Android :: Best Approach To Send Data From Server To Android Device
Jan 16, 2010
I am developing an Android app that needs to communicate bi-directionally with a server. By that, I mean either the server or the device can send a message at any time, with an arbitrary amount of time in between messages. Sending data from the device to the server is a common and I think well understood task, but I'm not as sure what the best approach is to go in the opposite direction from the server to the device.
I think having the device periodically poll the server may be a bad idea due to latency and the drain on the battery, but I'd be willing to consider this option. My plan at the moment is to send text messages from the server via an email-to-SMS bridge, and to have my app run a service to receive and handle these messages.
The question I have is if there are any best practices for this scenario, and if using text messages has some downsides that I have failed to consider. For the sake of this question, I want to assume that users have an unlimited text data plan, so paying per text won't be an issue.
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Aug 11, 2010
In my application, I need to record some file. I want to send audio data to server while recording. Do you know how to do that? After user stop saying, I need to detect the end of speaking. Is there any algorithm to do that? I want my application similar as google voice search,
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Sep 21, 2010
My application needs to record audio and send audio data to server while recording. If User stops audio input, we will stop sending. How could I implement such feature in Android?
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Apr 6, 2010
i am new to android. I want to connect with server. Like i want to sent data and receive data from server through Http Connection. Can anyone help me how to do this. Can anyone provide me the sample of both side-client as well as server side.
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Nov 2, 2010
i am trying to get an android app to send tcp data to a server on my network. The server was written in c#. When i use the code below to transmit data, the server only receives a whole series of.
Socket socket = new Socket(host, port);
PrintWriter pw = new PrintWriter(socket.getOutputStream(), true);
pw.print("test");
socket.close();
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Aug 16, 2010
I want to save the data on the web server. I have data in XML format and I know the URL String. Please tell me how can I send the request and handle the response.
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Feb 16, 2010
I would like to continuously send/stream sensor data (GPS, acceleration, etc.) from a device to a server. What would be the best technology to do this? Is it possible to use RTSP? What else would you recommend me to use?
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Feb 18, 2010
My app needs to send some data to a server when the device is connected. I have been reading about native Android Broadcast actions. I was willing to find a way to use one as gmail does when the device connects to the Internet. (The "loading" icon on the top while it syncs mails) Is it ACTION_SYNC what I am looking for? If not, how does gmail knows when the device connects to internet?
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Nov 3, 2010
In the past I have used Python for backend stuff along with Django for frontend stuff, but I don't know how well those two work with Android. Can anyone recommend a good way to go about making server-side software that works well with Android? Please take into account that I also want a web application as a frontend, so the backend should work with both the web app and the Android app.
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Mar 11, 2012
I am trying to send the Acelerometer and GPS data to the server every 5 minutes.
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Mar 29, 2010
I am currently trying to send some data from and Android application to a php server (both are controlled by me). There is alot of data collected on a form in the app, this is written to the database. This all works.
In my main code, firstly I create a JSONObject (I have cut it down here for this example):
JSONObject j = new JSONObject();
j.put("engineer", "me");
j.put("date", "today");
j.put("fuel", "full");
j.put("car", "mine");
j.put("distance", "miles");
Next I pass the object over for sending, and receive the response:
String url = "http://www.server.com/thisfile.php";................
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Jul 7, 2010
I'm trying to send a simple string (an access token I receive in the same program from another server) from my android emulator to my tomcat server running locally. Any ideas on where I should be looking?
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Dec 19, 2012
I'm going to make an application for meteor viewers and the goal is, to send soma data from android device to PC through the wifi without router. So on PC will be made a Hotspot and one or more devices can connect to it.Is there any application and/or server on PC or both to make this communication? Or what's the way how to do that? What's protocol of communication?
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May 6, 2010
My wish is to know how I can program a mobile website, that fit to all mobile phones.
Are there any special approaches to recognize a device and render the code according to it?
Which tools and coding languages are required?
My first thought was to hold the website in XML, which would be parsed depending on the device.
You have to consider old phones, even devices with only wap support.
For example: The mobile website has to recognize Nokia N75 and render/send the code that looks optimal for this device. Same thing with an iPhone or a Motorola Razr.
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Jul 1, 2010
I'm exploring to scan ssid and rssi from android and I'm able to do it, but now i have want send the data to the server, so i explore i found below code
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://101.34.45.45/rawData");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);.....................
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Sep 28, 2010
I have an app in which there are several requests to a server in internet (http), for example to retrieve images in threads outside the main UI process. The thing is that I have a Thread that manage the request with a while(!end) loop and in the end a Thread.sleep(500) that checks if there are new unhandled requests. As I read here [1] I know that this is not a good practice. And users have complain about ANR (app not responding) in several cases.
Knowing that obviously I want to refactor all the way my app manage the requests and I want to do that the best way. So, the question is; what is the best approach for doing this? A service? a broadcast receiver and send intents when I need a request to be handled?
