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로메오의 블로그
[Ionic] QR Code 생성하기 / QR Code Scan 본문
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프로젝트 생성
$ ionic start qrReader blank
$ cd qrReader
$ npm install ngx-qrcode2
플러그인 설치
$ ionic cordova plugin add phonegap-plugin-barcodescanner
$ npm install @ionic-native/barcode-scanner
$ ionic cordova plugin add cordova-base64-to-gallery
$ npm install @ionic-native/base64-to-gallery
config.xml
<?xml version='1.0' encoding='utf-8'?>
<widget id="io.ionic.starter" version="0.0.1" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
....
<platform name="android">
....
</platform>
<platform name="ios">
<edit-config file="*-Info.plist" mode="merge" target="NSCameraUsageDescription">
<string>To Scan QR Code</string>
</edit-config>
<edit-config file="*-Info.plist" mode="merge" target="NSPhotoLibraryAddUsageDescription">
<string>To Save QR Code</string>
</edit-config>
....
</platform>
....
</widget>
ios에 카메라와 사진보관함에 접근할 때 사용할 메세지를 등록합니다.
src/app/app.module.ts
....
import { BarcodeScanner } from '@ionic-native/barcode-scanner/ngx'
import { Base64ToGallery } from '@ionic-native/base64-to-gallery/ngx'
@NgModule({
....
providers: [
....
BarcodeScanner,
Base64ToGallery
],
....
})
....
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouteReuseStrategy } from '@angular/router';
import { IonicModule, IonicRouteStrategy } from '@ionic/angular';
import { SplashScreen } from '@ionic-native/splash-screen/ngx';
import { StatusBar } from '@ionic-native/status-bar/ngx';
import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';
import { BarcodeScanner } from '@ionic-native/barcode-scanner/ngx'
import { Base64ToGallery } from '@ionic-native/base64-to-gallery/ngx'
@NgModule({
declarations: [AppComponent],
entryComponents: [],
imports: [BrowserModule, IonicModule.forRoot(), AppRoutingModule],
providers: [
StatusBar,
SplashScreen,
{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy },
BarcodeScanner,
Base64ToGallery
],
bootstrap: [AppComponent]
})
export class AppModule {}
src/app/home/home.module.ts
....
import { NgxQRCodeModule } from 'ngx-qrcode2';
@NgModule({
imports: [
....
NgxQRCodeModule
],
....
})
....
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { IonicModule } from '@ionic/angular';
import { FormsModule } from '@angular/forms';
import { RouterModule } from '@angular/router';
import { HomePage } from './home.page';
import { NgxQRCodeModule } from 'ngx-qrcode2';
@NgModule({
imports: [
CommonModule,
FormsModule,
IonicModule,
RouterModule.forChild([
{
path: '',
component: HomePage
}
]),
NgxQRCodeModule
],
declarations: [HomePage]
})
export class HomePageModule {}
src/app/home/home.page.html
<ion-header>
<ion-toolbar color="primary">
<ion-title>
Ionic Blank
</ion-title>
</ion-toolbar>
</ion-header>
<ion-content>
<ion-item>
<ion-input type="text" placeholder="My QR Code Data" [(ngModel)]="qrData"></ion-input>
</ion-item>
<ion-segment [(ngModel)]="elementType">
<ion-segment-button value="canvas">
<ion-label>Canvas</ion-label>
</ion-segment-button>
<ion-segment-button value="img">
<ion-label>Image</ion-label>
</ion-segment-button>
<ion-segment-button value="url">
<ion-label>URL</ion-label>
</ion-segment-button>
</ion-segment>
<ion-button expand="full" (click)="scanQRCode()" color="secondary">
<ion-icon name="qr-scanner"></ion-icon> Scan Code
</ion-button>
<ion-card *ngIf="qrData" text-center>
<ngx-qrcode [qrc-value]="qrData" [qrc-element-type]="elementType" qrc-class="my-code"></ngx-qrcode>
<ion-card-content>
<ion-button expand="full" color="tertiary" (click)="downloadQR()" *ngIf="elementType === 'canvas'">
<ion-icon name="download" slot="start"></ion-icon> Download QR Code
</ion-button>
</ion-card-content>
</ion-card>
<ion-card *ngIf="scannedCode">
<ion-card-content>
Result from scan: {{ scannedCode }}
</ion-card-content>
</ion-card>
</ion-content>
src/app/home/home.page.ts
import { Component } from '@angular/core';
import { BarcodeScanner } from '@ionic-native/barcode-scanner/ngx';
import { Base64ToGallery } from '@ionic-native/base64-to-gallery/ngx';
import { ToastController } from '@ionic/angular';
@Component({
selector: 'app-home',
templateUrl: 'home.page.html',
styleUrls: ['home.page.scss'],
})
export class HomePage {
qrData = 'http://gaeyou.com'
scanCode = null
elementType: 'url' | 'canvas' | 'img' = 'canvas'
constructor(
private barcodeScanner: BarcodeScanner,
private base64ToGallery: Base64ToGallery,
private toastCtrl: ToastController
) {}
scanQRCode() {
this.barcodeScanner.scan().then(barcodeData => {
this.scanCode = barcodeData
})
}
downloadQR() {
const canvas = document.querySelector('canvas') as HTMLCanvasElement
const imageData = canvas.toDataURL('image/jpeg').toString()
console.log(imageData)
let data = imageData.split(',')[1]
this.base64ToGallery
.base64ToGallery(data, {prefix: '_img', mediaScanner: true})
.then(async res => {
let toast = await this.toastCtrl.create({
header: 'QR Code saved in your phone'
})
toast.present()
}, err => console.log(err))
}
}
서버구동
$ ionic serve
iOS build
$ ionic cordova build ios
Xcode에서 프로젝트를 열어서 iPhone으로 빌드하고 QR Scan을 작동해봅니다.
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