ionic-framework
Ionicアプリケーションからのデバイスカメラとフォトライブラリへのアクセス
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備考
オープンカマラとフォトギャラリー
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Security-Policy" content="default-src *; script-src 'self' 'unsafe-inline' 'unsafe-eval' *; style-src 'self' 'unsafe-inline' *"/>
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title></title>
<link href="lib/ionic/css/ionic.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
<!-- IF using Sass (run gulp sass first), then uncomment below and remove the CSS includes above
<link href="css/ionic.app.css" rel="stylesheet">
-->
<!-- ionic/angularjs js -->
<script src="lib/ionic/js/ionic.bundle.js"></script>
<!-- cordova script (this will be a 404 during development) -->
<script src="js/ng-cordova.min.js"></script>
<script src="cordova.js"></script>
<!-- your app's js -->
<script src="js/app.js"></script>
<script src="js/controllers.js"></script>
<script src="js/services.js"></script>
</head>
<body ng-app="starter">
<ion-content class="has-header padding" ng-controller="ImageController">
<button class="button button-full button-energized" ng-click="addMedia()">
Add image
</button>
<button class="button button-full button-positive" ng-click="sendEmail()">
Send mail
</button>
<br><br>
<ion-scroll direction="y" style="height:200px; min-height: 200px; overflow: scroll; white-space: nowrap;">
<img ng-repeat="image in images track by $index" ng-src="data:image/jpeg;base64,{{image}}" style="height:200px; padding: 5px 5px 5px 5px;"/>
</ion-scroll>
</ion-content>
</body>
</html>
controller.js
angular.module('starter')
.controller('ImageController', function($scope, $cordovaDevice, $cordovaFile, $ionicPlatform, $cordovaEmailComposer, $ionicActionSheet, ImageService, FileService) {
$ionicPlatform.ready(function() {
$scope.images = FileService.images();
$scope.$apply();
});
$scope.addMedia = function() {
$scope.hideSheet = $ionicActionSheet.show({
buttons: [
{ text: 'Take photo' },
{ text: 'Photo from library' },
{ text: '<b ng-disabled="user.length<1">Delete</b>',
type: 'input type="file"'}
],
titleText: 'Add images',
cancelText: 'Cancel',
buttonClicked: function(index) {
$scope.addImage(index);
}
});
}
$scope.addImage = function(type) {
$scope.hideSheet();
ImageService.handleMediaDialog(type).then(function() {
$scope.$apply();
});
}
$scope.sendEmail = function() {
if ($scope.images != null && $scope.images.length > 0) {
var mailImages = [];
var savedImages = $scope.images;
for (var i = 0; i < savedImages.length; i++) {
mailImages.push('base64:attachment'+i+'.jpg//' + savedImages[i]);
}
$scope.openMailComposer(mailImages);
}
}
$scope.openMailComposer = function(attachments) {
var bodyText = '<html><h2>My Images</h2></html>';
var email = {
to: '',
attachments: attachments,
subject: 'Devdactic Images',
body: bodyText,
isHtml: true
};
$cordovaEmailComposer.open(email, function(){
console.log('email view dismissed');
}, this);
}
});
service.js
angular.module('starter')
.factory('FileService', function() {
var images;
var IMAGE_STORAGE_KEY = 'dav-images';
function getImages() {
var img = window.localStorage.getItem(IMAGE_STORAGE_KEY);
if (img) {
images = JSON.parse(img);
} else {
images = [];
}
return images;
};
function addImage(img) {
images.push(img);
window.localStorage.setItem(IMAGE_STORAGE_KEY, JSON.stringify(images));
};
return {
storeImage: addImage,
images: getImages
}
})
.factory('ImageService', function($cordovaCamera, FileService, $q, $cordovaFile) {
function optionsForType(type) {
var source;
switch (type) {
case 0:
source = Camera.PictureSourceType.CAMERA;
break;
case 1:
source = Camera.PictureSourceType.PHOTOLIBRARY;
break;
}
return {
quality: 90,
destinationType: Camera.DestinationType.DATA_URL,
sourceType: source,
allowEdit: false,
encodingType: Camera.EncodingType.JPEG,
popoverOptions: CameraPopoverOptions,
saveToPhotoAlbum: false,
correctOrientation:true
};
}
function saveMedia(type) {
return $q(function(resolve, reject) {
var options = optionsForType(type);
$cordovaCamera.getPicture(options).then(function(imageBase64) {
FileService.storeImage(imageBase64);
});
})
}
return {
handleMediaDialog: saveMedia
}
});
イオン3の例
CordovaプラグインとIonic Nativeプラグインをインストールします。
$ ionic cordova plugin add cordova-plugin-camera
$ npm install --save @ionic-native/camera
あなたのapp.module.tsはカメラを注入する必要があります：
import { Camera } from '@ionic-native/camera';
..........
@NgModule({
declarations: [
MyApp
],
imports: [
BrowserModule,
IonicModule.forRoot(MyApp),
...........
],
bootstrap: [IonicApp],
entryComponents: [
MyApp
],
providers: [
StatusBar,
SplashScreen,
Camera,
{provide: ErrorHandler, useClass: IonicErrorHandler},
..........
]
})
export class AppModule {}
カメラはIonic 3で簡単にアクションシートで使用できます。あなたのpage.tsは以下のようになります：
import { Camera, CameraOptions } from '@ionic-native/camera';
.........
export class YourPage {
private base64:any;
constructor(private camera: Camera,private actionsheetCtrl: ActionSheetController) { }
cameragalleryfun(){
let actionSheet = this.actionsheetCtrl.create({
title: 'Camera-Gallery',
cssClass: 'action-sheets-basic-page',
buttons: [
{
text: 'Camera',
icon: 'camera',
handler: () => {
//console.log('Camera');
const options: CameraOptions = {
quality: 60,
destinationType: this.camera.DestinationType.DATA_URL,
encodingType: this.camera.EncodingType.JPEG,
mediaType: this.camera.MediaType.PICTURE,
sourceType : this.camera.PictureSourceType.CAMERA,
targetWidth: 500,
saveToPhotoAlbum: false,
correctOrientation:true
}
this.camera.getPicture(options).then((imageData) => {
this.base64 = 'data:image/jpeg;base64,' + imageData;
}, (err) => {
// Handle error
});
}
},
{
text: 'Gallery',
icon: 'images',
handler: () => {
//console.log('Gallery');
const options: CameraOptions = {
quality: 60,
destinationType: this.camera.DestinationType.DATA_URL,
encodingType: this.camera.EncodingType.JPEG,
mediaType: this.camera.MediaType.PICTURE,
sourceType : this.camera.PictureSourceType.PHOTOLIBRARY,
targetWidth: 500,
saveToPhotoAlbum: false,
correctOrientation:true
}
this.camera.getPicture(options).then((imageData) => {
this.base64 = 'data:image/jpeg;base64,' + imageData;
}, (err) => {
// Handle error
});
}
},
{
text: 'Cancel',
role: 'cancel', // will always sort to be on the bottom
icon: 'close',
handler: () => {
//console.log('Cancel clicked');
}
}
]
});
actionSheet.present();
}
}
ボタンをクリックするようなイベントからcameragalleryfun関数を呼び出すと、画像のbase64文字列が返されます。さらに多くのオプションを適用できます。余分なオプションについては、 https : //github.com/apache/cordova-plugin-cameraを参照してください。
Modified text is an extract of the original Stack Overflow Documentation
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