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Oct 19, 2010
today i meet the problem.i need technic can control the android machine from server.then i want send data from server to android with no request from android.
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Jul 13, 2010
We are supposed to cache textual and audio data in our application until device is booted or maximum of two days, whichever happens earlier. To get a perspective on data to be cached, note that we are to store about 200 text headers containing around 10 fields, each of length 30 bytes and about 20 sound files each about a minute long.We are getting the textual data by parsing XMLs and then we keep them in ArrayLists. The sound files are directly written inside the app storage using File I/O (and not on SDcard or Apps Cache directory).This application is to be run on devices running Android 1.5 or later.I understand, and please correct me if I am wrong, that we can cache the files either on SDcard or inside the application or inside applications Cache directory.
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Mar 15, 2010
I am building an application for Android (1.5) that, after quering a webservice, shows to the user a big amount of data that should be displayed in a "grid" or "table" style.
I must show a result of about 7 columns and 50 rows (for example a customer list with names, addresses, telephone number, sales amount last year and so).
Obviously, the 7 columns will not fix in the screen and I would like the user would be able to scroll up/down and LEFT/RIGHT (important because of the number of columns) to explore the grid results.
cell selection level is NOT necessary, as much I would need row selection level.
What is the best approach to get this interface element? Listview / GridView / TableLayout?
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Aug 30, 2010
I am trying to send a string to server, i would like to know how many alternatives i have. Actually i am using a socket but i don't know if there is a better option. The string is big(lenght about 192000 , yes too much 192000), i think is a little is stupid try to do this, but the server works with sending a string to one computer to other computer and my mision is to make a conection between a computer like server with a client (android phone). If i can send i big string so i do not need to change the program on the server. I need info about how to send a string with 1. GPRS EDGE 2. Wi-FI
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Feb 3, 2009
I want to send the some xml data to server. Here I am showing you the example I tried: try { String s = "<?xml version="1.0" encoding="UTF-8"?>
" +"<name>Manoj</name>
" +"<number>123</number>
" +"<school>dmh</school>
"; String url = "http://localhost:9090/loggerapi.php?data="+s; HttpClient httpclient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(URI.create(url)); httpPost.setHeader("Content-type","text/xml; charset=ISO-8859-1"); ResponseHandler<String> responseHandler = new BasicResponseHandler(); String responseBody = httpclient.execute(httpPost, responseHandler);
}
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Nov 18, 2010
I am developing a GPS application.. By using the windowsXP OS and eclips IDE. I am able to get the Longitude and Latitude of the current Position I want to sent those details to server by using the Http connection and for that sending, I will use gprs connection in my device how to do this, I am in big confusion. Here one more thing that GPRS connection is not available at that time we need to sent a SMS to the server.
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Sep 2, 2009
How to send the Url to the server using Http Get method...Here i m trying to insert a name into the databse .If i execute the below showing code there it tells "Connection to http:localhost refused " I think the error is is in the Http method..how to Correct it....
CODE:...............................
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Nov 4, 2010
I made a simple Android application which gives the latitude and longitude of the place where I am via GPS and I want to send the coordinates to a Webpage and represent them on google maps. Which is the simpliest possibility to send the data to the server?
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Jul 28, 2010
I wanna develop an app that uses CSD or Data channel of GSM Service to send data. Can anyone help me out with it?
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Mar 20, 2010
I am planning to design and write an application which displays all possible restaurants/malls etc around the mobile device.For this, do I send the GPS info to the server and let server do the processing and return the list of all possible restaurants/malls or let the mobile device itself process, find and list that. Please advise. I don't want the mobile device to get any slower.
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Oct 1, 2012
I'm looking to run a VPN server on my Android device so that I can set up a virtual network adapter on my PC to connect to the same network as my Android's wifi. I've seen plenty of Android VPN clients, but no server software.
Is there any software out there to run a VPN server on an android device?
I've heard OpenSSH runs an L2/L3 VPN, but I everything I can find on getting OpenSSH running on Android is all about ftp, and they usually wind up running an alternative. Is there a release of OpenSSH I can use on android for the purpose stated?
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Mar 20, 2009
We are workin on a project, in which we need to provide the facility of chatting betwn users, for that i need to poll the server countiniously to recieve/send the chat msgs.Does anybody know how to do it.
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Jun 30, 2010
Programmability i want monitor IP ever connected to my Adnroid device. My initial thought is i can write a background service which will run tcpdump command and forward its output to inputStream. By putting any regular expression i can retrieve list of connected IP to my device.I think that would be bulky to continually run command like tcpdump.
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Nov 21, 2010
I read a lot about handling rotation in android applications, but I still have so many questions and need to much to understand. Let me explain my problem or implementation, that I'm using now in my application. If an activity will be opened, a get request will be sent to server. This request will be executed in a Thread (new Thread(...)) and if request was completed, activity's ui will be refreshed. But what should I do, if the user rotate his device?
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