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POHow to save PDFs from assets/www folder via XHR to Filesystem in Cordova?
 

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  1. POHow to save PDFs from assets/www folder via XHR to Filesystem in Cordova?
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    <p>I am trying to get a PDF displaying in Cordova iOS (and potentially later Android) using PDFjs. It seems that PDFjs needs the files served from a webserver in order to use its normal load function but it will accept a PDF encoded as a Uint8Array. </p> <p>I have attempted to use Cordova's <code>FileAPI</code> which has methods for loading to Uint8Array to load the PDF which can load from the <code>Documents</code> folder but from what I can tell the API appears not have the ability to access files in <code>www</code>. </p> <p>The PDF's need to be initially bundled with the Application and will need to be updatable through the app if they get out of sync so I would like to be able to have them as part of the source and then copy them to the Documents folder to be manipulable/over-writable. </p> <p>How do I copy Files from the <code>www</code> folder to the <code>Documents</code> folder? I imagine this is a common scenario but have had trouble finding examples of this online. </p> <p>Any help appreciated.</p> <p>Rickard</p> <h3>Update</h3> <p>So far I have been able to use file transfer to download files from a separate webserver:</p> <pre><code>var fileTransfer = new FileTransfer(); fileTransfer.download( 'http://localhost:8080/data/output8.pdf',// This is a webserver I am running _fileSystem.root.fullPath+'/output8.pdf', function(entry) { console.log("download complete: " + entry.fullPath); }, function(error) { console.log("download error source " + error.source); console.log("download error target " + error.target); console.log("upload error code" + error.code); } ); </code></pre> <p>So this is great if I wanted to download all the PDFs from a remote server but I need to download them from the <code>www</code> folder and I cant seem to find the path to do that. I have tried: <code>file:///data/output8.pdf</code> , <code>data/output8.pdf</code> and <code>/data/output8.pdf</code></p> <p>What is the correct way to reference these paths?</p> <h3>Update 2 - Dead End Cannot Save as Binary</h3> <p>So I am still stuck on this hours later. I have gotten PDFjs rendering correctly but only from the files I serve from a webserver then FileTransfer to the local filesystem but not the files I bundle in with the application. I managed to load the file from www to an ArrayBuffer using XHR but cannot save it. </p> <pre><code>var xhr = new XMLHttpRequest(); xhr.open('GET','data/output8.pdf',true); xhr.responseType = 'arraybuffer'; xhr.onload = function(e){ var itWorked=this.status==0&amp;&amp;(this.response instanceof ArrayBuffer); console.log(itWorked?'looks like it worked':'hmm there was an issue: '+this.status); var myArrayBuffer = this.response; theFileSystem.root.getFile('output8.pdf',{create:true},function(entry){ entry.createWriter(function(fileWriter){ fileWriter.onwrite = function(){ console.log('file has been written'); }; // Turns out the following does not work in // Cordova which cannot write binary to a file. var blob = new Uint8Array(myArrayBuffer); fileWriter.write(blob);//Doesnt work },fail); },fail); } xhr.ontimeout=function(e){ console.log('timeout'); } xhr.send(); </code></pre>
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    1. COHave you implemented Pdf.js in Cordova iOS ?
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      1. POHow to save PDFs from assets/www folder via XHR to Filesystem in Cordova?
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    2. CONot as of yet. I understand the issue with it not loading is likely due to files not being served through a webserver hence my attempt to load as Uint8Array via Cordova's FileAPI.
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      1. POHow to save PDFs from assets/www folder via XHR to Filesystem in Cordova?
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    3. COyou can use FileTransfer
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      1. POHow to save PDFs from assets/www folder via XHR to Filesystem in Cordova?
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