Android Code Snippet Generate Unique Id on Android No permissions Needed.

Based on This StackOverflow

alternatives of IME

Sub GETUniqueID As String
Dim JO As JavaObject
Dim ID As String
JO.InitializeContext
ID = JO.RunMethod("getUniqueID", Null)
Log(ID)
Return ID
End Sub

#If Java
import android.media.MediaDrm;
import android.os.Build;
import android.content.*;
import java.util.*;

//private final Context context;
private String initialVal = "";


public String getUniqueID() {
   UUID wideVineUuid = new UUID(-0x121074568629b532L, -0x5c37d8232ae2de13L);
   try {
      MediaDrm wvDrm = new MediaDrm(wideVineUuid);
      byte[] wideVineId = wvDrm.getPropertyByteArray(MediaDrm.PROPERTY_DEVICE_UNIQUE_ID);
      Base64.Encoder enc = Base64.getEncoder();
      String encodedUid = enc.encodeToString(wideVineId);
      return encodedUid;
   } catch (Exception e) {
      return initialVal;
   }
}

#End If

Tested On Factory Reset And it keeps the same Value, Any Suggestions are welcome. Good Luck

 

[KapiteinOllie]

Change
public String getUniqueID() {
to
public static String getUniqueID() {

Thank you for replying Erel,

I have tried your solutions but

First try of compilation it gave me an error:

(AndroidX SDK)
Compiling resources (0.05s)
Linking resources (0.23s)
Compileren gegenereerde Java code. Error
src\b4a\example\b4xmainpage.java:111: error: non-static variable initialVal cannot be referenced from a static context
return initialVal;
^
Note: src\b4a\example\main.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
1 error

javac 14.0.1

so i changed
private String initialVal = "";
to
private static String initialVal = "";

No error with compilation but when i run the app it gave me the same error:

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create (first time) **
*** mainpage: B4XPage_Created
*** mainpage: B4XPage_Appear
** Activity (main) Resume **
b4xmainpage_vvvv3 (java line: 75)
java.lang.RuntimeException: Method: getUniqueID not found in: b4a.example.main
at anywheresoftware.b4j.object.JavaObject$MethodCache.getMethod(JavaObject.java:363)
at anywheresoftware.b4j.object.JavaObject.RunMethod(JavaObject.java:120)
at b4a.example.b4xmainpage._vvvv3(b4xmainpage.java:75)
at b4a.example.b4xmainpage._button1_click(b4xmainpage.java:51)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:221)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:201)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
at android.view.View.performClick(View.java:7146)
at android.view.View.performClickInternal(View.java:7119)
at android.view.View.access$3500(View.java:803)
at android.view.View$PerformClick.run(View.java:27533)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7386)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:980)

 

[Erel]

Sorry, missed the issue.

When you use this code in a class (such as B4XMainPage) it should be like this:

Sub GetUniqueID As String
    Dim JO As JavaObject = Me
    Return JO.RunMethod("getUniqueID", Null)
End Sub

#If Java
import android.media.MediaDrm;
import android.os.Build;
import android.content.*;
import java.util.*;

//private final Context context;
private String initialVal = "";


public String getUniqueID() {
   UUID wideVineUuid = new UUID(-0x121074568629b532L, -0x5c37d8232ae2de13L);
   try {
      MediaDrm wvDrm = new MediaDrm(wideVineUuid);
      byte[] wideVineId = wvDrm.getPropertyByteArray(MediaDrm.PROPERTY_DEVICE_UNIQUE_ID);
      Base64.Encoder enc = Base64.getEncoder();
      String encodedUid = enc.encodeToString(wideVineId);
      return encodedUid;
   } catch (Exception e) {
      return initialVal;
   }
}

#End If