Version: v2.0

PremiumAds Google AdMob Adapter V2 — Cocos2d-x

Integrate PremiumAds as a mediation ad source in your Cocos2d-x C++ game. The adapter is a Google AdMob mediation custom event — your game continues to call Google Mobile Ads SDK to load ads; AdMob's waterfall picks PremiumAds when configured.

Supported formats: Banner (incl. MREC 300×250, Leaderboard, Adaptive), Interstitial, Rewarded, Rewarded Interstitial, Native, App Open

Reference repo: premium-ads/googleads-adapter-v2-cocos2dx

Prerequisites

Requirement	Version
Cocos2d-x	3.15.x (tested 3.15.1)
Android Studio	Hedgehog or newer
Android Gradle Plugin	8.2.2+
Gradle	8.2+
Android NDK	r25c or newer (tested r27)
Android `minSdk`	`21`
Xcode	15+ (tested 17)
iOS deployment target	13.0+
Google Mobile Ads SDK (Android)	`play-services-ads:22.2.0`+ (23.6.0+ recommended; 22.x needs adapter 1.0.11+)
Google Mobile Ads SDK (iOS)	`Google-Mobile-Ads-SDK ~> 13.0`

Cocos2d-x 3.15.1 is from 2017 and requires toolchain modernization patches to build under modern Xcode/Android Studio (AGP 8 + Gradle 8 + NDK 27 on Android; deployment target 13.0 + a prebuilt-arch helper on iOS). The reference repo ships these patches inline so you can clone and build directly.

1. Copy the Plugin Files into Your Project

From the reference repo, copy two folders into your Cocos2d-x project's Classes/:

Classes/PremiumAdsAdapter/ — the plugin (1 method: setDebug())
Classes/AdMobBridge/ — the hand-rolled GMA C++ bridge for all 6 ad formats

YourGame/
├── Classes/
│   ├── PremiumAdsAdapter/PremiumAdsAdapter.{h,cpp}
│   └── AdMobBridge/
│       ├── AdMobBridgeCpp.h
│       ├── Banner.{h,cpp}
│       ├── Interstitial.{h,cpp}
│       ├── Rewarded.{h,cpp}
│       ├── RewardedInterstitial.{h,cpp}
│       ├── AppOpen.{h,cpp}
│       └── NativeAd.{h,cpp}

Also copy the matching native peers:

Android Java: proj.android-studio/app/src/main/java/net/premiumads/cocos2dx/ (one bridge class per format)
iOS Obj-C++: proj.ios_mac/ios/{PremiumAdsAdapter,AdMobBridge}/ (.h + .mm)
Android layout: proj.android-studio/app/src/main/res/layout/native_ad_template.xml (Native ad template)

2. Android — Gradle Dependencies

proj.android-studio/build.gradle

allprojects {
    repositories {
        google()
        mavenCentral()
        maven { url 'https://repo.premiumads.net/artifactory/mobile-ads-sdk/' }
    }
}

proj.android-studio/app/build.gradle

android {
    namespace 'com.your.package'
    compileSdkVersion 34
    ndkVersion "27.0.12077973"

    defaultConfig {
        applicationId 'com.your.package'
        minSdkVersion 21
        targetSdkVersion 34
        multiDexEnabled true
        externalNativeBuild {
            ndkBuild { abiFilters 'armeabi-v7a', 'arm64-v8a' }
        }
    }
}

dependencies {
    implementation 'androidx.appcompat:appcompat:1.6.1'
    implementation 'com.google.android.gms:play-services-ads:23.6.0'
    implementation 'net.premiumads.sdk:admob-adapter-v2:1.0.12'
}

3. Android — Manifest & Application init

AndroidManifest.xml (note: AdMob meta-data must be at <application> level, not <activity>):

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-feature android:glEsVersion="0x00020000" android:required="true"/>

    <application android:name=".MainApplication" ...>
        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="ca-app-pub-XXXXXXXXXXXXXXXX~YYYYYYYYYY" />
        <meta-data
            android:name="android.app.lib_name"
            android:value="cocos2dcpp"/>
        <activity
            android:name="com.google.android.gms.ads.AdActivity"
            android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
            android:theme="@android:style/Theme.Translucent" />
    </application>
</manifest>

