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POWrite file to sd card in android as image file
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  1. POWrite file to sd card in android as image file
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    copied!<p>I would like to ask you here about some problem.</p> <p>I am using Phonegap to build an application that can take photo and then show the picture in a canvas.After drawimage in the canvas, I use a method to convert canvas to image file. But I have a problem related to writing file as image file to SD Card in Android,i.e, I cannot read the image file that was created in SD Card (image is invalid).</p> <p>Here is my code:</p> <pre><code>var picture = ""; function takePhoto() { navigator.camera.getPicture(onCameraSuccess, onCameraError,{ quality : 50, destinationType : Camera.DestinationType.FILE_URI //saveToPhotoAlbum: true }); } function onCameraSuccess(imageURL) { var canvas = document.getElementById('myCanvas'); var ctx=canvas.getContext("2d"); var imageObj = new Image(); imageObj.onload = function() { ctx.drawImage(imageObj, 0, 0,220,180); }; imageObj.src=imageURL; picture = imageURL; } function onCameraError(e) { console.log(e); navigator.notification.alert("onCameraError: " + e +" (" + e.code + ")"); } function storePhoto() { movePic(pictures); } function movePic(){ window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail); } function gotFS(fileSystem) { fileSystem.root.getFile("test.PNG", {create: true, exclusive: false}, gotFileEntry, fail); } function gotFileEntry(fileEntry) { fileEntry.createWriter(gotFileWriter, fail); } function gotFileWriter(writer) { var c = document.getElementById('myCanvas'); var img_from_canvas=c.toDataURL("image/png"); // base64 encoded var pic = img_from_canvas.split("base64,"); var pictures =window.atob(pic[1]); // decode base64 writer.write(pictures); alert("Your picture was successfully stored !") } function fail(error) { console.log(error.code); } </code></pre> <p>I am appreciated for your helps and suggestion.</p>
 

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