Actionscript :: Download Multiple Large Files And Saving Locally - URLStream Or URLLoader?
Feb 17, 2011
This is absolutely driving me crazy. While I'm a fan of the availability of asynchronous calls in AIR, I'm finding that being forced to use them for something that should be SUPER simple is a severe limitation. So severe that I may end up abandoning AIR and writing native Android and iOS apps instead of using the shared AIR platform.
OK, now that I have that off my chest, here's what I'm trying to accomplish. I have an app that, when deployed, is relatively small. But once deployed to a user's device that user will log in using a login name/password. Once they log in, content specific to that user needs to be downloaded and saved to the local device. Since the content varies by user I can't include it in the package for deployment.
But I cannot figure out how to accomplish this: say I want to download 10 files and each file is 2-3mb and I want to show a "Downloading, please wait..." view during the download. The application cannot proceed until all 10 files are downloaded. But since from what I've seen URLStream and URLLoader are both async I cannot figure out how to block the app from opening the "View available content" and say on the "Downloading, please wait..." view.
My website allows users to upload photographs which I store on Amazon's S3. I store the original upload as well as an optimized image and a thumbnail. I want to allow users to be able to export all of their original versions when their subscription expires. So I am thinking the following problems arise.Could be a large volume of data (possibly around 10GB)How to manage the download process - eg make sure if it gets interrupted where to start from again, how to verify successful download of files.Should this be done with individual files or try and zip the files and download as one file or a series of smaller zipped files.Are there any tools out there that I can use for this? I have seen Fzip which is an Actionscript library for handling zip files. I have an EC2 instance running that handles file uploads so could use this for downloads also - eg copy files to EC2 from S3, Zip them then download them to user via Flash downloader, use Fzip to uncompress the zip folder to user's hard drive.
I am currently developing a form that saves all text fields, and creates a text file for each field. Some fields require a lot of information, so I figured (I think its called) URL Encoding wouldn't be useful. I can save one text field, to one text file good.how to save multiple text fields on the same frame, to multiple text files.[code]My text fields are named t2, t3... t9.Also, I run into no compiler errors.
I coded a multiple file uploader using the FileReferenceList and PHP. It works great for me all the time on my Fios internet connection, which is by far faster then DSL, etc... So my issue kinda went unnoticed until I got on a DSL connection. Now, many of the files I was uploading seem to be timing out, but there is no indication of this. No errors, etc... just stops its progress and NEVER finishes. Tried bumping up the script execution time on the server
I am currently developing a form that saves all text fields, and creates a text file for each field. Some fields require a lot of information, so I figured (I think its called) URL Encoding wouldn't be useful. I can save one text field, to one text file good. The issue I'm running into, is how to save multiple text fields on the same frame, to multiple text files.Currently this is the code I have now:
How do I download multiple files at once from a browser without combining them into single file? I found all kinds of multiple file uploaders, but downloaders are missing. There is only JUpload, but it's old and became buggy recently. I believe both Java and Flash can do this: select a folder at client's HD and download everything there.
I've built an audio player that is fed via an xml file. Users can use a 'previous' or 'next' button to select which track to listen to and then play it and this is all fine and works as it should. The problem I have is with the file reference class. I want users to be able to have the option of downloading the track. I can get this function to work once but once you download a track, choose another, then click the download button again I get the error message below:
I'm currently working on a Flex3/blazeDS/Spring/Oracle project. My requirement is display a list of files from an external FTP server in a grid, user can select single file or multiple files to download, and if user selects multiple files I should tar the files on the FTP server and download the tar file from FTP server to user disk. As per my understanding on the File Download in Flex we have 2 ways to do it. 1) File Reference 2) Using navigateURL and call server side JSP/Servlets to download files.
1) For FileReference we need to download the data first and prompt the user to save the file by clicking on some button. We cannot prompt the 'Save' dialogue without the click event for Security reasons in Flex (Workaround). But my client hates this process because its two steps and he want it in one step like normal file download with only 'Save' dialogue. Then I tried the second option.
2) navigateURL. Open a new windows make a post url request for to JSP/Servlets and prompt the 'Save' dialogue. The problem I am facing here is the pop-up window does not close once the download is complete. navigateURL does not return any reference to the window to close the window. I even tried different content types and headers and java script but none seems to work. The window closes when it is a single file and not for the tar or zip file. I would like to download the popup window for any type of downloads. I am using IE7.
Can I develop a Flash AS3 download swf that will let a user select a location on their hard drive to download files to and then start the download of multiple files (in the same way I can do with upload)? Or should I zip all the multiple files first and download zipped files to local disk. My users will want to download potentially hundreds of images from a server to local disk so I dont want them to have to click save for each one. Will AS3 let me pass an array of filenames and store the location that the user originally chooses? I ask because this sounds like it would have been not allowed for security reasons.
I have an offline presentation for a client that needs to have a form submitted data saved local on the machine (kiosk) to be gathered later.I researched on google and found fscommand to write to a txt file but this no longer works and is sorta sloppy.
I'm trying to read the width and height of a locally loaded image. This seems to work for images that do not exceed the dimensions limited by the Flash Player 10 [URL], but as soon as the images are bigger, the width and height remain 0. The strange thing is that now and then, I can read the dimension of these bigger images, but most of the times not. I understand that this might be because of the player limitation, but then I would at least expect the error to be consistent.
I want to check this since there is no use in loading such a big image as it will not be displayed anyway, but it would be good to provide a detailed error message to the user.
