我有我使用了谷歌云端点Android应用程序在调试模式下认证的第一次尝试的麻烦。我设置了这样的凭据：

 凭证= GoogleAccountCredential.usingAudience（这一点，
           服务器：CLIENT_ID：长串-I-了 - 从-API控制台）;
credential.setSelectedAccountName（帐户名）;
 

然后尝试使用这样的：

 最后弦乐LOCAL_APP_ENGINE_SERVER_URL =htt​​p://xxx.xxx.x.xxx:8888;
Testdbendpoint.Builder endpointBuilder =新Testdbendpoint.Builder（
            AndroidHttp.newCompatibleTransport（），
            新GsonFactory（），
            凭据）;
endpointBuilder.setRootUrl（LOCAL_APP_ENGINE_SERVER_URL +/ _ah / API /）;
Testdbendpoint端点= endpointBuilder.build（）;
尝试 {
    TestDB的TESTDB =新TestDB的（）SETID（10101L）。
    TestDB的结果= endpoint.insertTestDB（TESTDB）.execute（）; //  - 失败这里!!!!
} 抓住 ...
 

但尝试失败，我得到这些消息的logcat：

03-06 23：33：20.418：W / System.err的（11861）：产生的原因：   com.google.android.gms.auth.GoogleAuthException：未知03-06   23：33：20.418：W / System.err的（11861）：在   com.google.android.gms.auth.GoogleAuthUtil.getToken（来源不明）   03-06 23：33：20.423：W / System.err的（11861）：在   com.google.android.gms.auth.GoogleAuthUtil.getToken（来源不明）   03-06 23：33：20.428：W / System.err的（11861）：在   com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential.getToken(GoogleAccountCredential.java:192)

也许你有错误的证书指纹（SHA1）为你的Andr​​oid客户端ID？随着生产的关键指纹认证只有当你手动签署.apk文件。

注册一个客户端ID已安装的应用程序（安卓）与你的debug.keystore指纹在 API控制台。要获取指纹的使用：

  C：\＆GT;的keytool -list -alias androiddebugkey -keystore C：\机器人\ debug.keystore -storepass安卓-keypass机器人
 

此外，您需要一个网络客户端ID并将其设置为读者在你的Andr​​oid应用程序：

 凭证= GoogleAccountCredential.usingAudience（这一点，服务器：CLIENT_ID：+ WEB_CLIENT_ID）;
 

AppEngine上端点配置应该是这样的：

  @Api（
    NAME =testEndpoint
    版本=V1，
    的ClientID = {ClientIds.WEB_ID，ClientIds.ANDROID_PRODUCTION_ID，ClientIds.ANDROID_DEBUG_ID}，
    观众= {ClientIds.WEB_ID}
 

）

I'm having trouble with my first attempt to use authentication in debug mode in a Google Cloud Endpoints android app. I set up credentials like this:

credential = GoogleAccountCredential.usingAudience(this,
           "server:client_id:long-string-i-got-from-api-console");
credential.setSelectedAccountName(accountName);

then try to use it like this:

final String LOCAL_APP_ENGINE_SERVER_URL = "http://xxx.xxx.x.xxx:8888"; 
Testdbendpoint.Builder endpointBuilder = new Testdbendpoint.Builder(
            AndroidHttp.newCompatibleTransport(),
            new GsonFactory(),
            credential);
endpointBuilder.setRootUrl(LOCAL_APP_ENGINE_SERVER_URL + "/_ah/api/");
Testdbendpoint endpoint = endpointBuilder.build();
try {
    TestDB testDB = new TestDB().setId(10101L);                      
    TestDB result = endpoint.insertTestDB(testDB).execute();  //-- fails here!!!!
} catch ...

But the try fails and I get these messages in logCat:

03-06 23:33:20.418: W/System.err(11861): Caused by: com.google.android.gms.auth.GoogleAuthException: Unknown 03-06 23:33:20.418: W/System.err(11861): at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source) 03-06 23:33:20.423: W/System.err(11861): at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source) 03-06 23:33:20.428: W/System.err(11861): at com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential.getToken(GoogleAccountCredential.java:192)

Maybe you have the wrong Certificate fingerprint (SHA1) for your Android Client-Id? The authentication with the fingerprint of your production key works only if you sign the .apk manually.

Register a Client-Id for an Installed Application (Android) with your debug.keystore fingerprint in your API Console. To get the fingerprint use:

C:\>keytool -list -alias androiddebugkey -keystore C:\.android\debug.keystore -storepass android -keypass android

Also you need a Web-Client-Id and set it as Audience in your Android application:

credential = GoogleAccountCredential.usingAudience(this,"server:client_id:" + WEB_CLIENT_ID);

AppEngine Endpoint configuration should look like this:

@Api(
    name = "testEndpoint",
    version = "v1",
    clientIds = {ClientIds.WEB_ID, ClientIds.ANDROID_PRODUCTION_ID, ClientIds.ANDROID_DEBUG_ID},
    audiences = {ClientIds.WEB_ID}

)