How to share the image of the game icon with the PlayStore link?

I have researched a lot about it and the only thing I find is tutorials on how to share the screenshot with some text. However, instead of sharing the screenshot I would like to share the image of the icon of my game. I found this site the code below that worked great for sharing screenshot. How do I instead of being the screenshot to use a predefined image?

using UnityEngine;
using System.Collections;
using System.IO;
using System.Runtime.InteropServices;
public class NativeShare : MonoBehaviour
{
    public string subject, ShareMessage, url;
    private bool isProcessing = false;
    public string ScreenshotName = "screenshot.png";
    public void ShareScreenshotWithText()
    {
        // Share();
    }
    public void Share()
    {
#if UNITY_ANDROID
        if (!isProcessing)
            StartCoroutine(ShareScreenshot());
#elif UNITY_IOS
if(!isProcessing)
StartCoroutine( CallSocialShareRoutine() );
#else
Debug.Log("No sharing set up for this platform.");
#endif
    }
#if UNITY_ANDROID
    public IEnumerator ShareScreenshot()
    {
        isProcessing = true;
        // wait for graphics to render
        yield return new WaitForEndOfFrame();
        string screenShotPath = Application.persistentDataPath + "/" + ScreenshotName;
        ScreenCapture.CaptureScreenshot(ScreenshotName);
        yield return new WaitForSeconds(1f);
        if (!Application.isEditor)
        {
            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("android.net.Uri");
            AndroidJavaObject uriObject = uriClass.CallStatic<AndroidJavaObject>("parse", "file://" + screenShotPath);
            intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_STREAM"), uriObject);
            intentObject.Call<AndroidJavaObject>("setType", "image/png");
            intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), ShareMessage);
            AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
            AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");
            AndroidJavaObject jChooser = intentClass.CallStatic<AndroidJavaObject>("createChooser", intentObject, "YO! I Love Who Lurks!");
            currentActivity.Call("startActivity", jChooser);
        }
        isProcessing = false;
    }
#endif
#if UNITY_IOS
public struct ConfigStruct
{
public string title;
public string message;
}
[DllImport ("__Internal")] private static extern void showAlertMessage(ref ConfigStruct conf);
public struct SocialSharingStruct
{
public string text;
public string url;
public string image;
public string subject;
}
[DllImport ("__Internal")] private static extern void showSocialSharing(ref SocialSharingStruct conf);
public void CallSocialShare(string title, string message)
{
ConfigStruct conf = new ConfigStruct();
conf.title = title;
conf.message = message;
showAlertMessage(ref conf);
isProcessing = false;
}
public static void CallSocialShareAdvanced(string defaultTxt, string subject, string url, string img)
{
SocialSharingStruct conf = new SocialSharingStruct();
conf.text = defaultTxt; 
conf.url = url;
conf.image = img;
conf.subject = subject;
showSocialSharing(ref conf);
}
IEnumerator CallSocialShareRoutine()
{
isProcessing = true;
string screenShotPath = Application.persistentDataPath + "/" + ScreenshotName;
Application.CaptureScreenshot(ScreenshotName);
yield return new WaitForSeconds(1f);
CallSocialShareAdvanced(ShareMessage, subject, url, screenShotPath);
}
#endif
}