MainApplication.java — initialize MobileAds before the Cocos2d-x activity starts:

package com.your.package;

import androidx.multidex.MultiDexApplication;
import com.google.android.gms.ads.MobileAds;

public final class MainApplication extends MultiDexApplication {
    @Override public void onCreate() {
        super.onCreate();
        MobileAds.initialize(this, status -> { /* ready */ });
    }
}

4. Android — `Android.mk`

Add the bridge sources to LOCAL_SRC_FILES and use LOCAL_WHOLE_STATIC_LIBRARIES so engine JNI symbols are exported in the final libcocos2dcpp.so:

LOCAL_SRC_FILES += $(LOCAL_PATH)/../../../../../Classes/PremiumAdsAdapter/PremiumAdsAdapter.cpp
LOCAL_SRC_FILES += $(LOCAL_PATH)/../../../../../Classes/AdMobBridge/Banner.cpp
LOCAL_SRC_FILES += $(LOCAL_PATH)/../../../../../Classes/AdMobBridge/Interstitial.cpp
LOCAL_SRC_FILES += $(LOCAL_PATH)/../../../../../Classes/AdMobBridge/Rewarded.cpp
LOCAL_SRC_FILES += $(LOCAL_PATH)/../../../../../Classes/AdMobBridge/RewardedInterstitial.cpp
LOCAL_SRC_FILES += $(LOCAL_PATH)/../../../../../Classes/AdMobBridge/AppOpen.cpp
LOCAL_SRC_FILES += $(LOCAL_PATH)/../../../../../Classes/AdMobBridge/NativeAd.cpp

LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../../../../Classes/AdMobBridge \
                    $(LOCAL_PATH)/../../../../../Classes/PremiumAdsAdapter

LOCAL_WHOLE_STATIC_LIBRARIES := cocos2dx_static

5. iOS — Podfile

platform :ios, '13.0'
use_frameworks!

target 'YourGame-mobile' do
    pod 'Google-Mobile-Ads-SDK', '~> 13.0'
    pod 'PremiumAdsGoogleAdapter', '~> 1.0.10'
end

Run pod install.

6. iOS — Info.plist & AppDelegate

Add to Info.plist:

<key>GADApplicationIdentifier</key>
<string>ca-app-pub-XXXXXXXXXXXXXXXX~YYYYYYYYYY</string>
<key>NSUserTrackingUsageDescription</key>
<string>This identifier will be used to deliver personalized ads to you.</string>
<key>SKAdNetworkItems</key>
<array>
  <!-- See https://developers.google.com/admob/ios/ios14 for the canonical list. -->
</array>

In AppDelegate.m / AppController.mm — initialize MobileAds before Cocos2d-x bootstraps:

#import <GoogleMobileAds/GoogleMobileAds.h>

- (BOOL)application:(UIApplication *)application
    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [GADMobileAds.sharedInstance startWithCompletionHandler:nil];
    // ... existing Cocos2d-x bootstrap
    return YES;
}

7. Use the C++ API in Your Game

#include "PremiumAdsAdapter/PremiumAdsAdapter.h"
#include "AdMobBridge/Banner.h"
#include "AdMobBridge/Interstitial.h"
#include "AdMobBridge/Rewarded.h"

// Once at app start (verbose adapter logs):
premiumads::PremiumAdsAdapter::setDebug(true);

// Banner
admob::Banner::setListener([](admob::BannerEvent e, const std::string& m) {
    cocos2d::log("[Banner] event=%d %s", (int)e, m.c_str());
});
admob::Banner::create("ca-app-pub-XXX/YYY",
    admob::BannerSize::MediumRectangle_300x250,   // or Banner_320x50, Leaderboard_728x90, Adaptive
    admob::BannerPosition::Bottom);

