前言：Unity接入Admob的方式，有详细的官方文档https://developers.google.com/admob/unity/quick-start?hl=zh-cn这个对接应该没啥问题，但是如果要用Android原生的方式对接在Unity项目中对接需要怎么做呢。具体逻辑也就是在Unity中触发Android的方法，然后在Android中通知Unity。应该有很多会选择把Unity项目导出Android项目，然后在Android Studio里面开发。这么做的话，如果Unity中有什么改动，都需要每次导出，这样非常的不友好。我们把对接Admob打包为一个Android依赖库，这样我们改动也互不影响。接下来看我们需要怎么做吧。
创建一个Android项目，新建一个AdMobPlugin的AndroidLibrary
新建一个AdMobManager管理广告
package com.unitygame.admobplugin;
import android.app.Activity;
import android.util.Log;
import androidx.annotation.NonNull;
import com.applovin.impl.sdk.o.DDMob;
import com.applovin.impl.sdk.o.ad.FullScreenAdCallback;
import com.google.android.gms.ads.AdError;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.FullScreenContentCallback;
import com.google.android.gms.ads.LoadAdError;
import com.google.android.gms.ads.OnUserEarnedRewardListener;
import com.google.android.gms.ads.rewarded.RewardItem;
import com.google.android.gms.ads.rewarded.RewardedAd;
import com.google.android.gms.ads.rewarded.RewardedAdLoadCallback;
import com.google.android.gms.ads.MobileAds;
import com.unity3d.player.UnityPlayer;
import java.lang.reflect.Method;
public class AdMobManager {
private static final String TAG = "AdMobManager";
private Activity mActivity;
private RewardedAd mRewardedAd;
private String unityGameObjectName;
private String AD_UNIT_ID = "ca-app-pub-3940256099942544/5224354917";
public AdMobManager(Activity activity, String unityGameObjectName) {
this.mActivity = activity;
this.unityGameObjectName = unityGameObjectName;
new Thread(
() -> {
// Initialize the Google Mobile Ads SDK on a background thread.
MobileAds.initialize(activity, initializationStatus -> {});
})
.start();
DDMob.init(activity, "61a33b2a0661d0b46a6a8a7b690588d7");
}
public void loadRewardedAd() {
if (mRewardedAd != null) {
mRewardedAd = null;
}
mActivity.runOnUiThread(() -> {
// Load AdMob Rewarded Ad here
RewardedAd.load(mActivity, AD_UNIT_ID, new AdRequest.Builder().build(), new RewardedAdLoadCallback() {
@Override
public void onAdLoaded(RewardedAd ad) {
mRewardedAd = ad;
Log.d(TAG, "Ad loaded.");
}
@Override
public void onAdFailedToLoad(LoadAdError adError) {
Log.d(TAG, "Failed to load ad: " + adError.getMessage());
mRewardedAd = null;
}
});
});
}
public void showRewardedAd() {
if (mRewardedAd != null) {
mRewardedAd.setFullScreenContentCallback(new FullScreenAdCallback(mRewardedAd) {
@Override
public void onShowed() {
// Called when ad is shown.
Log.d(TAG, "FullScreenAdCallback onShowed");
}
@Override
public void onImpression() {
// Called when an impression is recorded for an ad.
Log.d(TAG, "FullScreenAdCallback onImpression");
}
@Override
public void onFailedToShow(@NonNull AdError error) {
// Called when ad fails to show.
Log.d(TAG, "FullScreenAdCallback onFailedToShow");
loadRewardedAd();
}
@Override
public void onDismissed() {
// Called when ad is dismissed.
Log.d(TAG, "FullScreenAdCallback onDismissed");
loadRewardedAd();
}
@Override
public void onClicked() {
// Called when a click is recorded for an ad.
