I am using GoogleApiClient to get the Location updates for every ten seconds and it is working properly as expected But i want my application to do the same i.e,to send the location updates even when it is minimized or Back button is pressed which is not working.For Back Button i have used following code.
@Override
public void onBackPressed() {
moveTaskToBack(true);
}
Try to use this helper class to start location updates :
Edited :
import android.content.Context;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
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;
public class LocationHandler implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
private static final String TAG = LocationHandler.class.getSimpleName();
private Context mContext;
public GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
private Location mCurrentLocation;
private Handler handler;
public boolean isLocationAvailable = false;
public LocationHandler(Context context, Handler mHandler) {
this.mContext = context;
this.handler = mHandler;
buildGoogleApiClient();
}
@Override
public void onConnected(Bundle bundle) {
LocationManager locationManager = (LocationManager)
this.mContext.getSystemService(Context.LOCATION_SERVICE);
isLocationAvailable = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) &&
locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (mCurrentLocation == null) {
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
}
isLocationAvailable = true;
startLocationUpdates();
this.handler.sendEmptyMessage(0);
}
@Override
public void onConnectionSuspended(int i) {
Log.d(TAG, "onConnectionSuspended");
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.d(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + connectionResult.getErrorCode());
}
@Override
public void onLocationChanged(Location location) {
Log.d(TAG, "onLocationChanged = " + location.getLatitude());
mCurrentLocation = location;
}
/**
* To create location request
*/
public void createLocationRequest() {
Log.d(TAG, "createLocationRequest");
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(60 * 1000);
mLocationRequest.setFastestInterval(60 * 1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
}
/**
* To build google client
*/
public synchronized void buildGoogleApiClient() {
Log.d(TAG, "buildGoogleApiClient");
mGoogleApiClient = new GoogleApiClient.Builder(this.mContext)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
createLocationRequest();
mGoogleApiClient.connect();
}
/**
* To start location updates
*/
public void startLocationUpdates() {
Log.d(TAG, "startLocationUpdates");
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
/**
* To stop location updates
*/
public void stopLocationUpdates() {
Log.d(TAG, "stopLocationUpdates");
LocationServices.FusedLocationApi.removeLocationUpdates(
mGoogleApiClient, this);
}
/**
* To get current location
*
* @return A location object
*/
public Location getCurrentLocation() {
return mCurrentLocation;
}
}
In your activity do :
Like this :
Activity where we get location change updates :
import android.app.Activity;
import android.content.Context;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import java.lang.ref.WeakReference;
public class MainActivity extends Activity {
private LocationHandler locationUtility;
private LocationManager mLocationManager = null;
private IncomingHandler incomingHandler;
/**
* Handler of incoming messages from clients.
*/
private static class IncomingHandler extends Handler {
private WeakReference<MainActivity> mainActivityWeakReference;
public IncomingHandler(MainActivity mainActivity) {
mainActivityWeakReference = new WeakReference<>(mainActivity);
}
@Override
public void handleMessage(Message message) {
if (mainActivityWeakReference != null) {
MainActivity mainActivity = mainActivityWeakReference.get();
switch (message.what) {
case 0:
boolean isConnected = // check internet is connected
boolean isGPSEnabled = mainActivity.mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
boolean isNetworkEnabled = mainActivity.mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isConnected) {
// show alert or toast
}
if (!(isGPSEnabled && isNetworkEnabled)) {
// show alert or toast
}
if (mainActivity.locationUtility.mGoogleApiClient.isConnected()) {
mainActivity.locationUtility.startLocationUpdates(); // start updates
}
break;
}
}
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
incomingHandler = new IncomingHandler(this);
locationUtility = new LocationHandler(MainActivity.this, incomingHandler);
mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
}
}
When you want to stop updates use :
if (locationUtility.mGoogleApiClient.isConnected()) {
locationUtility.stopLocationUpdates();
}
This will update location even though your activity is paused unless it destroyed.
Also not to forget adding following permission in Manifest.xml :
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Thanks.
