如何在Android中以编程方式获取当前GPS位置？

我需要以编程方式使用GPS获取当前位置。我该如何实现？

我创建了一个带有逐步说明的小型应用程序，以获取当前位置的GPS坐标。

完整的示例源代码位于Android中的“ 获取当前位置”坐标中，“城市名称”中。

看看它怎么运作：

• 我们需要做的就是在清单文件中添加此权限：

  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

• 并创建一个LocationManager实例，如下所示：

  LocationManager locationManager = (LocationManager)
  getSystemService(Context.LOCATION_SERVICE);

• 检查是否启用了GPS。

• 然后实现LocationListener并获取坐标：

  LocationListener locationListener = new MyLocationListener();
  locationManager.requestLocationUpdates(
  LocationManager.GPS_PROVIDER, 5000, 10, locationListener);

• 这是这样做的示例代码

/*---------- Listener class to get coordinates ------------- */
private class MyLocationListener implements LocationListener {

    @Override
    public void onLocationChanged(Location loc) {
        editLocation.setText("");
        pb.setVisibility(View.INVISIBLE);
        Toast.makeText(
                getBaseContext(),
                "Location changed: Lat: " + loc.getLatitude() + " Lng: "
                    + loc.getLongitude(), Toast.LENGTH_SHORT).show();
        String longitude = "Longitude: " + loc.getLongitude();
        Log.v(TAG, longitude);
        String latitude = "Latitude: " + loc.getLatitude();
        Log.v(TAG, latitude);

        /*------- To get city name from coordinates -------- */
        String cityName = null;
        Geocoder gcd = new Geocoder(getBaseContext(), Locale.getDefault());
        List<Address> addresses;
        try {
            addresses = gcd.getFromLocation(loc.getLatitude(),
                    loc.getLongitude(), 1);
            if (addresses.size() > 0) {
                System.out.println(addresses.get(0).getLocality());
                cityName = addresses.get(0).getLocality();
            }
        }
        catch (IOException e) {
            e.printStackTrace();
        }
        String s = longitude + "\n" + latitude + "\n\nMy Current City is: "
            + cityName;
        editLocation.setText(s);
    }

    @Override
    public void onProviderDisabled(String provider) {}

    @Override
    public void onProviderEnabled(String provider) {}

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {}
}

这是其他答案的其他信息。

由于Android具有

GPS_PROVIDER and NETWORK_PROVIDER

您可以同时注册到这两者，并同时onLocationChanged(Location location)从两个事件开始获取事件。到目前为止，一切都很好。现在的问题是我们需要两个结果还是我们应该取得最好的结果。据我所知，GPS_PROVIDER结果具有比更好的准确性NETWORK_PROVIDER。

让我们定义Location字段：

private Location currentBestLocation = null;

在开始侦听位置更改之前，我们将实现以下方法。此方法返回GPS与网络之间的最后一个已知位置。对于这种方法，最好是新的。

/**
 * @return the last know best location
 */
private Location getLastBestLocation() {
    Location locationGPS = mLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
    Location locationNet = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

    long GPSLocationTime = 0;
    if (null != locationGPS) { GPSLocationTime = locationGPS.getTime(); }

    long NetLocationTime = 0;

    if (null != locationNet) {
        NetLocationTime = locationNet.getTime();
    }

    if ( 0 < GPSLocationTime - NetLocationTime ) {
        return locationGPS;
    }
    else {
        return locationNet;
    }
}

每次检索新位置时，我们都会将其与以前的结果进行比较。

...
static final int TWO_MINUTES = 1000 * 60 * 2;
...

我将新方法添加到onLocationChanged：

@Override
public void onLocationChanged(Location location) {

    makeUseOfNewLocation(location);

    if(currentBestLocation == null){
        currentBestLocation = location;
    }

    ....
}


/**
 * This method modify the last know good location according to the arguments.
 *
 * @param location The possible new location.
 */
void makeUseOfNewLocation(Location location) {
    if ( isBetterLocation(location, currentBestLocation) ) {
        currentBestLocation = location;
    }
}

....

/** Determines whether one location reading is better than the current location fix
 * @param location  The new location that you want to evaluate
 * @param currentBestLocation  The current location fix, to which you want to compare the new one.
 */
protected boolean isBetterLocation(Location location, Location currentBestLocation) {
    if (currentBestLocation == null) {
        // A new location is always better than no location
        return true;
    }

    // Check whether the new location fix is newer or older
    long timeDelta = location.getTime() - currentBestLocation.getTime();
    boolean isSignificantlyNewer = timeDelta > TWO_MINUTES;
    boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES;
    boolean isNewer = timeDelta > 0;

    // If it's been more than two minutes since the current location, use the new location,
    // because the user has likely moved.
    if (isSignificantlyNewer) {
        return true;
        // If the new location is more than two minutes older, it must be worse.
    } else if (isSignificantlyOlder) {
        return false;
    }

