Why is it reloading again when orientation is changed on android

Hi I'm having a weird thing in my app. Whenever I change the orientation to portrait to landscape or vice versa. The window reload again. Here's my code:

Ti.include('../common.js');
var nowshowingWin = Ti.UI.currentWindow;
var url = 'myurl.com';
var json;
var rowData = [];
var table = Ti.UI.createTableView();
 
function getMovies(){   
    var xhr = Ti.Network.createHTTPClient({
        onload: function(e) {
        Ti.API.debug(this.responseText);
        alert('Hello World');
        successConnection();
        json = JSON.parse(this.responseText);
 
        for (i = 0; i < json.length; i++){
            var bgcolor = (i % 2) == 0 ? '#FFF' : '#EEE';
 
            var row = Ti.UI.createTableViewRow({
                height:150,
                backgroundColor:bgcolor,
                className: "nowShowingRow",
                width: Titanium.UI.FILL,
                backgroundFocusedColor: "#b2cb39",
                focusable: true
            });
 
            var movie = json[i];
 
            var movie_thumb = Ti.UI.createImageView({
                image: movie.thumb_poster,
                left:15,
                top:10,
                bottom: 15,
                height: 130,
                width: 100,
                touchEnabled: false
            });
 
 
            var movie_label = Ti.UI.createLabel({
                text: movie.title,
                left:120,
                top: '5',
                horizontalWrap: true,
                width: '100%',
                height: '25' ,
                textAlign:'left',
                color: '#000',
                touchEnabled: false,
                font: {
                    fontFamily:'HelveticaNeue-Bold',
                fontSize:18,
                fontWeight:'bold',
                            ellipsize: true
                }
            });
 
            var cast_label = Ti.UI.createLabel({
                text: movie.casts,
                horizontalWrap: true,
                left:120,
                height:'20',
                width: '100%',
                ellipsize: 'true',
                top: '30',
                textAlign:'left',
                color:'#444444',
                touchEnabled: false,
                font: {
                    fontSize:15
                }
            });
 
 
            var genre_label =  Ti.UI.createLabel({
                text: (movie.genres ? movie.genres : "-"),
                left:120,
                width: '100%',
                ellipsize: true,
                top: '45',
                bottom:15,
                height:30,
                textAlign:'left',
                color:'#444444',
                touchEnabled: false,
                font: {
                    fontSize:15
                }
            });
 
 
            var director_label = Ti.UI.createLabel({
                text: 'Directed by ' + movie.director,
                left:120,
                width:'100%',
                ellipsize: true,
                horizontalWrap: true,
                top: '72',
                height: 20,
                textAlign:'left',
                color:'#444444',
                touchEnabled: false,
                font: {
                    fontSize:15
                }
            });
 
            var criticTomatoImage = "";
 
            if(parseInt(movie.critics_score) >= 60) {
                criticTomatoImage = "../images/rt-tomato.png";
            } else {
                criticTomatoImage = "../images/rt-tomato-splat.png";
            }
 
            var rtCritic = Ti.UI.createImageView({
                image: criticTomatoImage,
                left:120,
                right: 15,
                top:'95',
                height:15,
                width:15,
                touchEnabled: false
            });
 
 
            var rtCriticScore = Ti.UI.createLabel({
                text: movie.critics_score + '% Critic',
                left: 140,
                top: '90',
                height:25,
                right: 50,
                textAlign:'left',
                color:'#444444',
                touchEnabled: false,
                font: {
                    fontSize:12
                }
            });
 
 
            // adding objects to the row
            row.add(movie_thumb);
            row.add(movie_label);
            row.add(cast_label);
            row.add(genre_label);
            row.add(director_label);
            row.add(rtCritic);
            row.add(rtCriticScore);
 
 
            // adding movid objects to the row
            row.movie = movie;
            rowData[i]= row;
            }
            table.setData(rowData);
        },
        onerror: function(e) {
            Ti.API.debug(e.error);
        alert('Hello World');
            failedConnection();
        },
            timeout:5000
    });
 
    xhr.open("GET", url);
    xhr.send();
}
 
 
 
 
nowshowingWin.addEventListener('open', function() {
    nowshowingWin.add(table);
    getMovies();
    nowshowingWin.backgroundColor = "#FFFFFF";      
});
 
 
table.addEventListener('click', function(e){
  var movieWin = Ti.UI.createWindow({
    url: 'movie.js',
    title: 'Now Showing',
  });
  movieWin.movie = e.row.movie;
  Ti.UI.currentTab.open(movieWin, {animated:true} );
});