Provides classes to create peer-to-peer (P2P) connections with Wi-Fi Direct.
Using these APIs, you can discover and connect to other devices when each
device supports Wi-Fi Direct, then communicate over a speedy connection across distances much longer
than a Bluetooth connection. The primary class you need to work with is
WifiP2pManager, which you can acquire by calling
WifiP2pManager includes APIs that allow you to:
- Initialize your application for P2P connections by calling
- Discover nearby devices by calling
- Start a P2P connection by calling
- And more
Several other interfaces and classes are necessary as well, such as:
WifiP2pManager.ActionListenerinterface allows you to receive callbacks when an operation such as discovering peers or connecting to them succeeds or fails.
WifiP2pManager.PeerListListenerinterface allows you to receive information about discovered peers. The callback provides a
WifiP2pDeviceList, from which you can retrieve a
WifiP2pDeviceobject for each device within range and get information such as the device name, address, device type, the WPS configurations the device supports, and more.
WifiP2pManager.GroupInfoListenerinterface allows you to receive information about a P2P group. The callback provides a
WifiP2pGroupobject, which provides group information such as the owner, the network name, and passphrase.
WifiP2pManager.ConnectionInfoListenerinterface allows you to receive information about the current connection. The callback provides a
WifiP2pInfoobject, which has information such as whether a group has been formed and who is the group owner.
In order to use the Wi-Fi P2P APIs, your app must request the following user permissions:
INTERNET(although your app doesn’t technically connect to the Internet, communicating to Wi-Fi Direct peers with standard java sockets requires Internet permission).
For example code, see the Wi-Fi Direct Demo sample application.
Note: Not all Android-powered devices support Wi-Fi
Direct. If your application uses Wi-Fi Direct, declare so with a
element in the manifest file:
<manifest ...> <uses-feature android:name="android.hardware.wifi.direct" /> ... </manifest>
|WifiP2pManager.ActionListener||Interface for callback invocation on an application action|
|WifiP2pManager.ChannelListener||Interface for callback invocation when framework channel is lost|
|WifiP2pManager.ConnectionInfoListener||Interface for callback invocation when connection info is available|
|WifiP2pManager.DnsSdServiceResponseListener||Interface for callback invocation when Bonjour service discovery response is received|
|WifiP2pManager.DnsSdTxtRecordListener||Interface for callback invocation when Bonjour TXT record is available for a service|
|WifiP2pManager.GroupInfoListener||Interface for callback invocation when group info is available|
|WifiP2pManager.PeerListListener||Interface for callback invocation when peer list is available|
|WifiP2pManager.ServiceResponseListener||Interface for callback invocation when service discovery response other than Upnp or Bonjour is received|
|WifiP2pManager.UpnpServiceResponseListener||Interface for callback invocation when upnp service discovery response is received|
|WifiP2pConfig||A class representing a Wi-Fi P2p configuration for setting up a connection|
|WifiP2pDevice||A class representing a Wi-Fi p2p device Note that the operations are not thread safe|
|WifiP2pDeviceList||A class representing a Wi-Fi P2p device list.|
|WifiP2pGroup||A class representing a Wi-Fi P2p group.|
|WifiP2pInfo||A class representing connection information about a Wi-Fi p2p group|
|WifiP2pManager||This class provides the API for managing Wi-Fi peer-to-peer connectivity.|
|WifiP2pManager.Channel||A channel that connects the application to the Wifi p2p framework.|