    // Check whether the new location fix is more or less accurate
    int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy());
    boolean isLessAccurate = accuracyDelta > 0;
    boolean isMoreAccurate = accuracyDelta < 0;
    boolean isSignificantlyLessAccurate = accuracyDelta > 200;

    // Check if the old and new location are from the same provider
    boolean isFromSameProvider = isSameProvider(location.getProvider(),
                                                currentBestLocation.getProvider());

    // Determine location quality using a combination of timeliness and accuracy
    if (isMoreAccurate) {
        return true;
    } else if (isNewer && !isLessAccurate) {
        return true;
    } else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
        return true;
    }
    return false;
}

// Checks whether two providers are the same
private boolean isSameProvider(String provider1, String provider2) {
    if (provider1 == null) {
        return provider2 == null;
    }
    return provider1.equals(provider2);
}

....

您可以通过找到位置GPS_PROVIDER or NETWORK_PROVIDER。

Android中的位置服务概述。

这是一个尝试使用GPS查找位置的示例。如果您的GPS不可用，请尝试使用网络查找位置。

GPSTracker.java

 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 latitude/longitude 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/Wi-Fi enabled
     * @return boolean
     * */
    public boolean canGetLocation() {
        return this.canGetLocation;
    }


    /**
     * Function to show settings alert dialog.
     * On pressing the Settings button it will launch 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 the 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 the 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;
    }
}

活动-AndroidGPSTrackingActivity.java

    public class AndroidGPSTrackingActivity extends Activity {

    Button btnShowLocation;

    // GPSTracker class
    GPSTracker gps;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        btnShowLocation = (Button) findViewById(R.id.btnShowLocation);

        // Show location button click event
        btnShowLocation.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // Create class object
                gps = new GPSTracker(AndroidGPSTrackingActivity.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();
                }
            }
        });
    }
}

布局-main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button android:id="@+id/btnShowLocation"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Show Location"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"/>
</RelativeLayout>

AndroidManifest.xml

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />

那里已经有很多答案，但是我想展示使用Google API获取位置信息的最新方法，因此新程序员可以使用新方法：

我已经在我的博客demonuts.com上针对android的当前位置编写了详细的教程。您还可以找到使用android studio开发的完整源代码。

首先，将其放入gradle文件中

 compile 'com.google.android.gms:play-services:9.0.2'

然后实现必要的接口

public class MainActivity  extends BaseActivitiy implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener

声明实例

  private GoogleApiClient mGoogleApiClient;
  private Location mLocation;
  private LocationManager locationManager;
  private LocationRequest mLocationRequest;

放进去 onCreate()

 mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

最后，覆盖必要的方法

 @Override
    public void onConnected(Bundle bundle) {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        } startLocationUpdates();
        mLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
        if(mLocation == null){
            startLocationUpdates();
        }
        if (mLocation != null) {
            double latitude = mLocation.getLatitude();
            double longitude = mLocation.getLongitude();
        } else {
            // Toast.makeText(this, "Location not Detected", Toast.LENGTH_SHORT).show();
        }
    }

    protected void startLocationUpdates() {
        // Create the location request
        mLocationRequest = LocationRequest.create()
                .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
                .setInterval(UPDATE_INTERVAL)
                .setFastestInterval(FASTEST_INTERVAL);
        // Request location updates
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,
                mLocationRequest, this);
        Log.d("reque", "--->>>>");
    }

    @Override
    public void onConnectionSuspended(int i) {
        Log.i(TAG, "Connection Suspended");
        mGoogleApiClient.connect();
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Log.i(TAG, "Connection failed. Error: " + connectionResult.getErrorCode());
    }

    @Override
    public void onStart() {
        super.onStart();
        mGoogleApiClient.connect();
    }

    @Override
    public void onStop() {
        super.onStop();
        if (mGoogleApiClient.isConnected()) {
            mGoogleApiClient.disconnect();
        }
    }
    @Override
    public void onLocationChanged(Location location) {

    }

在运行应用程序之前，请不要忘记在设备中启动GPS。

由于我不喜欢其他答案中的某些代码，因此这是我的简单解决方案。此解决方案旨在在活动或服务中用于跟踪位置。它确保除非您明确请求过时的数据，否则它绝不会返回过时的数据。它可以在回调模式下运行以在收到更新时获取更新，也可以在轮询模式下运行以轮询最新信息。

通用LocationTracker界面。使我们可以使用多种类型的位置跟踪器，并轻松插入相应的位置跟踪器：

package com.gabesechan.android.reusable.location;

import android.location.Location;

public interface LocationTracker {
    public interface LocationUpdateListener{
        public void onUpdate(Location oldLoc, long oldTime, Location newLoc, long newTime);
    }

    public void start();
    public void start(LocationUpdateListener update);

    public void stop();

    public boolean hasLocation();

    public boolean hasPossiblyStaleLocation();

    public Location getLocation();

    public Location getPossiblyStaleLocation();

}

ProviderLocationTracker-此类将跟踪GPS或网络的位置。

package com.gabesechan.android.reusable.location;

import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;

public class ProviderLocationTracker implements LocationListener, LocationTracker {

