要解决Android WiFi直接请求Peers不会找到附近的对等设备的问题,您可以尝试以下解决方法。
确保设备支持WiFi直接功能。要使用WiFi直接功能,设备必须具有支持WiFi Direct的硬件。
确保WiFi直接功能已启用。在应用程序中,您可以使用以下代码检查WiFi直接功能是否已启用:
WifiP2pManager wifiP2pManager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
if (wifiP2pManager != null) {
wifiP2pManager.setWifiP2pEnabled(true);
}
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION);
WifiP2pManager wifiP2pManager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
if (wifiP2pManager != null) {
WifiP2pManager.Channel channel = wifiP2pManager.initialize(this, getMainLooper(), null);
BroadcastReceiver wifiDirectReceiver = new WifiDirectBroadcastReceiver(wifiP2pManager, channel, this);
registerReceiver(wifiDirectReceiver, intentFilter);
}
public class WifiDirectBroadcastReceiver extends BroadcastReceiver {
private WifiP2pManager wifiP2pManager;
private WifiP2pManager.Channel channel;
private MainActivity activity;
public WifiDirectBroadcastReceiver(WifiP2pManager manager, WifiP2pManager.Channel channel, MainActivity activity) {
super();
this.wifiP2pManager = manager;
this.channel = channel;
this.activity = activity;
}
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
// 处理WiFi P2P状态更改的事件
int state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1);
if (state == WifiP2pManager.WIFI_P2P_STATE_ENABLED) {
// WiFi直接功能已启用
} else {
// WiFi直接功能已禁用
}
} else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
// 处理可用的对等设备更改的事件
if (wifiP2pManager != null) {
wifiP2pManager.requestPeers(channel, activity.peerListListener);
}
} else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
// 处理连接状态更改的事件
} else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
// 处理此设备的信息更改的事件
}
}
}
WifiP2pManager.PeerListListener peerListListener = new WifiP2pManager.PeerListListener() {
@Override
public void onPeersAvailable(WifiP2pDeviceList peers) {
// 处理可用对等设备的列表
List deviceList = new ArrayList<>(peers.getDeviceList());
if (deviceList.isEmpty()) {
// 没有找到附近的对等设备
} else {
// 找到了附近的对