Arhiva login - Stranica 2 od 2 - Tomislav Stanković

U ovom ću blog postu pokazati kako na jednostavan način ugraditi Facebook prijavu unutar Ionic aplikacije.

Ovo je odličan izbor za sve aplikacije koje trebaju neku vrstu prijave i održavanja komunikacije s korisnicima aplikacije bez da se mora imati poseban back-end za prijavu.

Također, korisnicima je jednostavnije kliknuti na jedan gumb i tako se prijaviti nego da se prvo moraju registrirati koristeći npr. e-mail.

Kreiranje aplikacije

Za početak kreiram novu Ionic aplikaciju i odmah dodajem Android platformu kako bi kasnije mogao aplikaciju pokrenuti na Android mobilnom uređaju.

$ ionic start IonicPrijavaF blank
$ cd IonicPrijavaF 
$ ionic cordova platform add android

$ ionic start IonicPrijavaF blank

$ cd IonicPrijavaF

$ ionic cordova platform add android

Sada ću odmah promijeniti i APP ID oznaku unutar config.xml iz id="io.ionic.starter" u id="hr.tomislavstankovic.ionicprijavaf" jer će mi to trebati odmah u nastavku.

Facebook Developers

Sada ću na poveznici https://developers.facebook.com/apps/ kreirati profil za maloprije kreiranu aplikaciju koji mi je potreban za uspješnu implementaciju prijave.

Klikom na “Add a New App” kreiram profil za svoju aplikaciju.

U ovom koraku unosim samo naziv aplikacije.

Sada vidim upravljačku ploču i “App ID” koji će mi uskoro trebati i bez kojega Facebook prijava ne bi radila.

Klikom na “Add Platform” u prethodnom koraku dobijem sljedeći prozor gdje odabirem “Android“.

Ovdje unosim ID iz config.xml datoteke.

Nakon toga dobijem sljedeću poruku i s obzirom da mi je ovo testna aplikacija i da se ne nalazi na Google Play Storeu dovoljno je kliknuti na “Use this package name“.

Sada imam sve spremno za implementaciju.

Implementacija prijave

Sada krećem u implementaciju Facebook prijave unutar Ionic aplikacije.

Prije svega moram instalirati Ionic Native Facebook plugin

$ ionic cordova plugin add cordova-plugin-facebook4 --variable APP_ID="1986093454936515" --variable APP_NAME="IonicPrijavaF"
$ npm install --save @ionic-native/facebook

1 2	$ ionic cordova plugin add cordova-plugin-facebook4 --variable APP_ID="1986093454936515" --variable APP_NAME="IonicPrijavaF" $ npm install --save @ionic-native/facebook

Nakon instalacije u config.xml pronalazim sljedeće

 <plugin name="cordova-plugin-facebook4" spec="^1.9.1">
        <variable name="APP_ID" value="1986093454936515" />
        <variable name="APP_NAME" value="IonicPrijavaF" />
 </plugin>

</plugin>

Sada uvozim ranije instaliran plugin unutar app.module.ts

import { Facebook } from '@ionic-native/facebook';
...
providers: [
    StatusBar,
    SplashScreen,
    Facebook,
    {provide: ErrorHandler, useClass: IonicErrorHandler}
  ]

import { Facebook } from '@ionic-native/facebook';

...

providers: [

StatusBar,

SplashScreen,

Facebook,

{provide: ErrorHandler, useClass: IonicErrorHandler}

]

Ako sada pokrenem aplikaciju vidjet ću samo HomePage stranicu jer sam koristio blank temu i zato ću sada kreirati novu stranicu koja će sadržavati gumb za prijavu. Tek nakon uspješne prijave prikaz će se HomePage stranica.

$ ionic generate page Prijava

1	$ ionic generate page Prijava

Sada ću u app.component.ts postaviti da mi je PrijavaPage početna stranica (rootPage) nakon što se pokrene aplikacija.

import { Component } from '@angular/core';
import { Platform } from 'ionic-angular';
import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';

//import { HomePage } from '../pages/home/home';

@Component({
  templateUrl: 'app.html'
})
export class MyApp {
  //rootPage:any = HomePage;
  rootPage:any = 'PrijavaPage';

  constructor(platform: Platform, statusBar: StatusBar, splashScreen: SplashScreen) {
    platform.ready().then(() => {
      // Okay, so the platform is ready and our plugins are available.
      // Here you can do any higher level native things you might need.
      statusBar.styleDefault();
      splashScreen.hide();
    });
  }
}

import { Component } from '@angular/core';

import { Platform } from 'ionic-angular';

import { StatusBar } from '@ionic-native/status-bar';

import { SplashScreen } from '@ionic-native/splash-screen';

//import { HomePage } from '../pages/home/home';

@Component({

templateUrl: 'app.html'

})

export class MyApp {

//rootPage:any = HomePage;

rootPage:any = 'PrijavaPage';

constructor(platform: Platform, statusBar: StatusBar, splashScreen: SplashScreen) {

platform.ready().then(() => {

// Okay, so the platform is ready and our plugins are available.

