I Can't Initialize Google Play Game Service

Project have just this code, and I just follow this description. Visit https://developers.google.com/games/services/android/init Make Project and adding library 'google-play-servic

Solution 1:

It seems like you forget to add APP_ID metadata in your manifest file. You need to add the following code exactly inside the tag in the Android Manifest file:

<meta-data android:name="com.google.android.gms.games.APP_ID"
    android:value="@string/app_id" />

Please make sure the meta tag is not inside the tag but tag, and use APP_ID which is 12 digits number placed right of your game title in your play game console.

for more info, check below link: https://developers.google.com/games/services/android/quickstart#step_3_modify_your_code