    // The minimum distance to change Updates in meters
    private static final long MIN_UPDATE_DISTANCE = 10; 

    // The minimum time between updates in milliseconds
    private static final long MIN_UPDATE_TIME = 1000 * 60; 

    private LocationManager lm;

    public enum ProviderType{
        NETWORK,
        GPS
    };    
    private String provider;

    private Location lastLocation;
    private long lastTime;

    private boolean isRunning;

    private LocationUpdateListener listener;

    public ProviderLocationTracker(Context context, ProviderType type) {
        lm = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
        if(type == ProviderType.NETWORK){
            provider = LocationManager.NETWORK_PROVIDER;
        }
        else{
            provider = LocationManager.GPS_PROVIDER;
        }
    }

    public void start(){
        if(isRunning){
            //Already running, do nothing
            return;
        }

        //The provider is on, so start getting updates.  Update current location
        isRunning = true;
        lm.requestLocationUpdates(provider, MIN_UPDATE_TIME, MIN_UPDATE_DISTANCE, this);
        lastLocation = null;
        lastTime = 0;
        return;
    }

    public void start(LocationUpdateListener update) {
        start();
        listener = update;

    }


    public void stop(){
        if(isRunning){
            lm.removeUpdates(this);
            isRunning = false;
            listener = null;
        }
    }

    public boolean hasLocation(){
        if(lastLocation == null){
            return false;
        }
        if(System.currentTimeMillis() - lastTime > 5 * MIN_UPDATE_TIME){
            return false; //stale
        }
        return true;
    }

    public boolean hasPossiblyStaleLocation(){
        if(lastLocation != null){
            return true;
        }
        return lm.getLastKnownLocation(provider)!= null;
    }

    public Location getLocation(){
        if(lastLocation == null){
            return null;
        }
        if(System.currentTimeMillis() - lastTime > 5 * MIN_UPDATE_TIME){
            return null; //stale
        }
        return lastLocation;
    }

    public Location getPossiblyStaleLocation(){
        if(lastLocation != null){
            return lastLocation;
        }
        return lm.getLastKnownLocation(provider);
    }

    public void onLocationChanged(Location newLoc) {
        long now = System.currentTimeMillis();
        if(listener != null){
            listener.onUpdate(lastLocation, lastTime, newLoc, now);
        }
        lastLocation = newLoc;
        lastTime = now;
    }

    public void onProviderDisabled(String arg0) {

    }

    public void onProviderEnabled(String arg0) {

    }

    public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
    }
}

它是FallbackLocationTracker，它将通过GPS和NETWORK进行跟踪，并使用更准确的位置。

package com.gabesechan.android.reusable.location;

import android.content.Context;
import android.location.Location;
import android.location.LocationManager;

public class FallbackLocationTracker  implements LocationTracker, LocationTracker.LocationUpdateListener {


    private boolean isRunning;

    private ProviderLocationTracker gps;
    private ProviderLocationTracker net;

    private LocationUpdateListener listener;

    Location lastLoc;
    long lastTime;

    public FallbackLocationTracker(Context context) {
        gps = new ProviderLocationTracker(context, ProviderLocationTracker.ProviderType.GPS);
        net = new ProviderLocationTracker(context, ProviderLocationTracker.ProviderType.NETWORK);
    }

    public void start(){
        if(isRunning){
            //Already running, do nothing
            return;
        }

        //Start both
        gps.start(this);
        net.start(this);
        isRunning = true;
    }

    public void start(LocationUpdateListener update) {
        start();
        listener = update;
    }


    public void stop(){
        if(isRunning){
            gps.stop();
            net.stop();
            isRunning = false;
            listener = null;
        }
    }

    public boolean hasLocation(){
        //If either has a location, use it
        return gps.hasLocation() || net.hasLocation();
    }

    public boolean hasPossiblyStaleLocation(){
        //If either has a location, use it
        return gps.hasPossiblyStaleLocation() || net.hasPossiblyStaleLocation();
    }

    public Location getLocation(){
        Location ret = gps.getLocation();
        if(ret == null){
            ret = net.getLocation();
        }
        return ret;
    }

    public Location getPossiblyStaleLocation(){
        Location ret = gps.getPossiblyStaleLocation();
        if(ret == null){
            ret = net.getPossiblyStaleLocation();
        }
        return ret;
    }

    public void onUpdate(Location oldLoc, long oldTime, Location newLoc, long newTime) {
        boolean update = false;

        //We should update only if there is no last location, the provider is the same, or the provider is more accurate, or the old location is stale
        if(lastLoc == null){
            update = true;
        }
        else if(lastLoc != null && lastLoc.getProvider().equals(newLoc.getProvider())){
            update = true;
        }
        else if(newLoc.getProvider().equals(LocationManager.GPS_PROVIDER)){
            update = true;
        }
        else if (newTime - lastTime > 5 * 60 * 1000){
            update = true;
        }

        if(update){
            if(listener != null){
                listener.onUpdate(lastLoc, lastTime, newLoc, newTime);                  
            }
            lastLoc = newLoc;
            lastTime = newTime;
        }

