如何获得当前的纬度和经度？
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【中文标题】如何获得当前的纬度和经度？【英文标题】：How to get current Latitude and Longitude? 【发布时间】：2019-10-11 19:06:40 【问题描述】：我创建了一个简单的应用程序，它通过按钮单击“打开”在地图上显示给定的地理位置，现在我试图通过单击按钮“locateme”获取当前的纬度和经度，并在 EditText 中设置它们
我试图在 MainActivity 中创建一个获取当前纬度和经度的函数，但不起作用，我在 MapsActivity 中也尝试过同样的事情，但也不起作用
package com.example.aufgabe2;
import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.provider.MediaStore;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.InputType;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.maps.LocationSource;
public class MainActivity extends AppCompatActivity implements LocationListener
Button Open, locateme;
EditText latitude, longitude;
Double longitude_current;
Double latitude_current;
LocationManager locationManager;
String[] items_names = "Munich", "Tunis", "Barcelone", "Frankfurt", "Wien", "paris", "london", "dubai";
int[] Images = R.drawable.munich, R.drawable.tunis, R.drawable.barcelona, R.drawable.frank, R.drawable.wien, R.drawable.paris, R.drawable.london, R.drawable.dubai;
String[] items_lati = "48.13743", "36.8065", "41.3851", "50.110924", "48.210033", "48.8566", "51.5074", "25.2048";
String[] items_lng = "11.57549", "10.1815", "2.1734", "8.682127", "16.363449", "2.3522", "0.1278", "55.2708";
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ListView listView = (ListView) findViewById(R.id.listView);
CustomAdapter customAdapter = new CustomAdapter();
listView.setAdapter(customAdapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener()
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
latitude.setText(items_lati[position]);
longitude.setText(items_lng[position]);
);
if (googleServiceAvailable())
Toast.makeText(this, "PERFEKT ", Toast.LENGTH_LONG).show();
init();
latitude = (EditText) findViewById(R.id.Latitude);
longitude = (EditText) findViewById(R.id.Longitude);
Open = (Button) findViewById(R.id.button);
locateme = (Button) findViewById(R.id.button_locate_me);
latitude.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);
longitude.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);
//Open button for displaying the Map
Open.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
//condition here
if (longitude.length() == 0)
longitude.setError("your longitude is empty");
else if (latitude.length() == 0)
latitude.setError("your latitude is empty");
else
Toast.makeText(MainActivity.this, "values added successfully ", Toast.LENGTH_SHORT).show();
init();
);
// here is my locateme button
locateme.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED)
Location location = locationManager.getLastKnownLocation(locationManager.NETWORK_PROVIDER);
onLocationChanged(location);
);
public void init()
Open=(Button) findViewById(R.id.button);
Open.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
Intent intent = new Intent(MainActivity.this, MapsActivity.class);
Double lati =Double.parseDouble(latitude.getText().toString());
Double longi =Double.parseDouble(longitude.getText().toString());
intent.putExtra("longitude",longi);
intent.putExtra("latitude",lati);
startActivity(intent);
);
//testing the availability of google service
public boolean googleServiceAvailable()
GoogleApiAvailability api = GoogleApiAvailability.getInstance();
int isavailable = api.isGooglePlayServicesAvailable(this);
if (isavailable == ConnectionResult.SUCCESS)
return true;
else if (api.isUserResolvableError(isavailable))
Dialog dialog = api.getErrorDialog(this,isavailable,0);
dialog.show();
else
Toast.makeText(this,"Cant connect to play services ", Toast.LENGTH_LONG).show();
return false;
@Override
public void onLocationChanged(Location location)
Toast.makeText(this,"Cant connect your current location ", Toast.LENGTH_LONG).show();
latitude_current=location.getLatitude();
longitude_current=location.getLongitude();
