NativeGalleryForExplore.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;

public class NativeGalleryForExplore : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        PhotoCameraUI.OnStartTakingPhoto += this.onStartPhoto;
        PhotoCameraUI.OnCompleteSavePhoto += this.onCompleteSavePhoto;
        PhotoCameraUI.SaveOverride += this.SaveOverride;

    }

    private void SaveOverride(Texture2D txt, string name)
    {
        Debug.Log("Texturename " + name);

        var p=NativeGallery.SaveImageToGallery(txt, "Explore", name, (bool success, string finalPath) => {

            Debug.Log("SUCCESS? " + success);
            Debug.Log(finalPath);
        });
        Debug.Log("permissions: " + p);
    }
    private void onCompleteSavePhoto(string path)
    {
        //DO SOMETHING HERE IF YOU WANT
    }

    private void onStartPhoto()
    {
        //DO SOMETHING HERE IF YOU WANT
    }
}