Google Identity Toolkit: Android client ID

Question

I have been playing with the GIT for a while now, and I am a bit confused with the two client IDs in AndroidManifest

android:scheme="INSERT_REVERSED_SERVER_CLIENT_ID"
android:name="identitytoolkit.server_client_id"
android:value="INSERT_YOUR_SERVER_CLIENT_ID"

It looks like changing the value of [android:scheme] does not have any effect on GIT. And for some reason for [identitytoolkit.server_client_id] I can only use web client ID. If I plug in Android client ID from the dev console, GIT fails for Google accounts.

Could somebody please explain how this is supposed to work?

Answer 1

Your Android Manifest should look roughly like this:

...
<application>
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <action android:name="android.intent.action.SEARCH" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
        <intent-filter>
            <action android:name="android.intent.action.VIEW" />
            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.BROWSABLE" />

            <!-- The scheme value is the reversed web Application Client ID -->
            <data
                android:host="gitkit"
                android:scheme="com.googleusercontent.apps.[SOME NUMBERS]-[SOME NUMBERS AND LETTERS]" />
        </intent-filter>
    </activity>

    <meta-data
        android:name="identitytoolkit.server_client_id"
        android:value="[SOME NUMBERS]-[SOME NUMBERS AND LETTERS].apps.googleusercontent.com" />

</application>
...

Both [SOME NUMBERS] replacement values should match exactly, as should both [SOME NUMBERS AND LETTERS] replacement values. This Client ID is generated by Google when you create a new OAuth 2.0 Client ID of type "Web application." I know, it seems weird that you have to create a Web application client ID for your android app, but you do.

You can see this tutorial for further help! Hope that helps!