我有两个设备:HTC One X(Android 4.2.2)和Samsung Note N8000(Android 4.1.2)
我需要使用Wifi P2P连接它们 .
我从Creating P2P Connections with Wi-Fi举了一个例子,创建了广播接收器和Wifi P2P初始化 .
private class WifiP2PBroadcastReceiver extends BroadcastReceiver {
public WifiP2PBroadcastReceiver() {
register();
}
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
if (action.equals(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION)) {
int state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1);
logger.fine("WifiP2PBroadcastReceiver: WIFI_P2P_CONNECTION_CHANGED_ACTION " + ((state == WifiP2pManager.WIFI_P2P_STATE_ENABLED) ? "enabled" : "disabled"));
}
else if (action.equals(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION)) {
peersUpdated();
}
}
public void register() {
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION);
context.registerReceiver(this, intentFilter);
}
public void unregister() {
context.unregisterReceiver(this);
}
}
Wifi P2P初始化:
private void initWifiP2p() {
// initialization
wifiP2pManager = (WifiP2pManager) context.getSystemService(Context.WIFI_P2P_SERVICE);
channel = wifiP2pManager.initialize(context, context.getMainLooper(), new WifiP2pManager.ChannelListener() {
@Override
public void onChannelDisconnected() {
logger.fine("onChannelDisconnected");
}
});
// peer disccovery
wifiP2pManager.discoverPeers(channel, new WifiP2pManager.ActionListener() {
@Override
public void onSuccess() {
peersUpdated();
}
@Override
public void onFailure(int reason) {
}
});
}
// method called when discoverPeers listener's onSuccess is called
private void peersUpdated() {
logger.fine("peersUpdated");
wifiP2pManager.requestPeers(channel, new WifiP2pManager.PeerListListener() {
@Override
public void onPeersAvailable(WifiP2pDeviceList peers) {
// print all peers
for (WifiP2pDevice device : peers.getDeviceList()) {
logger.fine("peersUpdated: " + device.deviceName + " " + device.primaryDeviceType + " " + device.deviceAddress);
}
}
});
}
在两个设备上:如果Wifi AP断开连接 - 没有任何反应,则不会启动Wifi连接 . 广播接收器onReceive with action WIFI_P2P_CONNECTION_CHANGED_ACTION未被调用 . 我需要做些什么来 Build Wifi P2P连接?
如果设备连接到Wifi AP,则会调用WIFI_P2P_PEERS_CHANGED_ACTION,但不会找到对等设备 .
2 回答
我发现我的两个设备都运行了两个运行KitKat的nexus 4,需要调用discoverPeers . 首先要“发现”彼此 .
然后我必须在你的BroadCastReceive类的onReceive中挂钩这条消息:
然后打电话
然后,这将触发onPeerAvailable,其中您已经在其中设置了PeerListListener .
一旦你的设备'know'彼此相关,那么
(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action))
事件似乎就会发生 . 我也在那里打电话给requestPeers .我只是处于开发的早期阶段,并且要求同伴的呼叫是两个地方似乎不对,但此刻我正在使用它 . 祝好运
您是否添加了以下 Permission in Manifest 文件