor.AsString() is not a fixed value, it changes depending on the installation, in fact, every time you reinstall the application the value will change