问题
My game is published and live on Google Play. But in the next update I want to add Play Services. Is this possible, because I read that I have to publish the Play Services first and then the game. If it's possible can you give me detailed instructions, because I tried once and screwed the things.
回答1:
You will have to go back to your source code, add the Google Play Services and build another APK. After that re-upload it to Google Play again, say version 2. The instruction to add Google Play Services to your project is stated in the Add Google Play Services to Your Project:
To make the Google Play services APIs available to your app:
Open the build.gradle file inside your application module directory. Note: Android Studio projects contain a top-level build.gradle file and a build.gradle file for each module. Be sure to edit the file for your application module. See Building Your Project with Gradle for more information about Gradle. Add a new build rule under dependencies for the latest version of play-services. For example: apply plugin: 'com.android.application' ...
dependencies { compile 'com.google.android.gms:play-services:10.0.1' }Be sure you update this version number each time Google Play services is updated. Check the docs for more info.
来源：https://stackoverflow.com/questions/41792941/can-i-add-google-play-services-to-already-published-app