C# 无法从'；GoogleMobileAds.Api.interstitalad'；至'；字符串'；

我遇到了以下错误： Assets\Find The Pairs\Scripts\AdsManager.cs（54,43）：错误CS1503:参数1:无法从“GoogleMobileAds.Api.Interstitalad”转换为“string” 使用以下代码：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using GoogleMobileAds.Api;

public class AdsManager : MonoBehaviour
{
    public static AdsManager instance;

    private string appID = "ca-app-pub-3940256099942544~3347511713";

    private BannerView bannerView;
    private string bannerID = "ca-app-pub-3940256099942544/6300978111";

    private InterstitialAd fullScreenAd;
    private string fullScreenAdID = "ca-app-pub-3940256099942544/1033173712";

    private void Awake()
    {
        if (instance == null)
        {
            instance = this;
        }
        else
        {
            Destroy(this);
        }
    }

    private void Start()
    {
        RequestFullScreenAd();
    }

    public void RequestBanner()
    {
        bannerView = new BannerView(bannerID, AdSize.Banner, AdPosition.Bottom);

        AdRequest request = new AdRequest.Builder().Build();

        bannerView.LoadAd(request);

        bannerView.Show();
    }

    public void HideBanner()
    {
        bannerView.Hide();
    }

    public void RequestFullScreenAd()
    {

        fullScreenAd = new InterstitialAd(fullScreenAd);

        AdRequest request = new AdRequest.Builder().Build();

        fullScreenAd.LoadAd(request);

    }

    public void ShowFullScreenAd()
    {
        if (fullScreenAd.IsLoaded())
        {
            fullScreenAd.Show();
        }
        else
        {
            Debug.Log("Full Screen Ad Not Loaded");
        }
    }

}

我得到这个错误： Assets\Find The Pairs\Scripts\AdsManager.cs（54,43）：错误CS1503:参数1:无法从“GoogleMobileAds.Api.Interstitalad”转换为“string”

我需要帮助

public void RequestFullScreenAd()
    {

        fullScreenAd = new InterstitialAd(fullScreenAd);

        AdRequest request = new AdRequest.Builder().Build();

        fullScreenAd.LoadAd(request);

    }

创建新的Interstitalad对象时，您试图将Interstitalad对象作为字符串参数传递。它需要一个声明为fullScreenAdID的id（字符串）。所以

public void RequestFullScreenAd()
    {

        fullScreenAd = new InterstitialAd(fullScreenAdID);

        AdRequest request = new AdRequest.Builder().Build();

        fullScreenAd.LoadAd(request);

    }

应该有用