Google Sign-In for Android
This time I will show you how to integrate Google Sing-In to an Android application. First you need to add Google play services SDK. In Android Studio select: Tools > Android > SDK Manager, then in SDK Tools tab check the Google Play Services checkbox button.
Create a new project in android studio with an empty Activity, default options and set the following dependencies in build.gradle
apply plugin: 'com.android.application' android { compileSdkVersion 25 buildToolsVersion "26.
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