How can I get device unique ID in android java? As law of Google in 2020

Question

I have already read documentation and I get it that IMEI, Android ID, SECURE ID etc has a restriction now. Then I have used UUID to use in my apps as a unique ID but the problem is that while the storage or data are cleared UUID which is stored in sharedpreferences are also removed and get a different UUID. Please help me and suggest me to get android unique device ID.

Answer 1

On a device first boot, a randomly value is generated and stored. This value is available via Settings.Secure.ANDROID_ID . It’s a 64-bit number that should remain constant for the lifetime of a device. ANDROID_ID seems a good choice for a unique device identifier because it’s available for smartphones and tablets. To retrieve the value, you can use the following

 import android.provider.Settings.Secure;
 private String android_id = Secure.getString(getContext().getContentResolver(),Secure.ANDROID_ID);



//Secure ID V 10
 val secureId = Secure.getString(getContentResolver(), Secure.ANDROID_ID)


//UUID
    private static String uniqueID = null;
    private static final String PREF_UNIQUE_ID = "PREF_UNIQUE_ID";public synchronized static String id(Context context) {
       if (uniqueID == null) {
          SharedPreferences sharedPrefs = context.getSharedPreferences(
             PREF_UNIQUE_ID, Context.MODE_PRIVATE);
          uniqueID = sharedPrefs.getString(PREF_UNIQUE_ID, null);    

       if (uniqueID == null) {
             uniqueID = UUID.randomUUID().toString();
             Editor editor = sharedPrefs.edit();
             editor.putString(PREF_UNIQUE_ID, uniqueID);
             editor.commit();
          }
       }   
       return uniqueID;
    }