Question

在我的应用程序中，需要获取当前位置信息，我使用以下代码;并将其称为buttonclick，但它在设备和模拟器中不起作用，如果有任何想法请帮助。

private void getLocationServices(){
    Thread geoThread=new Thread(){  
        public void run(){
            try{
                Criteria myCriteria = new Criteria();
                myCriteria.setCostAllowed(false);
                try{
                    LocationProvider myLocationProvider = LocationProvider.getInstance(myCriteria);
                    try{
                        locationaddress=new AddressInfo();
                        Location myLocation = myLocationProvider.getLocation(300);
                        _lattitude = myLocation.getQualifiedCoordinates().getLatitude();
                        _longitude = myLocation.getQualifiedCoordinates().getLongitude();
                        int intLatitude = (int) _lattitude * 100000;
                        int intLongitude = (int) _longitude * 100000;
                        try{
                            Landmark[] results= Locator.reverseGeocode(intLatitude, intLongitude, Locator.ADDRESS);
                            if (results != null && results.length > 0) {
                                locationaddress=results[0].getAddressInfo();
                                lblLoc.setText(locationaddress.getField(AddressInfo.CITY));
                            }
                        }catch (Exception e) {
                            // TODO: handle exception
                        }

                    }catch (Exception e) {
                        // TODO: handle exception
                    }

                }catch (Exception e) {
                    // TODO: handle exception
                }
            }catch (Exception e) {
                // TODO: handle exception
            }
        }
    };
    geoThread.start();
}

Answer 1

您是否在模拟器中模拟了GPS？模拟 - ＆gt; GPS位置然后在对话框中添加位置或配置模拟路线。

Answer 2

第一步是在你的异常处理程序中添加一些日志记录。

这可能会告诉你一些异常被抛出。一旦弄明白，你就可以看到代码可能导致错误导致异常。

Answer 3

这可能不是GPS问题。您可能正在尝试更新UI字段而不在事件线程上。有关如何避免这种情况的信息，请参阅my answer to this related question。

Answer 4

CustomMapField mMapField;
Coordinates mCoordinates;
BlackBerryCriteria blackBerryCriteria = null;
BlackBerryLocation blackBerryLocation = null;
BlackBerryLocationProvider blackBerryLocationProvider = null;
double Doublelat = 0.0;
double Doublelng = 0.0;
blackBerryCriteria = new BlackBerryCriteria();
if(GPSInfo.isGPSModeAvailable(GPSInfo.GPS_MODE_CELLSITE)){
   blackBerryCriteria.setMode(GPSInfo.GPS_MODE_CELLSITE);
}else if(GPSInfo.isGPSModeAvailable(GPSInfo.GPS_MODE_ASSIST)){
   blackBerryCriteria.setMode(GPSInfo.GPS_MODE_ASSIST);
}else if(GPSInfo.isGPSModeAvailable(GPSInfo.GPS_MODE_AUTONOMOUS)){
   blackBerryCriteria.setMode(GPSInfo.GPS_MODE_AUTONOMOUS);
}else{
   blackBerryCriteria.setCostAllowed(true);
   blackBerryCriteria.setPreferredPowerConsumption(Criteria.POWER_USAGE_LOW);
} try {
   blackBerryLocationProvider = (BlackBerryLocationProvider)               BlackBerryLocationProvider.getInstance(blackBerryCriteria);
   blackBerryLocation = (BlackBerryLocation) blackBerryLocationProvider.getLocation(60);
   QualifiedCoordinates qualifiedCoordinates = blackBerryLocation.getQualifiedCoordinates();
   Doublelat = qualifiedCoordinates.getLatitude();
   Doublelng = qualifiedCoordinates.getLongitude();
   mCoordinates = new  Coordinates(Doublelat, Doublelng, 0);
   MapView mapView = new MapView();
   mapView.setLatitude(finalintlat);
   mapView.setLongitude(finalintlng);
   mapView.setZoom(10);
   MapsArguments mapsArgs = new MapsArguments(mapView);
   Invoke.invokeApplication(Invoke.APP_TYPE_MAPS, mapsArgs);
}catch(Exception e){
   System.out.println("Error in location :"+e.toString());
   System.out.println("Error in location :"+e.getMessage());
}

有关此“混乱”的解释，请参阅：blackberry location-based services

GPS位置信息问题

4 个答案: