Cloud endpoints authentication failure in android app

Question

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:

creden         


        

Answer 1

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}

)