Android Real-time User Location Tracking Using Google Map API v2.pdf

9/12/2016

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Android Real-time User Location Trac Tracking king Using Google Map API v2

ANDROID REAL-TIME USER USER LOCATION LOCA TION TRACKING USING GOOGLE MAP API V2  H Hen enry ry  Se Sept ptem embe berr 26 26,, 2016

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 6 Comments Comments

In this tutorial, we we are going to to learn how to implement Android Realtime user

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location tracking using Google Map API v2. Tracking user

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location can be beneficial when you want to record the distance and route a user has gone through during exercise or other activities. Based on the distance, you can calculate other parameters and present a

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meaningful and concise result to the user. https://i nd nduc es esm ilil e. e.c om om /a /andr oi oi d/ d/andr oi oi dd- re real -t -ti me me- us user -l -l oc ocati on on- tr tr ac ac ki ki ng ng- us usi ng ng- go googl ee- ma map- ap api -v -v2/

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Andr oi oi d R ea eal -t -ti me me U se ser Locati on on Tr ac acki ng ng Usi ng ng Googl e M ap ap API v2

Android real-time user location tracking using Google Map API v2 are usually use in sports and social networking apps.

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If you are looking for a way to draw path between two points on Google Map or to measures the distance and duration between

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two points, I will suggest you first read my posts on these topics.

WHAT WE ARE GOING TO ACHIEVE 1. Create and load a Google Map 2. Create a Background Service that will listener to onLocationChange events 3. Send the location data to a Local Broadcast Receiver 4. Update the UI Map View using the overlay Polyline to draw route path. Before we start it is important that that we understand what we are planning to achieve in this tutorial. I have add some screen-shot from this tutorial

APP SCREENSHOT

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CREATE NEW ANDROID PROJECT Lets start to soil our hands in code. Start up your IDE. For this tutorial, I am using the following tools and environment, feel free to use what works for you. Windows 10 Android Studio https://i nduc esm il e.c om /andr oi d/andr oi d- real -ti me- user -l ocati on- tr ac ki ng- usi ng- googl e- map- api -v2/

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Sony Xperia ZL Min SDK 14 Target SDK 23 To create a new android application project, follow the steps as stipulated below. Go to File menu Click on New menu Click on Android Application Enter Project name: AndroidRealtimeLocationTracking Package: com.inducesmile.androidrealtimelocationtracking Select Map Activity Name your activity: MapsActivity Keep other default selections Continue to click on next button until Finish button is active, then click on Finish Button. Since we selected default android Map Activity template, Android Contact me forthe code services 

Studio will add an xml file name google_maps_api.xml. This file is stored in the values folder inside the res folder of your android project. When you open the file, it contains instruction on how to obtain a Google Map Key. Every request your application send to Google Map Server requires a unique key that will be used to identify your application. Also, there is a limit to the number of request you can send in a day if your are using the free service. Your Google map key also helps Google to keep track of the number of request coming from your app. Copy for creating a Google Map Key and paste it in a web browser and hit enter. You will see a page like this.

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You can create a new project or use an existing project. Click the continue button to proceed. Click the Create AOI Key button that will appear in the next page to move over to Google API Manager page. In the Google API Manager page, click on credentials and the key link to open the page.


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Add a name for your key. Select Android apps to restrict all the request from android apps Add the your application package name https://i nduc esm il e.c om /andr oi d/andr oi d- real -ti me- user -l ocati on- tr ac ki ng- usi ng- googl e- map- api -v2/

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You can generate a SHA-1 certificate fingerprint. You will find the process on the page. Click the Save button when you are done. Finally, copy your application Google map key to the generated google_maps_api.xml as shown.

 1. 2.

13.

YOUR GOOGLE MAP API KEY HERE

14.

