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我需要獲取用戶的緯度和經度，以按距離遞增的順序顯示數據。黑莓無法獲取經緯度
我使用2個不同國家的2部手機來測試該應用程序。在南亞使用時，它可以與bb大膽的9700配合使用。但是在nyc中使用bb 9650時不會。 我嘗試使用基於bb gps api的課程以及谷歌塔基gps課程。
這兩個似乎都不能用nbc 9650工作。我使用其他基於位置的應用程序，如yelp等，完美的工作。
附加兩個碼
手機GPS
公共類GPS_Location { 私人字符串日誌; double longi; double lati;
public GPS_Location()
{
new LocationTracker();
}
public boolean onClose()
{
Application.getApplication().requestBackground();
return false;
}
class LocationTracker extends TimerTask
{
private Timer timer;
private LocationProvider provider;
Criteria cr;
public LocationTracker()
{
timer = new Timer();
cr= new Criteria();
resetGPS();
timer.schedule(this, 0, 60000);
}
public void resetGPS()
{
try
{
provider = LocationProvider.getInstance(cr);
if(provider != null)
{
/*provider.setLocationListener(null, 0, 0, 0);
provider.reset();
provider = null;*/
provider.setLocationListener(new MyLocationListener(), 3, -1, -1);
}
//provider = LocationProvider.getInstance(null);
} catch(Exception e)
{
}
}
public void run()
{
System.out.println("********************");
}
private class MyLocationListener implements LocationListener
{
public void locationUpdated(LocationProvider provider, Location location)
{
if(location != null && location.isValid())
{
QualifiedCoordinates qc = location.getQualifiedCoordinates();
try
{
lati = location.getQualifiedCoordinates().getLatitude();
System.out.println("********************latitude :: "+lati);
longi = location.getQualifiedCoordinates().getLongitude();
System.out.println("********************longitude ::"+longi);
CustomSession.getInstance().setLatitude(lati);
CustomSession.getInstance().setLongitude(longi);
}
catch(Exception e)
{
}
}
}
public void providerStateChanged(LocationProvider provider, int newState)
{
//LocationTracker.this.resetGPS();
if(newState == LocationProvider.TEMPORARILY_UNAVAILABLE)
{
provider.reset();
provider.setLocationListener(null, 0, 0, -1);
}
}
}
}
}
小區塔谷歌服務
公共類JsonGenerator {
public void locating() throws IOException{
byte[] postData = getGPSJsonObject().toString().getBytes();
JSONObject jsonObject = null;
HttpConnection gpsConnection;
DataOutputStream os;
DataInputStream dis;
String gpsString = retrunURLString("http://www.google.com/loc/json");
try {
gpsConnection = (HttpConnection) Connector.open(gpsString);
gpsConnection.setRequestMethod(HttpConnection.POST);
gpsConnection.setRequestProperty(
HttpProtocolConstants.HEADER_CONTENT_LENGTH, String
.valueOf(postData.length));
gpsConnection.setRequestProperty(
HttpProtocolConstants.HEADER_CONTENT_TYPE,
"application/requestJson");
os = gpsConnection.openDataOutputStream();
os.write(postData);
int rc = gpsConnection.getResponseCode();
if (rc != HttpConnection.HTTP_OK) {
return;
}
dis = gpsConnection.openDataInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int j = 0;
while ((j = dis.read()) != -1) {
baos.write(j);
}
byte[] data = baos.toByteArray();
String jsonString = new String(data);
try {
jsonObject = new JSONObject(jsonString);
} catch (JSONException e) {
e.printStackTrace();
}
JSONObject locationObject = jsonObject.getJSONObject("location");
if (locationObject.getDouble("latitude") != 0.0
&& locationObject.getDouble("longitude") != 0.0) {
System.out.println("Latitute is =================::::"+locationObject.getDouble("latitude"));
System.out.println("Llongitude is =================::::"+locationObject.getDouble("longitude"));
CustomSession.getInstance().setLatitude(locationObject.getDouble("latitude"));