// Here you can do any higher level native things you might need.

statusBar.styleDefault();

splashScreen.hide();

});

}

Stranica za prijavu sastojat će se od Ionic loga i gumba za Facebook prijavu.

<ion-content padding>
  <ion-row>
      <ion-col col-12 text-center>
            <img src="assets/imgs/logo.png" alt="Ionic logo" width="250" height="auto">
          </ion-col>
      </ion-row>
            <ion-row padding>
                <ion-col col-12 text-center>
                    <img (click)="prijavaFb()" src="assets/imgs/facebook-button.png" alt="Facebook logo">
                </ion-col>
              </ion-row>
</ion-content>

<ion-content padding>

<ion-row>

<ion-col col-12 text-center>

</ion-col>

</ion-row>

<ion-row padding>

<ion-col col-12 text-center>

</ion-col>

</ion-row>

</ion-content>

Funkcionalnost će se sastojati od dvije funkcije. Funkcija prijavaFb() vrši prijavu, dok funkcija getUserDetail() na osnovu ID-a korisnika dohvaća više detalja o korisniku kao što su ime i prezime, email adresa, spol i poveznicu na sliku profila.

import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';

import { Facebook, FacebookLoginResponse } from '@ionic-native/facebook';
import { HomePage } from '../home/home';

@IonicPage()
@Component({
  selector: 'page-prijava',
  templateUrl: 'prijava.html',
})
export class PrijavaPage {

  constructor(public _navCtrl: NavController, 
              public _navParams: NavParams,
              private _facebook: Facebook) {
  }

  ionViewDidLoad() {
    console.log('ionViewDidLoad PrijavaPage');
  }

  prijavaFb(){
    this._facebook.login(['public_profile', 'user_friends', 'email'])
  .then((res) => {
     console.log(res);
     this._navCtrl.setRoot(HomePage);
  }, (err) => {
    console.log('Error logging into Facebook', err);
  });
  } 

  getUserDetail(userid) {
    this._facebook.api("/"+userid+"/?fields=id,email,name,picture,gender",["public_profile"])
      .then(res => {
        console.log(res);
      })
      .catch(e => {
        console.log(e);
      });
  } 

}

import { Component } from '@angular/core';

import { IonicPage, NavController, NavParams } from 'ionic-angular';

import { Facebook, FacebookLoginResponse } from '@ionic-native/facebook';

import { HomePage } from '../home/home';

@IonicPage()

@Component({

selector: 'page-prijava',

templateUrl: 'prijava.html',

})

export class PrijavaPage {

constructor(public _navCtrl: NavController,

public _navParams: NavParams,

private _facebook: Facebook) {

}

ionViewDidLoad() {

console.log('ionViewDidLoad PrijavaPage');

}

prijavaFb(){

this._facebook.login(['public_profile', 'user_friends', 'email'])

.then((res) => {

console.log(res);

this._navCtrl.setRoot(HomePage);

}, (err) => {

console.log('Error logging into Facebook', err);

});

}

getUserDetail(userid) {

this._facebook.api("/"+userid+"/?fields=id,email,name,picture,gender",["public_profile"])

.then(res => {

console.log(res);

})

.catch(e => {

console.log(e);

});

}

Nakon uspješne prijave korisnik automatski bude preusmjeren na HomePage dok u pozadini dobijem dva odgovora (res) s podacima o korisniku koji se upravo prijavio u moju Ionic aplikaciju.

U ovom se primjeru HomePage sastoji samo od gumba za odjavu

<ion-header>
  <ion-navbar>
    <ion-title>
      Ionic - Facebook prijava
    </ion-title>
  </ion-navbar>
</ion-header>

<ion-content padding>
  <ion-row padding>
    <ion-col col-12 text-center>
        <img (click)="odjavaFb()" src="assets/imgs/facebook-logout.png" alt="Facebook logo">
    </ion-col>
  </ion-row>
</ion-content>

<ion-header>

<ion-navbar>

<ion-title>

Ionic - Facebook prijava

</ion-title>

</ion-navbar>

</ion-header>

<ion-content padding>

<ion-row padding>

<ion-col col-12 text-center>

</ion-col>

</ion-row>

</ion-content>

tj. od funkcije za odjavu.

