Android and IOS: Read/write contents (100 objects) to file and generate Table view. CRUD operation of a file.

App.js

/* Here create a file you can perform here read,insert,update,delete that means CURD operation */

var file = require('ui/common/FileView');

var fileView = new file();

fileView.open();

file.js

// File create and delete operation here 

exports.addValue = function(title, description) {

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

	f.write(title + '\n' + description + '\n');

};

exports.add = function(title, description) {

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

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

};


exports.deleteData = function() {
	var f = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'file.txt');
	f.deleteFile();
};


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);
 if ( contents instanceof Object) {
  return contents.text;
 } else
  return '';
};

FileView.js

//This is the main View that shows inserted data in a table view row.

function FileView() {

	var win = Ti.UI.createWindow({
		layout : 'vertical',
		backgroundColor : '#000',
		title : 'Local File System',
		navBarHidden : false
	});

	// Create a Label.
	var titlelabel = Ti.UI.createLabel({
		text : 'Title',
		color : '#FFF',
		font : {
			fontSize : 20
		},
		height : Ti.UI.SIZE,
		width : Ti.UI.FILL,
		top : 10,
		left : 10,

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

	// Create a TextField.
	var title = Ti.UI.createTextField({
		height : Ti.UI.SIZE,
		top : 10,
		left : 10,
		width : Ti.UI.FILL,
		hintText : 'Enter title ',
		keyboardType : Ti.UI.KEYBOARD_DEFAULT,
		returnKeyType : Ti.UI.RETURNKEY_DEFAULT,
		borderStyle : Ti.UI.INPUT_BORDERSTYLE_ROUNDED
	});

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

	// Create a Label.
	var descriptionLabel = Ti.UI.createLabel({
		text : 'Description:',
		color : '#FFF',
		font : {
			fontSize : 20
		},
		height : Ti.UI.SIZE,
		width : Ti.UI.FILL,
		top : 10,
		left : 10,
	});
	// Add to the parent view.
	win.add(descriptionLabel);

	// Create a TextField.
	var description = Ti.UI.createTextField({
		height : Ti.UI.SIZE,
		top : 10,
		left : 10,
		width : Ti.UI.FILL,
		hintText : 'Enter Description ',
		keyboardType : Ti.UI.KEYBOARD_DEFAULT,
		returnKeyType : Ti.UI.RETURNKEY_DEFAULT,
		borderStyle : Ti.UI.INPUT_BORDERSTYLE_ROUNDED
	});

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

	var actionView = Ti.UI.createView({
		height : 50,
		width : Ti.UI.FILL,
		top : 0
	});

	win.add(actionView);

	// Create a Button.
	var save = Ti.UI.createButton({
		title : 'save',
		height : 50,
		width : Ti.UI.SIZE,
		left : 10
	});

	//var data = [];
	// Listen for click events.
	save.addEventListener('click', function() {
		var File = require('lib/file');
		//File.add(title.value, description.value);
		if (title.value == '' || description.value == '') {
			alert('Please fillup Fields');
		} else {
			if (File.readData().length > 0) {
				File.add(title.value, description.value);
			} else {
				File.addValue(title.value, description.value);
			}
			Ti.App.fireEvent('tableUpdate');
		}

		//alert(File.readData());

		title.setValue('');
		description.setValue('');
		title.blur();

	});
	// Add to the parent view.
	actionView.add(save);

	// Create a Button.
	var update = Ti.UI.createButton({
		title : 'update',
		height : 50,
		width : Ti.UI.SIZE,
		right : 10
	});
	// Listen for click events.
	update.addEventListener('click', function() {
		var titleVal = Ti.App.Properties.getString('title');
		var details = Ti.App.Properties.getString('description');
		//alert(title + '\n' + details);

		var word = wordArray();
		//alert(word.length);
		var File = require('lib/file');

		if (title.value == '' || description.value == '') {
			alert('please update somethings');

		} else {
			for (var i = 0; i < word.length; i++) {
				if (titleVal == word[i].title && details == word[i].description) {
					var data = ( {
						title : title.value,
						description : description.value
					});
					word.splice(i, 1, data);
					var File = require('lib/file');
					File.deleteData();
					for (var i = 0; i < word.length; i++) {
						//alert(word[i].title + '\n' + word[i].description);
						if (File.readData().length > 0) {
							File.add(word[i].title, word[i].description);
						} else {
							File.addValue(word[i].title, word[i].description);
						}

					};
					Ti.App.fireEvent('tableUpdate');
					title.setValue('');
					description.setValue('');
					title.blur();
				}
			};
		}

	});
	// Add to the parent view.
	actionView.add(update);

	// Create a TableView.
	var tableView = Ti.UI.createTableView({
		top : 0,
	});
	win.add(tableView);

	var wordArray = function() {
		var word = [];
		var File = require('lib/file');
		var text = File.readData().split('\n');
		Ti.API.info('textLength=' + text.length);

		for (var i = 0; i < text.length - 1; i = i + 2) {
			//Ti.API.info('textValue=' + text[i]);
			word.push({
				title : text[i],
				description : text[i + 1]
			});

		};

		return word;
	};

	Ti.App.addEventListener('tableUpdate', refresh);
	refresh();
	function refresh() {
		tableData = [];

		var word = wordArray();
		//alert('function ar modha=' + word.length);
		for (var i = 0; i < word.length; i++) {

			var row = Ti.UI.createTableViewRow({
				className : 'data', // used to improve table performance
				selectedBackgroundColor : 'white',
				rowIndex : i, // custom property, useful for determining the row during events
				height : 'auto',
				titleValue : word[i].title,
				details : word[i].description,

			});

			var titleValue = Ti.UI.createLabel({
				color : 'red',
				font : {
					fontFamily : 'Arial',
					fontSize : 25,
					fontWeight : 'normal'
				},
				text : word[i].title,
				top : 30,
				left : 10,
				right : 75

			});
			row.add(titleValue);

			var discriptionText = Ti.UI.createLabel({
				color : 'red',
				font : {
					fontFamily : 'Arial',
					fontSize : 25,
					fontWeight : 'normal'
				},
				text : word[i].description,
				top : 60,
				left : 10,
				right : 60

			});
			row.add(discriptionText);

			var del = Ti.UI.createButton({
				title : 'Del',
				right : 2,
				height : 40,
				id : "delrow",
				width : 50,
				myrow : row
			});
			row.add(del);

			tableData.push(row);

		}
		tableView.setData(tableData);
	}


	tableView.addEventListener('click', function(e) {
		//alert('title:' + e.rowData.title + '\nDescription:' + e.rowData.details);
		if (e.source.id == "delrow") {
			var word = wordArray();
			//alert(word.length);
			var File = require('lib/file');
			for (var i = 0; i < word.length; i++) {
				if (e.rowData.titleValue == word[i].title && e.rowData.details == word[i].description) {
					word.splice(i, 1);
					var File = require('lib/file');
					File.deleteData();
					for (var i = 0; i < word.length; i++) {
						//alert(word[i].title + '\n' + word[i].description);
						if (File.readData().length > 0) {
							File.add(word[i].title, word[i].description);
						} else {
							File.addValue(word[i].title, word[i].description);
						}

					};
					Ti.App.fireEvent('tableUpdate');
					//alert(word.length);
				}
			};

		} else {
			title.setValue(e.rowData.titleValue);
			description.setValue(e.rowData.details);
			Ti.App.Properties.setString('title', e.rowData.titleValue);
			Ti.App.Properties.setString('description', e.rowData.details);

		}

	});
	//   Add to the parent view.

	return win;
}

module.exports = FileView;