PhoneGap for Windows Phone,iPhone & Android apps with JavaScript,HTML 5 & CSS 3


  • What is PhoneGap? [http://phonegap.com]
  • PhoneGap is an open – source Mobile Development framework originated by Nitobi Software in iPhoneDevCamp at San Francisco, 2008.
  • Bridges the gap between the SDKs & native apps & Mobile Web apps.

 

  • How Does PhoneGap Work?
  • UIWebView object for iPhone
  • WebView object with Android
  • TemplateView with Windows Phone
  • Interpreted Language: JavaScript
  • Deployment: AppStore , Android Market, Windows Phone Marketplace.
  • Write your first application with PhoneGap for iPhone,Android & Windows Phone :
  • Webkit
  • BlackBerry 6+, Palm WebOS
  • HTML 5 with Canvas, Databases and Geolocation
  • CSS3 with Transitions, Gradients and Rounded Corners.
  • Cross-Domain security policy does not apply:
  • $.getJSON(‘http://search.twitter.com/trends/current.json’)

 

  • JQTouch:(http://jqtouch.com)
  • A JQuery plugin for Mobile Web development.
  • For iOS, Android & BlackBerry supports Page Transitions(CSS 3)
  • Page History
  • Toolbar
  • Forms
  • Home screen Icons

JQTouch Sample  Code:

<title>JQuery for i-Phone</title>

<meta name=”apple-mobile-web-app-capable”content=”yes”/>

<meta name=”viewport”content=”width=device-width; initial-scale=1.0″/>

<link type=”text/css”rel=”Stylesheet”media=”screen”href=”jqtouch.css”/>

<link type=”text/css”rel=”Stylesheet”media=”screen”href=”default/theme.css”/>

<script type=”text/javascript”src=”jquery.js”></script>

<script type=”text/javascript”src=”jqtouch.js”></script>

<script type=”text/javascript”>

var jQT = $.jQTouch({

icon:‘kilo.png’,

statusBar:‘black’

});

</script>

 

  • IScroll: Provides a scroll content inside a fixed width/height element
  • Android >= 1.5, iPad >= 3.2 , iPhone >=2.0
  • Uses touch JavaScript events:
  • touchstart
  • touchmove
  • touchend
  • Persistence.js:
  • Asynchronus Javascript object-relational mapper library
  • Can be used in web browser:
  • HTML 5 WebSQL database(WebKit)
  • Google Gears(Firefox/IE)
  • Also on the server using node.js:
  • Node-mysql

 

  • Processing.js
  • Port of the processing language to JavaScript
  • Uses canvas element
  • Good replacement for flash
  • Can also used directly as a JavaScript library 

 

  • Meta Tags:
  • Viewport- Changes the window size used when displaying on iOS/Android
  • <meta name=”viewport” content=”width=320,user-scalable=0″ />
  • Full Screen mode:
  • <meta name=”apple-mobile-web-app-capable” content=”yes”>
  • Style of the status bar:
  • <meta name=”apple-mobile-web-app-status-bar-style” content=”black”>

 

  • Link Tags:
  • Add icon to bookmark
  • <link rel=”apple-touch-icon” href=”/custom_icon.png” />
  • Icon with no gloss : <link rel=”apple-touch-icon-precomposed” href=”/icon.png” />
  • Startup Screen: <link rel=”apple-touch-startup-image” href=”/startup.png”>

 

  • Install PhoneGap:
  • iPhone:
  • Install XCode plus iOS SDK
  • Use installer PhoneGap provides
  • Select PhoneGap when making a new project with Xcode

 

  • Android:
  • Install android SDK and add to $PATH
  • Run “android” to grab latest version
  • Setup Eclipse with Android plugin
  • Add PhoneGap.jar to project

 

  • Basic PhoneGap API:
  • Accelerometer
  • Camera
  • Contacts
  • Device
  • Events
  • Geolocation
  • Network
  • Notification
  • Android Menu/Back Buttons
  • Read through Phonegap.js

 

  • Writing iPhone plugins:
  • Create new header file(“Test.h”)
  • Extend new ObjC class(“Test.m”)
  • Import new header file
  • Call ObjC from JavaScript
  • PhoneGap.exec(“Text.test”);
  • Update JS from ObjC
  • [webView stringByEvaluatingJavaScriptFromString:@”alert(‘test’)”]

 

  • Writing Android plugins:
  • WebView features:
  • addJavascriptInterface(JavaObject,”NameInJs”)
  • Allows Java method to be called directly by JavaScript
  • PhoneGap 0.9.2 features JavaScript controlled plugin manager
  • PluginManager.addService(
  • “HelloWorld”,
  • “com.phonegap.HelloWorldPlugin.HelloWorld );”
  • PhoneGap.execAsync(win,fail,”HelloWorld”,”sayHello”,[]);
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About Anindita
Anindita Basak is working as Big Data Cloud Consultant in Microsoft. Worked in multiple MNCs as Developer & Senior Developer on Microsoft Azure, Data Platform, IoT & BI , Data Visualization, Data warehousing & ETL & of course in Hadoop platform.She played both as FTE & v- employee in Azure platform teams of Microsoft.Passionate about .NET , Java, Python & Data Science. She is also an active Big Data & Cloud Trainer & would love share her experience in IT Training Industry. She is an author, forum contributor, blogger & technical reviewer of various books on Big Data Hadoop, HDInsight, IoT & Data Science, SQL Server PDW & PowerBI.

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