獲取gps在黑莓的位置

Question

在我的應用程序中，我嘗試獲取用戶位置，但經緯度都是0.0。我已經看到黑莓論壇，但無法找到我做錯了什麼？

代碼：

package com.MyChamberApp; 

    import javax.microedition.location.Criteria; 
    import javax.microedition.location.Location; 
    import javax.microedition.location.LocationListener; 
    import javax.microedition.location.LocationProvider; 

    public class GPS_Location { 
    static double longi; 
    static double lati; 

    public GPS_Location() { 

    } 

    public void location() 
    { 
     new LocationTracker(); 
    } 

    class LocationTracker 
    { 
     private LocationProvider provider; 
     Criteria cr; 

     public LocationTracker() 
     { 
     resetGPS(); 
     } 

     public void resetGPS() { 

     try { 
     cr = new Criteria(); 
     cr.setPreferredPowerConsumption(Criteria.POWER_USAGE_HIGH); 
     cr.setPreferredResponseTime(120000); 
       cr.setCostAllowed(true); 
     provider = LocationProvider.getInstance(cr); 
     provider.getLocation(120); 
     if (provider != null) 
     { 
     provider.setLocationListener(new MyLocationListener(), 1,1,1); 
     } 
     } catch (Exception e) {} 

     } 

     public void run(){} 

    private class MyLocationListener implements LocationListener 
     { 
     public void providerStateChanged(LocationProvider provider,int newState) 
     { 
     if (newState == LocationProvider.TEMPORARILY_UNAVAILABLE) 
     { 
      provider.reset(); 
      resetGPS(); 
     } 
     if (newState == LocationProvider.OUT_OF_SERVICE) 
     { 
     provider.reset(); 
     resetGPS(); 
     } 
    } 

    public void locationUpdated(LocationProvider provider,Location location) 
     { 
     if (location != null && location.isValid()) { 
     try { 
     lati = location.getQualifiedCoordinates().getLatitude(); 
     longi = location.getQualifiedCoordinates().getLongitude(); 
     } catch (Exception e) {} 
    } 
     } 
    } 
    } 
} 

我已經嘗試了curve8300這個代碼，bold9000 它運作良好，在模擬器，但是，設備不取值，即使我手動刷新我的GPS，從選項 - >高級選項 - - > GPS。 在此先感謝!!!!!!!!!!!!!!!!

Answer 1

criteria.setHorizontalAccuracy(500); 
criteria.setVerticalAccuracy(500); 

設置水平和垂直精度低values.this將有助於在一定程度上在準確性方面

Answer 2

Criteria criteria = new Criteria(); 

criteria.setHorizontalAccuracy(5000); 
      criteria.setVerticalAccuracy(5000); 
      criteria.setCostAllowed(true); 
      criteria.setPreferredPowerConsumption(Criteria.POWER_USAGE_HIGH); 
      _locationProvider = LocationProvider.getInstance(criteria); 
       Location location =_locationProvider.getLocation(-1); 
      _longitude = location.getQualifiedCoordinates().getLongitude(); 
      _latitude = location.getQualifiedCoordinates().getLatitude(); 
      _altitude = location.getQualifiedCoordinates().getAltitude(); 
      _speed = location.getSpeed(); 
      if(_locationProvider!=null) 
      {     
       _locationProvider.setLocationListener(new LocationListenerImpl(), _interval, 1, 1); 

      } 

此代碼爲我工作!!!!!!!