Function to get your Android Device ID (useful for Admob)

Hello,
I had hard time to get my Android Device ID to test Admob on my app... I installed 4 different apps to get it bu I got 4 different Device ID... (0 correct)
I decided to create my own function to get it and I wanted to give it to you. I tested it and it works fine so feel free to use it.

Code (CSharp):

1.  
2.     // Get Android DeviceID
3.     public static string GetDeviceID()
4.     {
5.         // Get Android ID
6.         AndroidJavaClass clsUnity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
7.         AndroidJavaObject objActivity = clsUnity.GetStatic<AndroidJavaObject>("currentActivity");
8.         AndroidJavaObject objResolver = objActivity.Call<AndroidJavaObject>("getContentResolver");
9.         AndroidJavaClass clsSecure = new AndroidJavaClass("android.provider.Settings$Secure");
10.  
11.         string android_id = clsSecure.CallStatic<string>("getString", objResolver, "android_id");
12.  
13.         // Get bytes of Android ID
14.         System.Text.UTF8Encoding ue = new System.Text.UTF8Encoding();
15.         byte[] bytes = ue.GetBytes(android_id);
16.  
17.         // Encrypt bytes with md5
18.         System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
19.         byte[] hashBytes = md5.ComputeHash(bytes);
20.  
21.         // Convert the encrypted bytes back to a string (base 16)
22.         string hashString = "";
23.  
24.         for (int i = 0; i < hashBytes.Length; i++)
25.         {
26.             hashString += System.Convert.ToString(hashBytes[i], 16).PadLeft(2, '0');
27.         }
28.  
29.         string device_id = hashString.PadLeft(32, '0');
30.  
31.         return device_id;
32.     }

kor6k

 

Thanks, works great

Although, you may want to remove the line

Code (CSharp):

1. GlobalVars.Text = GlobalVars.Text + "android_id: " + android_id + "\n";

 

Argh, you're right, I forgot to remove my debug texts....
thanks....

 

Haven't tried your code to see if they match, but doesn't https://docs.unity3d.com/ScriptReference/SystemInfo-deviceUniqueIdentifier.html return the device id?

 

I didn't think it did, but having just checked it now, it does seem to. Has this changed at some point?

 

I'm not sure about when/if it changed. I just know we use it for guest accounts in our games to get unique ids.

I recall reading something long ago about it maybe behaving differently, but now I don't remember what that was.

 

I never found this function when I was searching for a way to get Device ID...
Thanks for the info

 

No problem, the SystemInfo class contains a lot of good information about devices. We use it also for our support tickets to get additional information about the device. Super useful for trying to track down bugs that we don't experience ourselves.

 

Great! Thank you very much