    }
}

由于两者都实现了LocationTracker界面，因此您可以轻松地决定使用哪个界面。要以轮询模式运行该类，只需调用start（）。要在更新模式下运行它，请调用start（Listener）。

还可以看看我的博客文章中的代码

通过-获取GPS的位置

LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

LocationListener locationListener = new LocationListener() 
{

            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onProviderEnabled(String provider) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onProviderDisabled(String provider) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onLocationChanged(Location location) {
                // TODO Auto-generated method stub
                double latitude = location.getLatitude();
                double longitude = location.getLongitude();
                double speed = location.getSpeed(); //spedd in meter/minute
                speed = (speed*3600)/1000;      // speed in km/minute               Toast.makeText(GraphViews.this, "Current speed:" + location.getSpeed(),Toast.LENGTH_SHORT).show();
            }
        };

        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);

}

您需要使用最新/最新

GoogleApiClient Api

基本上，您需要做的是：

private GoogleApiClient mGoogleApiClient;
mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();

然后

@Override
    public void onConnected(Bundle connectionHint) {
        mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
                mGoogleApiClient);
        if (mLastLocation != null) {
            mLatitudeText.setText(String.valueOf(mLastLocation.getLatitude()));
            mLongitudeText.setText(String.valueOf(mLastLocation.getLongitude()));
        }
    }

以获得最准确，最可靠的位置。在这里查看我的帖子：

https://stackoverflow.com/a/33599228/2644905

请勿使用不正确且响应延迟的LocationListener。老实说，这更容易实现。另请阅读文档：https : //developers.google.com/android/reference/com/google/android/gms/common/api/GoogleApiClient

class MyLocation {
    Timer timer1;
    LocationManager lm;
    LocationResult locationResult;
    boolean gps_enabled = false;
    boolean network_enabled = false;

    public boolean getLocation(Context context, LocationResult result) {
        // I use LocationResult callback class to pass location value from
        // MyLocation to user code.
        locationResult = result;
        if (lm == null)
            lm = (LocationManager) context
                    .getSystemService(Context.LOCATION_SERVICE);

        // Exceptions will be thrown if the provider is not permitted.
        try {
            gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
        }
        catch (Exception ex) {
        }
        try {
            network_enabled = lm
                    .isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        }
        catch (Exception ex) {
        }

        // Don't start listeners if no provider is enabled.
        if (!gps_enabled && !network_enabled)
            return false;

        if (gps_enabled)
            lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
                    locationListenerGps);
        if (network_enabled)
            lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0,
                    locationListenerNetwork);
        timer1 = new Timer();
        timer1.schedule(new GetLastLocation(), 5000);
        return true;
    }

    LocationListener locationListenerGps = new LocationListener() {
        public void onLocationChanged(Location location) {
            timer1.cancel();
            locationResult.gotLocation(location);
            lm.removeUpdates(this);
            lm.removeUpdates(locationListenerNetwork);
        }

        public void onProviderDisabled(String provider) {
        }

        public void onProviderEnabled(String provider) {
        }

        public void onStatusChanged(String provider, int status, Bundle extras) {
        }
    };

    LocationListener locationListenerNetwork = new LocationListener() {
        public void onLocationChanged(Location location) {
            timer1.cancel();
            locationResult.gotLocation(location);
            lm.removeUpdates(this);
            lm.removeUpdates(locationListenerGps);
        }

        public void onProviderDisabled(String provider) {
        }

        public void onProviderEnabled(String provider) {
        }

        public void onStatusChanged(String provider, int status, Bundle extras) {
        }
    };

    class GetLastLocation extends TimerTask {
        @Override
        public void run() {
            lm.removeUpdates(locationListenerGps);
            lm.removeUpdates(locationListenerNetwork);

            Location net_loc = null, gps_loc = null;
            if (gps_enabled)
                gps_loc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            if (network_enabled)
                net_loc = lm
                        .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

            // If there are both values, use the latest one.
            if (gps_loc != null && net_loc != null) {
                if (gps_loc.getTime() > net_loc.getTime())
                    locationResult.gotLocation(gps_loc);
                else
                    locationResult.gotLocation(net_loc);
                return;
            }

            if (gps_loc != null) {
                locationResult.gotLocation(gps_loc);
                return;
            }
            if (net_loc != null) {
                locationResult.gotLocation(net_loc);
                return;
            }
            locationResult.gotLocation(null);
        }
    }

    public static abstract class LocationResult {
        public abstract void gotLocation(Location location);
    }
}

我希望这能帮到您...