Here's the code that I use to load the image locally and read the dimension:
private function chooseImageButton_clickHandler(event:Event):void { var allowedTypes:String = "*.jpg;*.png"; m_uploadFileReference = new FileReference(); m_uploadFileReference.addEventListener(Event.SELECT,
I generate a HTML page with VB.Net which stores several pinks to files. These links are formatted with JavaScript looking like the Windows-Explorer with folders and files. The problem: There are only download links for the files, not for Folders. A folder can contain Subfolders ,a List of Files or a combination of both. So if I want to download a folder, I have to click manually on every file-link. I have not the possibility to insert PHP or another Server-side language. my question now is: Is there a client side way to Download them by click on a Folder? I prefer Javascript but If it isn't possible Flash will be ok also.
The app itself will require some data from an online database to be downloaded and stored locally, so that the kiosk can be safely disconnected from the internet while running, and reconnected later to update its data.I'm currently trying to figure out the best way to do this. I figured that the data's easily enough loaded from a server-side PHP script and saved to a local SQLite database for offline usage, but I haven't been able to find any solid method of downloading and saving images. At least, not without using a save dialog.
I am attempting to capture a very large image that was made dynamically within the Flash Player (the size of the image is 2400px by 12,000px) and am running into some very serious issues... Let me run down how the image get's to that size in the first place:
User adds elements to a canvas and then when the user is finished the canvas scales up to 2400px wide and ~12,000px tall. The problem arises when I attempt to save the image to the hard drive. Now, I dont know if this will affect the recommended fix, but the rendered image wont be saved on the hard drive, it will be sent to a server. I know about the ~4050px limit in Flash Player and was thinking I could get around that by clipping the images with the ImageSnapshot.captureBitmapData() method and keeping the required Rectangle variable below 4000px then repeat that down the large image until it reaches the end where the final images will be pieced together at a later time. However... As i mentioned the error comes when it reaches the 'fileReference.save(pngImage);' method..
I was messing around with some old examples, and I ran into an unfinished example where several 30k-100k XML files are loaded and stored as a string into an Array. The code looks basically like:[code]Basically, when I trace the 'this', the order of the files that are loaded is off. Out of about 10 tries, about 3 times the order is perfect. The remaining 7 times, the order is a bit off. Does anybody have a suggestion on how to ensure the files are loaded prior to the next file being loaded? I tried placing a while loop that basically delays the clock for a few milliseconds, and that didn't work either. Besides, that is not really a good solution to arbitrarily waste clock cycles.
I am have to build a Flash aplication, that has to download a XML from a differente server and save on it's own server, at a predefined time of the day. Is it possible ans safe to make that in flash using AS3?
I was wondering whether there's a way to save the "trace" output to a text file on the user's machine. I know we can use the flash debugger for this purpose but is there a better and more efficient way?
I have an Flex app that loads xml files with URLLoader/URLRequest methods, and works perfectly. The problem is that the .xml files are stored in "Temporary Internet Files" folder of the browser, and we dont want that the user can open or read those .xml files. Do you know any way to prevent that xml files are stored in the user browser cache folder? or any alternative way to load the data of the xml files, or read it directly from the server?
I have created many flash video over the years so I definitely know how to embed an flv into flash. Also, it is very hard to screw up the import video wizard in flash so I have eliminated that as a potential problem. I haven't created a movie in quite a few months and yesterday I tried to create one. I used the wizard in flash to import the working flv and when i hit ctrl+enter to preview, a blank white screen showed up. When I right clicked, it said movie not loaded. So I tried to use AS3 and netconnection to embed the movie. When I previewed it, the same thing happened. I then went to view one of my existing swf's that did not have a video and that did not work either. I searched and found the adobe flash player security preferences and changed settings and NOW I can view swf's that do not have video. I can ALSO view old swf's that have video embedded BUT as soon as I open the original fla file and press ctrl+enter to preview, the swf's DO NOT preview anymore
I want to download files from the server side to client side without prompting a window to the user to download when any updates happen at server side.Right now I am using urlstream class but first file is downloading completely rest of the files contents downloading partially.
editCode sample taken from other post. Warning: it's a huuuge chunk o'code.
If I have a flash file that I'd like to test locally (on my computer) but I have video files on a flash video server and photos on another server, is there an easy way to set up my flash file so I can do this?
I've built loads of preloaders in AS2 before. However I never ecountered so many problems as now. I'm confused about many things with preloading in AS3. This is my layout:I have a single frame on the first scene of my movie. The main content is inside a movieClip called container, placed on frame 1 of my next scene, which inherits from the class that holds the main code to initialize the game.(I read that this way my code will not try to access any movieClips, or sprites before they have been loaded... as they are not actually referenced from a document class).However my 1st frame where I have my preloader takes ages to load... My first question is... Does this happen because the loading procedure is different now? Or has it always worked like this... so that would mean that as I have many heavy assets in my library that are meant to load on frame 1. (Exported for actionscript in properties).I have a blank movie for a while. I'm using a simple code:
What are, nowadays, the best practices for uploading a large file (which may cause a timeout) with ASP.NET Web Forms and/or MVC? Increase Server.ScriptTimeout (only for the specific POST request); Use some flash client-side uploader like swfupload ([URL]) or plupload ([URL]), but Flash uploads have some issues with proxies; Use some gmail-like javascript (like [URL]
I have a site that deals with large video files (sports videos). The site allows users to upload any source file, but most of the videos come from DVDs. I am currently using a modified version of jumploader to encode and upload files to the webserver with an HTTP request. The jumploader is a java client, and looking at my webstats, only about 75% of my users have java installed.
What I want: I have looked for a flash based uploader that transfers a byte stream to a server. Byte streams would be ideal so I can capture partial videos for failed uploads. I have also looked for flash-based ftp clients, but I haven't found anything promising. There are some flash-based uploaders that post via HTTP, and I'm considering this. I do not want to use a simple file post. Some upload methods also put the full file into memory first, and this obviously is not an option for me.
