Snaparazzi/Assets/Scripts/PropositionHandler.cs

using Firebase.Database;
using Newtonsoft.Json;
using System.Collections.Generic;
using System.Linq;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

public class PropositionHandler : MonoBehaviour
{
    public GameManager gameManager;
    public StorageManager storageManager;
    public TextMeshProUGUI promptLabel;
    public PromptList prompts;
    public Image[] btns;

    public void ShowQuestion(Question currentQuestion)
    {
        List<Proposition> props = currentQuestion.propositions.Values.ToList();
        promptLabel.text = prompts.GetPromptById(currentQuestion.promptId).en;

        for (int i = 0; i < 2; i++)
        {
            StorageManager.ConvertGoogleStorageURLToHttpsUrl(props[i].photoUrl, _httpURL =>
            {
                StartCoroutine(StorageManager.DownloadImage_Coroutine(_httpURL, (Texture texture) =>
                {
                    Sprite sprite = Sprite.Create(texture as Texture2D, new Rect(0, 0, texture.width, texture.height), Vector2.zero);
                    btns[i].sprite = sprite;
                }));
            });
        }
    }

}