现在已经有了Google Play位置服务，我建议开发人员开始使用新的融合位置提供商。您会发现它更易于使用且更准确。请观看创建新的Google Play位置服务API的两个人观看的Google I / O视频，超越蓝点：Android Location中的新功能。

我一直在许多移动平台上使用位置API，并且我认为这两个家伙所做的确实具有革命性。它消除了使用各种提供程序的大量复杂性。Stack Overflow充满了关于使用哪个提供程序，是否使用最后一个已知位置，如何在LocationManager上设置其他属性等问题。他们建立的这个新API消除了大多数不确定性，并使位置服务成为一种乐趣。采用。

我已经编写了一个Android应用程序，该应用程序会使用Google Play定位服务定期获取位置，并将该位置发送到网络服务器，然后将其存储在数据库中并可以在Google Maps上查看。我已经编写了客户端软件（用于Android，iOS，Windows Phone和Java ME）和服务器软件（用于ASP.NET和SQL Server或PHP和MySQL）。该软件在每个平台上都以本机语言编写，并且可以在每个平台的后台正常运行。最后，该软件具有MIT许可证。您可以在此处找到Android客户端：

https://github.com/nickfox/GpsTracker/tree/master/phoneClients/android

最简单的你可以找到

   package com.javapapers.android.geolocationfinder;

    import android.os.Bundle;
    import android.app.Activity;
    import android.content.Context;
    import android.location.Location;
    import android.location.LocationListener;
    import android.location.LocationManager;
    import android.widget.TextView;

    import android.util.Log;

    public class MainActivity extends Activity implements LocationListener{
    protected LocationManager locationManager;
    protected LocationListener locationListener;
    protected Context context;
    TextView txtLat;
    String lat;
    String provider;
    protected String latitude,longitude; 
    protected boolean gps_enabled,network_enabled;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    txtLat = (TextView) findViewById(R.id.textview1);

    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
    }
    @Override
    public void onLocationChanged(Location location) {
    txtLat = (TextView) findViewById(R.id.textview1);
    txtLat.setText("Latitude:" + location.getLatitude() + ", Longitude:" + location.getLongitude());
    }

    @Override
    public void onProviderDisabled(String provider) {
    Log.d("Latitude","disable");
    }

    @Override
    public void onProviderEnabled(String provider) {
    Log.d("Latitude","enable");
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
    Log.d("Latitude","status");
    }
    }

LocationManager是一个类，提供了内置方法来获取最新的位置信息

步骤1：如下创建一个LocationManager对象

LocationManager locationManager =（LocationManager）context.getSystemService（Context.LOCATION_SERVICE）;

步骤2：添加条件

*Criteria is use for setting accuracy*

Criteria criteria = new Criteria();
int currentapiVersion = android.os.Build.VERSION.SDK_INT;

if (currentapiVersion >= android.os.Build.VERSION_CODES.HONEYCOMB) {

    criteria.setSpeedAccuracy(Criteria.ACCURACY_HIGH);
    criteria.setAccuracy(Criteria.ACCURACY_FINE);
    criteria.setAltitudeRequired(true);
    criteria.setBearingRequired(true);
    criteria.setSpeedRequired(true);

}

步骤3：获取可用的提供商

威胁是提供商GPS和网络的两种类型

 String provider = locationManager.getBestProvider(criteria, true);

步骤4：获取最后知道的位置

Location location = locationManager.getLastKnownLocation(provider);

步骤5：获取经度和纬度

如果location对象为null，则不要尝试调用以下方法 s

getLatitude and getLongitude is methods which returns double values

获取位置更新需要Android中大量的bolierplate代码，您需要注意

• Google Play服务可用性检查，
• 更新旧的或无法使用的Google Play服务
• 对话框创建GoogleApiClient及其回调已连接，已断开等。
• 停止和释放用于位置更新的资源
• 处理位置许可方案
• 检查位置服务是开还是关
• 获取最后的位置也不是那么容易
• 如果在一定时间后仍未找到位置，则回退到最后一个已知位置

为了简化所有这些步骤，我创建了Android-EasyLocation（小型android库），它将处理所有这些工作，您可以专注于业务逻辑。

您所需要做的就是扩展EasyLocationActivity，并且此

requestSingleLocationFix(easyLocationRequest);

要么

requestLocationUpdates(easyLocationRequest);

在https://github.com/akhgupta/Android-EasyLocation处签出示例应用程序和所需步骤

我做了一个项目，我们可以使用Google Play服务，GPS和网络提供商从中获得准确的位置。该项目可以在这里找到。

寻找最佳位置的策略是：如果找到位置，则首先从Google Play服务获取位置，然后检查天气情况是否好；如果找到的位置为null，则重新启动Google Play服务，并尝试从Android Location API获取位置。在更改侦听器上注册该位置，一旦找到更好的位置，则回调将其返回到主要活动。

仅使用我们需要嵌入的两个类即可在代码中使用和实现，这非常简单，即LocationManagerInterface和SmartLocationManager，LocationActivity它实现了接口并使用SmartLocationManager来获取位置。

/**
 * Created by Syed Raza Mehdi Naqvi on 8/10/2016.
 */
public interface LocationManagerInterface {
    String TAG = LocationManagerInterface.class.getSimpleName();

    void locationFetched(Location mLocation, Location oldLocation, String time, String locationProvider);

