尝试按照Google的指南进行基本设置:mGoogleApiClient=newGoogleApiClient.Builder(this).enableAutoManage(this/*FragmentActivity*/,this/*OnConnectionFailedListener*/).addApi(Auth.GOOGLE_SIGN_IN_API,gso).build();OnConnectionFailedListener的第二个“this”失败Wrong2ndargumenttype.Found:'....HomeScreen',required:'com.google.a