我正在尝试在应用计费中实现。我按原样使用了trivialdrivesample。publicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//loadgamedataloadData();Stringbase64EncodedPublicKey="mykey";//Createthehelper,passingitourcontextandthepublickeytoverifysignatureswithL