}

这是位置管理器类

import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;

import java.text.DateFormat;
import java.util.Date;

/**
 * Created by Syed Raza Mehdi Naqvi on 8/9/2016.
 */
public class SmartLocationManager implements
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {

    private static final String TAG = SmartLocationManager.class.getSimpleName();

    private static final int TWO_MINUTES = 1000 * 60 * 2;
    private static final int PERMISSION_REQUEST_CODE = 1000;
    private static final int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;

    // default value is false but user can change it
    private String mLastLocationUpdateTime;                                                         // fetched location time
    private String locationProvider;                                                                // source of fetched location

    private Location mLastLocationFetched;                                                          // location fetched
    private Location mLocationFetched;                                                              // location fetched
    private Location networkLocation;
    private Location gpsLocation;

    private int mLocationPiority;
    private long mLocationFetchInterval;
    private long mFastestLocationFetchInterval;

    private Context mContext;                                                                       // application context
    private Activity mActivity;                                                                     // activity context
    private LocationRequest mLocationRequest;
    private GoogleApiClient mGoogleApiClient;
    private LocationManagerInterface mLocationManagerInterface;

    private android.location.LocationManager locationManager;
    private android.location.LocationListener locationListener;

    boolean isGPSEnabled;
    boolean isNetworkEnabled;

    private int mProviderType;
    public static final int NETWORK_PROVIDER = 1;
    public static final int ALL_PROVIDERS = 0;
    public static final int GPS_PROVIDER = 2;

//    private final double STANDARD_LOCATION_ACCURACY = 100.0;
//    private final double STANDARD_LOCATION_SEED_LIMIT = 6.95;

    public static final int LOCATION_PROVIDER_ALL_RESTICTION = 1;
    public static final int LOCATION_PROVIDER_RESTRICTION_NONE = 0;
    public static final int LOCATION_PROVIDER_GPS_ONLY_RESTICTION = 2;
    public static final int LOCATION_PROVIDER_NETWORK_ONLY_RESTICTION = 3;
    private int mForceNetworkProviders = 0;

    public SmartLocationManager(Context context, Activity activity, LocationManagerInterface locationInterface, int providerType, int locationPiority, long locationFetchInterval, long fastestLocationFetchInterval, int forceNetworkProviders) {
        mContext = context;
        mActivity = activity;
        mProviderType = providerType;

        mLocationPiority = locationPiority;
        mForceNetworkProviders = forceNetworkProviders;
        mLocationFetchInterval = locationFetchInterval;
        mFastestLocationFetchInterval = fastestLocationFetchInterval;

        mLocationManagerInterface = locationInterface;

        initSmartLocationManager();
    }


    public void initSmartLocationManager() {

        // 1) ask for permission for Android 6 above to avoid crash
        // 2) check if gps is available
        // 3) get location using awesome strategy

        askLocationPermission();                            // for android version 6 above
        checkNetworkProviderEnable(mForceNetworkProviders);                       //

        if (isGooglePlayServicesAvailable())                // if googleplay services available
            initLocationObjts();                            // init obj for google play service and start fetching location
        else
            getLocationUsingAndroidAPI();                   // otherwise get location using Android API
    }

    private void initLocationObjts() {
        // Create the LocationRequest object
        mLocationRequest = LocationRequest.create()
                .setPriority(mLocationPiority)
                .setInterval(mLocationFetchInterval)                    // 10 seconds, in milliseconds
                .setFastestInterval(mFastestLocationFetchInterval);     // 1 second, in milliseconds

        if (mGoogleApiClient == null) {
            mGoogleApiClient = new GoogleApiClient.Builder(mActivity)
                    .addConnectionCallbacks(this)
                    .addOnConnectionFailedListener(this)
                    .addApi(LocationServices.API)
                    .build();
        }

        startLocationFetching();                                        // connect google play services to fetch location
    }

    @Override
    public void onConnected(Bundle connectionHint) {
        Location location = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
        startLocationUpdates();
        if (location == null) {
            LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
            getLocationUsingAndroidAPI();
        } else {
            setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
        }
    }

    @Override
    public void onLocationChanged(Location location) {
        if (location == null) {
            getLastKnownLocation();
        } else {
            setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
        }
    }