BUILD.GRADLE In android, since we are going to make use of user location in drawing path between two points in Google Map API, we are going to use Google Play Services. Android Location Service API is part of Google Play Services. Since the library is too big and to avoid going beyond 64000 methods which will force use to multiDexEnabled true in the defaultConfig, we will use Location and Map libraries alone. https://i nduc esm il e.c om /andr oi d/andr oi d- real -ti me- user -l ocati on- tr ac ki ng- usi ng- googl e- map- api -v2/

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Inaddition to these libraries, we are going to make use of Volley network library and Gson library. Open your application build.gradle and add the code below. 1.

apply plugin: 'com.android.application'

2.

android {

3.

compileSdkVersion 24

4.

buildToolsVersion "24.0.1"

5.

defaultConfig {

6.

applicationId "com.inducesmile.androidlocationtracking"

7.

minSdkVersion 14

8.

targetSdkVersion 24

9.

versionCode 1 versionName "1.0"

10. 11.

}

12.

buildTypes { release {

13.

minifyEnabled false

14. 15.

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' }

16.

}

17. 18.

}

19.

dependencies {

20.

compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12'

21. 22.

compile 'com.android.support:appcompatv7:24.2.1'

23.

compile 'com.google.android.gms:play-servicesmaps:9.4.0'




24.

compile 'com.google.android.gms:play-serviceslocation:9.4.0'

25.

compile 'com.readystatesoftware.sqliteasset:sqliteassethelp er:+'

26.

compile 'com.google.code.gson:gson:2.6.1'

27.

compile 'com.mcxiaoke.volley:library:1.0.19'

28.

}

ANDROIDMANIFEST.XML We are going to update our application androidmanifest.xml. Using Android Location requires that our application must request for user permission before it can access their location. Starting from android 6, location request are run time permission which the user will grant or deny while using the app. Open your AndroidManifest.xml file and add the code below. https://i nduc esm il e.c om /andr oi d/andr oi d- real -ti me- user -l ocati on- tr ac ki ng- usi ng- googl e- map- api -v2/

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1.

2.

3.

package="com.inducesmile.androidlocationtracking"> 4.

5.

6.

7. 8.

android:name=".network.CustomApplication"

9.

android:allowBackup="true"

10.

android:icon="@mipmap/ic_launcher"

11.

android:label="@string/app_name"

12.

android:supportsRtl="true"

13.

android:theme="@style/AppTheme">

14.

15. 16.

17.

18.

19. 20.

<meta-data

21. 22.

android:name="com.google.android.geo.API_KEY" android:value="@string/google_maps_key"

23.

/> 24. Contact me for
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android:name=".MapTrackingActivity"

25. 26.

android:label="@string/title_activity_map_tracking" > 27. 28.

29.

android:name=".RouteService"

30.

android:enabled="true"

31.

android:exported="false">

32. 33. 34.

The meta-data retrieves the Google Map Key that we obtained before.

STRINGS.XML https://i nduc esm il e.c om /andr oi d/andr oi d- real -ti me- user -l ocati on- tr ac ki ng- usi ng- googl e- map- api -v2/

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We are going to update our project strings.xml file located in the values folder inside the res folder. Open the file and add the code below to it. 1.

2.

Android Real-time Location Tracking

3.

Map Route Tracking

4.

Walk and route your path on map

5.

Please note that your location permission is important if you want to draw your route on map while walking or running

6.

Location Permission Denied

7.

Wow, please come back again when you need it and grant the permission

8.

COLORS.XML Open the colors.xml file in the same location as the strings.xml file and add the code below to the file. 1.

2.

3.

#4CAF50

Contact me for code services  #388E3C 4. 5.

#C8E6C9

6.

#4CAF50

7.

#212121

8. 9. 10. 11.

#757575 #FFFFFF #BDBDBD

ACTIVITY_MAP_TRACKING.XML The MapTracking class main layout file consist of a Framelayout ViewGroup with a Fragment and Button as children. Open the layout file and add the code below. 1.

xmlns:map="http://schemas.android.com/apk/resauto"

3.

xmlns:tools="http://schemas.android.com/tools"

4.

android:layout_height="match_parent"

5.

android:orientation="vertical"

6.

android:layout_width="match_parent">

7.