latitude.setText(String.valueOf(latitude_current));
longitude.setText(String.valueOf(longitude_current));
@Override
public void onStatusChanged(String provider, int status, Bundle extras)
@Override
public void onProviderEnabled(String provider)
@Override
public void onProviderDisabled(String provider)
class CustomAdapter extends BaseAdapter
@Override
public int getCount()
return Images.length;
@Override
public Object getItem(int position)
return null;
@Override
public long getItemId(int position)
return 0;
@Override
public View getView(int i, View view, ViewGroup viewGroup)
view = getLayoutInflater().inflate(R.layout.mylist, null);
ImageView imageView = (ImageView) view.findViewById(R.id.imageView);
TextView textView_name = (TextView) view.findViewById(R.id.textView_name);
imageView.setImageResource(Images[i]);
textView_name.setText(items_names[i]);
return view;
我希望“locateme”按钮获取当前的经度和纬度并在 EditText 中显示它们
【问题讨论】：
嘿，你试过使用 FusedLocationProviderClient 吗？它使获取位置变得非常容易。你可以在这里medium.com/@droidbyme/… 和developers.google.com/android/reference/com/google/android/gms/… 阅读更多相关信息。我也有一个使用谷歌地图的安卓应用程序，你可以看看这里github.com/PabiMoloi/Location/blob/master/app/src/main/java/com/… 【参考方案1】：清单
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
代码
GPSTracker gpsTracker = new GPSTracker(this);
if (gpsTracker.getIsGPSTrackingEnabled())
String stringLatitude = String.valueOf(gpsTracker.latitude);
textview = (TextView)findViewById(R.id.fieldLatitude);
textview.setText(stringLatitude);
String stringLongitude = String.valueOf(gpsTracker.longitude);
textview = (TextView)findViewById(R.id.fieldLongitude);
textview.setText(stringLongitude);
GPS 追踪器
import java.io.IOException;
import java.util.List;
import java.util.Locale;
import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
import android.util.Log;
/**
* Create this Class from tutorial :
* http://www.androidhive.info/2012/07/android-gps-location-manager- tutorial
*
* For Geocoder read this : http://***.com/questions/472313/android-reverse-geocoding- getfromlocation
*
*/
public class GPSTracker extends Service implements LocationListener
// Get Class Name
private static String TAG = GPSTracker.class.getName();
private final Context mContext;
// flag for GPS Status
boolean isGPSEnabled = false;
// flag for network status
boolean isNetworkEnabled = false;
// flag for GPS Tracking is enabled
boolean isGPSTrackingEnabled = false;
Location location;
double latitude;
double longitude;
// How many Geocoder should return our GPSTracker
int geocoderMaxResults = 1;
// The minimum distance to change updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
// Declaring a Location Manager
protected LocationManager locationManager;
// Store LocationManager.GPS_PROVIDER or LocationManager.NETWORK_PROVIDER information
private String provider_info;
public GPSTracker(Context context)
this.mContext = context;
getLocation();
/**
* Try to get my current location by GPS or Network Provider
*/
public void getLocation()
try
locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE);
//getting GPS status
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
//getting network status
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
// Try to get location if you GPS Service is enabled
if (isGPSEnabled)
this.isGPSTrackingEnabled = true;
Log.d(TAG, "Application use GPS Service");
/*
* This provider determines location using
* satellites. Depending on conditions, this provider may take a while to return
* a location fix.
*/
provider_info = LocationManager.GPS_PROVIDER;
else if (isNetworkEnabled) // Try to get location if you Network Service is enabled
this.isGPSTrackingEnabled = true;
Log.d(TAG, "Application use Network State to get GPS coordinates");
/*
* This provider determines location based on
* availability of cell tower and WiFi access points. Results are retrieved
* by means of a network lookup.
