如何從我的位置獲取當前的GeoPoint。 我在: 經度:21.760029 緯度:54.035795GeoPoint和當前位置
但是當我使用getLatitude(),我有54.0 但我想54.035795。
請幫忙。
如何從我的位置獲取當前的GeoPoint。 我在: 經度:21.760029 緯度:54.035795GeoPoint和當前位置
但是當我使用getLatitude(),我有54.0 但我想54.035795。
請幫忙。
下面是一個緯度,經度對轉換爲GeoPoint
對象的方法:
public static GeoPoint convert(double latitude, double longitude)
{
int lat = (int)(latitude * 1E6);
int lng = (int)(longitude * 1E6);
return new GeoPoint(lat, lng);
}
是的,但它使54000000,我想要54.035795。 – Unmerciful 2013-02-11 16:31:05
我使用它:
LocationGpsListener mGPS = new LocationGpsListener(this);
currentLocation = mGPS.getLocation();
和監聽:
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
public final class LocationGpsListener implements LocationListener {
private final Context mContext;
public boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location;
Double latitude;
Double longitude;
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10;
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1;
protected LocationManager locationManager;
public LocationGpsListener(Context context) {
this.mContext = context;
getLocation();
}
public Location getLocation() {
try {
locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
Log.v("isGPSEnabled", "=" + isGPSEnabled);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
Log.v("isNetworkEnabled", "=" + isNetworkEnabled);
if (isGPSEnabled == false && isNetworkEnabled == false) {
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
public void stopUsingGPS() {
if (locationManager != null) {
locationManager.removeUpdates(LocationGpsListener.this);
}
}
public double getLatitude() {
if (location != null) {
latitude = location.getLatitude();
}
return latitude;
}
public double getLongitude() {
if (location != null) {
longitude = location.getLongitude();
}
return longitude;
}
public boolean canGetLocation() {
return this.canGetLocation;
}
public void showSettingsAlert() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
alertDialog.setTitle("Ustawienia GPS");
alertDialog.setMessage("GPS jest wyłączony. Przejść do ustawień GPS?");
alertDialog.setPositiveButton("Settings",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
}
});
alertDialog.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
@Override
public void onLocationChanged(Location location) {
this.location = location;
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
下次,編輯你的問題,不要添加錯誤的代碼作爲答案。 是否調用過'onLocationChanged()'方法?因爲可能你所得到的位置是最後一個已知的位置(來自wifi或cell),這更不準確。 – 2013-02-12 09:10:11
您可以顯示一些代碼如何檢索您的位置?因爲'getLatitude()'''getLongitude'給了我確切的位置,例如'54.035795' – 2013-02-11 17:38:54
我添加了代碼,請幫助我。 – Unmerciful 2013-02-11 18:53:23