java - 类 'Anonymous class derived from AdListener' 必须声明为抽象类或实现抽象方法 'onLoggingImpressionMethod(Ad)'

Question

错误:

Class 'Anonymous class derived from AdListener' must either be declared abstract or implement abstract method 'onLoggingImpressionMethod(Ad)' in 'AdListener'

这是我的代码:

    private void setUpFacebookAD() {
        //AdSettings.addTestDevice("ae869b4a0e40ebbea07dafaabd9690aa");
        mFBNativeAd = new NativeAd(context, "xxxxxxxxxxxxxxx_xxxxxxxxxxxxxxx");
        mFBNativeAd.setAdListener(new com.facebook.ads.AdListener() {

            @Override
            public void onError(Ad ad, AdError error) {
                // Ad error callback
                Log.i("fb native ad","on Error" + " "+ error.getErrorMessage());
            }

            @Override
            public void onAdLoaded(Ad ad) {
                // Ad loaded callback
                Log.i("FB native ad ", "On Ad loaded");
                notifyDataSetChanged();

            }

            @Override
            public void onAdClicked(Ad ad) {
                // Ad clicked callback
                Log.i("FB natvie Ad" , "onAd clicked");
            }
        });
        mFBNativeAd.loadAd(NativeAd.MediaCacheFlag.ALL);
    }

com.facebook.ads.AdListener 带有红色下划线。我尝试将其缩减为仅 AdListener，但仍然出现错误。是我升级了jdk版本和JDK的位置后才出现的。在升级之前，代码可以正常工作。我怎样才能让它发挥作用？

Answer 1

错误消息准确地告诉您解决问题必须执行的操作:实现一个带有签名 'onLoggingImpressionMethod(Ad) 的方法.如果将插入符号移动到显示 new com.facebook.ads.AdListener() 的行, 您可以按 Alt-Enter 并从弹出菜单中选择自动为您插入此方法。