在 onResume() 中注册一个 BroadcastReceiver 并覆盖它。记得在 onPause() 中取消注册
private class WiFiDirectBroadcastReceiver extends android.content.BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
//TODO
} else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
//TODO
} else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
//TODO
} else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
//TODO
}
}
}
然后尝试先调用discoverPeers()
mWifiP2pManager.discoverPeers(Channel mChannel, ActionListener mActionListener);
如果 discoverPeers() 确实找到了对等点,则会触发动作 WIFI_P2P_PEERS_CHANGED_ACTION。
我们可以在 BroadcastReceiver 的 WIFI_P2P_PEERS_CHANGED_ACTION 中调用 requestPeers()
mWifiP2pManager.requestPeers(Channel mChannel, WifiP2pManager.PeerListListener);
所以我们的 BroadcastReceiver 现在看起来像这样
private class WiFiDirectBroadcastReceiver extends android.content.BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
//TODO
} else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
mWifiP2pManager.requestPeers(mChannel , pl);
} else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
//TODO
} else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
//TODO
}
}
}
要实现WifiP2pManager.PeerListListener,您需要覆盖 onPeersAvailable(WifiP2pDeviceList peers)
在 onPeersAvailable() 中,参数 wifiP2pDeviceList 表示你发现的对等点
我们需要一个 UI 对象来让我们选择要连接的设备,所以我在这里使用 spinner。
您也可以使用 listView 或其他东西。
private List<WifiP2pDevice> mPeers = new ArrayList<WifiP2pDevice>();
spinnerAdapter = new WiFiPeerListAdapter(this, R.layout.row_devices, mPeers);
...
@Override
public void onPeersAvailable(WifiP2pDeviceList wifiP2pDeviceList) {
mPeers.clear();
mPeers.addAll(wifiP2pDeviceList.getDeviceList());
spinnerAdapter.notifyDataSetChanged();
}
最后我们可以连接到设备
WifiP2pDevice device = spinnerAdapter.getItem((int) mSpinner.getSelectedItemId());
WifiP2pConfig config = new WifiP2pConfig();
config.deviceAddress = device.deviceAddress;
config.wps.setup = WpsInfo.PBC;
mWifiP2pManager.connect(mChannel, config, mActionListener);
两个设备连接后,将触发 BroadcastReceiver 动作 WIFI_P2P_CONNECTION_CHANGED_ACTION。所以我们可以在这里做点什么。
我们的 BroadcastReceiver 现在看起来像
private class WiFiDirectBroadcastReceiver extends android.content.BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
//TODO
} else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
mWifiP2pManager.requestPeers(mChannel , pl);
} else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
NetworkInfo networkInfo = intent.getParcelableExtra(WifiP2pManager.EXTRA_NETWORK_INFO);
if (networkInfo != null) {
Log.d(TAG,networkInfo.toString());
if (networkInfo.isConnected()) {
mWifiP2pManager.requestConnectionInfo(mChannel, WifiP2pManager.ConnectionInfoListener);
}
}
} else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
//TODO
}
}
}
顺便说一句,登录操作 WIFI_P2P_CONNECTION_CHANGED_ACTION 会得到这样的结果
NetworkInfo: type: WIFI_P2P[], state: UNKNOWN/IDLE, reason: (unspecified), extra: (none), roaming: false, failover: false, isAvailable: true, simId: 0
现在我们需要实现WifiP2pManager.ConnectionInfoListener并为 requestConnectionInfo() 重写其抽象方法 onConnectionInfoAvailable(WifiP2pInfo info)
private WifiP2pInfo p2pInfo;
@Override
public void onConnectionInfoAvailable(final WifiP2pInfo info) {
p2pInfo = info;
mWifiP2pManager.requestGroupInfo(mChannel, WifiP2pManager.GroupInfoListener);
}
我们再次需要实现 WifiP2pManager.GroupInfoListener 并覆盖 onGroupInfoAvailable(WifiP2pGroup group)
@Override
public void onGroupInfoAvailable(WifiP2pGroup wifiP2pGroup) {
String log;
if(wifiP2pGroup.isGroupOwner()) {
log = "I am GO";
}else{
log = "I am not GO";
}
Log.d(TAG, log);
}
现在我们几乎得到了关于这两款设备的所有信息
好好享受