myReverseGeocode가 시작되지 않습니다.

Question

아래 코드에서 myReverseGeocode address = new myReverseGeocode (위도, 경도)를 호출합니다. , gpsData.append (address.temp); 항상 거의 immediatelly Thread가 (즉, myReverseGeocode의 생성자에서 시작)가 시작 된 후 요청 때문에 항상 null로 temp을 얻을 "널 (null)"

public HelloBlackBerryScreen() { 
     super(MainScreen.VERTICAL_SCROLL | MainScreen.VERTICAL_SCROLLBAR); 
     setTitle("Get Address"); 

     ButtonField buttonField_1 = new ButtonField("Get GPS", ButtonField.CONSUME_CLICK | ButtonField.FIELD_RIGHT); 
     add(buttonField_1); 
     buttonField_1.setChangeListener(new FieldChangeListener() { 
      public void fieldChanged(Field arg0, int arg1) { 
       Criteria c = new Criteria();      

       try { 
        LocationProvider lp = LocationProvider.getInstance(c); 
        if(lp!=null) 
        { 
         lp.setLocationListener(new LocationListenerImpl(), 3, 1, 1); 
         myReverseGeocode address = new myReverseGeocode(latitude, longitude); 

         gpsData.append(address.temp); 
         myloc = gpsData.toString(); 
        } 



       } catch (LocationException le) {       
        ; 
       } 

myReverseGeocode.java 


package mypackage; 

import javax.microedition.location.AddressInfo; 
import javax.microedition.location.Landmark; 

import net.rim.device.api.lbs.Locator; 
import net.rim.device.api.lbs.LocatorException; 

public class myReverseGeocode { 
    private Thread reverseGeocode; 
    public AddressInfo addrInfo = null; 
    String temp; 

    public myReverseGeocode(final double lt, final double ln) 
    { 
     Runnable thread = new Runnable() 
      { 
       public void run() 
       { 

        int latitude = (int)(lt * 100000); 
        int longitude = (int)(ln * 100000); 
        try 
        { 
         Landmark[] results = Locator.reverseGeocode(latitude, longitude, Locator.ADDRESS); 

         if (results != null && results.length > 0) 
          temp = "inside if"; 
         else 
          temp = "in else"; 
        } 
        catch (LocatorException lex) 
        { 
        } 
       } 
      }; 
     reverseGeocode = new Thread(thread); 
     reverseGeocode.setPriority(Thread.MIN_PRIORITY); 
     reverseGeocode.start(); 
    } 

} 

Answer 1

을 보여줍니다. 실제 temp 값을 얻은 후에는 화면의 UI를 우회시키기 위해 myReverseGeocode을 재 설계해야합니다.