How to send data through wifi in android programmatically

How to send data through wifi in android programmatically

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By using SSID should get specific wifi enabled device properties by programmatically. With that help, should transfer the data between two Wifi enabled devices in Android.

To send data in a meaningful manner between two Android devices you would use a TCP connection. To do that you need the ip address and the port on which the other device is listening. Examples are taken from here. For the client side you need a socket that connects to the server socket.

how to send data through wifi in android programmatically

Please replace "localhost" with the remote Android devices ip-address or hostname:. For data Transfer between 2 devices over the wifi can be done by using "TCP" protocol.

Connection between Client and Server requires 3 things. For faster transmission of data over wifi can be done by using "WifiDirect" which is a "p2p" connection. Learn more. Data transfer between two Wifi devices Ask Question. Asked 7 years, 8 months ago.

Active 2 years ago. Viewed 16k times. I have searched in Google. In Android 2. Achiever Achiever 1, 9 9 gold badges 24 24 silver badges 52 52 bronze badges.Using these APIs, you can discover and connect to other devices when each device supports Wi-Fi P2P, then communicate over a speedy connection across distances much longer than a Bluetooth connection.

This is useful for applications that share data among users, such as a multiplayer game or a photo sharing application. Methods that allow you to discover, request, and connect to peers are defined in the WifiP2pManager class. Listeners that allow you to be notified of the success or failure of WifiP2pManager method calls.

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When calling WifiP2pManager methods, each method can receive a specific listener passed in as a parameter. Intents that notify you of specific events detected by the Wi-Fi P2P framework, such as a dropped connection or a newly discovered peer. You often use these three main components of the APIs together.

For example, you can provide a WifiP2pManager. ActionListener to a call to discoverPeersso that you can be notified with the ActionListener. The WifiP2pManager class provides methods to allow you to interact with the Wi-Fi hardware on your device to do things like discover and connect to peers. The following actions are available:.

WifiP2pManager methods let you pass in a listener, so that the Wi-Fi P2P framework can notify your activity of the status of a call. The available listener interfaces and the corresponding WifiP2pManager method calls that use the listeners are described in the following table:.

You can register to receive these intents in your application by creating a broadcast receiver that handles these intents:. A broadcast receiver allows you to receive intents broadcast by the Android system, so that your application can respond to events that you are interested in. The basic steps for creating a broadcast receiver to handle Wi-Fi P2P intents are as follows:.

Create a class that extends the BroadcastReceiver class. Channeland the activity that this broadcast receiver will be registered in.

This allows the broadcast receiver to send updates to the activity as well as have access to the Wi-Fi hardware and a communication channel if needed. In the broadcast receiver, check for the intents that you are interested in onReceive.

Carry out any necessary actions depending on the intent that is received. The following code shows you how to create a typical broadcast receiver. The broadcast receiver takes a WifiP2pManager object and an activity as arguments and uses these two classes to appropriately carry out the needed actions when the broadcast receiver receives an intent:.In Androiddevices that support API level 14 or above, can easily create Wi-Fi pair connection or peer-to-peer connections and share the data or files among the devices.

Send data from Android to Android using TCP Sockets Android Studio

This feature is very useful for such applications which have to transfer files among users like photo sharing applications, etc. As compared to Bluetooth, it provides a fast connection between devices with a much higher range of up to m distance. It can transfer data up to the speed of 2. By using WPA2 encryption protection, which is also secured. There are many applications that use a direct Wi-Fi pair connection without using any other networks to transfer files, like Share It, Zapya, Xender, etc.

WifiP2pManager: This is a class which is used to interact with the Wi-Fi hardware on our device which helps in connecting and discovering the peers. Intents When using the Wi-Fi pair connection, we need to listen for broadcast intents and handle the events occurred. Here, we are going to create an example which transfers files by creating a Wi-Fi pair connection in Android. Create this class and extends with BroadcastReceiver. Here, this class notifies important Wi-Fi P2p events.

The events are discussed above. This is our Main Activity. Here, it adds the necessary intent values by creating an intent-filter, registers the broadcast receiver, obtains the instance of WifiP2pManager class, registers the application by using initialize method, also discover peers and connects with the available devices.

Create this fragment class. Add the code here by creating a server socket that accepts the connection and writes the data. This was a simple example of how to transfer files using a Wi-Fi pair connection in Android. In this post we also saw important methods and classes that are used to discover peers and connect with them.

This is one of the most important and popular features in Android development. Keep visiting www. ClassCastException: com. DeviceDetailFragment cannot be cast to com. DeviceListFragment at com. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.

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We are an Athens-Greece based startup company working with products in the IoT space. We need a mobile developer with experience in Ionic 5 framework to provide us both iOS and Android compatible hybrid app.

