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javascript - Phonegap Camera API - Cannot read property 'DATA_URL' of undefined

I am creating an Android app using Phonegap.

I have installed phonegap using the commands on their website.

Everything is up and running with the SDK and Emulator.

Now when I run the example camera script from their website to get it working before I start cusotmising it.

Everytime I run the code below (even though I have the file linked to phonegap.js) it keeps throwing an error. I mean the script runs as far as the HTML and showing the buttons, but when the button is clicked nothing happens and in the log it says: Cannot read property 'DATA_URL' of undefined.

    <!DOCTYPE html>
<html class="no-js">
    <head>
        <meta charset="utf-8" />
        <meta name="format-detection" content="telephone=no" />
        <!-- WARNING: for iOS 7, remove the width=device-width and height=device-height attributes. See https://issues.apache.org/jira/browse/CB-4323 -->
        <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />
        <link rel="stylesheet" type="text/css" href="css/index.css" />
        <script type="text/javascript" src="phonegap.js"></script>
        <link rel="stylesheet" href="css/foundation.css" />
        <script src="js/vendor/modernizr.js"></script>
        <title>Retouch</title>
        <script type="text/javascript" charset="utf-8">
        var pictureSource;   // picture source
        var destinationType; // sets the format of returned value 

        // Wait for PhoneGap to connect with the device
        //
        document.addEventListener("deviceready",onDeviceReady,false);

        // PhoneGap is ready to be used!
        //
        function onDeviceReady() {
            pictureSource=navigator.camera.PictureSourceType;
            destinationType=navigator.camera.DestinationType;
        }

        // Called when a photo is successfully retrieved
        //
        function onPhotoDataSuccess(imageData) {
          // Get image handle
          //
          var smallImage = document.getElementById('smallImage');

          // Unhide image elements
          //
          smallImage.style.display = 'block';

          // Show the captured photo
          // The inline CSS rules are used to resize the image
          //
          smallImage.src = "data:image/jpeg;base64," + imageData;
        }

        // Called when a photo is successfully retrieved
        //
        function onPhotoFileSuccess(imageData) {
          // Get image handle
          console.log(JSON.stringify(imageData));

          // Get image handle
          //
          var smallImage = document.getElementById('smallImage');

          // Unhide image elements
          //
          smallImage.style.display = 'block';

          // Show the captured photo
          // The inline CSS rules are used to resize the image
          //
          smallImage.src = imageData;
        }

        // Called when a photo is successfully retrieved
        //
        function onPhotoURISuccess(imageURI) {
          // Uncomment to view the image file URI 
          // console.log(imageURI);

          // Get image handle
          //
          var largeImage = document.getElementById('largeImage');

          // Unhide image elements
          //
          largeImage.style.display = 'block';

          // Show the captured photo
          // The inline CSS rules are used to resize the image
          //
          largeImage.src = imageURI;
        }

        // A button will call this function
        //
        function capturePhoto() {
          navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 50,
            destinationType: destinationType.DATA_URL });
        }

        function capturePhotoEdit() {
          navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 20, allowEdit: true,
            destinationType: destinationType.DATA_URL });
        }

        // A button will call this function
        //
        function getPhoto(source) {
          // Retrieve image file location from specified source
          navigator.Camera.getPicture(onPhotoURISuccess, onFail, {
         quality: 50, 
         destinationType: navigator.camera.DestinationType.FILE_URI,
         sourceType: pictureSource
    });

        // Called if something bad happens.
        // 
        function onFail(message) {
          alert('Failed because: ' + message);
        }

        </script>
    </head>
    <body>
      <!-- Navigation bar -->
        <div class="fixed">
          <nav class="top-bar fixed" data-topbar>
            <ul class="title-area">
              <li class="name">
                <h1 class="navmsg">
                  <script>
                  var Digital=new Date()
                  var hours=Digital.getHours()

                  if (hours>=5&&hours<=11)
                  document.write('<b>Good Morning.</b>')
                  else if (hours==12)
                  document.write('<b>Good Afternoon.</b>')
                  else if (hours>=13&&hours<=17)
                  document.write('<b>Good Afternoon.</b>')
                  else if (hours>=18&&hours<=20)
                  document.write('<b>Good Evening.</b>')
                  else if (hours>=21&&hours<=11)
                  document.write('<b>Hello!</b>')
                  else
                  document.write('<b>Hello!</b>')
                  </script>
                </h1>
              </li>
              <li class="toggle-topbar menu-icon"><a href="#">Account</a></li>
            </ul>
          </nav>
        </div>