CustomSession.getInstance().setLongitude(locationObject.getDouble("longitude"));
// Global.horizontal_accuracy = locationObject // .getDouble（ 「精度」） ; // Global.locAvailable = true; } } catch（JSONException e）{TODO：handle exception e.printStackTrace（）; }
}
public JSONObject getGPSJsonObject() {
JSONObject jsonString = new JSONObject();
try {
jsonString.put("version", "1.1.0");
jsonString.put("host", "maps.google.com");
int x = RadioInfo.getMCC(RadioInfo.getCurrentNetworkIndex());
jsonString.put("home_mobile_country_code", Integer.parseInt(Integer
.toHexString(x)));
jsonString.put("home_mobile_network_code", RadioInfo
.getMNC(RadioInfo.getCurrentNetworkIndex()));
int radio = RadioInfo.getNetworkType();
if(radio==RadioInfo.NETWORK_CDMA){
jsonString.put("radio_type", "cdma");
}
else{
jsonString.put("radio_type", "gsm");
}
jsonString.put("carrier", RadioInfo.getCurrentNetworkName());
jsonString.put("request_address", true);
jsonString.put("address_language", "en_GB");
CellTower cellInfo = new CellTower(Integer.toHexString(x), GPRSInfo
.getCellInfo().getLAC(), GPRSInfo.getCellInfo().getRSSI(),
GPRSInfo.getCellInfo().getCellId(), 0, RadioInfo
.getMNC(RadioInfo.getCurrentNetworkIndex()));
Hashtable map = new Hashtable();
map.put("mobile_country_code", new Integer(Integer
.parseInt(cellInfo.mobileCountryCode)));
map.put("location_area_code",
new Integer(cellInfo.locationAreaCode));
map.put("signal_strength", new Integer(cellInfo.signalStrength));
map.put("cell_id", new Integer(cellInfo.cellID));
map.put("age", new Integer(0));
map.put("mobile_network_code", new Integer(
cellInfo.mobileNetworkCode));
JSONArray array = new JSONArray();
array.put(0, map);
jsonString.put("cell_towers", array);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return jsonString;
}
public static String retrunURLString(String url) {
String urlString = null;
if (WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) {
// WIFI
urlString = url + ";interface=wifi";
} else {
int coverageStatus = CoverageInfo.getCoverageStatus();
ServiceRecord record = getWAP2ServiceRecord();
if (record != null
&& (coverageStatus & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT) {
// WAP 2.0
urlString = url + ";deviceside=true;ConnectionUID="
+ record.getUid();
} else if ((coverageStatus & CoverageInfo.COVERAGE_MDS) == CoverageInfo.COVERAGE_MDS) {
// BES/MDS
urlString = url + ";deviceside=false";
} else if ((coverageStatus & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT) {
// Direct TCP/IP
urlString = url + ";deviceside=true";
} else if ((coverageStatus & CoverageInfo.COVERAGE_BIS_B) == CoverageInfo.COVERAGE_BIS_B) {
// BIS
urlString = url + ";deviceside=false;ConnectionUID="
+ record.getUid();
}
}
return urlString;
}
protected static ServiceRecord getWAP2ServiceRecord() {
ServiceBook sb = ServiceBook.getSB();
ServiceRecord[] records = sb.getRecords();
for (int i = 0; i < records.length; i++) {
String cid = records[i].getCid().toLowerCase();
String uid = records[i].getUid().toLowerCase();
if (cid.indexOf("wptcp") != -1 && uid.indexOf("wifi") == -1
&& uid.indexOf("mms") == -1) {
return records[i];
}
}
return null;
}
private class CellTower {
public String mobileCountryCode;
public int locationAreaCode;
public int signalStrength;
public int cellID;
public int age;
public int mobileNetworkCode;
private CellTower(String mcc, int lac, int ss, int ci, int a, int mnc) {
mobileCountryCode = mcc;
locationAreaCode = lac;
signalStrength = ss;
cellID = ci;
age = a;
mobileNetworkCode = mnc;
}
}
}