Android 获取当前位置经纬度而不更改我的位置
我可以找到当前位置的经纬度。但是在更改当前位置之前,这些数据不会显示。我希望在不更改位置的情况下获取当前位置的经纬度Android 获取当前位置经纬度而不更改我的位置,android,gps,location,latitude-longitude,Android,Gps,Location,Latitude Longitude,我可以找到当前位置的经纬度。但是在更改当前位置之前,这些数据不会显示。我希望在不更改位置的情况下获取当前位置的经纬度 package com.example.gps; import android.app.Activity; import android.content.Context; import android.location.Location; import android.location.LocationListener; import android.location.Loca
package com.example.gps;
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.widget.Button;
import android.widget.Toast;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
public class MainActivity extends Activity {
MapView m;
Button b,b1,b2;
MapController mc;double l1;double l2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LocationManager mlocManager =
(LocationManager)getSystemService(Context.LOCATION_SERVICE);
boolean net = mlocManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
Location l = null;
if(net)
l= mlocManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(l!=null)
{
l1 = l.getLongitude();
l2 = l.getLatitude();
}
Toast.makeText(getApplicationContext(),l1+".."+l2, Toast.LENGTH_LONG).show();
LocationListener mlocListener = new MyLocationListener();
mlocManager.requestLocationUpdates( LocationManager.GPS_PROVIDER, 0, 0, mlocListener);
}
public class MyLocationListener implements LocationListener
{
@Override
public void onLocationChanged(Location loc)
{
loc.getLatitude();
loc.getLongitude();
String Text = "My current location is: "+
"Latitud = " + loc.getLatitude() +
"Longitud = " + loc.getLongitude();
Toast.makeText( getApplicationContext(),
Text,
Toast.LENGTH_SHORT).show();
}
@Override
public void onProviderDisabled(String provider)
{
Toast.makeText( getApplicationContext(),
"Gps Disabled",
Toast.LENGTH_SHORT ).show();
}
@Override
public void onProviderEnabled(String provider)
{
Toast.makeText( getApplicationContext(),
"Gps Enabled",
Toast.LENGTH_SHORT).show();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
}
}
}
由于此代码从onLocationChanged(Location loc)方法返回数据,因此在将其安装到设备上后,如果不更改位置,我将无法获取数据。但我需要纬度、经度而不更改位置。是否可能。请给出解决方案尝试此代码:
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// Define the criteria how to select the locatioin provider -> use
// default
Criteria criteria = new Criteria();
provider = locationManager.getBestProvider(criteria, false);
Location location = locationManager.getLastKnownLocation(provider);
// Initialize the location fields
if (location != null) {
System.out.println("Provider " + provider + " has been selected.");
onLocationChanged(location);
} else {
latituteField.setText("Location not available");
longitudeField.setText("Location not available");
System.out.println("Location not avilable");
}
}
/* Request updates at startup */
@Override
protected void onResume() {
super.onResume();
locationManager.requestLocationUpdates(provider, 400, 1, this);
}
/* Remove the locationlistener updates when Activity is paused */
@Override
protected void onPause() {
super.onPause();
locationManager.removeUpdates(this);
}
@Override
public void onLocationChanged(Location location) {
double lat = (double) (location.getLatitude());
double lng = (double) (location.getLongitude());
latituteField.setText(String.valueOf(lat));
longitudeField.setText(String.valueOf(lng));
Log.i(TAG, "Lattitude:" +lat);
Log.i(TAG, "Longitude:" +lng);
}
尝试在请求位置更新后获取纬度n经度(…)您将立即获取为什么不使用LastKnown位置?这应该是LocationManager提供的…当我将此代码用于新设备时,它不会得到任何结果。我认为在这种情况下getLastKnownLocation()方法返回null。但我希望用户登录我的应用程序时获得当前位置纬度经度。我在移动设备后获得数据,但我需要不更改位置的数据。请帮助我。。。。。。