Request Location Updates with LocationListener.onLocationChanged()

This example show how to request location auto updates, by implementing LocationListener.onLocationChanged().


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MainActivity.java

package com.blogspot.android_er.androidautoupdatelocation;

import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
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;

public class MainActivity extends AppCompatActivity
        implements LocationListener, GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener {

    GoogleApiClient mGoogleApiClient;
    LocationRequest mLocationRequest;
    TextView textAutoUpdateLocation;

    static final int MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION = 1;

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

        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(5000);
        mLocationRequest.setFastestInterval(5000);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
    }

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

    @Override
    protected void onStop() {
        mGoogleApiClient.disconnect();
        super.onStop();
    }

    @Override
    public void onLocationChanged(Location location) {
        if (location != null) {
            String strLocation =
                    DateFormat.getTimeInstance().format(location.getTime()) + "\n" +
                            "Latitude=" + location.getLatitude() + "\n" +
                            "Longitude=" + location.getLongitude();
            textAutoUpdateLocation.setText(strLocation);
        }
    }

    @Override
    public void onConnected(@Nullable 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.
            ActivityCompat.requestPermissions(MainActivity.this,
                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
                    MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION);

            return;
        }
        LocationServices.FusedLocationApi.requestLocationUpdates(
                mGoogleApiClient, mLocationRequest, this);

    }

    @Override
    public void onRequestPermissionsResult(
            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case MY_PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    Toast.makeText(MainActivity.this,
                            "permission was granted, :)",
                            Toast.LENGTH_LONG).show();

                    try{
                        LocationServices.FusedLocationApi.requestLocationUpdates(
                                mGoogleApiClient, mLocationRequest, this);
                    }catch(SecurityException e){
                        Toast.makeText(MainActivity.this,
                                "SecurityException:\n" + e.toString(),
                                Toast.LENGTH_LONG).show();
                    }
                } else {
                    Toast.makeText(MainActivity.this,
                            "permission denied, ...:(",
                            Toast.LENGTH_LONG).show();
                }
                return;
            }
        }
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
        Toast.makeText(MainActivity.this,
                "onConnectionFailed: \n" + connectionResult.toString(),
                Toast.LENGTH_LONG).show();
    }
}

layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    android:orientation="vertical"
    tools:context="com.blogspot.android_er.androidautoupdatelocation.MainActivity">

     <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/autoupdatelocation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="30dp"
        android:textStyle="italic|bold"/>
</LinearLayout>

Add uses-permission of "android.permission.ACCESS_FINE_LOCATION" in AndroidManifest.xml

Download the files .

It's not complete solution, to know more details, refer Android Developers - Receiving Location Updates, a example of "LocationUpdates" is provided.

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Related:
- Get my Last Known Location, by calling LocationServices.FusedLocationApi.getLastLocation()