Google云消息传递 - 身份验证失败

Question

我们必须创建一个带有推送通知的GCM服务的android项目。 当我们尝试使用GoogleCloudMessaging.register（...）函数注册GCM时，它会失败并抛出AUTHENTICATION_FAILED异常。我们不知道为什么。

以下是我们使用的google初始化代码：

private void initGoogleCloudMessaging() {
    // Check device for Play Services APK. If check succeeds, proceed with
    // GCM registration.
    if (checkPlayServices()) {
        gcm = GoogleCloudMessaging.getInstance(this);
        String regId = getGoogleCloudMessagingRegistrationID(context);

        if (regId.isEmpty()) {
            registerGoogleCloudMessagingInBackground();
        }
    } else {
        Log.e(GCM_TAG, "No valid Google Play Services APK found.");
    }
}

private void registerGoogleCloudMessagingInBackground() {
    Log.i("GCM", "Registering..");
    new AsyncTask() {
        @Override
        protected String doInBackground(Object... params) {
            String msg = "";
            try {
                if (gcm == null) {
                    gcm = GoogleCloudMessaging.getInstance(context);
                }
                String regId = gcm.register(Configuration.GoogleCloudMessagingSenderID);
                msg = ">>Device registered, registration ID=" + regId;
                storeGoogleCloudMessagingDeviceID(context, regId);
            } catch (IOException ex) {
                msg = "Error :" + ex.getMessage();
                // If there is an error, don't just keep trying to register.
                // Require the user to click a button again, or perform
                // exponential back-off.
                Log.e("GCMTest", "GCM: Registration exception: " + ex.getMessage());
                //oldSchoolRegister();
            }
            return msg;
        }

    }.execute(null, null, null);
}

我们使用正确的项目编号。

以下是我们的XML文件的google部分：

<!-- Permissions necessary for Google's Cloud Messaging Service -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />

<meta-data
    android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />

我希望你可以帮助我，因为它非常令人沮丧。