I'm fairly new to Android so my question is how do we create an HttpListener on Android device? My task is to create a listener on one android device and request a contact number from second android device & send the data back n forth. Can any one help me?
E.g:
Android Device 1 (Containing Listener)
Android Device 2 (Client)
Requesting Url to Android Device 1: http://192.122.1.2:8888/GetContactDetail?id=2
Response Received: "111111111111"
Any suggestion on how to implement this scenario?
You can try using i-Jetty to run an a webserver on your first device: http://code.google.com/p/i-jetty/
If you have never created a web application before, you can do the development on a laptop and get your second device working with it. Then deploy the application onto i-jetty when its ready.
In practice this won't work since most networks (mobile and wifi) use NAT. NAT prevents inbound connections to device, which basically means that you can not run servers on mobile devices.
Your approach would only work if both devices are on same local network.
Update
You need to embedd a http server into your app: http://tjws.sourceforge.net/
This is what I did, thanks to #elevine suggestion, I was able to do it successfully but as suggested by #Peter Knego the limitations are still there. This will work on LAN without any problem.
Hope this helps someone.
http://codersapprentice.blogspot.com/2011/09/android-integrate-jetty-server-in-my.html
Related
I am creating a multiplayer android game as a part of my coursework. This is my first game. I intended to allow users to connect to the game over a simple network. I don't want to use internet at all hence I wont be using the android game services. How do I go about this. I have no clue at all. I have tried various tutorials but all of them are using a central game server. I just want to create a simple Client - Server network. One user will host a game and others will join.
it's my first time answering a question here. I usually just read here in stackoverflow. I'm also currently working on my first game. It connects devices using wifi peer-to-peer or WifiDirect (without a wifi hotspot). It requires high version of android OS (4.0 or 4.1?) but I believe you can also try the other way on which the devices needs to connect in the same wifi hotspot for lower OS version requirements. The latter, I haven't tried yet.
After I connect the devices on the same network (peer-to-peer), I use sockets to exchange data between them. I use serializable objects for sending data. I don't know if it's the best way but it works for me.
My game can connect more than two players in wifi peer-to-peer. One device acts as the network owner (and also the game server).
See android's tutorial/documentation for WifiDirect connection :
http://developer.android.com/training/connect-devices-wirelessly/wifi-direct.html
Be sure to read also the adjacent lessons.
Also, Sockets must be used with Threads so you also need to read about it if haven't.
Hope I helped ^^
I finally got the solution and made the Android application. Simply used java socket programming. It works on Hotspot. This works on client - server framework.
Please find the code here and contact me if you require any assistance.
https://github.com/rohitramkumar308/GameOfCards
and this is the link to the app
https://play.google.com/store/apps/details?id=srk.syracuse.gameofcards
Hope this helps you.
I want to send notification from one android device (android tv without bluetooth, telephony) to another android device (phone/tablet). Both are on same wifi network. Through the notification, I want to launch an app or open a page in phone/tablet browser.
I went through GCM messaging and also saw some options where we can have a kind of http server on the phone running but could not understand implementation.
Can someone help with idea and if possible, some piece of code as well.
As I need it for demo, so even any hack solution is fine for me :-)
Thanks for any help or reading.
Your best bet as a hacky solution is to do simple Socket connection between two devices. Since they are on same Wifi, it will be simpler and won't have any firewall restrictions.
Avoid GCM, it requires setting up a GCM Server and then complex registration. It also makes your solution dependent upon Internet connectivity & Google ofcourse.
See an example here:
http://android-er.blogspot.in/2014/02/android-sercerclient-example-client.html
Basically one device such as TV can be a socket listener. The phone/tablet can connect to that socket and then you can initiate a notification on either device based on your requirements and data exchange.
I want to send files between two devices using internet connection with out use any intermediate /server. For example there are two device A and B both have internet connection and both device have installed my application, now need to send a file from Device A to Device B. Device A can know all the detail about the Device B.
Is this possible means guide me in the correct way. Thanks in advance.
You can use a Peer to Peer architecture to achieve this. Basically every phone is a client and a server the same time. See here for a basic implementation.
If the internet is not a prerequisite, you can follow Minav Patel's suggestion and use the Android Bluetooth implementation.
Another solution would be the WiFi-Direct feature (if the phone support it). See here for an example.
You can implement file transfer between two android devices using android bluetooth implementation.Go through following links it will help
android bluetooth implementation basics
http://developer.android.com/reference/android/bluetooth/BluetoothSocket.html
http://developer.android.com/guide/topics/connectivity/bluetooth.html
I am developing an application. In which the idea is like - i want to connect two devices as two mobile or two tabs or mobile to tab or mobile to server or tab to server. Means i want to send data from one device to other device mostly xml.
I want to connect two devices with out internet and blue tooth, I want to connect them with wifi having no internet. And than want to transfer data.
My point is i am having an application which is used to generate a xml and after generation of xml i want to send it to other device or tab or desktop server on a button click.
I searched on Google and found Ad-hoc network, but it is quite difficult to understand me. Is any other way by which i can easily understand Ad-hoc or other way by which i can connect.
So please guide me what should i do, how can I achieve my task. I need your guidance and suggestions.
Socket connection would be a great idea in your situation, you dont need to have Internet to do so. Here is one of many examples if you google it: http://examples.javacodegeeks.com/android/core/socket-core/android-socket-example/
Hope this helps
You can use iJetty. iJetty can be configured to use in your application and when you start wifi router on one android device another can get connected on that device and if it's your client applciation you can configure it to look on a specific port.
Try this : http://puregeekjoy.blogspot.in/2011/06/running-embedded-jetty-in-android-app.html
You could use Wi-Fi Direct if your version of Android is 4.0 or later and your hardware works with it.
I have a small project I am working on and one of the technical problems I am running into is finding a easy way to get one app on one android device to push data to another app on another android device via lan.
I do not want to have to resort to the push API or other similar solutions in case there is no Internet connection.
I was wondering if anyone had any suggestions for this.
Thanks.
You could definitely use Java Sockets. Open a ServerSocket on one device and connect to it using a socket on the other device. You can then send and receive whatever data you want.