Log.d(TAG, "FullScreenAdCallback onClicked");
}
});
mActivity.runOnUiThread(() -> {
mRewardedAd.show(mActivity, new OnUserEarnedRewardListener() {
@Override
public void onUserEarnedReward(@NonNull RewardItem reward) {
// Notify Unity of the reward
UnityPlayer.UnitySendMessage(unityGameObjectName, "OnUserEarnedReward", reward.getType() + "," + reward.getAmount());
/*try {
// 获取 UnityPlayer 类
Class<?> unityPlayerClass = Class.forName("com.unity3d.player.UnityPlayer");
// 获取 currentActivity 静态字段
Object currentActivity = unityPlayerClass.getField("currentActivity").get(null);
// 获取 UnitySendMessage 静态方法
Method unitySendMessageMethod = unityPlayerClass.getMethod("UnitySendMessage", String.class, String.class, String.class);
// 构造传递给 Unity 的消息
String message = reward.getType() + "," + reward.getAmount();
// 调用 UnitySendMessage 方法
unitySendMessageMethod.invoke(null, unityGameObjectName, "OnUserEarnedReward", message);
} catch (Exception e) {
e.printStackTrace();
}*/
}
});
});
} else {
Log.d(TAG, "The rewarded ad wasn't loaded yet.");
loadRewardedAd();
}
}
}
DDMob是我们一个运营统计的库，这个可以直接删除。setFullScreenContentCallback这个监听用Admob的即可
配置build.gradle
implementation 'com.google.android.gms:play-services-ads:23.3.0'
implementation 'com.example.mylibrary:unitycls:1.0.0'
implementation 'com.example.mylibrary:unitycls:1.0.0'这个是我本地的maven库，里面包含了unity-classes.jar 为了防止UnityPlayer找不到而无法打包aar，如何直接加到项目当中，因为Unity项目构建的时候就包含了这个jar,为了防止类冲突，所以放在了本地Maven,这样打包的时候不会把jar打包进去，可以Unity项目导出Android项目在项目里面找到这个unity-classes.jar，放在你的本地Maven中，本地Maven的方式可以看我之前的文章里面有教程，也可以使用我注释的反射的方式来调用。
最终我们打包了AdMobPlugin.aar。将AdMobPlugin.aar放在本地Maven当中，因为在Unity构建的时候，aar文件是无法直接打包构建的。
Unity中调用
将打包的AdMobPlugin.aar在Unity的launcherTemplate中引用。
implementation 'com.google.android.gms:play-services-ads:23.3.0'
implementation 'com.example.mylibrary:admobplugin:1.0.0'
注意这里需要加上implementation 'com.google.android.gms:play-services-ads:23.3.0'的引用，因为我们打包的aar里面，远程依赖库是无法打包在aar库里面的。
LauncherManifest中加上你的APPLICATION_ID
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-2853159195783569~8887651234"/>
在你的启动场景中加上一个AdManager空对象，新建AdManager脚本挂载到这个空对象中。
using UnityEngine;
using System;
public class AdManager : MonoBehaviour
{
public static AdManager Instance { get; private set; }
private AndroidJavaObject adMobManager;
public event Action OnCustomEvent;
void Awake()
{
if (Instance == null)
{
Instance = this;
DontDestroyOnLoad(gameObject);
using (var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
{
var activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
adMobManager = new AndroidJavaObject("com.unitygame.admobplugin.AdMobManager", activity, gameObject.name);
}
}
else
{
Destroy(gameObject);
}
}
public void ShowRewardedAd()
{
Debug.Log("Unity显示广告");
adMobManager.Call("showRewardedAd");
}
public void LoadRewardedAd(){
Debug.Log("Unity加载广告");
adMobManager.Call("loadRewardedAd");
}
// This method will be called from the Android plugin
public void OnUserEarnedReward(string rewardTypeAndAmount)
{
// Split the rewardTypeAndAmount to get type and amount
var parts = rewardTypeAndAmount.Split(',');
var rewardType = parts[0];
var rewardAmount = int.Parse(parts[1]);
Debug.Log($"User earned reward: Type = {rewardType}, Amount = {rewardAmount}");
OnCustomEvent?.Invoke();
// Handle the reward here (e.g., update player's balance)
}
}
最后在你的场景中去监听广告播放完毕的回调和触发广告的播放，并处理相关的逻辑，以下是我的示例：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class AdManagerHome : MonoBehaviour
{
public Text goldtext;
void Start()
{
LoadRewardedAd();
// 注册当前场景的回调函数
if (AdManager.Instance != null)
{
AdManager.Instance.OnCustomEvent += HandleEvent;
}
}
// 回调函数，处理当前场景的逻辑
private void HandleEvent()
{
Debug.Log("我是收到的回调");
// 在这里编写该场景特有的逻辑
}
public void LoadRewardedAd()
{
AdManager.Instance.LoadRewardedAd();
}
public void ShowRewardedAd()
{
AdManager.Instance.ShowRewardedAd();
}
private void OnDestroy() {
// 当场景切换时，取消注册回调
if (AdManager.Instance != null)
{
AdManager.Instance.OnCustomEvent -= HandleEvent;
}
}
}
以上就是完整的Android的Abmob在Unity项目中的使用了，希望可以给你们带来帮助。
