Getting current location android что это

Get Current location using FusedLocationProviderClient in Android

Sep 4, 2018 · 4 min read

Hello to coders,

Previously we have taught you how you get current location using GPS/Network Provider. Then android has revealed FusedLocationProviderClient under GoogleApi. FusedLocationProviderClient is for interacting with the location using fused location provider.

( NOTE : To use this feature, GPS must be turned on your device. For manually ask the user to turn on GPS, please check next article)

So let’s get started for the tutorial for getting the current location.

First, add a dependency for location by play services:

Then define FusedLocationProviderClient:

Add permission in manifest.xml

Now ask for runtime permission for above android 6 OS devices

N o w, request for permission if not granted and get the result on onRequestPermissionsResult overridden method, check highlighted code below:

Here, when you allow using permission for an app, it will return to onRequestPermissionsResult method. And again get the last location and print location on textview.

Above code will work if an app has already granted the location permission

Here you can notice, why we put a condition that if(location!=null) before getting latitude-longitude. The location object may be null in the following situations:

• Location is turned off in the device settings. The result could be null even if the last location was previously retrieved because disabling location also clears the cache.
• The device never recorded its location, which could be the case of a new device or a device that has been restored to factory settings.
• Google Play services on the device have restarted, and there is no active Fused Location Provider client that has requested location after the services restarted. To avoid this situation you can create a new client and request location updates yourself.

Now if in case we can’t getting location then we have an option for request location updates. Location updates will give you continuous location at any specific time interval as per your request. Let’s move on location updates.

Here we definitely get the current location using this location updates. And once we get the location, we can also remove location continuous updates else you will get multiple locations updates. This will help you when you want to move the marker on the map as current location changes.

Now you can find some methods of location request like setPriority(), setInterval() and setFastestInterval().

• setPriority: The priority of the request is a strong hint to the LocationClient for which location sources to use. For example, PRIORITY_HIGH_ACCURACY is more likely to use GPS, and is more likely to use WIFI & Cell tower positioning, but it also depends on many other factors (such as which sources are available) and is implementation dependent.
• setInterval: Set the desired interval for active location updates, in milliseconds. The location client will actively try to obtain location updates for your application at this interval, so it has a direct influence on the amount of power used by your application. Choose your interval wisely.
• setFastestInterval: Explicitly set the fastest interval for location updates, in milliseconds. This controls the fastest rate at which your application will receive location updates, which might be faster than setInterval(long) in some situations (for example, if other applications are triggering location updates). This allows your application to passively acquire locations at a rate faster than it actively acquires locations, saving power.

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How to Get Current Location in Android?

As a developer when you work on locations in Android then you always have some doubts about selecting the best and efficient approach for your requirement. So in this article, we are going to discuss how to get the user’s current location in Android. There are two ways to get the current location of any Android device:

1. Android’s Location Manager API
2. Fused Location Provider: Google Play Services Location APIs

Question: Which one is efficient and why?

Answer: Fused Location Provider because it optimizes the device’s use of battery power.

Before moving any of the above methods we will have to take location permission.

Taking Location Permission

Step 1: Define uses permissions for location access in the manifest file

In order to receive location updates from NETWORK_PROVIDER or GPS_PROVIDER, you must request the user’s permission by declaring either the ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION permission, respectively, in your Android manifest file. Without these permissions, your application will fail at runtime when requesting location updates.

If you are using both NETWORK_PROVIDER and GPS_PROVIDER, then you need to request only the ACCESS_FINE_LOCATION permission, because it includes permission for both providers. Permission for ACCESS_COARSE_LOCATION allows access only to NETWORK_PROVIDER.

Step 2: Define uses permission for internet access because we are going to use Internet Provider.

Step 3: Write a function for checking that location permission is granted or not. If permission is not granted then ask for the permissions in run time.

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Get Current Location in Android

This android tutorial is to help learn location based service in android platform. Knowing the current location in an android mobile will pave the way for developing many innovative Android apps to solve peoples daily problem. For developing location aware application in android, it needs location providers. There are two types of location providers,

1. GPS Location Provider
2. Network Location Provider

Any one of the above providers is enough to get current location of the user or user’s device. But, it is recommended to use both providers as they both have different advantages. Because, GPS provider will take time to get location at indoor area. And, the Network Location Provider will not get location when the network connectivity is poor.