    @Override
    public void onConnectionSuspended(int i) {
        Log.i(TAG, "Connection suspended");
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        if (connectionResult.hasResolution()) {
            try {
                connectionResult.startResolutionForResult(mActivity, CONNECTION_FAILURE_RESOLUTION_REQUEST); // Start an Activity that tries to resolve the error
                getLocationUsingAndroidAPI();                                                                // try to get location using Android API locationManager
            } catch (IntentSender.SendIntentException e) {
                e.printStackTrace();
            }
        } else {
            Log.i(TAG, "Location services connection failed with code " + connectionResult.getErrorCode());
        }
    }

    private void setNewLocation(Location location, Location oldLocation) {
        if (location != null) {
            mLastLocationFetched = oldLocation;
            mLocationFetched = location;
            mLastLocationUpdateTime = DateFormat.getTimeInstance().format(new Date());
            locationProvider = location.getProvider();
            mLocationManagerInterface.locationFetched(location, mLastLocationFetched, mLastLocationUpdateTime, location.getProvider());
        }
    }

    private void getLocationUsingAndroidAPI() {
        // Acquire a reference to the system Location Manager
        locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);

        setLocationListner();
        captureLocation();
    }

    public void captureLocation() {
        if (Build.VERSION.SDK_INT >= 23 &&
                ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return;
        }
        try {
            if (mProviderType == SmartLocationManager.GPS_PROVIDER) {
                locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
            } else if (mProviderType == SmartLocationManager.NETWORK_PROVIDER) {
                locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
            } else {
                locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
                locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
            }
        } catch (Exception e) {
            Log.e(TAG, e.getMessage());
        }
    }

    private void setLocationListner() {
        // Define a listener that responds to location updates
        locationListener = new android.location.LocationListener() {
            public void onLocationChanged(Location location) {
                // Called when a new location is found by the network location provider.
                if (location == null) {
                    getLastKnownLocation();
                } else {
                    setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
//                    if (isLocationAccurate(location) && location.getAccuracy() < STANDARD_LOCATION_ACCURACY && location.getSpeed() < STANDARD_LOCATION_SEED_LIMIT) {// no use of this if
//                        setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
//                    } else {
//                        setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
//                    }
                }
            }

            public void onStatusChanged(String provider, int status, Bundle extras) {
            }

            public void onProviderEnabled(String provider) {
            }

            public void onProviderDisabled(String provider) {
            }
        };
    }

    public Location getAccurateLocation() {
        if (Build.VERSION.SDK_INT >= 23 &&
                ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return null;
        }
        try {
            gpsLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            networkLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
            Location newLocalGPS, newLocalNetwork;
            if (gpsLocation != null || networkLocation != null) {
                newLocalGPS = getBetterLocation(mLocationFetched, gpsLocation);
                newLocalNetwork = getBetterLocation(mLocationFetched, networkLocation);
                setNewLocation(getBetterLocation(newLocalGPS, newLocalNetwork), mLocationFetched);
            }
        } catch (Exception ex) {
            Log.e(TAG, ex.getMessage());
        }
        return mLocationFetched;
    }

    protected void startLocationUpdates() {
        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
    }

    public void startLocationFetching() {
        mGoogleApiClient.connect();
        if (mGoogleApiClient.isConnected()) {
            startLocationUpdates();
        }
    }

    public void pauseLocationFetching() {
        if (mGoogleApiClient.isConnected()) {
            LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
            mGoogleApiClient.disconnect();
        }

    }

    public void abortLocationFetching() {
        mGoogleApiClient.disconnect();

        // Remove the listener you previously added
        if (locationManager != null && locationListener != null) {
            if (Build.VERSION.SDK_INT >= 23 &&
                    ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                    ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                return;
            }
            try {
                locationManager.removeUpdates(locationListener);
                locationManager = null;
            } catch (Exception ex) {
                Log.e(TAG, ex.getMessage());

            }
        }
    }

    public void resetLocation() {
        mLocationFetched = null;
        mLastLocationFetched = null;
        networkLocation = null;
        gpsLocation = null;
    }

    //  Android M Permission check
    public void askLocationPermission() {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {


            if (ContextCompat.checkSelfPermission(mActivity, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED
                    || ContextCompat.checkSelfPermission(mActivity, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                    ) {
                if (ActivityCompat.shouldShowRequestPermissionRationale(mActivity, Manifest.permission.ACCESS_COARSE_LOCATION)
                        || ActivityCompat.shouldShowRequestPermissionRationale(mActivity, Manifest.permission.ACCESS_FINE_LOCATION)) {

                    final AlertDialog.Builder builder = new AlertDialog.Builder(mActivity);
                    builder.setMessage("Please allow all permissions in App Settings for additional functionality.")
                            .setCancelable(false)
                            .setPositiveButton("Allow", new DialogInterface.OnClickListener() {
                                public void onClick(@SuppressWarnings("unused") final DialogInterface dialog, @SuppressWarnings("unused") final int id) {
                                    Toast.makeText(mContext, "Welcome", Toast.LENGTH_SHORT).show();
                                }
                            })
                            .setNegativeButton("Deny", new DialogInterface.OnClickListener() {
                                public void onClick(final DialogInterface dialog, @SuppressWarnings("unused") final int id) {
                                    mActivity.finish();
                                }
                            });
                    final AlertDialog alert = builder.create();
                    alert.show();

                } else
                    ActivityCompat.requestPermissions(mActivity, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION
                            , Manifest.permission.ACCESS_FINE_LOCATION
                    }, PERMISSION_REQUEST_CODE);

