How can i make a ScreenShot and Share button in unity for AR(ARCORE)

I am making an AR app. I just want to add a share button before publishing it… but I can’t I tried so many methods but none work for AR(ARCORE) Plz tell me how to do it.
I even bought some plugins but they don’t seem to work in AR.
ANY help will be appreciated.,I am really stuck on this part I have to publish today so plz help me out ASAP.

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System.IO;

public class ShareScreenshot : MonoBehaviour {
 private bool isProcessing = false;
 public float startX;
 public float startY;
 public int valueX;
 public int valueY;
 public void shareScreenshot(){
  if(!isProcessing && GameObject.Find("Ask Friend").GetComponent<Image>().enabled)
   StartCoroutine( captureScreenshot() );
 public IEnumerator captureScreenshot(){
  isProcessing = true;
  yield return new WaitForEndOfFrame();
  Texture2D screenTexture = new Texture2D(Screen.width*valueX/10000, Screen.height*valueY/10000,TextureFormat.RGB24,true);
  // put buffer into texture
  //screenTexture.ReadPixels(new Rect(0f, 0f, Screen.width, Screen.height),0,0);
  //create a Rect object as per your needs.
  screenTexture.ReadPixels(new Rect
                           (Screen.width*startX, (Screen.height*startY), Screen.width*valueX/10000, Screen.height*valueY/10000),0,0);
  // apply
  //----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PHOTO
  //byte[] dataToSave = Resources.Load<TextAsset>("everton").bytes;
  byte[] dataToSave = screenTexture.EncodeToPNG();
  string destination = Path.Combine(Application.persistentDataPath,System.DateTime.Now.ToString("yyyy-MM-dd-HHmmss") + ".png");
  File.WriteAllBytes(destination, dataToSave);
   // block to open the file and share it ------------START
   AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");
   AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");
   intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND"));
   AndroidJavaClass uriClass = new AndroidJavaClass("");
   AndroidJavaObject uriObject = uriClass.CallStatic<AndroidJavaObject>("parse","file://" + destination);
   intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_STREAM"), uriObject);
   intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), "Which Football Club does this Rebus represent?

" +
“Download the game on play store at “+””);
intentObject.Call(“putExtra”, intentClass.GetStatic(“EXTRA_SUBJECT”), “Which club is this?”);
intentObject.Call(“setType”, “image/jpeg”);
AndroidJavaClass unity = new AndroidJavaClass(“com.unity3d.player.UnityPlayer”);
AndroidJavaObject currentActivity = unity.GetStatic(“currentActivity”);

   // option one WITHOUT chooser:
   currentActivity.Call("startActivity", intentObject);
   // block to open the file and share it ------------END
  isProcessing = false;
  1. Create a C# script named ShareScreenshot and paste the below code to it:
  2. Attach the script to Main Camera or any object that is present on the scene.
  3. Call the shareScreenshot() method on click of a button.