8.

xmlns:tools="http://schemas.android.com/tools" android:id="@+id/map"

9. 10.

android:name="com.google.android.gms.maps.SupportMa pFragment" 11.

android:layout_width="match_parent"

12.

android:layout_height="match_parent"

13.

android:layout_gravity="center"

14.

tools:context="com.inducesmile.androidlocationtrack ing.MapTrackingActivity" />
15. 16.

android:id="@+id/start_tracking"

17.

android:layout_width="match_parent"

18.

android:layout_height="wrap_content"

19.

android:padding="16dp"

20.

android:background="@color/colorPrimaryDark" 21.

android:textColor="@color/colorIcons"

22.

android:text="@string/start_tracking"

23.

android:layout_gravity="bottom"

24.

android:layout_marginBottom="40dp"

25.

android:layout_marginRight="16dp"

26.

android:layout_marginLeft="16dp"

27.

android:gravity="center"/>

28.


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MAPTRACKINGACTIVITY CLASS The MapTrackingActivity class will implement the GoogleApiClient.ConnectionCallback interface. We will create an instance of the GoogleApiClient which we will use to connect to Google Play Services and interact with the Location Service API. In the onConnection() callback method, we will create a location request and check if the our device has the right location settings before we can obtain the device current location. The GoogleApiClient object is released in the onStop() callback method. We have also created an inner RouteBroadCastReceiver class which will receive intent from the background service to update the Map route UI.


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Open the MapTrackingActivity class and add the code below to it. 1.

import android.Manifest;

2.

import android.content.BroadcastReceiver;

3.

import android.content.Context;

4.

import android.content.Intent;

5.

import android.content.IntentFilter;

6.

import android.content.pm.PackageManager;

7.

import android.graphics.Color;

8.

import android.location.Location;

9.

import android.os.Bundle;

10.

import android.support.annotation.NonNull;

11.

import android.support.annotation.Nullable;

12.

import android.support.v4.app.ActivityCompat;

13.

import android.support.v4.app.FragmentActivity;

14.

import android.support.v4.content.LocalBroadcastManager;

15.

import android.util.Log;

16.

import com.google.android.gms.common.api.GoogleApiClient;

17.

import com.google.android.gms.common.api.PendingResult;

18.

import com.google.android.gms.common.api.ResultCallback;

19.

import com.google.android.gms.common.api.Status;

20.

import com.google.android.gms.location.LocationRequest;

21.

import com.google.android.gms.location.LocationServices;

22.

import com.google.android.gms.location.LocationSettingsReq uest;

23.

import com.google.android.gms.location.LocationSettingsRes ult;

Contact me for code services 24.

 import com.google.android.gms.location.LocationSettingsSta tusCodes;

25.

import com.google.android.gms.maps.CameraUpdateFactory;

26.

import com.google.android.gms.maps.GoogleMap;

27.

import com.google.android.gms.maps.OnMapReadyCallback;

28.

import com.google.android.gms.maps.SupportMapFragment;

29.

import com.google.android.gms.maps.model.CameraPosition;

30.

import com.google.android.gms.maps.model.LatLng;

31.

import com.google.android.gms.maps.model.MarkerOptions;

32.

import com.google.android.gms.maps.model.Polyline;

33.

import com.google.android.gms.maps.model.PolylineOptions;

34.

import com.inducesmile.androidlocationtracking.database.Da tabaseQuery;

35.

import java.util.ArrayList;

36.

import java.util.List;


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37.

public class MapTrackingActivity extends FragmentActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks{

38.

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

39.

private GoogleApiClient mGoogleApiClient;

40.

private Location mLastLocation;

41.

private LocationRequest mLocationRequest;

42.

private double latitudeValue = 0.0;

43.

private double longitudeValue = 0.0;

44.

private GoogleMap mMap;

45.

private DatabaseQuery mQuery;

46.

private RouteBroadCastReceiver routeReceiver;

47. 48. 49.

private List startToPresentLocations; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

50. 51.

setContentView(R.layout.activity_map_tracking); if (mGoogleApiClient == null) {

52. 53.

mGoogleApiClient = new GoogleApiClient.Builder(this)

54.

