一連の手順に従って、非同期タスクを作成して、デバイス間でファイルを検索および共有しているときに接続を確認することができます。
ファンクションdeviceDiscovered()
とinquiryCompleted()
は、デバイスが見つかったときと照会が完了したときに実行されるものです。
デバイスが切断された場合、あなたはラインでそれをする方法inqueryCompleted
から通知し、ハンドルになるだろう:InterruptedException
あなたが扱うことができるで
try {
synchronized(lock){
lock.wait();
}
}
catch (InterruptedException e) {
e.printStackTrace();
}
エラーを。
package bt;
import java.io.OutputStream;
import java.util.ArrayList;
import javax.bluetooth.DataElement;
import javax.bluetooth.DeviceClass;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.DiscoveryListener;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.RemoteDevice;
import javax.bluetooth.ServiceRecord;
import javax.bluetooth.UUID;
import javax.microedition.io.Connector;
import javax.obex.ClientSession;
import javax.obex.HeaderSet;
import javax.obex.Operation;
import javax.obex.ResponseCodes;
import bt.BTListener.MyDeviceListenerFilter;
public class MyDiscoveryListener implements DiscoveryListener{
private static Object lock=new Object();
public ArrayList<RemoteDevice> devices;
public MyDiscoveryListener() {
devices = new ArrayList<RemoteDevice>();
}
public static void main(String[] args) {
MyDiscoveryListener listener = new MyDiscoveryListener();
try{
LocalDevice localDevice = LocalDevice.getLocalDevice();
DiscoveryAgent agent = localDevice.getDiscoveryAgent();
agent.startInquiry(DiscoveryAgent.GIAC, listener);
try {
synchronized(lock){
lock.wait();
}
}
catch (InterruptedException e) {
e.printStackTrace();
return;
}
System.out.println("Device Inquiry Completed. ");
UUID[] uuidSet = new UUID[1];
uuidSet[0]=new UUID(0x1105); //OBEX Object Push service
int[] attrIDs = new int[] {
0x0100 // Service name
};
for (RemoteDevice device : listener.devices) {
agent.searchServices(
attrIDs,uuidSet,device,listener);
try {
synchronized(lock){
lock.wait();
}
}
catch (InterruptedException e) {
e.printStackTrace();
return;
}
System.out.println("Service search finished.");
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void deviceDiscovered(RemoteDevice btDevice, DeviceClass arg1) {
String name;
try {
name = btDevice.getFriendlyName(false);
} catch (Exception e) {
name = btDevice.getBluetoothAddress();
}
devices.add(btDevice);
System.out.println("device found: " + name);
}
@Override
public void inquiryCompleted(int arg0) {
synchronized(lock){
lock.notify();
}
}
@Override
public void serviceSearchCompleted(int arg0, int arg1) {
synchronized (lock) {
lock.notify();
}
}
@Override
public void servicesDiscovered(int transID, ServiceRecord[] servRecord) {
for (int i = 0; i < servRecord.length; i++) {
String url = servRecord[i].getConnectionURL(ServiceRecord.NOAUTHENTICATE_NOENCRYPT, false);
if (url == null) {
continue;
}
DataElement serviceName = servRecord[i].getAttributeValue(0x0100);
if (serviceName != null) {
System.out.println("service " + serviceName.getValue() + " found " + url);
if(serviceName.getValue().equals("OBEX Object Push")){
sendMessageToDevice(url);
}
} else {
System.out.println("service found " + url);
}
}
}
private static void sendMessageToDevice(String serverURL){
try{
System.out.println("Connecting to " + serverURL);
ClientSession clientSession = (ClientSession) Connector.open(serverURL);
HeaderSet hsConnectReply = clientSession.connect(null);
if (hsConnectReply.getResponseCode() != ResponseCodes.OBEX_HTTP_OK) {
System.out.println("Failed to connect");
return;
}
HeaderSet hsOperation = clientSession.createHeaderSet();
hsOperation.setHeader(HeaderSet.NAME, "Hello.txt");
hsOperation.setHeader(HeaderSet.TYPE, "text");
//Create PUT Operation
Operation putOperation = clientSession.put(hsOperation);
// Send some text to server
byte data[] = "Hello World !!!".getBytes("iso-8859-1");
OutputStream os = putOperation.openOutputStream();
os.write(data);
os.close();
putOperation.close();
clientSession.disconnect(null);
clientSession.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
}