Example
Example Using Activity w/ LocationRequest
/*
* This example is useful if you only want to receive updates in this
* activity only, and have no use for location anywhere else.
*/
public class LocationActivity extends AppCompatActivity implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mLocationRequest = new LocationRequest()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY) //GPS quality location points
.setInterval(2000) //At least once every 2 seconds
.setFastestInterval(1000); //At most once a second
}
@Override
protected void onStart(){
super.onStart();
mGoogleApiClient.connect();
}
@Override
protected void onResume(){
super.onResume();
//Permission check for Android 6.0+
if(ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
if(mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
}
@Override
protected void onPause(){
super.onPause();
//Permission check for Android 6.0+
if(ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
if(mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
}
@Override
protected void onStop(){
super.onStop();
mGoogleApiClient.disconnect();
}
@Override
public void onConnected(@Nullable Bundle bundle) {
if(ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
@Override
public void onConnectionSuspended(int i) {
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
@Override
public void onLocationChanged(Location location) {
//Handle your location update code here
}
}
Example Using Service w/ PendingIntent and BroadcastReceiver
ExampleActivity
Recommended reading: LocalBroadcastManager
/*
* This example is useful if you have many different classes that should be
* receiving location updates, but want more granular control over which ones
* listen to the updates.
*
* For example, this activity will stop getting updates when it is not visible, but a database
* class with a registered local receiver will continue to receive updates, until "stopUpdates()" is called here.
*
*/
public class ExampleActivity extends AppCompatActivity {
private InternalLocationReceiver mInternalLocationReceiver;
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
//Create internal receiver object in this method only.
mInternalLocationReceiver = new InternalLocationReceiver(this);
}
@Override
protected void onResume(){
super.onResume();
//Register to receive updates in activity only when activity is visible
LocalBroadcastManager.getInstance(this).registerReceiver(mInternalLocationReceiver, new IntentFilter("googleLocation"));
}
@Override
protected void onPause(){
super.onPause();
//Unregister to stop receiving updates in activity when it is not visible.
//NOTE: You will still receive updates even if this activity is killed.
LocalBroadcastManager.getInstance(this).unregisterReceiver(mInternalLocationReceiver);
}
//Helper method to get updates
private void requestUpdates(){
startService(new Intent(this, LocationService.class).putExtra("request", true));
}
//Helper method to stop updates
private void stopUpdates(){
startService(new Intent(this, LocationService.class).putExtra("remove", true));
}
/*
* Internal receiver used to get location updates for this activity.
*
* This receiver and any receiver registered with LocalBroadcastManager does
* not need to be registered in the Manifest.
*
*/
private static class InternalLocationReceiver extends BroadcastReceiver{
private ExampleActivity mActivity;
InternalLocationReceiver(ExampleActivity activity){
mActivity = activity;
}
@Override
public void onReceive(Context context, Intent intent) {
final ExampleActivity activity = mActivity;
if(activity != null) {
LocationResult result = intent.getParcelableExtra("result");
//Handle location update here
}
}
}
}
LocationService
NOTE: Don't forget to register this service in the Manifest!
public class LocationService extends Service implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
@Override
public void onCreate(){
super.onCreate();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mLocationRequest = new LocationRequest()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY) //GPS quality location points
.setInterval(2000) //At least once every 2 seconds
.setFastestInterval(1000); //At most once a second
}
@Override
public int onStartCommand(Intent intent, int flags, int startId){
super.onStartCommand(intent, flags, startId);
//Permission check for Android 6.0+
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
if (intent.getBooleanExtra("request", false)) {
if (mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, getPendingIntent());
} else {
mGoogleApiClient.connect();
}
}
else if(intent.getBooleanExtra("remove", false)){
stopSelf();
}
}
return START_STICKY;
}
@Override
public void onDestroy(){
super.onDestroy();
if(mGoogleApiClient.isConnected()){
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, getPendingIntent());
mGoogleApiClient.disconnect();
}
}
private PendingIntent getPendingIntent(){
//Example for IntentService
//return PendingIntent.getService(this, 0, new Intent(this, **YOUR_INTENT_SERVICE_CLASS_HERE**), PendingIntent.FLAG_UPDATE_CURRENT);
//Example for BroadcastReceiver
return PendingIntent.getBroadcast(this, 0, new Intent(this, LocationReceiver.class), PendingIntent.FLAG_UPDATE_CURRENT);
}
@Override
public void onConnected(@Nullable Bundle bundle) {
//Permission check for Android 6.0+
if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, getPendingIntent());
}
}
@Override
public void onConnectionSuspended(int i) {
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
LocationReceiver
NOTE: Don't forget to register this receiver in the Manifest!
public class LocationReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if(LocationResult.hasResult(intent)){
LocationResult locationResult = LocationResult.extractResult(intent);
LocalBroadcastManager.getInstance(context).sendBroadcast(new Intent("googleLocation").putExtra("result", locationResult));
}
}
}
