Unity Ads 无法显示广告:webapp 未初始化

Unity Ads cannot show ads: webapp not initialized

我下载了最新的 Unity Ads SDK and followed the instructions 以将其集成到我的 android 应用程序中。

UnityAds.init(this, "xxxxxxx", null);

初始化成功,日志显示广告已下载。

Initializing Unity Ads version 1508 with gameId xxxxxxx

Requesting Unity Ads ad plan from https://xxxxxxx

Unity Ads initialized with 3 campaigns and 2 zones

Unity Ads cache: File /storage/xxxxxxx/yyyyyyy.mp4 of 1445875 bytes downloaded in 9102ms

我尝试展示广告:

if (UnityAds.canShow()) {
    UnityAds.show();
}

然后出现这个错误信息:

Unity Ads cannot show ads: webapp not initialized

我错过了什么?

错误是IUnityAdsListener(第三个初始化参数)是必需的,不能为空。

修复方法是将侦听器添加到 init 方法,如下所示:

UnityAds.init(this, "xxxxxxx", new IUnityAdsListener() {
    @Override
    public void onHide() {
    }

    @Override
    public void onShow() {
    }

    @Override
    public void onVideoStarted() {
    }

    @Override
    public void onVideoCompleted(String s, boolean b) {
    }

    @Override
    public void onFetchCompleted() {
    }

    @Override
    public void onFetchFailed() {
    }
});