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';

import { Facebook } from '@ionic-native/facebook';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {

  constructor(public _navCtrl: NavController,
              private _facebook: Facebook) {

  }

  odjavaFb(){
    this._facebook.logout()
    .then( res => console.log(res))
    .catch(e => console.log('Error logout from Facebook', e));
  }

}

import { Component } from '@angular/core';

import { NavController } from 'ionic-angular';

import { Facebook } from '@ionic-native/facebook';

@Component({

selector: 'page-home',

templateUrl: 'home.html'

})

export class HomePage {

constructor(public _navCtrl: NavController,

private _facebook: Facebook) {

}

odjavaFb(){

this._facebook.logout()

.then( res => console.log(res))

.catch(e => console.log('Error logout from Facebook', e));

}

I to bi bilo sve. Međutim, postoji još jedna stvar. Svaki put kada korisnik pokrene aplikaciju, neovisno o tome je li se ranije već prijavljivao, on će se morati ponovno prijaviti sa svojim podacima. Osim ako napravim sljedeće.

U trenutku kada se korisnik uspješno prijavi u aplikaciju spremam njegov ID u localStorage i kasnije svaki sljedeći put kada pokrene aplikaciju provjeravam postoji li već spremljen njegov ID this.provjera();, ako postoji automatski ga preusmjeravam na HomePage.

import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';

import { Facebook, FacebookLoginResponse } from '@ionic-native/facebook';
import { HomePage } from '../home/home';

@IonicPage()
@Component({
  selector: 'page-prijava',
  templateUrl: 'prijava.html',
})
export class PrijavaPage {

  constructor(public _navCtrl: NavController, 
              public _navParams: NavParams,
              private _facebook: Facebook) {
  }

  ionViewDidLoad() {
    console.log('ionViewDidLoad PrijavaPage');
    this.provjera();
  }

  prijavaFb(){
    this._facebook.login(['public_profile', 'user_friends', 'email'])
  .then((res) => {
     console.log(res);
     this._navCtrl.setRoot(HomePage);
  }, (err) => {
    console.log('Error logging into Facebook', err);
  });
  } 

  getUserDetail(userid) {
    this._facebook.api("/"+userid+"/?fields=id,email,name,picture,gender",["public_profile"])
      .then(res => {
        console.log(res);
        localStorage.setItem('userId', res.id);
      })
      .catch(e => {
        console.log(e);
      });
  } 

  provjera(){
    if(localStorage.getItem('userId')){
      this._navCtrl.setRoot(HomePage);
    }
  }

}

import { Component } from '@angular/core';

import { IonicPage, NavController, NavParams } from 'ionic-angular';

import { Facebook, FacebookLoginResponse } from '@ionic-native/facebook';

import { HomePage } from '../home/home';

@IonicPage()

@Component({

selector: 'page-prijava',

templateUrl: 'prijava.html',

})

export class PrijavaPage {

constructor(public _navCtrl: NavController,

public _navParams: NavParams,

private _facebook: Facebook) {

}

ionViewDidLoad() {

console.log('ionViewDidLoad PrijavaPage');

this.provjera();

}

prijavaFb(){

this._facebook.login(['public_profile', 'user_friends', 'email'])

.then((res) => {

console.log(res);

this._navCtrl.setRoot(HomePage);

}, (err) => {

console.log('Error logging into Facebook', err);

});

}

getUserDetail(userid) {

this._facebook.api("/"+userid+"/?fields=id,email,name,picture,gender",["public_profile"])

.then(res => {

console.log(res);

localStorage.setItem('userId', res.id);

})

.catch(e => {

console.log(e);

});

}

provjera(){

if(localStorage.getItem('userId')){

this._navCtrl.setRoot(HomePage);

}

Zaključak

U ovom sam blog postu pokazao kako na jednostavan i brz način ugraditi Facebook prijavu unutar Ionic aplikacije.

