manniru
12/4/2014 - 2:14 AM
Android GPSService a class to get a GPS Location of Android Devices
Android GPSService a class to get a GPS Location of Android Devices
package com.mma.kolapo;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;
public class Main extends Activity {
Handler mHandler = new Handler();
int interval = 10; // in seconds
TextView gps1tv, gps2tv, addr1tv, addr2tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
gps1tv = (TextView)findViewById(R.id.gps1tv);
gps2tv = (TextView)findViewById(R.id.gps2tv);
addr1tv = (TextView)findViewById(R.id.addr1tv);
addr2tv = (TextView)findViewById(R.id.addr1tv);
new Thread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
try {
Thread.sleep(interval*1000);
mHandler.post(new Runnable() {
@Override
public void run() {
//post("");
getGps();
}
});
} catch (Exception e) {
// TODO: handle exception
}
}
}
}).start();
// Thread that send sms
new Thread(new Runnable() {
@Override
public void run() {
while (true) {
try {
Thread.sleep(60*1000);
mHandler.post(new Runnable() {
@Override
public void run() { sendSMS("601123064474", "hello from Kolapo Project"); }
});
} catch (Exception e) { }
}
}
}).start();
Toast.makeText(getApplicationContext(), "hello", Toast.LENGTH_LONG).show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void sendSMS(String mobileno, String message) {
Toast.makeText(getApplicationContext(), "sending sms to "+mobileno, Toast.LENGTH_LONG).show();
}
public void getGps() {
String address = "";
GPSService mGPSService = new GPSService(getApplicationContext());
mGPSService.getLocation();
if (mGPSService.isLocationAvailable == false) {
// Here you can ask the user to try again, using return; for that
Toast.makeText(getApplicationContext(), "Your location is not available, please try again.", Toast.LENGTH_SHORT).show();
return;
// Or you can continue without getting the location, remove the return; above and uncomment the line given below
// address = "Location not available";
} else {
// Getting location co-ordinates
double latitude = mGPSService.getLatitude();
double longitude = mGPSService.getLongitude();
Toast.makeText(getApplicationContext(), "Latitude:" + latitude + " | Longitude: " + longitude, Toast.LENGTH_LONG).show();
address = mGPSService.getLocationAddress();
gps1tv.setText("Latitude: " + latitude + " \nLongitude: " + longitude);
addr1tv.setText("Address: " + address);
}
Toast.makeText(getApplicationContext(), "Your address is: " + address, Toast.LENGTH_SHORT).show();
// make sure you close the gps after using it. Save user's battery power
mGPSService.closeGPS();
}
}
package com.mma.kolapo;
/**
* Created by mannir on 04/12/2014.
*/
import java.io.IOException;
import java.util.List;
import java.util.Locale;
import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
public class GPSService extends Service implements LocationListener {
// saving the context for later use
private final Context mContext;
// if GPS is enabled
boolean isGPSEnabled = false;
// if Network is enabled
boolean isNetworkEnabled = false;
// if Location co-ordinates are available using GPS or Network
public boolean isLocationAvailable = false;
// Location and co-ordinates coordinates
Location mLocation;
double mLatitude;
double mLongitude;
// Minimum time fluctuation for next update (in milliseconds)
private static final long TIME = 30000;
// Minimum distance fluctuation for next update (in meters)
private static final long DISTANCE = 20;
// Declaring a Location Manager
protected LocationManager mLocationManager;
public GPSService(Context context) {
this.mContext = context;
mLocationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
}
/**
* Returs the Location
*
* @return Location or null if no location is found
*/
public Location getLocation() {
try {
// Getting GPS status
isGPSEnabled = mLocationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// If GPS enabled, get latitude/longitude using GPS Services
if (isGPSEnabled) {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, TIME, DISTANCE, this);
if (mLocationManager != null) {
mLocation = mLocationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (mLocation != null) {
mLatitude = mLocation.getLatitude();
mLongitude = mLocation.getLongitude();
isLocationAvailable = true; // setting a flag that
// location is available
return mLocation;
}
}
}
// If we are reaching this part, it means GPS was not able to fetch
// any location
// Getting network status
isNetworkEnabled = mLocationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (isNetworkEnabled) {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, TIME, DISTANCE, this);
if (mLocationManager != null) {
mLocation = mLocationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (mLocation != null) {
mLatitude = mLocation.getLatitude();
mLongitude = mLocation.getLongitude();
isLocationAvailable = true; // setting a flag that
// location is available
return mLocation;
}
}
}
// If reaching here means, we were not able to get location neither
// from GPS not Network,
if (!isGPSEnabled) {
// so asking user to open GPS
askUserToOpenGPS();
}
} catch (Exception e) {
e.printStackTrace();
}
// if reaching here means, location was not available, so setting the
// flag as false
isLocationAvailable = false;
return null;
}
/**
* Gives you complete address of the location
*
* @return complete address in String
*/
public String getLocationAddress() {
if (isLocationAvailable) {
Geocoder geocoder = new Geocoder(mContext, Locale.getDefault());
// Get the current location from the input parameter list
// Create a list to contain the result address
List<Address> addresses = null;
try {
/*
* Return 1 address.
*/
addresses = geocoder.getFromLocation(mLatitude, mLongitude, 1);
} catch (IOException e1) {
e1.printStackTrace();
return ("IO Exception trying to get address:" + e1);
} catch (IllegalArgumentException e2) {
// Error message to post in the log
String errorString = "Illegal arguments "
+ Double.toString(mLatitude) + " , "
+ Double.toString(mLongitude)
+ " passed to address service";
e2.printStackTrace();
return errorString;
}
// If the reverse geocode returned an address
if (addresses != null && addresses.size() > 0) {
// Get the first address
Address address = addresses.get(0);
/*
* Format the first line of address (if available), city, and
* country name.
*/
String addressText = String.format(
"%s, %s, %s",
// If there's a street address, add it
address.getMaxAddressLineIndex() > 0 ? address
.getAddressLine(0) : "",
// Locality is usually a city
address.getLocality(),
// The country of the address
address.getCountryName());
// Return the text
return addressText;
} else {
return "No address found by the service: Note to the developers, If no address is found by google itself, there is nothing you can do about it.";
}
} else {
return "Location Not available";
}
}
/**
* get latitude
*
* @return latitude in double
*/
public double getLatitude() {
if (mLocation != null) {
mLatitude = mLocation.getLatitude();
}
return mLatitude;
}
/**
* get longitude
*
* @return longitude in double
*/
public double getLongitude() {
if (mLocation != null) {
mLongitude = mLocation.getLongitude();
}
return mLongitude;
}
/**
* close GPS to save battery
*/
public void closeGPS() {
if (mLocationManager != null) {
mLocationManager.removeUpdates(GPSService.this);
}
}
/**
* show settings to open GPS
*/
public void askUserToOpenGPS() {
AlertDialog.Builder mAlertDialog = new AlertDialog.Builder(mContext);
// Setting Dialog Title
mAlertDialog.setTitle("Location not available, Open GPS?")
.setMessage("Activate GPS to use use location services?")
.setPositiveButton("Open Settings", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
}
})
.setNegativeButton("Cancel",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
}).show();
}
/**
* Updating the location when location changes
*/
@Override
public void onLocationChanged(Location location) {
mLatitude = location.getLatitude();
mLongitude = location.getLongitude();
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}