您使用的是 Plus.API 还是 Auth.GOOGLE_SIGN_IN_API?后者是最新改造的.在这里查看:https://developers.google.com/identity/sign-in/安卓/登录

如果您使用的是 Auth.GOOGLE_SIGN_IN_API:

在onActivityResult中，使用类似下面的代码，你可以得到一个状态码，它是由GoogleSignInStatusCodes定义的:https://developers.google.com/android/reference/com/google/android/gms/auth/api/signin/GoogleSignInStatusCodes

@Overridepublic void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);//从 GoogleSignInApi.getSignInIntent(...); 启动 Intent 返回的结果；如果(请求代码 == RC_SIGN_IN){GoogleSignInResult 结果 = Auth.GoogleSignInApi.getSignInResultFromIntent(data);int statusCode = result.getStatus().getStatusCode();}}

最常见的问题是缺少正确的 OAuth2 客户端注册.(不幸的是，目前，状态代码是 INTERNAL_ERROR 8，这没有帮助.)例如看看这个线程:当从 GoogleSignInOptions Android 请求电子邮件时发生 INTERNAL_ERROR>

I've been facing some issues while integrating Google+ Signin functionality. So far, i've integrated all the necessary G+ Sign in API modules and codes which works good, generated and placed the google-services.json within /app after generating SHA1 using keytool of debug.keystore and pasted the SHA1 on the google cloud developer console, but now there's only one glitch i am facing since many days/weeks i.e. when i try to do device debuggin and whenever i click on "G+ Sign In" i get the following error in LogCat:

E/GMPM: getGoogleAppId failed with status: 10

E/GMPM: Uploading is not possible. App measurement disabled.

D/SignInActivity: handleSignInResult:false

This handleSignInResult is returning False all the time and not able to sign in to fetch data further. If anyone of you have ever faced such situation please help me out here. This small obstacle is pretty maddening.

Thank you everyone.

Are you using Plus.API or Auth.GOOGLE_SIGN_IN_API? The latter is the latest revamped one. Check it out here: https://developers.google.com/identity/sign-in/android/sign-in

If you are using Auth.GOOGLE_SIGN_IN_API:

In onActivityResult, use code similar to below and you can get a status code, which is defined by GoogleSignInStatusCodes: https://developers.google.com/android/reference/com/google/android/gms/auth/api/signin/GoogleSignInStatusCodes

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
    if (requestCode == RC_SIGN_IN) {
        GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
        int statusCode = result.getStatus().getStatusCode();
    }
}

The most common issue is missing the right OAuth2 client registration. (Unfortunately, for now, the status code is INTERNAL_ERROR 8, which is not helpful. ) E.g. Take a look at this thread: Occured an INTERNAL_ERROR when requestEmail from GoogleSignInOptions Android