        <button onclick="capturePhotoWithData();">Capture Photo With Image Data</button> <br>
        <button onclick="capturePhotoWithFile();">Capture Photo With Image File URI</button> <br>
        <button onclick="getPhoto(pictureSource.PHOTOLIBRARY);">From Photo Library</button><br>
        <button onclick="getPhoto(pictureSource.SAVEDPHOTOALBUM);">From Photo Album</button><br>
        <img style="display:none;width:60px;height:60px;" id="smallImage" src="" />
        <img style="display:none;" id="largeImage" src="" />

        <script type="text/javascript" src="phonegap.js"></script>
        <script type="text/javascript" src="js/index.js"></script>
        <script src="js/vendor/jquery.js"></script>
        <script src="js/foundation.min.js"></script>
        <script>
          $(document).foundation();
        </script>
        <script type="text/javascript">
            app.initialize();
        </script>
    </body>
</html>`

I have tried to use the following:

<script type="text/javascript" src="phonegap.js"></script>

and

<script type="text/javascript" src="cordova.js"></script>

Nothing seems to work.

I have changed the following in capturePhoto() and capturePhotoEdit() from:

destinationType.DATA_URL

to

Camera.DestinationType.DATA_URL

Still no luck with the functionality. I suspect it has something to do with the cordova plugin and phonegap, as I only have phonegap.js included in the script. I'm also reading about settings in the config.xml, which I have done through command line (unless I have done it wrong) following the docs.

I have built the application by CL:

phonegap build android

The following code with cordova-2.5.0.js and destinationType.FILE_URI added has successfully enabled the getPhoto() functions and allows me to display the photos in library/album.

    <!DOCTYPE html>
<html class="no-js">
    <head>
        <meta charset="utf-8" />
        <meta name="format-detection" content="telephone=no" />
        <!-- WARNING: for iOS 7, remove the width=device-width and height=device-height attributes. See https://issues.apache.org/jira/browse/CB-4323 -->
        <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />
        <link rel="stylesheet" type="text/css" href="css/index.css" />
        <script type="text/javascript" src="phonegap.js"></script>
        <link rel="stylesheet" href="css/foundation.css" />
        <script src="js/vendor/modernizr.js"></script>
        <title>Retouch</title>
        <script type="text/javascript" charset="utf-8" src="cordova-2.5.0.js"></script>
        <script type="text/javascript" charset="utf-8">

        var pictureSource;   // picture source
        var destinationType; // sets the format of returned value 

        // Wait for Cordova to connect with the device
        //
        document.addEventListener("deviceready",onDeviceReady,false);

        // Cordova is ready to be used!
        //
        function onDeviceReady() {
            pictureSource=navigator.camera.PictureSourceType;
            destinationType=navigator.camera.DestinationType;
        }

        // Called when a photo is successfully retrieved
        //
        function onPhotoDataSuccess(imageData) {
            // Uncomment to view the base64 encoded image data
            //alert(imageData);  

            // Get image handle
            //
            var smallImage = document.getElementById('smallImage');
            // Unhide image elements
            //
            smallImage.style.display = 'block';

            // Show the captured photo
            // The inline CSS rules are used to resize the image
            //
            smallImage.src = "data:image/jpeg;base64," + imageData;
        }

        // Called when a photo is successfully retrieved
        //
        function onPhotoURISuccess(imageURI) {
            alert("inside large image")
            // Uncomment to view the image file URI 
            // console.log(imageURI);

           // Get image handle
           //
            var largeImage = document.getElementById('largeImage');

          // Unhide image elements
          //
            largeImage.style.display = 'block';

          // Show the captured photo
          // The inline CSS rules are used to resize the image
          //
            largeImage.src = imageURI;
        }

        // A button will call this function
        //
        function capturePhoto() {
          // Take picture using device camera and retrieve image as base64-encoded string
            navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 50,
            destinationType: destinationType.FILE_URI });
        }

        // A button will call this function
        //
        function capturePhotoEdit() {
          // Take picture using device camera, allow edit, and retrieve image as base64-encoded string  
            navigator.camera.getPicture(onPhotoDataSuccess, onFail,
            { quality: 20, allowEdit: true,
            destinationType: destinationType.FILE_URI });
        }

  

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1 Answer

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That is a Javascript error. You are trying to access a property of an undefined variable. This line (in the capturePhoto and capturePhotoEdit methods):

destinationType.DATA_URL

should be:

Camera.DestinationType.DATA_URL

One more thing: With Cordova it is always good to have the docs at hand, and have a look at them each time you are using a new plugin, or when you upgrade to a newer version (they tend to change the API frequently, hence the examples found in Google usually show legacy code). Here you have the Camera plugin documentation.


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