*/
provider_info = LocationManager.NETWORK_PROVIDER;
// Application can use GPS or Network Provider
if (!provider_info.isEmpty())
locationManager.requestLocationUpdates(
provider_info,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES,
this
);
if (locationManager != null)
location = locationManager.getLastKnownLocation(provider_info);
updateGPSCoordinates();
catch (Exception e)
//e.printStackTrace();
Log.e(TAG, "Impossible to connect to LocationManager", e);
/**
* Update GPSTracker latitude and longitude
*/
public void updateGPSCoordinates()
if (location != null)
latitude = location.getLatitude();
longitude = location.getLongitude();
/**
* GPSTracker latitude getter and setter
* @return latitude
*/
public double getLatitude()
if (location != null)
latitude = location.getLatitude();
return latitude;
/**
* GPSTracker longitude getter and setter
* @return
*/
public double getLongitude()
if (location != null)
longitude = location.getLongitude();
return longitude;
/**
* GPSTracker isGPSTrackingEnabled getter.
* Check GPS/wifi is enabled
*/
public boolean getIsGPSTrackingEnabled()
return this.isGPSTrackingEnabled;
/**
* Stop using GPS listener
* Calling this method will stop using GPS in your app
*/
public void stopUsingGPS()
if (locationManager != null)
locationManager.removeUpdates(GPSTracker.this);
/**
* Function to show settings alert dialog
*/
public void showSettingsAlert()
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
//Setting Dialog Title
alertDialog.setTitle(R.string.GPSAlertDialogTitle);
//Setting Dialog Message
alertDialog.setMessage(R.string.GPSAlertDialogMessage);
//On Pressing Setting button
alertDialog.setPositiveButton(R.string.action_settings, new DialogInterface.OnClickListener()
@Override
public void onClick(DialogInterface dialog, int which)
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
);
//On pressing cancel button
alertDialog.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener()
@Override
public void onClick(DialogInterface dialog, int which)
dialog.cancel();
);
alertDialog.show();
/**
* Get list of address by latitude and longitude
* @return null or List<Address>
*/
public List<Address> getGeocoderAddress(Context context)
if (location != null)
Geocoder geocoder = new Geocoder(context, Locale.ENGLISH);
try
/**
* Geocoder.getFromLocation - Returns an array of Addresses
* that are known to describe the area immediately surrounding the given latitude and longitude.
*/
List<Address> addresses = geocoder.getFromLocation(latitude, longitude, this.geocoderMaxResults);
return addresses;
catch (IOException e)
//e.printStackTrace();
Log.e(TAG, "Impossible to connect to Geocoder", e);
return null;
/**
* Try to get AddressLine
* @return null or addressLine
*/
public String getAddressLine(Context context)
List<Address> addresses = getGeocoderAddress(context);
if (addresses != null && addresses.size() > 0)
Address address = addresses.get(0);
String addressLine = address.getAddressLine(0);
return addressLine;
else
return null;
/**
* Try to get Locality
* @return null or locality
*/
public String getLocality(Context context)
List<Address> addresses = getGeocoderAddress(context);
if (addresses != null && addresses.size() > 0)
Address address = addresses.get(0);
String locality = address.getLocality();
return locality;
else
return null;
/**
* Try to get Postal Code
* @return null or postalCode
*/
public String getPostalCode(Context context)
List<Address> addresses = getGeocoderAddress(context);
if (addresses != null && addresses.size() > 0)
Address address = addresses.get(0);
String postalCode = address.getPostalCode();
return postalCode;
else
return null;
/**
* Try to get CountryName
* @return null or postalCode
*/
public String getCountryName(Context context)
List<Address> addresses = getGeocoderAddress(context);
if (addresses != null && addresses.size() > 0)
Address address = addresses.get(0);
String countryName = address.getCountryName();
return countryName;
else
return null;
@Override
public void onLocationChanged(Location location)
@Override
public void onStatusChanged(String provider, int status, Bundle extras)
@Override
public void onProviderEnabled(String provider)
@Override
public void onProviderDisabled(String provider)
@Override
public IBinder onBind(Intent intent)
return null;
【讨论】：
感谢您的回答，但我尝试将此代码集成到我的项目中，我得到的纬度和经度始终为 0。 您授予权限了吗？以上是关于如何获得当前的纬度和经度？的主要内容，如果未能解决你的问题，请参考以下文章