Class WiFiDirect

java.lang.Object
com.codename1.io.wifi.WiFiDirect
public final class WiFiDirect extends java.lang.Object

WiFi Direct (Wi-Fi P2P) discovery and grouping.

WiFi Direct lets two devices form a peer-to-peer link without going through an access point. Use it for ad-hoc file transfer, multi-player games on a local network, or any other scenario where a router is unavailable.

Platform support
  • Android: full support via android.net.wifi.p2p.WifiP2pManager. The build pipeline injects CHANGE_WIFI_STATE, ACCESS_WIFI_STATE, ACCESS_NETWORK_STATE, ACCESS_FINE_LOCATION (API 26+) and NEARBY_WIFI_DEVICES (API 33+) when this class is referenced.
  • iOS: not supported. iOS uses MultipeerConnectivity for similar scenarios; that API is intentionally out of scope here.
  • Simulator: stubbed. Discovery returns no peers and connect reports failure.

  • Method Summary

    Modifier and Type
    Method
    Description
    static void
    connect(WiFiDirectPeer peer, WiFiConnectCallback callback)
    Forms a P2P group with peer.
    static void
    disconnect()
    Drops the current group, if any.
    static boolean
    isSupported()
    true if the current platform implements WiFi Direct.
    static void
    startDiscovery(WiFiDirectListener listener)
    Starts peer discovery.
    static void
    stopDiscovery()
    Stops peer discovery and detaches all listeners.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • isSupported

      public static boolean isSupported()
      true if the current platform implements WiFi Direct.

    • startDiscovery

      public static void startDiscovery(WiFiDirectListener listener)
      Starts peer discovery. listener is invoked on the EDT for every peer list change. Call stopDiscovery() to release radio resources when you're done.

    • stopDiscovery

      public static void stopDiscovery()
      Stops peer discovery and detaches all listeners.

    • connect

      public static void connect(WiFiDirectPeer peer, WiFiConnectCallback callback)
      Forms a P2P group with peer. The user is shown a confirmation prompt on both devices the first time they connect; subsequent connections reuse the cached pairing where possible.

    • disconnect

      public static void disconnect()
      Drops the current group, if any.