.addConnectionCallbacks(this)

55.

.addApi(LocationServices.API)

56.

.build();

57.

}

58.

mQuery = new DatabaseQuery(this);

59.

startToPresentLocations = mQuery.getAllLocationObjects(); mLocationRequest = createLocationRequest();

60. 61.

routeReceiver = new RouteBroadCastReceiver();

// Obtain the SupportMapFragment and get notified when the map is ready to be used. Contact me for code services 62.



63.

SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.m ap); mapFragment.getMapAsync(this);

64. 65.

}

66.

@Override

67.

public void onMapReady(GoogleMap googleMap) { mMap = googleMap;

68. 69.

}

70.

private void markStartingLocationOnMap(GoogleMap mapObject, LatLng location){

71.

mapObject.addMarker(new MarkerOptions().position(location).title("Current location"));

72.

mapObject.moveCamera(CameraUpdateFactory.newLatLng( location)); 73.

}

74.

@Override

75.

public void onConnected(@Nullable Bundle bundle) {


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76.

Log.d(TAG, "Connection method has been called"); LocationSettingsRequest.Builder builder =

77.

new LocationSettingsRequest.Builder().addLocationReques t(mLocationRequest); 78.

PendingResult result = LocationServices.SettingsApi.checkLocationSettings( mGoogleApiClient, builder.build());

79.

result.setResultCallback(new ResultCallback() { @Override

80. 81.

public void onResult(@NonNull LocationSettingsResult result) {

82.

final Status status = result.getStatus(); switch (status.getStatusCode()) {

83. 84.

case LocationSettingsStatusCodes.SUCCESS:

85.

if (ActivityCompat.checkSelfPermission(getApplicationC ontext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED

86.

&& ActivityCompat.checkSelfPermission(getApplicationCo ntext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {

87.

mLastLocation = LocationServices.FusedLocationApi.getLastLocation(m GoogleApiClient); if (mLastLocation !=

88.

null) { latitudeValue =

89.

mLastLocation.getLatitude(); 90.

Contact me for code services  mLastLocation.getLongitude(); 91.

longitudeValue =

Log.d(TAG, "Latitude 4: " + latitudeValue + " Longitude 4: " + longitudeValue); refreshMap(mMap);

92. 93.

markStartingLocationOnMap(mMap, new LatLng(latitudeValue, longitudeValue)); 94.

startPolyline(mMap, new LatLng(latitudeValue, longitudeValue)); }

95. 96.

}

97.

break;

98.

case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAIL ABLE: break;

99.

}

100.

}

101.

});

102. 103.

}

104.

@Override

105.

public void onConnectionSuspended(int i) {

106.

}


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107.

private class RouteBroadCastReceiver extends BroadcastReceiver{ @Override

108. 109.

public void onReceive(Context context, Intent intent) {

110.

String local = intent.getExtras().getString("RESULT_CODE");

111.

assert local != null;

112.

if(local.equals("LOCAL")){ //get all data from database

113. 114.

startToPresentLocations = mQuery.getAllLocationObjects(); if(startToPresentLocations.size() >

115.

0){ //prepare map drawing.

116. 117.

List locationPoints = getPoints(startToPresentLocations); refreshMap(mMap);

118. 119.

markStartingLocationOnMap(mMap, locationPoints.get(0)); drawRouteOnMap(mMap,

120.

locationPoints); }

121.

}

122.

}

123.

}

124. 125.

private List getPoints(List mLocations){ List points = new ArrayList

126.

(); for(LocationObject mLocation : mLocations){

127. 128.

points.add(new LatLng(mLocation.getLatitude(), mLocation.getLongitude()));

129.

}

130.

return points;


131. 132.

}



private void startPolyline(GoogleMap map, LatLng location){ if(map == null){

133. 134.

Log.d(TAG, "Map object is not null");

135.

return; }

136. 137.

PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodes ic(true); options.add(location);

138. 139.

Polyline polyline = map.addPolyline(options);

140.

CameraPosition cameraPosition = new CameraPosition.Builder()

141.

