Class WiFiDirect

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