// Interstitial (load → show pattern)
admob::Interstitial::setListener(...);
admob::Interstitial::load("ca-app-pub-XXX/YYY");
// later, when you want to display:
if (admob::Interstitial::isReady()) admob::Interstitial::show();

// Rewarded — same pattern, listener also receives UserEarnedReward(7) with msg "type|amount"
admob::Rewarded::load("ca-app-pub-XXX/YYY");
admob::Rewarded::show();

// NativeAd — bind() overlays a native UIView/FrameLayout at game-coords
admob::NativeAd::load("ca-app-pub-XXX/YYY");
// after Loaded event:
admob::NativeAd::bind(designX, designY, designW, designH);

8. Configure AdMob Custom Event

For each ad unit you want to mediate through PremiumAds, add a custom event in the AdMob console:

Field	Value
Class name (Android)	`net.premiumads.sdk.adapter.PremiumAdsAdapter`
Class name (iOS)	`PremiumAdsAdapter`
Parameter	PremiumAds Adunit
eCPM	start at $0.10 to test, then tune

After publishing the mediation change (5–30 min propagation), filter logs for [PremiumAdsAdapter]. If you see the line, the waterfall reached PremiumAds.

Troubleshooting

UnsatisfiedLinkError: nativeSetAudioDeviceInfo at boot: the manifest's android.app.lib_name meta-data must be a child of <application>, NOT <activity>. Cocos2dxActivity.onLoadNativeLibraries() reads it via PackageManager.GET_META_DATA on ApplicationInfo.
JNI symbols missing despite .so build success: use LOCAL_WHOLE_STATIC_LIBRARIES := cocos2dx_static (not LOCAL_STATIC_LIBRARIES) so engine symbols stay in the final dynamic export table.
iOS link fails with "building for 'iOS-simulator', but linking in object file built for 'iOS'": Cocos2d-x 3.15.1 ships prebuilt third-party libs as arm64-iphoneos only. Run the reference repo's tools/strip-prebuilt-platform.sh once after symlinking the engine — it strips LC_VERSION_MIN_IPHONEOS from prebuilt arm64 objects so ld treats them as platform-neutral, and patches the two iOS 26 SDK source compatibility issues (CCFontAtlas.cpp iconv_t cast + CCFileUtils.cpp system() guard).
HelloWorld::init() SIGSEGV on modern NDK: the stock cocos2d-x 3.15.1 template scene crashes on NDK 27. Replace with your own scene or copy the reference repo's HelloWorldScene.cpp.
Adapter never appears in MobileAds.initialize adapter map: confirm the AAR/Pod is actually linked (./gradlew :app:dependencies | grep premium, pod list | grep PremiumAds).

What gets shipped

PremiumAds Cocos2d-x integration is mediation custom-event only — your game continues to use Google Mobile Ads SDK directly. The adapter activates only when AdMob's waterfall picks it for a given ad unit. No code changes to your existing ad loading logic are required beyond installing the plugin.

Demo project

Clone the reference repo for a working sample with all 6 formats wired up:

git clone https://github.com/premium-ads/googleads-adapter-v2-cocos2dx.git
cd googleads-adapter-v2-cocos2dx
ln -s ~/cocos-installs/cocos2d-x-cocos2d-x-3.15.1 cocos2d

# Android
cd proj.android-studio && ./gradlew assembleDebug

# iOS — Apple Silicon Mac simulator: run the platform-strip script first
cd .. && bash tools/strip-prebuilt-platform.sh
cd proj.ios_mac/ios && pod install
xcodebuild -workspace GoogleAdsCocos2dxSample.xcworkspace \
           -scheme GoogleAdsCocos2dxSample-mobile \
           -sdk iphonesimulator build CODE_SIGNING_ALLOWED=NO

Prerequisites​

1. Copy the Plugin Files into Your Project​

2. Android — Gradle Dependencies​

3. Android — Manifest & Application init​

4. Android — Android.mk​

5. iOS — Podfile​

6. iOS — Info.plist & AppDelegate​

7. Use the C++ API in Your Game​

8. Configure AdMob Custom Event​

Troubleshooting​

What gets shipped​

Demo project​