c# - unity RewardAd 函数调用更多的时间不只是一次

Question

我想在我的游戏中使用 RewardAd。当您观看视频时，您会得到当前分数的 +10 分，而不是您的最高分。

你的高分是 45，现在是 37，所以你看视频的分数是 +10，你的高分是 47，这很好。但如果你再做一次，视频会给你+20分？!以及后面的时间+30等等。

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

public class RewardAd : MonoBehaviour {

    public int highscore;
    public int score;
    public static GameObject drawscore_obj;
    public RewardBasedVideoAd rewardBasedVideo = null;
    public string adUnitId;

    void Start()
    {
        rewardBasedVideo = null;
        GetComponent<SpriteRenderer> ().enabled = false;
        //highscore = PlayerPrefs.GetInt ("highscore");
        adUnitId = "ca-app-pub-2879768424205988/1590886374";
        rewardBasedVideo = RewardBasedVideoAd.Instance;
        AdRequest request = new AdRequest.Builder().Build();
        rewardBasedVideo.LoadAd(request, adUnitId);
        rewardBasedVideo.OnAdRewarded += HandleRewardBasedVideoRewarded;
    }
    void Update()
    {
        if (GameOverScript.GameOver) 
        {
            GetComponent<SpriteRenderer> ().enabled = true;
        }
    }

    void OnMouseDown()
    {
        showAdd(rewardBasedVideo);
    }

    private void showAdd(RewardBasedVideoAd rewardBasedVideo)
    {
        if (rewardBasedVideo.IsLoaded())
        {
            if (GameOverScript.GameOver) 
            {
                rewardBasedVideo.Show ();
            }
        }
    }

    public void HandleRewardBasedVideoRewarded(object sender, Reward args)
    {   
        highscore = PlayerPrefs.GetInt ("highscore");

        if ((Controll.points + 10) > highscore) 
        {
            Controll.points += 10;
            if(Controll.points > highscore)
            {
                PlayerPrefs.SetInt ("highscore", highscore);
            }
        }
    }
}

Answer 1

如果你看一下这个方法:

private void showAdd(RewardBasedVideoAd rewardBasedVideo)
{
    if (rewardBasedVideo.IsLoaded())
    {
        if (GameOverScript.GameOver) 
        {
            rewardBasedVideo.Show ();
            rewardBasedVideo.OnAdRewarded += HandleRewardBasedVideoRewarded;
        }
    }
}

每次调用时，它都会向OnAdRewarded 添加另一个HandleRewardBasedVideoRewarded 的监听器。所以，第一次它会调用一次HandleRewardBasedVideoRewarded；第二次两次；等等。

通常，您只会添加一次监听器:

void Start()
{
    rewardBasedVideo = null;
    GetComponent<SpriteRenderer> ().enabled = false;
    //highscore = PlayerPrefs.GetInt ("highscore");
    adUnitId = "ca-app-pub-2**97684242*****/15*08*****";
    rewardBasedVideo = RewardBasedVideoAd.Instance;
    AdRequest request = new AdRequest.Builder().Build();
    rewardBasedVideo.LoadAd(request, adUnitId);

    // Add a listener only when the script is loaded
    rewardBasedVideo.OnAdRewarded += HandleRewardBasedVideoRewarded;
}

private void showAdd(RewardBasedVideoAd rewardBasedVideo)
{
    if (rewardBasedVideo.IsLoaded())
    {
        if (GameOverScript.GameOver) 
        {
            rewardBasedVideo.Show ();
        }
    }
}