Struktura projekta prema package.json

{
  "name": "IonicPrijavaF",
  "version": "0.0.1",
  "author": "Tomislav Stanković",
  "homepage": "https://www.tomislavstankovic.com/",
  "private": true,
  "scripts": {
    "clean": "ionic-app-scripts clean",
    "build": "ionic-app-scripts build",
    "lint": "ionic-app-scripts lint",
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve"
  },
  "dependencies": {
    "@angular/common": "5.0.3",
    "@angular/compiler": "5.0.3",
    "@angular/compiler-cli": "5.0.3",
    "@angular/core": "5.0.3",
    "@angular/forms": "5.0.3",
    "@angular/http": "5.0.3",
    "@angular/platform-browser": "5.0.3",
    "@angular/platform-browser-dynamic": "5.0.3",
    "@ionic-native/core": "4.4.0",
    "@ionic-native/facebook": "^4.5.3",
    "@ionic-native/splash-screen": "4.4.0",
    "@ionic-native/status-bar": "4.4.0",
    "@ionic/storage": "2.1.3",
    "cordova-android": "6.3.0",
    "cordova-plugin-device": "^2.0.1",
    "cordova-plugin-facebook4": "^1.9.1",
    "cordova-plugin-ionic-keyboard": "^2.0.5",
    "cordova-plugin-ionic-webview": "^1.1.16",
    "cordova-plugin-splashscreen": "^5.0.2",
    "cordova-plugin-whitelist": "^1.3.3",
    "ionic-angular": "3.9.2",
    "ionicons": "3.0.0",
    "rxjs": "5.5.2",
    "sw-toolbox": "3.6.0",
    "zone.js": "0.8.18"
  },
  "devDependencies": {
    "@ionic/app-scripts": "3.1.8",
    "typescript": "2.4.2"
  },
  "description": "Primjer Facebook prijave u Ionic aplikaciju",
  "cordova": {
    "plugins": {
      "cordova-plugin-whitelist": {},
      "cordova-plugin-device": {},
      "cordova-plugin-splashscreen": {},
      "cordova-plugin-ionic-webview": {},
      "cordova-plugin-ionic-keyboard": {},
      "cordova-plugin-facebook4": {
        "APP_ID": "1986093454936515",
        "APP_NAME": "IonicPrijavaF"
      }
    },
    "platforms": [
      "android"
    ]
  }
}

{

"name": "IonicPrijavaF",

"version": "0.0.1",

"author": "Tomislav Stanković",

"homepage": "https://www.tomislavstankovic.com/",

"private": true,

"scripts": {

"clean": "ionic-app-scripts clean",

"build": "ionic-app-scripts build",

"lint": "ionic-app-scripts lint",

"ionic:build": "ionic-app-scripts build",

"ionic:serve": "ionic-app-scripts serve"

"dependencies": {

"@angular/common": "5.0.3",

"@angular/compiler": "5.0.3",

"@angular/compiler-cli": "5.0.3",

"@angular/core": "5.0.3",

"@angular/forms": "5.0.3",

"@angular/http": "5.0.3",

"@angular/platform-browser": "5.0.3",

"@angular/platform-browser-dynamic": "5.0.3",

"@ionic-native/core": "4.4.0",

"@ionic-native/facebook": "^4.5.3",

"@ionic-native/splash-screen": "4.4.0",

"@ionic-native/status-bar": "4.4.0",

"@ionic/storage": "2.1.3",

"cordova-android": "6.3.0",

"cordova-plugin-device": "^2.0.1",

"cordova-plugin-facebook4": "^1.9.1",

"cordova-plugin-ionic-keyboard": "^2.0.5",

"cordova-plugin-ionic-webview": "^1.1.16",

"cordova-plugin-splashscreen": "^5.0.2",

"cordova-plugin-whitelist": "^1.3.3",

"ionic-angular": "3.9.2",

"ionicons": "3.0.0",

"rxjs": "5.5.2",

"sw-toolbox": "3.6.0",

"zone.js": "0.8.18"

"devDependencies": {

"@ionic/app-scripts": "3.1.8",

"typescript": "2.4.2"

"description": "Primjer Facebook prijave u Ionic aplikaciju",

"cordova": {

"plugins": {

"cordova-plugin-whitelist": {},

"cordova-plugin-device": {},

"cordova-plugin-splashscreen": {},

"cordova-plugin-ionic-webview": {},

"cordova-plugin-ionic-keyboard": {},

"cordova-plugin-facebook4": {

"APP_ID": "1986093454936515",

"APP_NAME": "IonicPrijavaF"

}

"platforms": [

"android"

]

}

Kreiranje aplikacije

Facebook Developers

Implementacija prijave

Zaključak

Pretpostavka

localStorage kao rješenje

Spremanje

Korištenje

Brisanje