MyActivity.java

package com.example.location;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.Settings;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MyActivity extends Activity {

    Button btnGPSShowLocation;
    Button btnShowAddress;
    TextView tvAddress;

    AppLocationService appLocationService;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my);
        tvAddress = (TextView) findViewById(R.id.tvAddress);
        appLocationService = new AppLocationService(
                MyActivity.this);

        btnGPSShowLocation = (Button) findViewById(R.id.btnGPSShowLocation);
        btnGPSShowLocation.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View arg0) {
                Location gpsLocation = appLocationService
                        .getLocation(LocationManager.GPS_PROVIDER);

                Location networkLocation = appLocationService
                		.getLocation(LocationManager.NETWORK_PROVIDER);
                if (gpsLocation != null) {
                    double latitude = gpsLocation.getLatitude();
                    double longitude = gpsLocation.getLongitude();
                    String result = "Latitude: " + gpsLocation.getLatitude() +
                            " Longitude: " + gpsLocation.getLongitude();
                    tvAddress.setText(result);
                }
                else if (networkLocation != null)
                {
                	double latitude = networkLocation.getLatitude();
                    double longitude = networkLocation.getLongitude();
                    String result = "Latitude: " + networkLocation.getLatitude() +
                            " Longitude: " + networkLocation.getLongitude();
                    tvAddress.setText(result);
                }
                else {
                    showSettingsAlert();
                }
            }
        });

        btnShowAddress = (Button) findViewById(R.id.btnShowAddress);
        btnShowAddress.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View arg0) {

                Location location = appLocationService
                        .getLocation(LocationManager.GPS_PROVIDER);
                Location networkLocation = appLocationService
                		.getLocation(LocationManager.NETWORK_PROVIDER);
                //you can hard-code the lat & long if you have issues with getting it
                //remove the below if-condition and use the following couple of lines
                //double latitude = 37.422005;
                //double longitude = -122.084095
              
                if (location != null) {
                    double latitude = location.getLatitude();
                    double longitude = location.getLongitude();
                    LocationAddress locationAddress = new LocationAddress();
                    locationAddress.getAddressFromLocation(latitude, longitude,
                            getApplicationContext(), new GeocoderHandler());
                }
                else if(networkLocation!=null)
                {
                	double latitude = networkLocation.getLatitude();
                    double longitude =  networkLocation.getLongitude();
                    LocationAddress locationAddress = new LocationAddress();
                    locationAddress.getAddressFromLocation(latitude, longitude,
                            getApplicationContext(), new GeocoderHandler());
                }
                else {
                    showSettingsAlert();
                }

            }
        });

    }


    public void showSettingsAlert() {
        AlertDialog.Builder alertDialog = new AlertDialog.Builder(
                MyActivity.this);
        alertDialog.setTitle("SETTINGS");
        alertDialog.setMessage("Enable Location Provider! Go to settings menu?");
        alertDialog.setPositiveButton("Settings",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        Intent intent = new Intent(
                                Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                        MyActivity.this.startActivity(intent);
                    }
                });
        alertDialog.setNegativeButton("Cancel",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.cancel();
                    }
                });
        alertDialog.show();
    }

    private class GeocoderHandler extends Handler {
        @Override
        public void handleMessage(Message message) {
            String locationAddress;
            switch (message.what) {
                case 1:
                    Bundle bundle = message.getData();
                    locationAddress = bundle.getString("address");
                    break;
                default:
                    locationAddress = null;
            }
            tvAddress.setText(locationAddress);
        }
    }
}