Network Location Provider vs GPS Location Provider

• Network Location provider is comparatively faster than the GPS provider in providing the location co-ordinates.
• GPS provider may be very very slow in in-door locations and will drain the mobile battery.
• Network location provider depends on the cell tower and will return our nearest tower location.
• GPS location provider, will give our location accurately.

Steps to get location in Android

1. Provide permissions in manifest file for receiving location update
2. Create LocationManager instance as reference to the location service
3. Request location from LocationManager
4. Receive location update from LocationListener on change of location

Provide permissions for receiving location update

To access current location information through location providers, we need to set permissions with android manifest file.

ACCESS_COARSE_LOCATION is used when we use network location provider for our Android app. But, ACCESS_FINE_LOCATION is providing permission for both providers. INTERNET permission is must for the use of network provider.

Create LocationManager instance as reference to the location service

For any background Android Service, we need to get reference for using it. Similarly, location service reference will be created using getSystemService() method. This reference will be added with the newly created LocationManager instance as follows.

Request current location from LocationManager

After creating the location service reference, location updates are requested using requestLocationUpdates() method of LocationManager. For this function, we need to send the type of location provider, number of seconds, distance and the LocationListener object over which the location to be updated.

Receive location update from LocationListener on change of location

LocationListener will be notified based on the distance interval specified or the number seconds.

Sample Android App: Current Location Finder

This example provides current location update using GPS provider. Entire Android app code is as follows,

XML files for layout and android manifest are as shown below

Android Output

Note: If you are running this Android app with emulator, you need to send the latitude and longitude explicitly for the emulator.

How to send latitude and longitude to android emulator

• Open DDMS perspective in Eclipse (Window -> Open Perspective)
• Select your emulator device
• Select the tab named emulator control
• In ‘Location Controls’ panel, ‘Manual’ tab, give the Longitude and Latitude as input and ‘Send’.

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Comments on «Get Current Location in Android»

nice tutorial sir………..

I am a java developer but not a Android developer. I would like to develop one simple contact save application in android. Could you please publish step by step development procedure for contact book application with sqlite db interaction.

What are all requirement to run anroid applicatio

Very nice article. Steps are nicely explained. Thank you Sir

Hi,
How can i scan barcodes in android application!

yes u can use barcode scan u will find source code for barcode scan check it in github repository once i used zxing(a barcode scanner Engine)

[…] we studied about how to get current geographic location using an android application. That Android app will return latitude and longitude pair to represent current location. Instead of […]

Does this app need any type of internet .

I run the above code.but only hello world is displayed.no location data.Please specify the code for activity main.xml to display the location

Simple and Efficient..

i am new to android ,i tried the same but when i run it shows me “unfortunately app has stopped working” please help me fix this.

Very nice tutorial.Please tell me how can we use these coordinates to locate this position in the map .thank you

First you need to display the map fragment (https://javapapers.com/android/show-map-in-android/), then you need to tile these coordinates on top of it by using location service / activity.

I will post a tutorial for this exact topic very soon.

hi.
its working fine when im using emulator,but it is showing nothing when im uing it in my phone.
just hello world is outputed on the screen.

Hi,
How can i get output in phone instead of emulator because it works in emulator.

i am new to android ,i tried the same but when i run it shows me “unfortunately app has stopped working” please help me fix this

thanks alot for helping by this tutorial..
can u tell me hopw to find the direction and KMS using android google maps

I’m new to android as well and was getting the same error. What solved it was that I tried it on device and not the emulator. The emulator kept giving me error even after sending values through DDMS.

second mistake i made was i changed the name of the package and forgot to change the names in manifest. Just make sure you are not doing the same.

