我有一个wifidirect应用程序成功发现并连接到同行，我已经附加了＃34;该应用程序到我正在开发的另一个应用程序。该应用程序应该通过Wifidirect同时控制一个带有蓝牙和通信的机器人，它有一个＆＃34;播放按钮＆＃34;当它被点击时，它转到另一个活动，该活动有两个片段，一个是第一个出现在＆＃34;玩＆＃34;单击按钮并强制用户连接到同伴（这是我附加了wifidirect应用程序），连接后转到第二个片段，这个片段有游戏界面，它有所有的蓝牙部分（连接和控制机器人） ）。
总结：第一个活动有一个播放按钮，单击按钮，它会转到带有两个片段的第二个活动。第二个活动，必须连接到Wifidirect的对等体，之后它必须用蓝牙连接和控制机器人。
在第二项活动中同时发生了WifiDirect和蓝牙通信（令人困惑......我知道）
我的问题：如果我只使用Wifidirect应用程序，它会成功搜索和连接，但需要使用＆＃34; fusion＆＃34;这两个应用程序，它只是永远搜索而没有发现任何东西。任何想法发生什么？也许是为了在同一活动中发生的许多事情或许多事情？如果我感到困惑，请告诉我。
我的Wifidiscovery活动：
public class WiFiServiceDiscoveryActivity extends Activity implements
DeviceClickListener, Handler.Callback, MessageTarget,
ConnectionInfoListener {
public static final String TAG = "wifidirectdemo";
// TXT RECORD properties
public static final String TXTRECORD_PROP_AVAILABLE = "available";
public static final String SERVICE_INSTANCE = "_wifidemotest";
public static final String SERVICE_REG_TYPE = "_presence._tcp";
public static final int MESSAGE_READ = 0x400 + 1;
public static final int MY_HANDLE = 0x400 + 2;
private WifiP2pManager manager;
static final int SERVER_PORT = 4545;
private final IntentFilter intentFilter = new IntentFilter();
private Channel channel;
private BroadcastReceiver receiver = null;
private WifiP2pDnsSdServiceRequest serviceRequest;
private Handler handler = new Handler(this);
private jogar chatFragment;
private WiFiDirectServicesList servicesList;
private TextView statusTxtView;
Button botaorecomecar;
public Handler getHandler() {
return handler;
}
public void setHandler(Handler handler) {
this.handler = handler;
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
statusTxtView = (TextView) findViewById(R.id.status_text);
botaorecomecar = (Button) findViewById(R.id.botaorecomecar);
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);
manager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
channel = manager.initialize(this, getMainLooper(), null);
startRegistrationAndDiscovery();
servicesList = new WiFiDirectServicesList();
getFragmentManager().beginTransaction()
.add(R.id.container_root, servicesList, "services").commit();
botaorecomecar.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = getIntent();
finish();
startActivity(intent);
}
});}
@Override
protected void onRestart() {
Fragment frag = getFragmentManager().findFragmentByTag("services");
if (frag != null) {
getFragmentManager().beginTransaction().remove(frag).commit();
}
super.onRestart();
}
@Override
protected void onStop() {
if (manager != null && channel != null) {
manager.removeGroup(channel, new ActionListener() {
@Override
public void onFailure(int reasonCode) {
Log.d(TAG, "Disconecção falhada. Razão: :" + reasonCode);
}
@Override
public void onSuccess() {
}
});
}
super.onStop();
}
/**
* Registers a local service and then initiates a service discovery
*/
private void startRegistrationAndDiscovery() {
Map<String, String> record = new HashMap<String, String>();
record.put(TXTRECORD_PROP_AVAILABLE, "visivel");
WifiP2pDnsSdServiceInfo service = WifiP2pDnsSdServiceInfo.newInstance(
SERVICE_INSTANCE, SERVICE_REG_TYPE, record);
manager.addLocalService(channel, service, new ActionListener() {
@Override
public void onSuccess() {
appendStatus("Serviço local adicionado");
}
@Override
public void onFailure(int error) {
appendStatus("Falha ao adicionar serviço");
}
});
discoverService();
}
private void discoverService() {
/*
* Register listeners for DNS-SD services. These are callbacks invoked
* by the system when a service is actually discovered.
*/
manager.setDnsSdResponseListeners(channel,
new DnsSdServiceResponseListener() {
@Override
public void onDnsSdServiceAvailable(String instanceName,
String registrationType, WifiP2pDevice srcDevice) {
// A service has been discovered. Is this our app?
if (instanceName.equalsIgnoreCase(SERVICE_INSTANCE)) {
// update the UI and add the item the discovered
// device.
