I've looked up many topic but none seems to do what i need.
I am working on a website with flutter and i need to read a file thats located on the server.
Is this in any way possible?
Edit: The contents in this file change, so i have to update the contents on the website.
If you want to be able to access the file as if it was locally stored, then it needs to be registered under your assets in your pubspec.yaml & should be included in the project itself. Otherwise, you will have to fetch the file using something like DIO to fetch it from wherever it is hosted.
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Thanks already. I stuck in this example for weeks.
in other examples mostly use apps own assets folder
I dont want to add file to asset folder.
I just want to get data from outside the app
and I want to assign this data to a variable
Filepicker package will solve the problem here is the link
You can access file name , path with this package
I know about the path_provider package but it doesn't do what i want, or maybe I'm not just using it right. I read after so many trials and errors that the getApplicationDocumentsDirectory() returns a directory that is accessible only by the app itself, but what if i want to write to a phone's local document directory or so and be able to view the file in my file explorer later on?
If you want to save where the file explorer reaches, you must use the method getExternalStorageDirectory(). It only works in Android and you'll need READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE permissions.
Actually, you're able to find the files saved using getApplicationDocumentsDirectory() and getTemporaryDirectory() as well, but you'd need root access.
I am currently trying to download a small binary file from the web, in order to upload that to another website, both using the API.
Previous versions seemed to have the "file" API module for such purposes, but I can't see anything similar as of the latest (1.14).
The file to be downloaded would be saved in some form of cache (browser cache, preferably), its path stored somewhere, to be then uploaded to another URL via POST.
How would I go about it, when the process should happen completely in the background?
I checked out the how to download a file page, but can't figure out where to download.
Is there a variable URI for the "Downloads" directory, and does a regular Add-On has write privileges in it?.
This is important, because the add-on must be able to function properly on various platforms.
You can use the pref, browser.download.lastDir, which should work for windows/mac as it will be saved in the OS format. However the pref may not always be set if the person has never downloaded anything before. In that case you'll have to build the directory yourself.
var dir = require("sdk/preferences/service").get('browser.download.lastDir');
To build the directory yourself you're going to have to go a little deeper. Check this article on MDN about File I/O which has examples. The DfltDwnld key should give you the directory you want.
Your add-on will have write permissions to everything Firefox has write permission to.
I have a form in which you enter some data and you are able to attach files. All I wanna do is have a Browse button so i can select the file and store that file url in some var, so later when i want to submit the form...y can read that var and upload the file using its url. Im using Scala Lift. I search for examples in the web but couldnt find anything helpful. I only want to select the file and store the file url. Can someone help me? Thanks!
You can't store path to file on client's drive. Even if you get path like this, you can't upload file that is not manually selected by client.
I suggest doing AJAX based client.
How do you distribute other files needed by your application that aren't in a jar file? For example, the application at http://www.javabeginner.com/java-swing/java-swing-shuffle-game . The download contains Shuffle.jar, Shuffle.bat, Score.dat, and an images folder with 3 images in it. I can see possibly putting the images directly in Shuffle.jar, but you wouldn't want to put Score.dat in the jar file because it changes. Is there somewhere you could identify this type of file in the jnlp?
The non-java files should be stored as resources. For files that change, you store the original or template file also as a resource in your jar. When the program starts, you have it check the local system to see if that file exists. If not, it creates the local file by copying the template file from the JAR resource. If the file already exists, then it is used as is.
To save files to the local system, even when running in the sandbox (unsigned), you can use the PersistenceService (javadoc / example). If your java application is signed, then you can use the regular File apis to write the file to the local machine, such as in a ".yourgame" subfolder under the user's home folder.
You can put all those files (except the scores file) in your jar file and load the contents using resource loading.
I've just deleted and restarted my reply twice now, changing my answer each time; this is confusing and needs a bit more clarification.
Are you SURE that application is supposed to be a Web Start app? On the site you linked to, it doesn't appear to be. Are you trying to take an application that was not designed as a Web Start application and change it into one that can be Web Start?
If it's not a Web Start app as your tag implies, then this question is open ended. You can distribute it 100 different ways.
If you are indeed trying to convert it into a Web Start app, you can start by packaging the images into the jar and that will alleviate your first headache if you just read them from there instead of from a File(). If it's going to be Web Start, then you need to decide how you want to keep scores. You have to decide what the scoring system is like before you can decide on how to go about it; will all the scores be kept on the web site hosting the Web Start app? Will that part still be local? If you want to get access to the local file system, you need to sign the jar, then you can extract the score.dat to the file system and do whatever you want with it if the end user accepts.
You need to figure out what you want to do before you can do it, or at least clear it up for us if you already know more than we know you know.