我想构建一个使用 wifi 直接传输文件的应用程序，并且我正在使用 NFC 来减少配对时间。我已经按照http://developer.android.com/guide/topics/connectivity/wifip2p.html和http://developer.android.com/training/connect-devices-wireless/wifi-direct 中的说明进行操作。 html但我的应用程序无法连接。我从android示例的wifi直接演示中获取了代码。
当我跟踪问题时，当wifi直接广播接收器WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION网络信息不会与其他设备连接时，在我的主类中实现了一个从未触发过ConnectionInfoListener的方法。onConnectionInfoAvailable
谁能帮我？谢谢之前
代码是这样的
Wifi Direct 广播接收器`
public void onReceive(Context arg0, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
// UI update to indicate wifi p2p status.
int state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1);
if (state == WifiP2pManager.WIFI_P2P_STATE_ENABLED) {
// Wifi Direct mode is enabled
activity.setIsWifiP2pEnabled(true);
} else {
activity.setIsWifiP2pEnabled(false);
//activity.resetData();
}
//Log.d(WiFiDirectActivity.TAG, "P2P state changed - " + state);
} else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
// request available peers from the wifi p2p manager. This is an
// asynchronous call and the calling activity is notified with a
// callback on PeerListListener.onPeersAvailable()
if (manager != null) {
}
//Log.d(WiFiDirectActivity.TAG, "P2P peers changed");
} else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
if (manager == null) {
return;
}
NetworkInfo networkInfo = (NetworkInfo) intent
.getParcelableExtra(WifiP2pManager.EXTRA_NETWORK_INFO);
if (networkInfo.isConnected()) {
// we are connected with the other device, request connection
// info to find group owner IP
manager.requestConnectionInfo(channel, activity);
} else {
// It's a disconnect
}
} else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
WifiP2pDevice device = (WifiP2pDevice) intent.getParcelableExtra(WifiP2pManager.EXTRA_WIFI_P2P_DEVICE);
activity.myname = device.deviceName + " " + device.deviceAddress + " " + device.primaryDeviceType + " " + device.secondaryDeviceType + " " + device.status;
}
}`
我的主要课程
`
// how to connect
WifiP2pConfig config = new WifiP2pConfig();
config.deviceAddress = names[1];
config.wps.setup = WpsInfo.PBC;
config.groupOwnerIntent = 15;
connect(config);
public void connect(WifiP2pConfig config) {
manager.connect(channel, config, new ActionListener() {
@Override
public void onSuccess() {
// WiFiDirectBroadcastReceiver will notify us. Ignore for now.
}
@Override
public void onFailure(int reason) {
Toast.makeText(getApplicationContext(), "Connect failed. Retry.", Toast.LENGTH_SHORT).show();
}
});
}
public void disconnect() {
manager.removeGroup(channel, new ActionListener() {
@Override
public void onFailure(int reasonCode) {
//Log.d(TAG, "Disconnect failed. Reason :" + reasonCode);
Toast.makeText(getApplicationContext(), "Disconnect failed. Reason :" + reasonCode, Toast.LENGTH_SHORT).show();
}
@Override
public void onSuccess() {
Toast.makeText(getApplicationContext(), "Disconnected", Toast.LENGTH_SHORT).show();
}
});
}
public void onChannelDisconnected() {
// we will try once more
if (manager != null && !retryChannel) {
Toast.makeText(this, "Channel lost. Trying again", Toast.LENGTH_LONG).show();
//resetData();
retryChannel = true;
manager.initialize(this, getMainLooper(), this);
} else {
Toast.makeText(this,
"Severe! Channel is probably lost premanently. Try Disable/Re-Enable P2P.",
Toast.LENGTH_LONG).show();
}
}
public void onConnectionInfoAvailable(WifiP2pInfo info) {
// TODO Auto-generated method stub
this.info = info;
// After the group negotiation, we can determine the group owner.
if (info.groupFormed && info.isGroupOwner) {
// Do whatever tasks are specific to the group owner.
// One common case is creating a server thread and accepting
// incoming connections.
Toast.makeText(getApplicationContext(), "Owner", Toast.LENGTH_SHORT).show();
} else if (info.groupFormed) {
// The other device acts as the client. In this case,
// you'll want to create a client thread that connects to the group
// owner.
Toast.makeText(getApplicationContext(), "Client", Toast.LENGTH_SHORT).show();
}
}
`
onConnectionInfoAvailable 永远不会被执行，因为 networkInfo.isConnected() 永远不会是真的。
请帮帮我..谢谢..