            }
        }
    }

    public void checkNetworkProviderEnable(int enforceActive) {
        locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);

        isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if (!isGPSEnabled && !isNetworkEnabled) {
            buildAlertMessageTurnOnLocationProviders("Your location providers seems to be disabled, please enable it", "OK", "Cancel");
        } else if (!isGPSEnabled && mForceNetworkProviders == LOCATION_PROVIDER_GPS_ONLY_RESTICTION) {
            buildAlertMessageTurnOnLocationProviders("Your GPS seems to be disabled, please enable it", "OK", "Cancel");
        } else if (!isNetworkEnabled && mForceNetworkProviders == LOCATION_PROVIDER_NETWORK_ONLY_RESTICTION) {
            buildAlertMessageTurnOnLocationProviders("Your Network location provider seems to be disabled, please enable it", "OK", "Cancel");
        }
        // getting network status

        if (!isGPSEnabled && !isNetworkEnabled) {
            Toast.makeText(mContext, "Location can't be fetched!", Toast.LENGTH_SHORT).show(); // show alert
            mActivity.finish();
        }
    }

    private void buildAlertMessageTurnOnLocationProviders(String message, String positiveButtonText, String negativeButtonText) {
        final AlertDialog.Builder builder = new AlertDialog.Builder(mActivity);
        builder.setMessage(message)
                .setCancelable(false)
                .setPositiveButton(positiveButtonText, new DialogInterface.OnClickListener() {
                    public void onClick(@SuppressWarnings("unused") final DialogInterface dialog, @SuppressWarnings("unused") final int id) {
                        Intent mIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                        mIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                        mContext.startActivity(mIntent);
                    }
                })
                .setNegativeButton(negativeButtonText, new DialogInterface.OnClickListener() {
                    public void onClick(final DialogInterface dialog, @SuppressWarnings("unused") final int id) {
                        mActivity.finish();
                    }
                });
        final AlertDialog alert = builder.create();
        alert.show();
    }


    public Location getLastKnownLocation() {
        locationProvider = LocationManager.NETWORK_PROVIDER;
        Location lastKnownLocation = null;
        // Or use LocationManager.GPS_PROVIDER
        if (Build.VERSION.SDK_INT >= 23 &&
                ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return lastKnownLocation;
        }
        try {
            lastKnownLocation = locationManager.getLastKnownLocation(locationProvider);
            return lastKnownLocation;
        } catch (Exception e) {
            Log.e(TAG, e.getMessage());
        }
        return lastKnownLocation;
    }

    public boolean isGooglePlayServicesAvailable() {
        int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(mContext);

        if (status == ConnectionResult.SUCCESS) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * Determines whether one Location reading is better than the current Location fix
     *
     * @param location            The new Location that you want to evaluate
     * @param currentBestLocation The current Location fix, to which you want to compare the new one
     */
    protected Location getBetterLocation(Location location, Location currentBestLocation) {
        if (currentBestLocation == null) {
            // A new location is always better than no location
            return location;
        }

        // Check whether the new location fix is newer or older
        long timeDelta = location.getTime() - currentBestLocation.getTime();
        boolean isSignificantlyNewer = timeDelta > TWO_MINUTES;
        boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES;
        boolean isNewer = timeDelta > 0;

        // If it's been more than two minutes since the current location, use the new location
        // because the user has likely moved
        if (isSignificantlyNewer) {
            return location;
            // If the new location is more than two minutes older, it must be worse
        } else if (isSignificantlyOlder) {
            return currentBestLocation;
        }

        // Check whether the new location fix is more or less accurate
        int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy());
        boolean isLessAccurate = accuracyDelta > 0;
        boolean isMoreAccurate = accuracyDelta < 0;
        boolean isSignificantlyLessAccurate = accuracyDelta > 200;

        // Check if the old and new location are from the same provider
        boolean isFromSameProvider = isSameProvider(location.getProvider(),
                currentBestLocation.getProvider());

        // Determine location quality using a combination of timeliness and accuracy
        if (isMoreAccurate) {
            return location;
        } else if (isNewer && !isLessAccurate) {
            return location;
        } else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
            return location;
        }
        return currentBestLocation;
    }

    /**
     * Checks whether two providers are the same
     */

    private boolean isSameProvider(String provider1, String provider2) {
        if (provider1 == null) {
            return provider2 == null;
        }
        return provider1.equals(provider2);
    }

    public boolean isLocationAccurate(Location location) {
        if (location.hasAccuracy()) {
            return true;
        } else {
            return false;
        }
    }

    public Location getStaleLocation() {
        if (mLastLocationFetched != null) {
            return mLastLocationFetched;
        }
        if (Build.VERSION.SDK_INT >= 23 &&
                ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return null;
        }
        if (mProviderType == SmartLocationManager.GPS_PROVIDER) {
            return locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        } else if (mProviderType == SmartLocationManager.NETWORK_PROVIDER) {
            return locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
        } else {
            return getBetterLocation(locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER), locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER));
        }
    }
}