[英]Get Lat and Log of actual location without google maps
我尝试使用基于网络和GP提供商的代码来获得设备所在的理想位置,但是经纬度始终不准确。 我使用http://www.vogella.com/tutorials/AndroidLocationAPI/article.html来获取值,并将lat设置为19.10295898,lon设置为72.8866532。 谷歌地图上的纬度为19.103114,72.8867978。 有区别。 我们可以以某种方式实际匹配它吗? 使用的代码如下:
package jss.fusedlocation;
import android.app.Activity;
import android.content.Context;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.nearby.messages.Distance;
/**
* Created by DELL WORLD on 1/23/2017.
*/
public class ShowLocationActivity extends Activity implements LocationListener {
private TextView latituteField;
private TextView longitudeField;
private LocationManager locationManager;
private String provider;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
latituteField = (TextView) findViewById(R.id.TextView02);
longitudeField = (TextView) findViewById(R.id.TextView04);
// Get the location manager
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);
location.setAccuracy(1);
// 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");
}
}
/* Request updates at startup */
@Override
protected void onResume() {
super.onResume();
locationManager.requestLocationUpdates(provider, 1, 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));
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
Toast.makeText(this, "Enabled new provider " + provider,
Toast.LENGTH_SHORT).show();
}
@Override
public void onProviderDisabled(String provider) {
Toast.makeText(this, "Disabled provider " + provider,
Toast.LENGTH_SHORT).show();
}
}
我尝试使用基于网络和GP提供商的代码来获得设备所在的理想位置
通常,无论如何都不可能“获得设备所在的完美位置”。 获取位置涉及很多变量,并不是所有这些变量都会一直对您有利。
我们真的可以以某种方式匹配它吗
据我们所知,Google Maps使用Play Services SDK的融合位置提供商 。
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