我有一个 Samsung Galaxy Tab A。我已经实现了 android.location.LocationListener 并且 onLocationChanged(Location location) 被调用，它给了我一个正确的经度和纬度但是，

问题是: location.getTime() 给了我错误的时间，它返回的时间接近 300000 百万左右。它应该类似于 1471243684497。

我不知道该怎么办。

GPSTracker类:​​

import java.io.IOException;
import java.util.List;
import java.util.Locale;

import android.app.Service;
import android.content.Context;
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.util.Log;

public class GPSTracker extends Service implements LocationListener
{
    //flag for GPS Status
    boolean isGPSEnabled = false;
    
    //flag for network status
    //boolean isNetworkEnabled = false;
    
    boolean canGetLocation = false;
    
    Location location;
    double latitude;
    double longitude;
    
    //The minimum distance to change updates in metters
    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; //10 metters
    
    //The minimum time beetwen updates in milliseconds
    private static final long MIN_TIME_BW_UPDATES = 1000 * 10; // 1 minute
    
    //Declaring a Location Manager
    protected LocationManager locationManager;
    
    /*public GPSTracker(Context context) 
    {
        this.mContext = context;
        getLocation();
    }*/
    
    public Location getLocation(Context ctx)
    {
        try
        {
            locationManager = (LocationManager) ctx.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;
    
                //First get location from Network Provider
               /* 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);
                        updateGPSCoordinates();
                    }
                }*/
    
                //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);
                            updateGPSCoordinates();
                        }
                    }
                }
            }
        }
        catch (Exception e)
        {
            //e.printStackTrace();
            Log.e("Error : Location", "Impossible to connect to LocationManager", e);
        }
    
        return location;
    }
    
    public void updateGPSCoordinates()
    {
        if (location != null)
        {
            latitude = location.getLatitude();
            longitude = location.getLongitude();
        }
    }
    
    /**
     * 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;
    }
    
    /**
     * Function to get longitude
     */
    public double getLongitude()
    {
        if (location != null)
        {
            longitude = location.getLongitude();
        }
    
        return longitude;
    }
    
    /**
     * Function to check GPS/wifi enabled
     */
    public boolean canGetLocation()
    {
        if(!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)/*&&
                !locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)*/){
            this.canGetLocation = false;
        } else {
            this.canGetLocation = true;
        }
        return this.canGetLocation;
    }
    
    /**
     * 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 
            {
                List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);
                return addresses;
            } 
            catch (IOException e) 
            {
                //e.printStackTrace();
                Log.e("Error : Geocoder", "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 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;
    }
}

还有我自己的扩展 GPSTracker 类的类:

public class NewMainService extends GPSTracker {
    

    @Override
    public void onLocationChanged(Location location) {
        long time = location.getTime();
        Log.i("TAG", "onLocationChanged time: "+time); //prints wrong timestamp
        super.onLocationChanged(location);
    }
}

编辑:

在其他设备上一切正常。

我用谷歌搜索了一下，它是某些设备中的错误。位置监听器在一段时间后停止接收更改。

它给我的时间就像设备的正常运行时间，是几个小时，而不是日期。

编辑 2: 现在我正在使用 com.google.android.gms.location.FusedLocationProviderClient 而 android.location.LocationManager 在 Android 10 上什至不再给我任何位置更新+

最佳答案

您可以使用 NMEA 位置监听器，并且只能从中获取时间。 它始终为真，并且采用 UTC 时间，即使您更改了设备的时区或日期和时间，这也始终会为您提供当前的真实日期和时间。

限制:

-if GPS or Location is off, you won't get NMEA. (you can check if Location is turned on or not)

-if Location is turned on but user has changed its accuracy to network only through the Settings, you won't get NMEA. (you can check if locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) )

关于Android onLocationChanged location.getTime() 返回错误的时间，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38950956/