Capture photo with camera in cordova app
I keep learning on cordova and javascript (I need it). I am trying to create a very small application that uses a camera. For this I am using the code below [ http://cordova.apache.org/docs/en/2.5.0/cordova_camera_camera.md.html#Camera] and I am trying to adapt this code in the cordova project in netbeans.
I get the code below. I provide my index.html and my index.js. I have a problem when I am testing an emulator. When I click on the button, nothing happens, there is no error message, nothing and obviously not being captured by the camera. there seems to be a line issue in the capturePhoto method because I have a warning in netbeans (the destinationType global variable is not declared). Could you help me please?
index.html
<head>
<meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *">
<meta name="format-detection" content="telephone=no">
<meta name="msapplication-tap-highlight" content="no">
<meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">
<title>Hello World</title>
<link rel="stylesheet" type="text/css" href="css/index.css">
</head>
<body>
<div class="app">
<h1>Apache Cordova</h1>
<div id="deviceready" class="blink">
<p class="event listening">Connecting to Device</p>
<p class="event received">Device is Ready</p>
</div>
</div>
<button id="myBtn">Capture Photo</button> <br>
<img style="display:none;width:80px;height:80px;" id="smallImage" src="" />
<img style="display:none;" id="largeImage" src="" />
<script>
document.getElementById("myBtn").addEventListener("click", capturePhoto());
</script>
<script type="text/javascript" src="cordova.js"></script>
<script type="text/javascript" src="js/index.js"></script>
</body>
index.js
var app = {
pictureSource: "",
destinationType: "",
// Application Constructor
initialize: function () {
this.bindEvents ();
},
// Bind any events that are required on startup. Common events are:
// 'load', 'deviceready', 'offline', and 'online'.
bindEvents: function () {
document.addEventListener ('deviceready', this.onDeviceReady, false);
},
// deviceready Event Handler
// The scope of 'this' is the event. In order to call the 'receivedEvent'
// function, we must explicitly call 'app.receivedEvent (...);'
onDeviceReady: function () {
app.receivedEvent ('deviceready');
app.pictureSource = navigator.camera.PictureSourceType;
app.destinationType = navigator.camera.DestinationType;
},
// Update DOM on a Received Event
receivedEvent: function (id) {
var parentElement = document.getElementById (id);
var listeningElement = parentElement.querySelector ('. listening');
var receivedElement = parentElement.querySelector ('. received');
listeningElement.setAttribute ('style', 'display: none;');
receivedElement.setAttribute ('style', 'display: block;');
console.log ('Received Event:' + id);
},
// Called when a photo is successfully retrieved
onPhotoDataSuccess: function (imageData) {
var smallImage = document.getElementById ('smallImage');
smallImage.style.display = 'block';
smallImage.src = "data: image / jpeg; base64," + imageData;
},
// A button will call this function
capturePhoto: function () {
navigator.camera.getPicture (onPhotoDataSuccess, onFail, {quality: 100, destinationType: destinationType.DATA_URL});
},
// Called if something bad happens.
onFail: function (message) {
alert ('Failed because:' + message);
}
};
app.initialize ();
thanks again for the help for the help
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In your appeal to navigator.camera.getPicture
you need destinationType: Camera.DestinationType.DATA_URL
, not destinationType: destinationType.DATA_URL
. You must also specify sourceType and mediaType so that you can do something like this:
function capturePhoto() {
var options = {
quality: 100,
destinationType: Camera.DestinationType.DATA_URL,
sourceType: Camera.PictureSourceType.CAMERA,
mediaType: Camera.MediaType.CAMERA,
encodingType: Camera.EncodingType.JPEG,
saveToPhotoAlbum: true
};
navigator.camera.getPicture(onPhotoDataSuccess, onFail, options);
}
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