09-17 10:16:42.906 25093-25126/com.google.ads.rewardedvideoexample W/Ads: Fail to instantiate adapter com.google.DummyAdapter
android.os.RemoteException
at com.google.android.gms.internal.ads.zzxm.zz
bp
(Unknown Source:132)
at com.google.android.gms.internal.ads.zzxm.zzbo(Unknown Source:122)
at com.google.android.gms.internal.ads.zzxm.zzbm(Unknown Source:0)
at com.google.android.gms.internal.ads.zzago.zzca(Unknown Source:24)
at com.google.android.gms.internal.ads.zzahx.zzdn(Unknown Source:81)
at com.google.android.gms.internal.ads.zzajy.run(Unknown Source:11)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:457)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)
09-17 10:16:42.915 25093-25093/com.google.ads.rewardedvideoexample W/Ads: Failed to load ad: 3
运行官方的demo就报这个错，有知道怎么回事的吗？

你好，我也是返回3，请问怎么解决的

我也遇到这个问题了，请问你是怎么解决的呢？

几年前的旧版系统手机还可以显示， 新出的手机不行 ，我用的三星， 安装Google服务框架应该可以解决这类问题，但是 问题是服务框架在新版手机上无法安装成功