.target(location)

142.

.zoom(16)

143.

.build();

144.

map.animateCamera(CameraUpdateFactory.newCameraPosi tion(cameraPosition)); 145. 146.

} private void drawRouteOnMap(GoogleMap map, List positions){


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147.

PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodes ic(true); options.addAll(positions);

148. 149.

Polyline polyline = map.addPolyline(options);

150.

CameraPosition cameraPosition = new CameraPosition.Builder()

151.

.target(new LatLng(positions.get(0).latitude, positions.get(0).longitude))

152.

.zoom(17)

153.

.bearing(90)

154.

.tilt(40)

155.

.build();

156.

map.animateCamera(CameraUpdateFactory.newCameraPosi tion(cameraPosition)); 157.

}

158.

private void refreshMap(GoogleMap mapInstance){ mapInstance.clear();

159. 160.

}

161.

protected LocationRequest createLocationRequest() {

162.

LocationRequest mLocationRequest = new LocationRequest();

163.

mLocationRequest.setInterval(5000);

164.

mLocationRequest.setFastestInterval(3000);

165.

mLocationRequest.setPriority(LocationRequest.PRIORI TY_HIGH_ACCURACY); return mLocationRequest;

166. 167.

}

168.

@Override

169.

protected void onResume() {

170.

super.onResume();

171.

if(routeReceiver == null){


172.

routeReceiver = new RouteBroadCastReceiver(); }

173. 174.



IntentFilter filter = new IntentFilter(RouteService.ACTION);

175.

LocalBroadcastManager.getInstance(this).registerRec eiver(routeReceiver, filter); 176.

}

177.

@Override

178.

protected void onPause() { super.onPause();

179. 180.

LocalBroadcastManager.getInstance(this).unregisterR eceiver(routeReceiver); 181.

}

182.

@Override

183.

protected void onStart() {

184.

mGoogleApiClient.connect();

185.

super.onStart();

186.

}

187.

@Override

188.

protected void onStop() {


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189.

mGoogleApiClient.disconnect();

190.

super.onStop(); }

191. 192.

}

ROUTESERVICE CLASS The RouteService class is an android service class that runs in the background. The service starts when a user toggle the start tracking button and you can as well stop it with the button is the button uses a flag to tracking the state of the service class. The RouteService class implements the GoogleApiClient OnConnectionCallbacks, OnConnectionFailedListener and LocationListener. The LocationListener overrides the onLocationChange() method which pass the current location as parameter. The location is stored in SQLite database and the Service class will notify the Local Broadcast Receiver class of the location update. Open the RouteService.java file and add the code below. 1.

import android.Manifest;

2.

import android.app.Service;

3.

import android.content.Intent;

Contact me for code services  import android.content.pm.PackageManager; 4. 5.

import android.location.Location;

6.

import android.os.Bundle;

7.

import android.os.IBinder;

8.

import android.support.annotation.NonNull;

9.

import android.support.annotation.Nullable;

10.

import android.support.v4.app.ActivityCompat;

11.

import android.support.v4.content.LocalBroadcastManager;

12.

import android.util.Log;

13.

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

14.

import com.google.android.gms.common.api.GoogleApiClient;

15.

import com.google.android.gms.common.api.PendingResult;

16.

import com.google.android.gms.common.api.ResultCallback;

17.

import com.google.android.gms.common.api.Status;

18.

import com.google.android.gms.location.LocationListener;

19.

import com.google.android.gms.location.LocationRequest;


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20.

import com.google.android.gms.location.LocationServices;

21.

import com.google.android.gms.location.LocationSettingsReq uest;

22.

import com.google.android.gms.location.LocationSettingsRes ult;

23.

import com.google.android.gms.location.LocationSettingsSta tusCodes;

24.

import com.inducesmile.androidlocationtracking.database.Da tabaseQuery;

25.

import com.inducesmile.androidlocationtracking.helpers.Cus tomSharedPreference;

26.

public class RouteService extends Service implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {

27.

