Titanium SDK - Android - Show activity indicator android download files

ti-download-files-with-activity.js

if (Ti.Platform.osname == 'android') {

	var filesToDownload = [
		{url: "http://site.com/image1.jpg"},
		{url: "http://site.com/image2.jpg"},
		{url: "http://site.com/image3.jpg"}
	];
	
	var totalFiles = filesToDownload.length;
	
	var activityWindow = Ti.UI.createWindow({
		backgroundColor: 'white',
		fullscreen: true 
	});
	
	var activityIndicator = Ti.UI.createActivityIndicator({
		color: '#555',
		font: {fontFamily : 'Helvetica Neue', fontSize : 20},
		message: ' Downloading files...',
		style: Ti.UI.ActivityIndicatorStyle.DARK,
		height: Ti.UI.FILL,
		width: Ti.UI.FILL
	});
	activityWindow.add(activityIndicator);
	
	setTimeout(function() {
		
		activityIndicator.show();
		var totalDownloaded = 0;
		
		filesToDownload.forEach(function(fileToDownload, index) {
			// Get file name from URL
			var fileName = fileToDownload.url.substr(fileToDownload.url.lastIndexOf('/') + 1);
			
			// Start download of file
			util.downloadFile(fileName, fileToDownload.url, function() {
				totalDownloaded++;
				if (totalDownloaded == totalFiles) {
					activityIndicator.hide();
					activityWindow.close();
				}
			}, function(progress) {
				Ti.API.info("Progress: " + Math.round(progress * 100) + "%");
			});
		});
	}, 1000);
}

win.open();
activityWindow.open();

util.js

var util = {};

util.getOrientation = function(o, previousOrientation) {
    switch (o) {
        case Titanium.UI.PORTRAIT: return 'portrait';
        case Titanium.UI.UPSIDE_PORTRAIT: return 'portrait';
        case Titanium.UI.LANDSCAPE_LEFT: return 'landscape';
        case Titanium.UI.LANDSCAPE_RIGHT: return 'landscape';
        default: return (previousOrientation == 'portrait') ? 'portrait' : 'landscape';
    }
};

util.downloadFile = function(filename, url, downloadCompleted, downloadProgress) {
    var fileData = {file:filename, url:url, path:null};
    var directory = Titanium.Filesystem.applicationDataDirectory;
    var file = Titanium.Filesystem.getFile(directory, filename);
    
    if (!file.exists()) {
        if (Titanium.Network.online) {
            var client = Titanium.Network.createHTTPClient();
            client.setTimeout(10000);
            client.onload = function() {
                if (client.status == 200) {
                    var f = Titanium.Filesystem.getFile(directory, filename);
                    f.write(this.responseData);
                    var fcontent = f.read();
                    fileData.path = directory + Titanium.Filesystem.separator;
                } else {
                    fileData.error = 'File not found at ' + url;
                }
                downloadCompleted();
            };
            
            client.ondatastream = function(e) {
                if (downloadProgress) {
                	downloadProgress(e.progress);
                }
            };
            client.error = function(e) {
                fileData.error = e.error;
                downloadCompleted();
            };
            client.open('GET', url, false);
            client.send();
        } else {
            fileData.error = 'No internet available';
            downloadCompleted();
        }
    } else {
    	downloadCompleted();
    }
};