locationstuffs/MainActivity.java at master · mrMarce/locationstuffs · GitHub

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package com.example.usinglocationiapi.usinglocationapi;


import android.content.Intent;
import android.location.Location;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
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 MainActivity extends ActionBarActivity  implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {

    private static int REQUEST_CODE_RECOVER_PLAY_SERVICES = 200;

    private GoogleApiClient mGoogleApiClient;
    private Location mLastLocation;
    private LocationRequest mLocationRequest;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (checkGooglePlayServices()) {
            buildGoogleApiClient();

            //prepare connection request
            createLocationRequest();
        }
    }


    private boolean checkGooglePlayServices() {

        int checkGooglePlayServices = GooglePlayServicesUtil
                .isGooglePlayServicesAvailable(this);
        if (checkGooglePlayServices != ConnectionResult.SUCCESS) {
              /*
               * google play services is missing or update is required
               *  return code could be
               * SUCCESS,
               * SERVICE_MISSING, SERVICE_VERSION_UPDATE_REQUIRED,
               * SERVICE_DISABLED, SERVICE_INVALID.
               */
            GooglePlayServicesUtil.getErrorDialog(checkGooglePlayServices,
                    this, REQUEST_CODE_RECOVER_PLAY_SERVICES).show();

            return false;
        }

        return true;

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_CODE_RECOVER_PLAY_SERVICES) {

            if (resultCode == RESULT_OK) {
                // Make sure the app is not already connected or attempting to connect
                if (!mGoogleApiClient.isConnecting() &&
                        !mGoogleApiClient.isConnected()) {
                    mGoogleApiClient.connect();
                }
            }else if (resultCode == RESULT_CANCELED) {
                Toast.makeText(this, "Google Play Services must be installed.",
                        Toast.LENGTH_SHORT).show();
                finish();
            }
        }
    }

    protected synchronized void buildGoogleApiClient() {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();

    }


    @Override
    public void onConnected(Bundle bundle) {

        mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
                mGoogleApiClient);
        if (mLastLocation != null) {

            Toast.makeText(this, "Latitude:" + mLastLocation.getLatitude()+", Longitude:"+mLastLocation.getLongitude(),Toast.LENGTH_LONG).show();

        }

        startLocationUpdates();

    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {

    }


    /* Second part*/

    @Override
    protected void onStart() {
        super.onStart();

        if (mGoogleApiClient != null) {
            mGoogleApiClient.connect();
        }

    }

    protected void startLocationUpdates() {
        LocationServices.FusedLocationApi.requestLocationUpdates(
                mGoogleApiClient, mLocationRequest, this);
    }

    protected void createLocationRequest() {
        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(20000);
        mLocationRequest.setFastestInterval(5000);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    }

    @Override
    public void onLocationChanged(Location location) {
        mLastLocation = location;
        Toast.makeText(this, "Update -> Latitude:" + mLastLocation.getLatitude()+", Longitude:"+mLastLocation.getLongitude(),Toast.LENGTH_LONG).show();

    }

    protected void stopLocationUpdates() {
        if (mGoogleApiClient != null) {
            LocationServices.FusedLocationApi.removeLocationUpdates(
                    mGoogleApiClient, this);
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        stopLocationUpdates();
    }

    @Override
    protected void onStop() {
        super.onStop();

        if (mGoogleApiClient != null) {
            mGoogleApiClient.disconnect();
        }


    }
  }