我正在试图制作一个简单的应用程序来使用手机的相机。问题是，传递给CameraCtrl的Camera对象为空：传递给CameraCtrl的Camera对象为空
angular.module('app.controllers', [])
.controller('CameraCtrl', function($scope, Camera){
$scope.pictureUrl = "http://lorempixel.com/400/200/";
$scope.takePicture = function() {
console.log('taking picture...');
console.log(JSON.stringify(Camera));
var options = {
destinationType: Camera.DestinationType.DATA_URL,
encodingType: Camera.EncodingType.JPEG
};
Camera.getPicture(options)
.then(
function(data){
$scope.pictureUrl = "data:image/jpeg;base64," + data;
},
function(error){
});
};
})
当我按下“拍摄照片”按钮，我得到以下控制台日志：
0 347478 log taking picture... 1 347482 log {} 2 347507 error TypeError: Cannot read property 'DATA_URL' of undefined at Scope.$scope.takePicture (http://192.168.1.105:8100/js/controllers.js:11:52) at fn (eval at (http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:26457:15), :4:224) at http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:62386:9 at Scope.$eval (http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:29158:28) at Scope.$apply (http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:29257:23) at HTMLButtonElement. (http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:62385:13) at HTMLButtonElement.eventHandler (http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:16583:21) at triggerMouseEvent (http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:2948:7) at tapClick (http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:2937:3) at HTMLDocument.tapTouchEnd (http://192.168.1.105:8100/lib/ionic/js/ionic.bundle.js:3064:5)
这里的内容我services.js文件：
angular.module('app.services', [])
.factory('BlankFactory', [function(){
}])
.factory('Camera', ['$q', function($q) {
return {
getPicture: function(options) {
var q = $q.defer();
navigator.camera.getPicture(function(result) {
q.resolve(result);
}, function(err) {
q.reject(err);
}, options);
return q.promise;
}
};
}])
.service('BlankService', [function(){
}]);
controllers.js文件的开头：
angular.module('app.controllers', [])
.controller('CameraCtrl', function($scope, Camera){
$scope.pictureUrl = "http://lorempixel.com/400/200/";
$scope.takePicture = function() {
console.log('taking picture...');
console.log(JSON.stringify(Camera));
var options = {
destinationType: Camera.DestinationType.DATA_URL,
encodingType: Camera.EncodingType.JPEG
};
Camera.getPicture(options)
.then(
function(data){
$scope.pictureUrl = "data:image/jpeg;base64," + data;
},
function(error){
});
};
})
的app.js文件：
angular.module('app', ['ionic', 'app.controllers', 'app.routes', 'app.directives','app.services',])
.run(function($ionicPlatform) {
$ionicPlatform.ready(function() {
// Hide the accessory bar by default (remove this to show the accessory bar above the keyboard
// for form inputs)
if (window.cordova && window.cordova.plugins && window.cordova.plugins.Keyboard) {
cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
cordova.plugins.Keyboard.disableScroll(true);
}
if (window.StatusBar) {
// org.apache.cordova.statusbar required
StatusBar.styleDefault();
}
});
});
而且index.html文件：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title></title>
<script src="lib/ionic/js/ionic.bundle.js"></script>
<!-- cordova script (this will be a 404 during development) -->
<script src="cordova.js"></script>
<script src="lib/ngCordova/dist/ng-cordova.js"></script>
<!-- IF using Sass (run gulp sass first), then uncomment below and remove the CSS includes above
<link href="css/ionic.app.css" rel="stylesheet">
-->
<link href="lib/ionic/css/ionic.css" rel="stylesheet">
<style type="text/css">
.platform-ios .manual-ios-statusbar-padding{
padding-top:20px;
}
.manual-remove-top-padding{
padding-top:0px;
}
.manual-remove-top-padding .scroll{
padding-top:0px !important;
}
ion-list.manual-list-fullwidth div.list, .list.card.manual-card-fullwidth {
margin-left:-10px;
margin-right:-10px;
}
ion-list.manual-list-fullwidth div.list > .item, .list.card.manual-card-fullwidth > .item {
border-radius:0px;
border-left:0px;
border-right: 0px;
}
</style>
<script src="js/app.js"></script>
<script src="js/controllers.js"></script>
<script src="js/routes.js"></script>
<script src="js/directives.js"></script>
<script src="js/services.js"></script>
<!-- Only required for Tab projects w/ pages in multiple tabs
<script src="lib/ionicuirouter/ionicUIRouter.js"></script>
-->
</head>
<body ng-app="app" animation="slide-left-right-ios7">
<div>
<div>
<ion-nav-bar class="bar-stable">
<ion-nav-back-button></ion-nav-back-button>
</ion-nav-bar>
<ion-nav-view></ion-nav-view>
</div>
</div>
</body>
</html>