Android 无法隐式转换类型'；Xamarin.Auth.OAuth2Authenticator'；至'；Google.api.Http.IConfigurableHttpClientInitializer'；_Android_Xamarin.ios_Xamarin_Oauth 2.0

Android 无法隐式转换类型'；Xamarin.Auth.OAuth2Authenticator'；至'；Google.api.Http.IConfigurableHttpClientInitializer'；

android xamarin.ios xamarin oauth-2.0

Android 无法隐式转换类型'；Xamarin.Auth.OAuth2Authenticator'；至'；Google.api.Http.IConfigurableHttpClientInitializer'；,android,xamarin.ios,xamarin,oauth-2.0,Android,Xamarin.ios,Xamarin,Oauth 2.0,我正在尝试使用google drive服务，提供流畅的代码和身份验证 var auth = new OAuth2Authenticator ( clientId: xxxxxxxx scope: "https://www.googleapis.com/auth/drive", authorizeUrl: new Uri ("https://accounts.google.com/o/oauth2/auth"), redirectUrl: new Uri ("myredirect:oob"));

我正在尝试使用google drive服务，提供流畅的代码和身份验证

var auth = new OAuth2Authenticator (
clientId: xxxxxxxx
scope: "https://www.googleapis.com/auth/drive",
authorizeUrl: new Uri ("https://accounts.google.com/o/oauth2/auth"),
redirectUrl: new Uri ("myredirect:oob"));

并尝试通过以下方式初始化google drive服务：

var service = new DriveService(new BaseClientService.Initializer()
{
HttpClientInitializer = auth,
ApplicationName = "Google Drive API Sample",
});

但上面的代码显示了一个错误错误CS0266:无法将类型“Xamarin.Auth.OAuth2Authenticator”隐式转换为“Google.api.Http.IConfigurableHttpClientInitializer”。存在显式转换（是否缺少转换？）（CS0266）