Java 获取当前的纬度和经度android
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时间：2020-08-11 10:27:15 来源:igfitidea点击:
Get current latitude and longitude android
提问by Soham
Requirement:
要求：
1.Sometimes(not everytime) I am getting latitude and longitude 0.0.
1.有时（不是每次）我得到纬度和经度 0.0。
2.I want to know how to get the location update after user has enabled the gps from the settings.
2.我想知道如何在用户从设置中启用 GPS 后获取位置更新。
Here is my code
这是我的代码
public class GPSTracker extends Service implements LocationListener {
private final Context mContext;
// flag for GPS status
boolean isGPSEnabled = false;
// flag for network status
boolean isNetworkEnabled = false;
// flag for GPS status
boolean canGetLocation = false;
Location location; // location
double latitude; // latitude
double longitude; // longitude
// 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;
public GPSTracker(Context context) {
this.mContext = context;
getLocation();
}
public Location 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);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
// if GPS Enabled get lat/long using GPS Services
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;
}
/**
* Stop using GPS listener
* Calling this function will stop using GPS in your app
* */
public void stopUsingGPS(){
if(locationManager != null){
locationManager.removeUpdates(GPSTracker.this);
}
}
/**
* Function to get latitude
* */
public double getLatitude(){
if(location != null){
latitude = location.getLatitude();
}
// return latitude
return latitude;
}
/**
* Function to get longitude
* */
public double getLongitude(){
if(location != null){
longitude = location.getLongitude();
}
// return longitude
return longitude;
}
/**
* Function to check GPS/wifi enabled
* @return boolean
* */
public boolean canGetLocation() {
return this.canGetLocation;
}
/**
* Function to show settings alert dialog
* On pressing Settings button will lauch Settings Options
* */
public void showSettingsAlert(){
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
// Setting Dialog Title
alertDialog.setTitle("GPS is settings");
// Setting Dialog Message
alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
// On pressing Settings button
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);
}
});
// on pressing cancel button
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
From my activity class I am calling like this
在我的活动课上，我是这样打电话的
gps = new GPSTracker(this);
// check if GPS enabled
if(gps.canGetLocation()){
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
// \n is for new line
Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show();
}else{
// can't get location
// GPS or Network is not enabled
// Ask user to enable GPS/network in settings
gps.showSettingsAlert();
}
采纳答案by Gabe Sechan
See my post at http://gabesechansoftware.com/location-tracking/. The code you're using is just broken. It should never be used. The behavior you're seeing is one of the bugs- it doesn't handle the case of getLastLocation returning null, an expected failure. It was written by someone who kind of knew what he was doing, but it got highly upvoted several years ago and screws people up to this day.
请参阅我在http://gabesechansoftware.com/location-tracking/ 上的帖子。您使用的代码已损坏。它不应该被使用。您看到的行为是错误之一 - 它不处理 getLastLocation 返回 null 的情况，这是预期的失败。它是由一个知道他在做什么的人写的，但几年前它得到了高度的支持，直到今天都把人们搞砸了。
回答by Mano
Don,t Forget to put service in manifest file
不要忘记将服务放在清单文件中
<service
android:name"your package name.GPSTracker"
android:enabled="true" >
</service>
link for Reference, try this link
参考链接，试试这个链接
回答by Deepshikha Puri
I created a tutorial to get the current latitude and longitude using location manager.Download source code here (Get Current Location Using Background Service)
我创建了一个使用位置管理器获取当前纬度和经度的教程。在此处下载源代码（使用后台服务获取当前位置）
MainActivity.java
主活动.java
package servicetutorial.service;
import android.*;
import android.app.Activity;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.preference.PreferenceManager;
import android.renderscript.Double2;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
public class MainActivity extends Activity {
Button btn_start;
private static final int REQUEST_PERMISSIONS = 100;
boolean boolean_permission;
TextView tv_latitude, tv_longitude, tv_address,tv_area,tv_locality;
SharedPreferences mPref;
SharedPreferences.Editor medit;
Double latitude,longitude;
Geocoder geocoder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn_start = (Button) findViewById(R.id.btn_start);
tv_address = (TextView) findViewById(R.id.tv_address);
tv_latitude = (TextView) findViewById(R.id.tv_latitude);
tv_longitude = (TextView) findViewById(R.id.tv_longitude);
tv_area = (TextView)findViewById(R.id.tv_area);
tv_locality = (TextView)findViewById(R.id.tv_locality);
geocoder = new Geocoder(this, Locale.getDefault());
mPref = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
medit = mPref.edit();
btn_start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (boolean_permission) {
if (mPref.getString("service", "").matches("")) {
medit.putString("service", "service").commit();
Intent intent = new Intent(getApplicationContext(), GoogleService.class);
startService(intent);
} else {
Toast.makeText(getApplicationContext(), "Service is already running", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(getApplicationContext(), "Please enable the gps", Toast.LENGTH_SHORT).show();
}
}
});
fn_permission();
}
private void fn_permission() {
if ((ContextCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)) {
if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION))) {
} else {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION
