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POBlackberry webworks 10 using image from picture taken\uploaded
 

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  1. POBlackberry webworks 10 using image from picture taken\uploaded
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    <p>I am stuck with an issue and I have no idea what to try next.</p> <p>In My application I offer my user a choice to either take a photo or choose a photo from the gallery. This part works fine, the problem arises with the saving\reading of the photo. Lets take this from the camera invoke perspective.</p> <pre><code>function startCameraApp() { PhotoTaken = false; blackberry.event.addEventListener("onChildCardClosed", sharePhoto); blackberry.invoke.invoke({ target: "sys.camera.card" }, onInvokeSuccess, onInvokeError); } </code></pre> <p>and in sharePhoto I have the following code...</p> <pre><code>function sharePhoto(request) { var image = new Image(); image.src = "file://" + request.data; image.onload = function () { // Now here I need to read the image file and convert it into base64. var resized = resizeMe(image); // the resizeMe function is given below and it simply makes my image smaller var imagedata = resized.split("base64,"); sessionStorage.setItem("MyNewPicture", imagedata); } } function resizeMe(img) { var canvas = document.createElement('canvas'); var max_width = 600; var max_height = 600; var width = img.width; var height = img.height; // calculate the width and height, constraining the proportions if (width &gt; height) { if (width &gt; max_width) { height = Math.round(height * max_width / width); width = max_width; } } else { if (height &gt; max_height) { width = Math.round(width * max_height / height); height = max_height; } } //resize the canvas and draw the image data into it img.width = width; img.height = height; canvas.width = width; canvas.height = height; canvas.classname += "ui-hidden"; var ctx = canvas.getContext("2d"); ctx.drawImage(img, 0, 0, width, height); return canvas.toDataURL(); } </code></pre> <p>So the app runs and it takes the photo and everything seems fine, yet the data uploaded to local storage is simply a blank screen. It works 100% in the blackberry 10 simulator, but not on my device. On the device it saves an empty string. </p> <p><strong>Edit</strong></p> <p>Ok. So I added this to my function for testing purposes and I am still stuck and I don't know what to do...</p> <pre><code>function sharePhoto(request) { var image = new Image(); image.src = "file://" + request.data; image.onload = function () { // Now here I need to read the image file and convert it into base64. var resized = resizeMe(image); // the resizeMe function is given below and it simply makes my image smaller var imagedata = resized.split("base64,"); alert(imagedata); // This returns a blank popup sessionStorage.setItem("MyNewPicture", imagedata); } } </code></pre>
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