Android and IOS: User Locations tracking apps (last 100 location)

App.js

/* Here if you enable your location service of your set and internet connection it takes the locatio from GPS and save in a
 file and  it will be shown on a tableView row*/

var location = require('ui/common/UserLocation');

var userLocation = new location();

userLocation.open();

file.js

exports.addValue = function(place) {

	var f = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'file.txt');

	f.write(place + '\n');

};

exports.add = function(place) {

	var f = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'file.txt');

	f.write(place + '\n', true);

};

exports.readData = function() {
	var f = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'file.txt');
	var contents = f.read();
	Ti.API.info('Output as a blob: ' + contents);
	// useful if contents are binary
	Ti.API.info('Output text of the file: ' + contents.text);

	return contents.text;

};

UserLocation.js

// This is the main view where show your current location. In a tableView row.

function geoLoction() {

	var win = Titanium.UI.createWindow({
		title : 'User Location',
		backgroundColor : '#000',
		navBarHidden : false,
		layout : 'vertical'
	});

	// Create a Label.
	var userLocation = Ti.UI.createLabel({
		text : 'user Location',
		color : '#FFF',
		font : {
			fontSize : 20
		},
		height : Ti.UI.SIZE,
		width : Ti.UI.SIZE,
		top : 10,
	});

	// Add to the parent view.
	win.add(userLocation);

	var reverseGeoLabel = Titanium.UI.createLabel({
		text : 'Your Current Location',
		font : {
			fontSize : 15,
			fontWeight : 'bold'
		},
		color : '#fff',
		top : 10,
		left : 10,
		height : Ti.UI.SIZE,
		width : Ti.UI.SIZE
	});
	win.add(reverseGeoLabel);

	var reverseGeo = Titanium.UI.createLabel({
		text : '',
		font : {
			fontSize : 12
		},
		color : '#fff',
		top : 10,
		left : 10,
		height : Ti.UI.SIZE,
		width : Ti.UI.SIZE
	});
	win.add(reverseGeo);

	var tableView = Ti.UI.createTableView({
		top : 10
	});
	// Add to the parent view.
	win.add(tableView);

	var dataArray = function() {
		var data = [];
		var File = require('lib/file');
		var locationData = File.readData().split('\n');
		Ti.API.info('locationDataLength=' + locationData.length);
		var sum = 0;
		for (var i = locationData.length - 2; i > 0; i--) {

			data.push(locationData[i]);
			sum++;
			if (sum == 100) {
				break;
			}
		};

		return data;
	};

	var locationData = dataArray();
	if (locationData.length > 0) {
		for (var i = 0; i < locationData.length; i++) {
			tableView.appendRow({
				title : i+'.'+locationData[i],
				backgroundColor : 'transparent',
				color : "red"
			});

		};
	}

	setInterval(function() {

		updateLocation();

	}, 7000);

	updateLocation();

	function updateLocation() {
		if (Ti.Geolocation.locationServicesEnabled) {
			Ti.Geolocation.purpose = 'Get Current Location';
			Ti.Geolocation.accuracy = Ti.Geolocation.ACCURACY_BEST;
			Ti.Geolocation.distanceFilter = 10;
			Ti.Geolocation.preferredProvider = Ti.Geolocation.PROVIDER_GPS;

			Titanium.Geolocation.purpose = 'Get Current Location';
			Titanium.Geolocation.addEventListener('location', function(e) {
				if (e.error) {
					Ti.API.error('Error: ' + e.error);
				} else {

					var longitude = e.coords.longitude;
					var latitude = e.coords.latitude;
					Ti.Geolocation.reverseGeocoder(latitude, longitude, function(e) {
						var places = e.places;

						//reverseGeo.text = places[0].address;
						var place = places[0].address;
						reverseGeo.setText(place);
						var File = require('lib/file');
						if (File.readData().length > 0) {
							File.add(place);
						} else {
							File.addValue(place);
						}

					});
				}
			});
		} else {
			alert('Please enable location services');
		}

	}

	return win;
}

module.exports = geoLoction;