I need a fast way to upload files to a ftp server.The files will be used for a primitive chat.Something like a timer and every 5 sec checks to see if the file x was added,if it was added open it and show it.
So please tell me an easy way to upload a file,because from google,I got only hundreds of lines of code.And yes,I need it for a FTP server.
Also it would be awesome to tell me a way to acces a file trough ftp open it and show it.(don't really need to download).
You should use the org.apache.commons.net.ftp.FTPClient library - it's free and implements fairly easily with Android. You can find a pretty easy how-to at the bottom of this blog post:
http://hoang17.com/posts/android/android-how-to-upload-a-file-via-ftp
That article should be especially helpful as it shows you how to store a string as data in a specific filename.
To be honest though - FTP seems like the absolute worst way to create any form of chat communication. :)
Cheers.
Related
I need to make app to upload and download files
when user upload for example "file.mp4" if this size more then 1MB i will Split it or Chunked it to Simmler files in like [500kb , 500kb] and upload first 500kb in server and secound 500kb to scound server then when will download this files again i need to integrate [500kb + 500kb] = 1MB
and show file 1MB like first time
It seems as though you've already stated a method to approach your particular problem. Here is a link to another question that is somewhat related. Learning the buffer process and how to implement it would be a start.
Hope that's useful.
I want to upload all files of a folder to my PHP page.
That is, If I have several images inside a folder, and I want to upload (HTTP POST) all pictures in the folder to my PHP page, which then gets saved in my web directory by their respective file names.
How can I do that? I know about AsyncTask, but I am beginner in Android programming.
I don't know how to make array or list or loops.
AsyncTask is way too older, I am not saying we should not implement but has to take care of a lot of things if implemented!
Rather go with implementing RxJava based implementation but again since you are new to the android programming, so I would not suggest!
Since you are new to the android programming so we can say it's a long problem to solve. I would suggest you go steps wise steps. Let me give you pointers you would be searching, exploring and building around:
Find the directory in folders and iterate through each files to prepare a list
Two popular ways of uploading images: 1) Convert into Base64 and upload one by one 2) Multipart image upload
Instead of AsyncTask, you may use Retrofit Multipart image upload
I am new to this. I have the Android SDK installed with Eclipse. I can work with basic activities and layouts.
I am looking to write this Android application that will;
1) Allow users to sign-in using a pre-allocated password.
2) Login and change the password.
3) Every time the user opens the app, he downloads a CSV file from a server to the SD card.
4) The app parses from the file and displays them on several activities and small frames inside the app.
Think of it as an informational application. But, I'd like to add some intelligence on top of it after I get this done.
I have read many articles and topics but none of them give me a specific approach to do this faster. I have very little time for development.
If there's a similar application that you're familiar with, I'd like to take a look at the code.
I want to know exactly (the code) on how the communication between the app and a linux based server on the web needs to be established. Right now, there's only a CSV file (or an EXCEL file - which one's better to parse? How to decide?) there.
Also, when the CSV file is up to date, I wouldn't want it to download the file again. How to prevent it?
As I said, I am new - so please be patient.
Thanks
If you are new to this and want to develop something fast, why do it the hardest way, in java? There are so many easy toolkits out there, e.g. RFO.Basic, you will be amazed how much you can achieve, fast, that way.
(You asked several questions) Easiest to parse? If you don't have Excel installed on your Android device, the CSV is of course easier to parse, needing only text tools. However, if you have a choice of formats, why not use XML? If you have never worked with XML, there is a little learning curve, but there are lots of tutorials on the web. After that, you'll never want to go back to CSV.
Your last question: how to prevent download of unchanged file? Is this about a big file? In that case start with quickly downloading the hash (checksum) of the file, so that the client can decide if the file has changed.
I am building an Android app for a client and most of the data that i need is contained in an online .txt file attached to my clients website. I've never used an online .txt file as a data source before and don't really know where to begin?! Can anyone point me in the direction of a good tutorial on the subject.
Many Thanks in advance
P.S. I haven't asked whether it's possible because i have assumed it is due to the fact you can use an internal .txt file as a data source
I think the best approach is to download the file on the device and then read it like a normal file. If the file changes on a period of time, then configure the app to download and read the file and then update the local info in the app.
I don't think you can use an online txt as a DataSource, but you can implement this so you have an abstract source for your file, and then just call read on it.
Expose the txt/xml file over web,if you want to get it down to phone use URL loader and load it to the phone and operate if you want to use it online (like others may also be using it) it will be a bit complex in order to deal with data coming from more then one source but possible. clear you question a bit more.
I am trying to download a file from server, what I have in mind to get filename in json response and the content and write same in assets or on sdcard. should i go and implement same, or there can be some other way we can achieve the same.
Actually you know you control the way you expose the content from the server - you can just make the file itself (its bytes) exposed at certain url. If you need to keep the name of the file posting as json seems to be good solution.
However, there is one trick here: I don't know how big the file you refer to is and also how reliable the network will be. For every bigger file I will recommend to implement resumable upload via byte serving. You can read about the byte serving client consumer in Android in this thread. Then just go and see on how to implement byte serving server side - it definitely depends on the platform in the only case in which I used such mechanism I actually had to mimic the byte-serving with my custom url parameter. If you need further help on server side write back and I will extend my answer.