Worked instantly.. Thanks for the tutorial..

how to get date and time from internet in android

Very good tutorial …

Hi,
The latitude and longitude is shown, can you add the direction to the latitude and longitude like

Latitude 37.42 North
Longitude 122.56 East

Because i needed this for astrology app

Thanks Joe,for the post and for GPS Location Provider is works perfectly.

how to develop a music player stand alone application in java……?

very good tutorial…thanks sir

its working fine in emulator kindly intimate how to display in tab

Have you posted any tutorial for network based on network location service yet?

Please give URL,

very simple dear
1-install eclipse.
2-After debug the program u will the .apk file
inside Bin folder.
3-Copy the .apk file and put inside ur mobile and run it…

dear Joe when i install apk file in Phone only
hello world message is display not lat n long find

i an new in android apps please help and suggest how to call .NET web service in this with post and get method

I think you are testing code by emulator. If yes, you need to set lattitude and longtitude manually. Its also said by author at the end of this tutorial. Please look at that and then try. Its running good for me.

great job amazing work simple easy yet effective

Nice one.
But This one is not working inside the room.we need the display the current location using network provider.

Thanks, great tutorial, best i found and works like a charm.
Can you publish one explaning GoogleMaps ?

hi , i manually added langitute and logitute .but nothing showing on my emulator..
it says only
latitute=Location not available
longitude=Location not available

This code is not working inside the room.we need the display the current location using network provider.

Great tutorial. I keep having the same problem with certain apps I write – in that they work on the emulator, but give an error on my cell phone.

App starts up then suddenly gives the message “Unfortunately, GPSapp has stopped”

Any ideas would be greatly appreciated

Galaxy S4 cell, 4.2.2

Apologies – I see this question has been raised a few times before. I have tried the suggestions above (eg make sure package name is same in program and manifest etc) but still no joy. Thanks Bryn

There can be numerous reasons to a crash. Best way to find the reason is to get the LogCat logs when it crashes. Plug the phone in USB and set it as target device. Then launch the app in phone and you can get the logs on this error.

all are incredible !

For anyone who shows “Hello World” on the mobile phone instead current location change MainActivity.java to following:

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;

public class MainActivity extends Activity implements LocationListener <
// 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
protected LocationManager locationManager;
protected Context context;
protected boolean gps_enabled, network_enabled;
TextView txtLat;

@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);
// getting GPS status
gps_enabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
network_enabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

if (gps_enabled) <
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
> else if (network_enabled) <
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, 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”);
>
>

In my code, onLocationChanged() method is not getting called while I am running my app on mobile. What may be the reason behind it?

How to send latitude and longitude to android emulator

Open DDMS perspective in Eclipse (Window -> Open Perspective)
Select your emulator device
Select the tab named emulator control
In ‘Location Controls’ panel, ‘Manual’ tab, give the Longitude and Latitude as input and ‘Send’.

For this steps we simple load a .kml file to emulator that will take a automatically from the LOCATION CONTOLS…

Thanks for a nice tutorial.Kindly help me on how to serve the obtained coordinates(latitudes&longitudes) to MySQL database.

Thank you sir…
this is very important to me. Pleas carry on your tutorials ahead.

I have seen some applications being able to retrieve the VLR Global title , something like the Node Number you are latched on , for example in Jordan it will be something like 96279123456 , but from the API i am not able to get to that level , any idea how could that have been done ?

Can anyone please help me on automatic storage of the obtained coordinates (latitude &longitude…from this tutorial)in mySQL database, this should be done without requiring the phone user to press a send button.
May God bless you for your kind assistance.
Happy coding!!

Friends,is there no one who can give a hint on this. Plz your assistance or some links/books to refer to will help me a lot.

I want to find my friend location trough googlemap
So what kind of permission i have to use in my manifest file ,is this possible??

i am working on one friend Find locater .
reply

Sir this code running well in emulator but not in phone device and itz by default shows hello world.. how can i fix it?and as like many people are geeting same problem.. pls gv us proper solution.

Its is really awesome tutorial Thank You 🙂

Sir,
i am using GPS Location find in my application and how to store in sqlite database so i am confuesd please help me sir.

i need source code

[…] said all the above, I just noticed that I have written an Android GPS tutorial already. Though I feel like a buffoon, somehow I have to manage now. Its okay, it will do no harm […]

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