},
REQUEST_PERMISSIONS);
}
} else {
boolean_permission = true;
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case REQUEST_PERMISSIONS: {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
boolean_permission = true;
} else {
Toast.makeText(getApplicationContext(), "Please allow the permission", Toast.LENGTH_LONG).show();
}
}
}
}
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
latitude = Double.valueOf(intent.getStringExtra("latutide"));
longitude = Double.valueOf(intent.getStringExtra("longitude"));
List<Address> addresses = null;
try {
addresses = geocoder.getFromLocation(latitude, longitude, 1);
String cityName = addresses.get(0).getAddressLine(0);
String stateName = addresses.get(0).getAddressLine(1);
String countryName = addresses.get(0).getAddressLine(2);
tv_area.setText(addresses.get(0).getAdminArea());
tv_locality.setText(stateName);
tv_address.setText(countryName);
} catch (IOException e1) {
e1.printStackTrace();
}
tv_latitude.setText(latitude+"");
tv_longitude.setText(longitude+"");
tv_address.getText();
}
};
@Override
protected void onResume() {
super.onResume();
registerReceiver(broadcastReceiver, new IntentFilter(GoogleService.str_receiver));
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(broadcastReceiver);
}
}
GoogleService.java
谷歌服务.java
package servicetutorial.service;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.util.Log;
import java.util.Timer;
import java.util.TimerTask;
/**
* Created by deepshikha on 24/11/16. */
* 由 deepshikha 于 16 年 11 月 24 日创建。*/
public class GoogleService extends Service implements LocationListener{
boolean isGPSEnable = false;
boolean isNetworkEnable = false;
double latitude,longitude;
LocationManager locationManager;
Location location;
private Handler mHandler = new Handler();
private Timer mTimer = null;
long notify_interval = 1000;
public static String str_receiver = "servicetutorial.service.receiver";
Intent intent;
public GoogleService() {
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
mTimer = new Timer();
mTimer.schedule(new TimerTaskToGetLocation(),5,notify_interval);
intent = new Intent(str_receiver);
}
@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) {
}
private void fn_getlocation(){
locationManager = (LocationManager)getApplicationContext().getSystemService(LOCATION_SERVICE);
isGPSEnable = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnable = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnable && !isNetworkEnable){
}else {
if (isNetworkEnable){
location = null;
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,1000,0,this);
if (locationManager!=null){
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location!=null){
Log.e("latitude",location.getLatitude()+"");
Log.e("longitude",location.getLongitude()+"");
latitude = location.getLatitude();
longitude = location.getLongitude();
fn_update(location);
}
}
}
if (isGPSEnable){
location = null;
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1000,0,this);
if (locationManager!=null){
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location!=null){
Log.e("latitude",location.getLatitude()+"");
Log.e("longitude",location.getLongitude()+"");
latitude = location.getLatitude();
longitude = location.getLongitude();
fn_update(location);
}
}
}
}
}
private class TimerTaskToGetLocation extends TimerTask{
@Override
public void run() {
mHandler.post(new Runnable() {
@Override
public void run() {
fn_getlocation();
}
});
}
}
private void fn_update(Location location){
intent.putExtra("latutide",location.getLatitude()+"");
intent.putExtra("longitude",location.getLongitude()+"");
sendBroadcast(intent);
}
}
回答by mahmoud zaher
i have found very simple and smooth solution : follow this steps to get your current location , it's very easydon't worry i have testedit and working perfectly
我发现非常简单和顺利的解决方案：按照这个步骤来让你的当前位置，它很容易别担心，我已经测试了它和工作完美
- Add dependency in build.gradle
- 在 build.gradle 添加依赖
implementation "com.google.android.gms:play-services-location:15.0.1"
实现“com.google.android.gms:play-services-location:15.0.1”
Add those 2 permissions in manifest file
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>Add this snipt to your class MainActivity:
public class MainActivity extends Activity implements LocationListener{
LocationManager locationManager; String provider; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { // Check Permissions Now ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, 0); } // Getting LocationManager object statusCheck(); locationManager = (LocationManager) getSystemService( Context.LOCATION_SERVICE); // Creating an empty criteria object Criteria criteria = new Criteria(); // Getting the name of the provider that meets the criteria provider = locationManager.getBestProvider(criteria, false); if (provider != null && !provider.equals("")) { if (!provider.contains("gps")) { // if gps is disabled final Intent poke = new Intent(); poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider"); poke.addCategory(Intent.CATEGORY_ALTERNATIVE); poke.setData(Uri.parse("3")); sendBroadcast(poke); } // Get the location from the given provider Location location = locationManager .