Ionic Google Login Integration

ionic-google-login-with-example

(Ionic login with google plus) explains about implementing google plus login using cordova-plugin-google-plus plugin with ionic native.

Login with Google Plus Video Lesson

Create Client Reversed Client Id: https://codesundar.com/tutorials/create-reverse-client-id-for-google-login/

Create New project & Change working directory

ionic start gplogin blank
cd gplogin

Add your platform

ionic cordova platform add android
npm install --save @ionic-native/googleplus

Change you working directory & Add plugin

ionic cordova plugin add cordova-plugin-googleplus --variable REVERSED_CLIENT_ID=com.googleusercontent.apps.877300201036-6lp9u547lbqcsk7hk3qn4tt35iopqh5u

or

ionic cordova plugin add https://github.com/EddyVerbruggen/cordova-plugin-googleplus --variable REVERSED_CLIENT_ID=com.googleusercontent.apps.877300201036-6lp9u547lbqcsk7hk3qn4tt35iopqh5u

working with home.html

<ion-content padding>
    <div *ngIf="isUserLoggedIn" style="text-align:center">
        <imgsrc="{{userInfo.imageUrl}}">
            <h3>{{userInfo.displayName}}</h3>
            <p>{{userInfo.email}}</p>
            <button ion-button clear (click)="logout()">Logout</button>
    </div>
</ion-content>
<ion-footer *ngIf="!isUserLoggedIn">
    <button ion-button block (click)="loginWithGP()">Login with Google+</button>
</ion-footer>

Explanation: In above code we have created div content for displaying users information and footer for login, if user is not loggedin

working with home.ts

loginWithGP(){
    this.gp.login({}).then(res=>{
    this.userInfo=res;
    this.isUserLoggedIn=true;
    }).catch( err => console.log(err));
}
logout(){
    this.gp.logout().then( ()=>{
    this.isUserLoggedIn=false;
    });
}

Explanation: In above code we have created an object for a googlePlus module. Using that, we're calling both login and logout operations.