comment gérer une file d'attente dans android?? java

J'ai besoin de savoir, comment gérer une file d'attente dans android code java. Je tiens à feu, de méthode lorsque la file d'attente n'est pas vide. Quelqu'un peut-il donner des conseils à ce sujet...

Actuellement, j'ai mis en place un timer de la tâche. Cette classe voit fréquemment l'état des files d'attente. Lorsque la file d'attente n'est pas vide, cela va déclencher la méthode.

Je veux savoir ont des façons de le faire..

public class GSMLocationTask s'étend TimerTask
{
Gestionnaire TDGetDeviceLocHandler;

int myLatitude, myLongitude;
int cid;
int lac;
double latitude;
double longitude;
TelephonyManager telephonyManager;
GsmCellLocation cellLocation;
LocationSendTask lst;
public GSMLocationTask(LocationSendTask locSendtask) {
//TODO Auto-generated constructor stub
this.lst = locSendtask;
this.telephonyManager = (TelephonyManager)TrackDriodApplication.getAppContext().getSystemService(TrackDriodApplication.getAppContext().TELEPHONY_SERVICE);
this.cellLocation = (GsmCellLocation) telephonyManager.getCellLocation();
}
@Override
public void run() 
{
Log.d("GSMLocationTask", "GSM Location task Start run...");
//cid = cellLocation.getCid();
//lac = cellLocation.getLac();
cid = 256229;//cellLocation.getCid();
lac = 30310;//cellLocation.getLac();
try 
{
//new TDGetDeviceLocation().execute(null, null, null); 
if(RqsLocation(cid, lac))
{
latitude = (float)myLatitude/1000000;
longitude = (float)myLongitude/1000000;
Log.d("GSMLocationTask", "Lat :" +latitude +" Long :"+longitude);
}
DataTransaction dtra = new DataTransaction();
ServerSettings ss = new ServerSettings();
ss = dtra.getDeviceSettings(TrackDriodApplication.getAppContext());
String deviceID = String.valueOf(ss.getDeviceID());
Log.d("GSMLocationTask", "locationSend obj create");
LocationSend loc = new LocationSend();
Log.d("GSMLocationTask", "set lat");
loc.setLatitude(Double.toString(latitude));
Log.d("GSMLocationTask", "set long");
loc.setLongitude(Double.toString(longitude));
Log.d("GSMLocationTask", "set devid");
loc.setDeviceID(deviceID);
Log.d("GSMLocationTask", "set set datetime");
loc.setDateTime(getCurrentTime());
Log.d("GSMLocationTask", "add loc to queue sart");
lst.addLocationToQueue(loc);
Log.d("GSMLocationTask", "add loc to queue end");
} 
catch (Exception e)
{  
}
}
private static String getCurrentTime()
{
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String currentDateandTime = sdf.format(new Date());
return currentDateandTime;
}
private Boolean RqsLocation(int cid, int lac)
{          
Log.d("GSMLocationTask", "call ReqLocation");
Boolean result = false;
String urlmmap = "http://www.google.com/glm/mmap";  
try {
Log.d("GSMLocationTask", "start try..");
URL url = new URL(urlmmap);
URLConnection conn = url.openConnection();
HttpURLConnection httpConn = (HttpURLConnection) conn;      
httpConn.setRequestMethod("POST");
httpConn.setDoOutput(true);
httpConn.setDoInput(true);
httpConn.connect();
OutputStream outputStream = httpConn.getOutputStream();
WriteData(outputStream, cid, lac);
InputStream inputStream = httpConn.getInputStream();
DataInputStream dataInputStream = new DataInputStream(inputStream);
dataInputStream.readShort();
dataInputStream.readByte();
int code = dataInputStream.readInt();
if (code == 0) 
{
myLatitude = dataInputStream.readInt();
myLongitude = dataInputStream.readInt();
result = true;   
}
Log.d("GSMLocationTask", "end try..");
} catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
Log.d("GSMLocationTask", "return result :" +result);
return result;
}
private void WriteData(OutputStream out, int cid, int lac) throws IOException        
{    
DataOutputStream dataOutputStream = new DataOutputStream(out);
dataOutputStream.writeShort(21);
dataOutputStream.writeLong(0);
dataOutputStream.writeUTF("en");
dataOutputStream.writeUTF("Android");
dataOutputStream.writeUTF("1.0");
dataOutputStream.writeUTF("Web");
dataOutputStream.writeByte(27);
dataOutputStream.writeInt(0);
dataOutputStream.writeInt(0);
dataOutputStream.writeInt(3);
dataOutputStream.writeUTF("");           
dataOutputStream.writeInt(cid);
dataOutputStream.writeInt(lac);              
dataOutputStream.writeInt(0);
dataOutputStream.writeInt(0);
dataOutputStream.writeInt(0);
dataOutputStream.writeInt(0);
dataOutputStream.flush();       
}
class TDGetDeviceLocation extends AsyncTask<Object, Object, Object>{
@Override
protected Object doInBackground(Object... params) {
try 
{               
Log.d("GSMLocationTask", "doInBackground start........");
if(RqsLocation(cid, lac))
{
latitude = (float)myLatitude/1000000;
longitude = (float)myLongitude/1000000;
}
return null;
} 
catch (Exception e) 
{ 
//TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}       
} 

}