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

28.

public static final String ACTION = "com.inducesmile.androidlocationtracking.RouteServi ce";

29.

private GoogleApiClient mGoogleApiClient;

30.

private Location mLastLocation;

31.

private LocationRequest mLocationRequest;

32.

private double latitudeValue = 0.0;

33.

private double longitudeValue = 0.0;

34.

private CustomSharedPreference customSharedPreference;

35.

private DatabaseQuery query;

36.

private long startTimeInMilliSeconds = 0L;

37.

private boolean isServiceRunning = false;

38. @Override Contact me for code services 39. 40. 41. 42.



public void onCreate() { super.onCreate(); customSharedPreference = new CustomSharedPreference(getApplicationContext()); if(isRouteTrackingOn()){

43.

startTimeInMilliSeconds = System.currentTimeMillis();

44.

Log.d(TAG, "Current time " + startTimeInMilliSeconds); Log.d(TAG, "Service is running");

45. 46. 47.

} query = new DatabaseQuery(getApplicationContext());

48.

mLocationRequest = createLocationRequest();

49.

if (mGoogleApiClient == null) {

50. 51.

mGoogleApiClient = new GoogleApiClient.Builder(this) .addConnectionCallbacks(this)

52.

.addOnConnectionFailedListener(this) 53.

.addApi(LocationServices.API)

54.

.build();

55.

mGoogleApiClient.connect();


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}

56. 57.

}

58.

@Override

59.

public int onStartCommand(Intent intent, int flags, int startId) {

60.

isServiceRunning = true;

61.

return Service.START_STICKY;

62.

}

63.

@Nullable

64.

@Override

65.

public IBinder onBind(Intent intent) { return null;

66. 67.

}

68.

@Override

69.

public void onConnected(@Nullable Bundle bundle) {

70.

Log.d(TAG, "Connection method has been called"); LocationSettingsRequest.Builder builder =

71.

new LocationSettingsRequest.Builder().addLocationReques t(mLocationRequest); 72.

PendingResult result = LocationServices.SettingsApi.checkLocationSettings( mGoogleApiClient, builder.build());

73.

result.setResultCallback(new ResultCallback() { @Override

74. 75.

public void onResult(@NonNull LocationSettingsResult result) {

76.

final Status status = result.getStatus(); switch (status.getStatusCode()) {

77. 78.

case LocationSettingsStatusCodes.SUCCESS:




79.

if (ActivityCompat.checkSelfPermission(getApplicationC ontext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED

80.

&& ActivityCompat.checkSelfPermission(getApplicationCo ntext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {

81.

mLastLocation = LocationServices.FusedLocationApi.getLastLocation(m GoogleApiClient); if (mLastLocation !=

82.

null) { latitudeValue =

83.

mLastLocation.getLatitude(); longitudeValue =

84.

mLastLocation.getLongitude(); 85.

Log.d(TAG, "Latitude 1: " + latitudeValue + " Longitude 1: " + longitudeValue);

86.

LocationServices.FusedLocationApi.requestLocationUp dates(mGoogleApiClient, mLocationRequest, RouteService.this); https://i nduc esm il e.c om /andr oi d/andr oi d- real -ti me- user -l ocati on- tr ac ki ng- usi ng- googl e- map- api -v2/

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}

87. 88.

}

89.

break;

90.

case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAIL ABLE: break;

91.

}

92.

}

93.

});

94. 95.

}

96.

@Override

97.

public void onConnectionSuspended(int i) {

98.

}

99.

@Override

100.

public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { }

101. 102.

protected LocationRequest createLocationRequest() {

103.

LocationRequest mLocationRequest = new LocationRequest();

104.

mLocationRequest.setInterval(5000);

105.

mLocationRequest.setFastestInterval(3000);

106.

mLocationRequest.setPriority(LocationRequest.PRIORI TY_HIGH_ACCURACY); return mLocationRequest;

107. 108.

}

109.

@Override

110.

public void onLocationChanged(Location location) {

111.