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); locationManager.requestLocationUpdates( LocationManager.NETWORK_PROVIDER, 500, 0, this); if (location != null) onLocationChanged(location); else location = locationManager.getLastKnownLocation(provider); if (location != null) onLocationChanged(location); else Toast.makeText(getBaseContext(), "Location can't be retrieved", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getBaseContext(), "No Provider Found", Toast.LENGTH_SHORT).show(); } } public void statusCheck() { final LocationManager manager = (LocationManager) getSystemService( Context.LOCATION_SERVICE); if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) { buildAlertMessageNoGps(); } } private void buildAlertMessageNoGps() { final AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage( "Your GPS seems to be disabled, do you want to enable it?") .setCancelable(false).setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog, final int id) { startActivity(new Intent( android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS)); } }) .setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog, final int id) { dialog.cancel(); } }); final AlertDialog alert = builder.create(); alert.show(); } @Override public boolean onCreateOptionsMenu(Menu menu) { /* getMenuInflater().inflate(R.menu.activity_main, menu); */ return true; } @Override public void onLocationChanged(Location location) { // Getting reference to TextView tv_longitude TextView tvLongitude = (TextView) findViewById(R.id.tv_longitude); // Getting reference to TextView tv_latitude TextView tvLatitude = (TextView) findViewById(R.id.tv_latitude); // Setting Current Longitude tvLongitude.setText("Longitude:" + location.getLongitude()); // Setting Current Latitude tvLatitude.setText("Latitude:" + location.getLatitude()); } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { // Check Permissions Now ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, 0); } } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub }}
Add this to your activity_main.xml
<TextView android:id="@+id/tv_location" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:text="current location" android:textStyle="bold" /> <TextView android:id="@+id/tv_longitude" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/tv_location" android:layout_centerHorizontal="true" /> <TextView android:id="@+id/tv_latitude" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/tv_longitude" android:layout_centerHorizontal="true" />
在清单文件中添加这 2 个权限
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>将此片段添加到您的类 MainActivity 中：
公共类 MainActivity 扩展 Activity实现 LocationListener{
LocationManager locationManager; String provider; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { // Check Permissions Now ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, 0); } // Getting LocationManager object statusCheck(); locationManager = (LocationManager) getSystemService( Context.LOCATION_SERVICE); // Creating an empty criteria object Criteria criteria = new Criteria(); // Getting the name of the provider that meets the criteria provider = locationManager.getBestProvider(criteria, false); if (provider != null && !provider.equals("")) { if (!provider.contains("gps")) { // if gps is disabled final Intent poke = new Intent(); poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider"); poke.addCategory(Intent.CATEGORY_ALTERNATIVE); poke.setData(Uri.parse("3")); sendBroadcast(poke); } // Get the location from the given provider Location location = locationManager .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); locationManager.requestLocationUpdates( LocationManager.NETWORK_PROVIDER, 500, 0, this); if (location != null) onLocationChanged(location); else location = locationManager.getLastKnownLocation(provider); if (location != null) onLocationChanged(location); else Toast.makeText(getBaseContext(), "Location can't be retrieved", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getBaseContext(), "No Provider Found", Toast.LENGTH_SHORT).show(); } } public void statusCheck() { final LocationManager manager = (LocationManager) getSystemService( Context.LOCATION_SERVICE); if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) { buildAlertMessageNoGps(); } } private void buildAlertMessageNoGps() { final AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage( "Your GPS seems to be disabled, do you want to enable it?") .setCancelable(false).setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog, final int id) { startActivity(new Intent( android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS)); } }) .setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog, final int id) { dialog.cancel(); } }); final AlertDialog alert = builder.create(); alert.show(); } @Override public boolean onCreateOptionsMenu(Menu menu) { /* getMenuInflater().inflate(R.menu.activity_main, menu); */ return true; } @Override public void onLocationChanged(Location location) { // Getting reference to TextView tv_longitude TextView tvLongitude = (TextView) findViewById(R.id.tv_longitude); // Getting reference to TextView tv_latitude TextView tvLatitude = (TextView) findViewById(R.id.tv_latitude); // Setting Current Longitude tvLongitude.setText("Longitude:" + location.getLongitude()); // Setting Current Latitude tvLatitude.setText("Latitude:" + location.getLatitude()); } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { // Check Permissions Now ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, 0); } } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub }}
将此添加到您的 activity_main.xml
<TextView android:id="@+id/tv_location" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:text="current location" android:textStyle="bold" /> <TextView android:id="@+id/tv_longitude" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/tv_location" android:layout_centerHorizontal="true" /> <TextView android:id="@+id/tv_latitude" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/tv_longitude" android:layout_centerHorizontal="true" />
