Share image on selected media

I want to share image on selected media that I capture through code.

At present I have following code to capture image

     private void CaptureScreenShot()
     {
         Texture2D tex = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, false);
         if (tex != null)
         {
             tex.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0, false);
             tex.Apply();
             var bytes = tex.EncodeToPNG();
             if (bytes.Length > 0)
             {
                 Debug.Log("Texture got");
                 SaveTextureToFile(tex,"text.png");
             }
         }
     }
 
 
     private void SaveTextureToFile(Texture2D tex,string fileName)
     {
         var bytes = tex.EncodeToPNG();
         var file = File.Open(pathToImage,FileMode.Create);
         var binary = new BinaryWriter(file);
         binary.Write(bytes);
         file.Close();
     }

Code for sharing image through intent

             AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");
             AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");
             intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND_MULTIPLE"));
             intentObject.Call<AndroidJavaObject>("setType", "*/*");
             intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_SUBJECT"), "SUBJECT");
             intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), "This is my text to send.");
             intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_STREAM"), new Uri(pathToImage).LocalPath);
 
             
             AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
             AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");
             currentActivity.Call("startActivity", intentObject);

Above code not able to work for me. Only text message is pass through social media.

I referenced following link to share image Problems sharing combined text and image with SHARE INTENT on Twitter

Please give some advice in this.