Log.d(TAG, "Latitude " + location.getLatitude() + " Longitude " + location.getLongitude());

112. Contact

"SERVICE me forLog.d(TAG, code services 

RUNNING " +

isServiceRunning);

113.

if(isRouteTrackingOn() && startTimeInMilliSeconds == 0){

114.

startTimeInMilliSeconds = System.currentTimeMillis();

115. 116.

} if(isRouteTrackingOn() && startTimeInMilliSeconds > 0){ latitudeValue = location.getLatitude();

117. 118.

longitudeValue = location.getLongitude();

119.

Log.d(TAG, "Latitude " + latitudeValue + " Longitude " + longitudeValue); // insert values to local sqlite

120.

database 121.

query.addNewLocationObject(System.currentTimeMillis (), latitudeValue, longitudeValue); 122.

// send local broadcast receiver to application components

123.

Intent localBroadcastIntent = new Intent(ACTION);

124.

localBroadcastIntent.putExtra("RESULT_CODE", https://i nduc esm il e.c om /andr oi d/andr oi d- real -ti me- user -l ocati on- tr ac ki ng- usi ng- googl e- map- api -v2/

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"LOCAL"); 125.

LocalBroadcastManager.getInstance(getApplicationCon text()).sendBroadcast(localBroadcastIntent); long timeoutTracking = 2 * 60 * 60 *

126.

1000; 127.

if(System.currentTimeMillis() >= startTimeInMilliSeconds + timeoutTracking){ //turn of the tracking

128. 129.

customSharedPreference.setServiceState(false); Log.d(TAG, "SERVICE HAS BEEN

130.

STOPPED"); this.stopSelf();

131.

}

132. 133.

}

134.

if(!isRouteTrackingOn()){ Log.d(TAG, "SERVICE HAS BEEN STOPPED

135.

1"); isServiceRunning = false;

136. 137.

Log.d(TAG, "SERVICE STOPPED " + isServiceRunning);

138.

Intent dialogIntent = new Intent(this, RecordResultActivity.class);

139.

dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK ); 140.

this.startActivity(dialogIntent);

141.

this.stopSelf(); }

142. 143.

}

144.

private boolean isRouteTrackingOn(){

145.

Log.d(TAG, "SERVICE STATE " + customSharedPreference.getServiceState());

146.

return customSharedPreference.getServiceState();

Contact me for code services }

147.



148.

@Override

149.

public void onDestroy() {

150.

mGoogleApiClient.disconnect();

151.

super.onDestroy(); }

152. 153.

}

This brings us to the end of this tutorial. I hope that you have learn something. Run your app and take a work around you will see how your location is being drawn on the map. You can download the code for this tutorial below. If you are having hard time downloading the tutorial, kindly contact me. Remember to subscribe with your email address to be among the first to receive my new android blog post once it is published.

OTHER INTERESTING POSTS: https://i nduc esm il e.c om /andr oi d/andr oi d- real -ti me- user -l ocati on- tr ac ki ng- usi ng- googl e- map- api -v2/

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Tags: Android Real-time User Location Tracking Using Google Map API v2, location tracking in android, location tracking with Google Map

ABOUT THE AUTHOR Henry I like Java. I breath Android and iOS. I love Yii and Javascript


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9/12/2016


6 COMMENTS

roger

October 27, 2016

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Hi Henry, This is very useful tutorial. I just wonder if you can also post class source code of LocationObject as well as the database source code so that to make it as a complete example that I can learn and try. Thanks a lot Ling View Comment

Henry Author

October 27, 2016

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Thanks, I will do that when time permits me. Kindly keep checking back View Comment

Contact me for code services akhil



October 27, 2016

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how would i save the data travelled in sqlite and use it when i click button reroute ??? View Comment

Henry Author

October 27, 2016

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I will soon provide more information with regards to saving real-time location data in SQLite database. View Comment


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roger

October 29, 2016

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Thanks a lot! Look forward to see the SQLite database for location data View Comment

roger

October 29, 2016

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By the way , what does RecordResultActivity.class do in this app? Is it a new activity class that record the data? How is it different fromMapTrackingActivity? View Comment

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Android Real-time User Location Tracking Using Google Map API v2.pdf

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