MainActivity.java

package com.couchbase.cityexplorer;

import android.app.Activity;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.Bundle;
import android.widget.TextView;

import com.couchbase.lite.CouchbaseLiteException;
import com.couchbase.lite.Document;
import com.couchbase.lite.util.Log;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationServices;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

public class MainActivity extends Activity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

    public static final String TAG = "CityExplorer";

    GoogleApiClient mGoogleApiClient;

    TextView cityLabel;
    TextView longitudeLabel;

    SyncManager syncManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        cityLabel = (TextView) findViewById(R.id.latitudeLabel);
        longitudeLabel = (TextView) findViewById(R.id.longitudeLabel);

        syncManager = new SyncManager(this);

        buildGoogleApiClient();
    }

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

    @Override
    public void onConnected(Bundle bundle) {
        Location mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);

        if (mLastLocation != null) {
            Geocoder geocoder = new Geocoder(this, Locale.getDefault());

            List<Address> addresses = null;
            try {
                addresses = geocoder.getFromLocation(mLastLocation.getLatitude(), mLastLocation.getLongitude(), 1);
            } catch (IOException e) {
                e.printStackTrace();
            }

            if (addresses != null && addresses.size() > 0) {
                String city = addresses.get(0).getLocality();
                cityLabel.setText(city);

                Document document = syncManager.getDatabase().getDocument("james");

                Map<String, Object> properties = new HashMap<>();
                if (document.getProperties() != null) {
                    properties.putAll(document.getProperties());
                }
                properties.put("type", "profile");
                properties.put("city", city);

                try {
                    document.putProperties(properties);
                    Log.d(TAG, "Saved document with properties :: %s", document.getProperties().toString());
                } catch (CouchbaseLiteException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {

    }
}