WiFiDirectServicesList fragment = (WiFiDirectServicesList) getFragmentManager()
.findFragmentByTag("serviços");
if (fragment != null) {
WiFiDevicesAdapter adapter = ((WiFiDevicesAdapter) fragment
.getListAdapter());
WiFiP2pService service = new WiFiP2pService();
service.device = srcDevice;
service.instanceName = instanceName;
service.serviceRegistrationType = registrationType;
adapter.add(service);
adapter.notifyDataSetChanged();
Log.d(TAG, "onBonjourServiceAvailable "
+ instanceName);
}
}
}
}, new DnsSdTxtRecordListener() {
/**
* A new TXT record is available. Pick up the advertised
* buddy name.
*/
@Override
public void onDnsSdTxtRecordAvailable(
String fullDomainName, Map<String, String> record,
WifiP2pDevice device) {
Log.d(TAG,
device.deviceName + " é "
+ record.get(TXTRECORD_PROP_AVAILABLE));
}
});
// After attaching listeners, create a service request and initiate
// discovery.
serviceRequest = WifiP2pDnsSdServiceRequest.newInstance();
manager.addServiceRequest(channel, serviceRequest,
new ActionListener() {
@Override
public void onSuccess() {
appendStatus("Adicionado pedido de descoberta de serviços");
}
@Override
public void onFailure(int arg0) {
appendStatus("Falha ao adicionar pedido de descoberta de serviços");
}
});
manager.discoverServices(channel, new ActionListener() {
@Override
public void onSuccess() {
appendStatus("Descoberta de serviços iniciada");
}
@Override
public void onFailure(int arg0) {
appendStatus("Descoberta de serviços falhada");
}
});
}
@Override
public void connectP2p(WiFiP2pService service) {
WifiP2pConfig config = new WifiP2pConfig();
config.deviceAddress = service.device.deviceAddress;
config.wps.setup = WpsInfo.PBC;
if (serviceRequest != null)
manager.removeServiceRequest(channel, serviceRequest,
new ActionListener() {
@Override
public void onSuccess() {
}
@Override
public void onFailure(int arg0) {
}
});
manager.connect(channel, config, new ActionListener() {
@Override
public void onSuccess() {
appendStatus("A conectar a um serviço");
}
@Override
public void onFailure(int errorCode) {
appendStatus("Falha ao conectar a serviço");
}
});
}
@Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_READ:
byte[] readBuf = (byte[]) msg.obj;
// construct a string from the valid bytes in the buffer
String readMessage = new String(readBuf, 0, msg.arg1);
Log.d(TAG, readMessage);
(chatFragment).pushMessage(readMessage);
break;
case MY_HANDLE:
Object obj = msg.obj;
(chatFragment).setChatManager((ChatManager) obj);
}
return true;
}
@Override
public void onResume() {
super.onResume();
receiver = new WiFiDirectBroadcastReceiver(manager, channel, this);
registerReceiver(receiver, intentFilter);
}
@Override
public void onPause() {
super.onPause();
unregisterReceiver(receiver);
}
@Override
public void onConnectionInfoAvailable(WifiP2pInfo p2pInfo) {
Thread handler = null;
/*
* The group owner accepts connections using a server socket and then spawns a
* client socket for every client. This is handled by {@code
* GroupOwnerSocketHandler}
*/
if (p2pInfo.isGroupOwner) {
Log.d(TAG, "Conectado como GroupOwner");
try {
handler = new GroupOwnerSocketHandler(
((MessageTarget) this).getHandler());
handler.start();
} catch (IOException e) {
Log.d(TAG,
"Falha ao criar uma thread de servidor - " + e.getMessage());
return;
}
} else {
Log.d(TAG, "Conectado como peer");
handler = new ClientSocketHandler(
((MessageTarget) this).getHandler(),
p2pInfo.groupOwnerAddress);
handler.start();
}
chatFragment = new jogar();
getFragmentManager().beginTransaction()
.replace(R.id.container_root, chatFragment).commit();
statusTxtView.setVisibility(View.GONE);
}
public void appendStatus(String status) {
String current = statusTxtView.getText().toString();
statusTxtView.setText(current + "\n" + status);
}
}
答案 0 :(得分：0)
您的代码看起来正确，应该按预期工作。但是，我看到一个可能导致服务被忽略的案例（来自上面的代码）：
// A service has been discovered. Is this our app?
if (instanceName.equalsIgnoreCase(SERVICE_INSTANCE)) {
当发现服务时，您的应用程序正按服务名称过滤它们，我认为两个应用程序之间的混淆是它们使用不同的服务名称。 你可以尝试删除这个＆＃34;如果＆＃34;声明并再次测试应用程序？
希望这有帮助，
古德勒克。