react-native-google-sign

Let your users sign in with their Google account. Includes Google Sign-In SDK v2.4.0

Installation

npm install react-native-google-signin --save

iOS

Google project configuration

• Open https://developers.google.com/identity/sign-in/ios/sdk/

• Scroll down and click Get a configuration file button

• Download the GoogleService-Info.plist file at the end of the process

XCode configuration

• Add RNGoogleSignin folder to your XCode project (click on 'Options' button and make sure 'copy items if needed' is ticked and 'create groups' is selected)

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• Link your project with the following frameworks: AddressBook.framework StoreKit.framework SystemConfiguration.framework

• If you run into link issues when building your project try to add libz.tbd library (see Stackoverflow for more details).

Add the end of this step, your Xcode config should look like this:

• Configure URL types in the Info panel
  • add a URL with scheme set to your REVERSED_CLIENT_ID (found inside the plist)
  • add a URL with scheme set to your bundle id

Add the end of this step, your Xcode config should look like this:

Usage

Inside AppDelegate.m

// add this line before @implementation AppDelegate
#import "RNGoogleSignin.h"

// add this method before @end
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {

  return [RNGoogleSignin application:application openURL:url sourceApplication:sourceApplication annotation:annotation];
}

From your JS files

var { NativeAppEventEmitter } = require('react-native');
var GoogleSignin = require('react-native-google-signin');

// configure API keys and access right
GoogleSignin.configure(
  CLIENT_ID, // from .plist file
  SCOPES // array of authorization names: eg ['https://www.googleapis.com/auth/calendar'] for requesting access to user calendar
);

// called on signin error
NativeAppEventEmitter.addListener('googleSignInError', (error) => {
  ....
});

// called on signin success, you get user data (email) and access token
NativeAppEventEmitter.addListener('googleSignIn', (user) => {
  console.log('Access toekn', user.accessToken)
});

// call this method when user clicks the 'Signin with google' button
GoogleSignin.signIn();

// remove user credentials. next time user starts the application, a signin promp will be displayed
GoogleSignin.signOut();

Android

Google project configuration

• Open https://developers.google.com/identity/sign-in/android/start-integrating

• Scroll down and click Get a configuration file button

• Place the generated configuration file (google-services.json) into <YOUR_PROJECT_ROOT>/android/app

Setup

• In android/setting.gradle

...
include ':react-native-google-signin', ':app'
project(':react-native-google-signin').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-google-signin/android')

• In android/build.gradle

...
dependencies {
        classpath 'com.android.tools.build:gradle:1.3.1'
        classpath 'com.google.gms:google-services:1.5.0' // <--- add this
    }

• In android/app/build.gradle

apply plugin: "com.android.application"
apply plugin: 'com.google.gms.google-services' // <--- add this at the TOP
...
dependencies {
    compile fileTree(dir: "libs", include: ["*.jar"])
    compile "com.android.support:appcompat-v7:23.0.1"
    compile "com.facebook.react:react-native:0.14.+"
    compile project(":react-native-google-signin") // <--- add this
}

• Register Module (in MainActivity.java)

import co.apptailor.googlesignin.RNGoogleSigninModule; // <--- import
import co.apptailor.googlesignin.RNGoogleSigninPackage;  // <--- import

public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
  ......

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mReactRootView = new ReactRootView(this);

    mReactInstanceManager = ReactInstanceManager.builder()
      .setApplication(getApplication())
      .setBundleAssetName("index.android.bundle")
      .setJSMainModuleName("index.android")
      .addPackage(new MainReactPackage())
      .addPackage(new RNGoogleSigninPackage(this)) // <------ add this line to yout MainActivity class
      .setUseDeveloperSupport(BuildConfig.DEBUG)
      .setInitialLifecycleState(LifecycleState.RESUMED)
      .build();

    mReactRootView.startReactApplication(mReactInstanceManager, "AndroidRNSample", null);

    setContentView(mReactRootView);
  }

  // add this method inside your activity class
  @Override
  protected void onActivityResult(int requestCode, int resultCode, android.content.Intent data) {
      if (requestCode == RNGoogleSigninModule.RC_SIGN_IN) {
          RNGoogleSigninModule.onActivityResult(data);
      }
      super.onActivityResult(requestCode, resultCode, data);
  }

  ......

}

Usage

var GoogleSignin = require('react-native-google-signin');
var { DeviceEventEmitter } = require('react-native');

GoogleSignin.init(); // somewhere in a componentDidMount.

// Callback on sign-in errors
DeviceEventEmitter.addListener('googleSignInError', (error) => {
  console.log('ERROR signin in', error);
});

// callback on sign-in success
DeviceEventEmitter.addListener('googleSignIn', (user) => {
  console.log(user);
  this.setState({user: user});
});

// To sign in
GoogleSignin.signIn();

// To sign out
GoogleSignin.signOut();