fileapi

问题 What is the difference in using window.resolveLocalFileSystemURL vs window.requestFileSystem when downloading files with the cordova file plugin? I cant find any documentation on resolveLocalFileSystemURL but it works fine, and its easier to use? Which one should I use for simple CRUD operations in a cordova app? (I use cordova 3.4.0-0.1.3) I use it like this: function onResolveSuccess(fileEntry) { fileEntry.file(function(file) { var reader = new FileReader(); reader.onloadend = function(evt)

问题 I have made me a simple file field: <input type="file" name="pictures_array[]" multiple accept="image/*" id="page_pictures_array" /> and some HTML5 File API code to list the files: $('.page-form #page_pictures_array').change(function(evt) { var file, files, reader, _i, _len; files = evt.target.files; console.log(files); $('#file-list').empty(); for (_i = 0, _len = files.length; _i < _len; _i++) { file = files[_i]; reader = new window.FileReader; reader.onload = (function(file) { return

问题 I think the solution to this is staring me in the face, but I can't seem to find it. So, I'm making a site that has a small file upload section. The upload section will have a place to upload an image for different devices and device orientations (i.e. iPhone, iPad, portrait and landscape). I can easily figure out how to implement the drag & drop on the individual device icons, but if the user misses the drop area, the browser will just navigate to that image on their system. How do I disable

问题 There are some nice examples about file uploading at HTML5 Rocks but there are something that isn't clear enough for me. As far as i see, the example code about file slicing is getting a specific part from file then reading it. As the note says, this is helpful when we are dealing with large files. The example about monitoring uploads also notes this is useful when we're uploading large files. Am I safe without slicing the file? I meaning server-side problems, memory, etc. Chrome doesn't

问题 I am trying for hours to use the HTML5 FileSystem to add a remote file with an URL (like http://example.com/doc.pdf) instead of the file obtained by the file input because I want the process to be automatic (I have more than one doc) but I didn't found anything about the process... All examples I found concern local files (added with a file input)... I give you few lines of my code : window.requestFileSystem(TEMPORARY, 1024 * 1024 * 10, function(fs) { FS_ = fs; addRemoteDocuments(); },

问题 I'll be honest, way out of my depth here so any help or guidance would be great. I have a very basic input form that allows me to choose multiple images from local folders and display them on the page as well as display info such as file type/name/size. I'd like to be able to drag and drop images into the page, rather than manually search for the images each time. This is where I'm stuck. I have no idea what I need to google to get my desired result. I've seen a lot around the file API that I

问题 I want to traverse through each file in the SD card inside all the directories and sub directories using the FILE API of phonegap (which is the w3c file api actually). I have to perform a certain set of operations on these files by looking at their nature. I donot want to search for specific types of files, but traverse through each file in a sequential manner. Can someone please help me with this? Just a basic loop framework with the necessary requirements for the traversal would be a great

问题 I'm using Javascript to write an application that will be used with Phonegap to make an Android application. I'm using the Phonegap File API to read directories and files. The relevant code is shown below: document.addEventListener("deviceready", onDeviceReady, false); // PhoneGap is ready // function onDeviceReady() { window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, onFileSystemSuccess, fail); } function onFileSystemSuccess(fileSystem) { fileSystem.root.getDirectory("/sdcard", {create

问题 I was trying to create a file using the file system API in chrome. Initially I tried PERSISTENT storage as follows window.requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem; webkitStorageInfo.requestQuota(webkitStorageInfo.PERSISTENT, 1024*1024, function(grantedBytes) { window.requestFileSystem(webkitStorageInfo.PERSISTENT, grantedBytes, onInitFs, errorHandler); }, errorHandler); It was working fine initially. But now when I try the same code is giving me the

问题 I'm using the HTML5 FileSystem API in a Chrome Packaged App to write to a log file. I want the user to be able to download this file, so I tried something along the lines of: fs.root.getFile('log.txt', {create: false}, function(fileEntry) { var url = fileEntry.toURL(); // do something with the file url }); This doesn't help though, because the URL is something like filesystem:chrome-extension://eekedjcagggbfigdmifkmhkjbhiklnpj/temporary/log.txt and it's not possible to open it somewhere. What