Wifi-Connect
A simple wrapper module to connect two devices and share data using Wifi-Direct.
This library provides an easy way to access the wifi direct api provided by Android without having to deal with all the boilerplate stuff going on inside.
Sample App
Download the sample app on the Google Play Store and check out all the features
How to integrate the library in your app?
Gradle Dependecy - Javadependencies {
implementation 'com.wifiscanner:wifiscanner:0.1.2'
}Maven Dependecy - Java
<dependency>
<groupId>com.wifiscanner</groupId>
<artifactId>wifiscanner</artifactId>
<version>0.1.2</version>
<type>pom</type>
</dependency>Usage
Step 1:Define the AndroidManifest.xml class:<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
Declare the following service:
<service android:enabled="true" android:name="com.wifiscanner.server.ServerDataService" />
Note: Currently the app does not support runtime permissions.
Step 2: Define the wrapper class in the onCreate() method of the activity
WifiP2PService wifiP2PService = new WifiP2PServiceImpl.Builder()
.setSender(this)
.setWifiP2PConnectionCallback(this)
.build();
wifiP2PService.onCreate();
We need to initialize the wrapper class and declare the activity as either the Sender or the Receiver.
For instance, in order to declare the activity as a Sender class, we use .setSender(this).
In order to declare the activity as a Receiver class, we use .setReceiver(this)
The Receiver - will act as the server. It will fetch the list of available nearby devices and select a device to connect with. The Sender - will act as the client. Once a connection request is made from the server, the sender will accept the connection and pass data to the Receiver
Step 3: Add the following method in the onResume method of the activity
wifiP2PService.onResume();
This method will register the broadcast receiver that will listen for the changes in Wifi network.
Step 4: Add the following method in the onStop method of the activity
wifiP2PService.onStop();
This method will unregister the broadcast receiver since the activity is no longer at the top of the activity.
Step 5: Implement the WifiP2PConnectionCallback interface in your activity
public class MainActivity extends AppCompatActivity implements WifiP2PConnectionCallback {
Functions in the WifiP2PConnectionCallback interface
| Function Name | Usage |
|---|---|
initiateDiscovery() |
This callback method is called when the scan is first initiated |
onDiscoverySuccess() |
This callback method is called the discovery is successful |
onDiscoveryFailure() |
This callback method is called the discovery is not successful |
onPeerAvailable() |
This callback method is called with a list of all peer available devices |
onPeerStatusChanged() |
This status of the peers that are discovered is changing |
onPeerConnectionSuccess() |
called when a connection to a nearby device is successful |
onPeerConnectionFailure() |
called when a connection to a nearby device is not successful |
onPeerDisconnectionSuccess() |
called when a disconnection to a nearby device is successful |
onPeerDisconnectionFailure() |
called when a disconnection to a nearby device is not successful |
onDataTransferring() |
called when data transfer has been initiated |
onDataTransferredSuccess() |
called when data transfer has completed & is successful |
onDataTransferredFailure() |
called when data transfer has completed & is not successful |
onDataReceiving() |
Called when the receiver has started to receive the data from sender |
onDataReceivedSuccess(String message) |
Called when the receiver has received the data successfully |
onDataReceivedFailure() |
Called when the data transferred is completed but data is not received |
Methods available in the Receiver class:
Method to connect to an available device: - you need to pass the device that is to be connected
wifiP2PService.connectDevice(wifiP2pDevice);
Method to start data transfer - you need to pass the message that needs to be shared to the client
wifiP2PService.startDataTransfer("Helllooo");
And that's it folks!
Created and maintained by:
Anitaa Murthy [email protected]
