How to get current location in Android
Solution 1
First you need to define a LocationListener
to handle location changes.
int LOCATION_REFRESH_TIME = 15000; // 15 seconds to update
int LOCATION_REFRESH_DISTANCE = 500; // 500 meters to update
....
private final LocationListener mLocationListener = new LocationListener() {
@Override
public void onLocationChanged(final Location location) {
//your code here
}
};
Then get the LocationManager
and ask for location updates
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mLocationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, LOCATION_REFRESH_TIME,
LOCATION_REFRESH_DISTANCE, mLocationListener);
}
And finally make sure that you have added the permission on the Manifest,
For using only network based location use this one
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
For GPS based location, this one
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
Solution 2
You need to write code in the OnLocationChanged method, because this method is called when the location has changed. I.e. you need to save the new location to return it if getLocation is called.
If you don't use the onLocationChanged it always will be the old location.
Solution 3
I'm using this tutorial and it works nicely for my application.
In my activity I put this code:
GPSTracker tracker = new GPSTracker(this);
if (!tracker.canGetLocation()) {
tracker.showSettingsAlert();
} else {
latitude = tracker.getLatitude();
longitude = tracker.getLongitude();
}
also check if your emulator runs with Google API
Boris Pawlowski
Updated on January 16, 2022Comments
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Boris Pawlowski over 2 years
I'm having troubles of getting my current position coordinates using the NETWORK provider of android location system.
Already read a lot of tutorials and implemented 4 or 5 existing classes to my project and all of them are giving me the last coordinates but not the current ones.
I'm pretty sure that the problem is something fundamental that I am missing but I am not able to understand what exactly it is.
Codes I'm using now:
This is my main Activity
package com.example.locationtests; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.widget.TextView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); GPSTracker mGPS = new GPSTracker(this); TextView text = (TextView) findViewById(R.id.texts); if(mGPS.canGetLocation ){ mGPS.getLocation(); text.setText("Lat"+mGPS.getLatitude()+"Lon"+mGPS.getLongitude()); }else{ text.setText("Unabletofind"); System.out.println("Unable"); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }
This is the class I'm using for Tracking:
package com.example.locationtests; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.provider.Settings; import android.util.Log; public final class GPSTracker implements LocationListener { private final Context mContext; // flag for GPS status public 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 = 1; // 10 meters // The minimum time between updates in milliseconds private static final long MIN_TIME_BW_UPDATES = 1; // 1 minute // Declaring a Location Manager protected LocationManager locationManager; public GPSTracker(Context context) { this.mContext = context; getLocation(); } /** * Function to get the user's current location * * @return */ public Location getLocation() { try { locationManager = (LocationManager) mContext .getSystemService(Context.LOCATION_SERVICE); // getting GPS status isGPSEnabled = locationManager .isProviderEnabled(LocationManager.GPS_PROVIDER); Log.v("isGPSEnabled", "=" + isGPSEnabled); // getting network status isNetworkEnabled = locationManager .isProviderEnabled(LocationManager.NETWORK_PROVIDER); Log.v("isNetworkEnabled", "=" + isNetworkEnabled); if (isGPSEnabled == false && isNetworkEnabled == false) { // no network provider is enabled } else { this.canGetLocation = true; if (isNetworkEnabled) { location=null; 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) { location=null; 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) { } }
This is my AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.locationtests" android:versionCode="1" android:versionName="1.0" > <uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.INTERNET"></uses-permission> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.VIBRATE" /> <uses-feature android:name="android.hardware.camera" /> <uses-feature android:name="android.hardware.location" android:required="true" /> <uses-feature android:name="android.hardware.location.gps" android:required="false" /> <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="com.example.locationtests.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
Actually GPS positioning works fine, but NETWORK positioning dosn't. When Ive turned devices GPS on coordinates keep changing while i'm moving, but the same doesn't happen when I have turn it off and relay on the NETWORK_PROVIDER
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Boris Pawlowski almost 11 yearsAcctualy GPS possitioning works fine, but NETWORK positioning dosn't. When Ive turned devices GPS on cordinates keep changing while im moving, but dosnt happence same when I have turn it off
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Axxiss almost 11 yearsKeep in mind that, the precision between GPS and NETWORK based location is really big. Yesterday I was testing in it, while moving on the bus, the GPS gave an accuracy of 3-5 meters and the NETWORK like 1Km. So get in a bus/car and and see the difference between those two.
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Amitsharma about 10 years@Axxiss how u get LOCATION_REFRESH_TIME, LOCATION_REFRESH_DISTANCE, mLocationListener);
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Axxiss about 10 years@amitsharma those are two constant defined by me. Here you can check the documentation developer.android.com/reference/android/location/…, float,android.location.Criteria, android.app.PendingIntent)
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Amitsharma about 10 years@Axxiss u have tell me before i have dun ,but i have get help from your code thank's Axxiss
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TechArcSri almost 10 yearswhat is GPSTracker here?
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pomber over 9 yearsflip the if pleassse
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drulabs over 9 yearswhat is the advantage of flipping the "if"?
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Sap over 9 years@KKD it's clearer to read and it's not a negative check.
if(canGetLocation()){}
sounds much better, doesn't it -
VipulKumar about 9 yearsNever us "true/false" in if statements. If implicitly mean "if it's true or false".
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fangzhzh over 7 years@VipulKumar Hi I came cross your answer and I felt that your answer is like paradox. It seems "never use true/false in if statement" is not correct, but still you get two upvotes. I know this answer is one year ago, but can you elaborate the answer in detail? Did I miss something about how to use if? Thanks
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VipulKumar over 7 yearsHi @fangzhzh, The statement was
tracker.canGetLocation() == false
when I commented. See edit history. It was edited to!tracker.canGetLocation()
, which is the right way to do it. You should use NOT operator rather than using "false". -
techDigi over 7 yearscan u tell me how can i implement the onLocationChanged in your code and further use there values
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Subhan Ali almost 7 years@Axxiss nice answer :)
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Ege Kuzubasioglu over 6 yearsYou may also need
@Override public void onStatusChanged(String provider, int status, Bundle extras) { } @Override public void onProviderEnabled(String provider) { } @Override public void onProviderDisabled(String provider) { }
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Si8 over 5 yearsWhat is the difference between network vs gps... which is more accurate? Thanks
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naturesenshi almost 5 yearsGod bless your soul @Axxiss
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sshanzel about 4 yearsWill this work while in the background?
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Admin almost 3 yearshow to set accuracy like
PRIORITY_HIGH_ACCURACY