There are UX designs of the app, UI designs and Acceptance Criteria Business Requirements available, very detailed, so it's very clear and specific the end design goal. Ionic 5 - Angu I have an android project which is Augmented Reality, i have the project but all i want to do to change the code a little bit to be able to add more than one 3D Model in a recycler view inside a bottomSheet in the AR Scene.

I have succefullt made it with one model but i can't figure a good way to do it with more than one. We want an android app which would work as a voice operated email system. We have named it Sightmore. Hello I need Tournament App with Many Games inside and people can earn money from that and i need it with admin panel. Hope will receive best developer at a best price.

I need someone to build a hybrid iOS and Android app for my teleprompter. The teleprompter is already built as a function on my iOS app so I have the code for you to use. I just need it built as a separate app.

Please only message me back if you have an iPhone so I can demonstrate the app to you. It links me to a compressed. I would like to find someone who can help me proof of concept. I would like to see if we can keep current programming but add a remote desktop protocol either as a plug in or other wise. So on start up. Simple user interface walks you thru steps. Connect to local wifi 2. Input ip address 3.

how to send data through wifi in android programmatically

Input user name 4. Input password 5.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

Connect devices wirelessly

Actually I want to send data from a hardware piece to an android device. The hardware device is connected to local wireless router which is connected to modem. Android device will also connected to same router through WI-FI.

Can you please suggest some links or tutorial from where i can get idea how to establish communication between hardware device an the android device to send and receive data through WI-FI. Please Help any sample code or links. Learn more. Asked 6 years, 4 months ago. Active 4 years ago. Viewed 40k times. Neelam Singh Neelam Singh 1 1 gold badge 5 5 silver badges 10 10 bronze badges. Can you elaborate on the hardware device? What is that hardware device.

What are the network interfaces in it? What are the interfaces it is offering? Here actually I'm having a custom hardware which will work as a wireless access point which will allow wireless devices android phone to connect to a wired network using Wi-Fi.

Active Oldest Votes. BufferedInputStream; import java. File; import java. FileInputStream; import java. IOException; import java. OutputStream; import java. Socket; import java. UnknownHostException; import android. Activity; import android. Bundle; import android.Besides enabling communication with the cloud, Android's wireless APIs also enable communication with other devices on the same local network, and even devices which are not on a network, but are physically nearby.

The addition of Network Service Discovery NSD takes this further by allowing an application to seek out a nearby device running services with which it can communicate. Integrating this functionality into your application helps you provide a wide range of features, such as playing games with users in the same room, pulling images from a networked NSD-enabled webcam, or remotely logging into other machines on the same network.

This class describes the key APIs for finding and connecting to other devices from your application. This class also shows you how to use NSD and Wi-Fi P2P in combination to detect the services offered by a device and connect to the device when neither device is connected to a network.

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How to Transfer Files Using Wi-Fi Pair Connection in Android

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I have tried with Samples But I didn't get anything. Wi-Fi peer-to-peer P2P allows Android 4. Using these APIs, you can discover and connect to other devices when each device supports Wi-Fi P2P, then communicate over a speedy connection across distances much longer than a Bluetooth connection. This is useful for applications that share data among users, such as a multiplayer game or a photo sharing application.

TCP is a great transport for file transfers, I don't think you'll ever come up with a reason to not use TCP to begin with. There is also no fancy built-in file-transfer protocol that all Andriod devices can handle, so you'll still need to develop a client. Besides, robust and reliable discover is not entirely possible either without the devices having custom clients for your purposes installed. Each client would either need to actively disclose itself, or passively reply to requests.

Responding clients can thus be discovered bit by bit, and even share their scan results. Active : a reverse approach would be to have each enabled client send out multicast datagrams and listen to them similar to how ARP discovery works.

Bonus points for authentication and authorization. The enabled client approach a device with a clientmeans that you can potentially develop cross-platform clients and have them talk to one another using your own discover and data transfer protocols. For that, you have to make connection. Using Wi-Fi, you can't directly communicate to client, means one to one communication As Bluetooth. For that, you have to connect sender in this case your mobile device and receiver other mobile device or anything to one router or hub.

And from that you can communicate with receiver. You can't find out from your app which are the other devices connected to the same wifi network without the other devices broadcasting that information somehow.

Some routers have that functionality embedded in them via an exposed API I think but you would then need to implement this on a per-router basis. Alternatively, you could use some kind of framework to handle this for you on the phone level. Take a look at the Wi-Fi peer-to-peer documentation.

Finally, you could implement it yourself. It shouldn't be hard. Whenever a device connects to a wifi network, you could send the SSID of the network using android. Then your app could query the server for other devices connected to the same SSID and allow for communication between them. First store ip address of different computer in an array. You can use thread for sending data to multiple users by sleeping the thread one by one after sending ,it will help u to do the same.

Learn more. How send data through WiFi?

how to send data through wifi in android programmatically

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