Load a webpage in Adobe AIR

By | March 2, 2011

This example shows how to load a webpage inside Adobe AIR, For this first you have to place an HTML control in your design for loading the html content. Create an page “index.html” inside the application directory of your current project and add some Html content to it. After that copy the following code to your source file.… Read More »

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Dynamically Load CSS in Adobe AIR/FLEX / Load css in Adobe AIR/FLEX using Class.

By | March 2, 2011

This example shows how to dynamically load css in Adobe AIR / FLEX. Here in this example Panel id the tag name for the panel control. Drag a panel control to your design then copy the code to your source file. “myTabs” is the class for the CSS. Panel { borderColor: #CBE0FF; border-style:solid; borderThickness: 1; borderThicknessLeft: 0; borderThicknessTop:… Read More »

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Client Side Form Validation – using JavaScript

By | March 1, 2011

Hi, JavaScript is mainly used for client side scripting. In client side scripting one of the thing which we are usually in need is Validation of Forms. We want to know the user , who is interacting with the form have already given the necessary details before submitting or saving etc. Here is a simple form validation example… Read More »

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Using ButtonBar in Adobe AIR/FLEX, A simple Example

By | March 1, 2011

Hello………. A button Bar is a convenient way to place your buttons in an application. It saves a lots of space in your application interface. Take a look at the following example which shows how to use the ButtonBar. An itemClickEvent is attached to each button in the ButtonBar. You can place as many buttons inside a button… Read More »

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Using Arrays in JavaScript – Basics

By | February 28, 2011

Hi… We all know, Arrays are nothing but variables which can hold all your variable values with a single name. Let’s see some basic operations of Arrays in JavaScript. To Create a New Array. Use the following code. This code of line created a new Array object called myArray. Adding Elements to myArray or or Accessing Array Elements… Read More »

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How to get a selected Item from a spinner in ANDROID?

By | February 28, 2011

We have come across this issue many times during programming to get a selected item in your combobox. ANDROID has built in functions to get the selected item from a spinner. Take a look at the snippet. Here my_spinner id the spinner variable and using getSelectedItem() which will return an object and by using toString() I am converting… Read More »

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How to add more than One HTML Document in a single Browser ?

By | February 28, 2011

Hi… There may arise certain situations where you need to include more than one HTML document in the same browser. But how? It’s simple. It’s by using FRAMES of HTML. FRAMES can be included inside FRAMESET. Let’s see an example. This will create two column frames in the browser with www.coderzheaven in one frame with 200 pixels, and… Read More »

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ProgressBar in ANDROID…..

By | February 28, 2011

Progress bars are our basic needs when we want to show something for a long time or some progress takes a long time and we want to show it’s progress. Keeping that in mind ANDROID also has built in progress views. There are basically two types of progress views in ANDROID. ProgressDialog.STYLE_SPINNER and ProgressDialog.STYLE_HORIZONTAL Take a look at… Read More »

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Toggle between Full Screen and normal Screen in Adobe AIR or FLEX.

By | February 27, 2011

Hi all……… We often need to toggle between fullscreen and normal screen in our application. The following code snippet helps you to toggle between these two screens in Adobe AIR or Flex. Here I am using StageDisplayState class to do both which has “stage.displayState = StageDisplayState.FULL_SCREEN” and ” stage.displayState = StageDisplayState.NORMAL” constants to do this.

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How to detect shake Gesture in your iPhone Cocos2D?

By | February 26, 2011

For detecting shake in a cocos2D program copy these lines to your layer class bool shaked_once; //default false self.isAccelerometerEnabled = YES; [[UIAccelerometer sharedAccelerometer] setUpdateInterval:1/60]; shaked_once = false; Then copy this function to the same file…. and you are done…….. -(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration { float THRESHOLD = 2; if (acceleration.x > THRESHOLD || acceleration.x < -THRESHOLD ||… Read More »

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Hide and Show a Text Using jQuery – Example

By | February 26, 2011

With jQuery manipulation of HTML & CSS can be done very easily. Here we are going to show how to Hide a line of text using jQuery & Show it back also. Let’s code speak first…. <html> <head> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("#hideButton").click(function(){ $("p").hide(); }); $("#showButton").click(function(){ $("p").show(); }); }); </script> </head> <body> <p>Hey! Click ‘Left’, I… Read More »

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Preventing Overriding in Java

By | February 25, 2011

Methods and variables can be ‘override’ in subclasses. (Yes, it’s a good feature too!). But what if we don’t want to ‘override’ our Methods and Variables in Java? It’s simple… Declare them using the keyword ‘final’ as modifier. That’s it. eg: So the value of myVariable can never be changed any way. Also for Classes/Methods. eg: It will… Read More »

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Creating Exceptions in JAVA

By | February 25, 2011

This is a simple custom exception in java. That is, we can create an exception by extending the exception class. The “throw new MyExcep” will throw an exception and the error message we specified will be displayed import java.lang.Exception; @SuppressWarnings(“serial”) class MyExcep extends Exception { MyExcep(String Errormsg) { super(Errormsg); // call Exception class error message } } public… Read More »

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Difference between & and * operator in C

By | February 24, 2011

A beginner to Pointers in C often perplexed by different operators & and * Let’s see what it really is and how simple it is. & – This operator gives ‘the address of’ a variable * – This operator gives ‘the value at address’ of a variable (Note! Note! Note! Not the other way round! By heart it… Read More »

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Difference between & and * operator in C

By | February 24, 2011

A beginner to Pointers in C often perplexed by different operators & and * Let’s see what it really is and how simple it is. & – This operator gives ‘the address of’ a variable * – This operator gives ‘the value at address’ of a variable (Note! Note! Note! Not the other way round! By heart it… Read More »

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String Functions in C

By | February 23, 2011

Let’s now briefly discuss about four essential String function used in C. We are going to discuss about a) strlen() b) strcpy() c) strcat() d) strcmp() Codes speak louder than words! Let’s see what these functions do in a simple C Program. #include main() { char stringOne[15] = “CoderzHeaven”; char stringTwo[] =”Codes”; char stringThree[15]; int varOne, varTwo; //Counting… Read More »

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Create PopUp Window in Adobe AIR / FLEX, A simple Example.

By | February 23, 2011

Below code shows how to create a new popUp window in Adobe AIR or FLEX. To create a new window “right click on the src folder and create a new MXML Component named Here “MyLoginForm” It should be aTitleWindow for the example below. How ever You can create other components, but the code accordingly must change. import mx.managers.PopUpManager;… Read More »

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FullScreen Event in Adobe AIR or FLEX

By | February 22, 2011

  The following simple code snippet explains how to get an eventListener for FullScreen Event in Adobe AIR or FLEX. The function “onScreenModeChange ” gets called when you maximizes your window. private function init():void { stage.addEventListener( FullScreenEvent.FULL_SCREEN, onEnteringFullScreenMode); } private function onEnteringFullScreenMode( e:FullScreenEvent ):void { if( e.fullScreen ) { // Do something on fullscreen…………… } else { // Do… Read More »

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Abstract Class in java

By | February 20, 2011

This example shows how a simple java abstract class works Here “Shape” is the abstract class abstract class Shape { abstract void initial(); // methods only defined….. abstract void display(); } class cube extends Shape { void initial() // Abstract Methods defined…. { System.out.println(“Hello !! “); } void display() { System.out.println(“How are you?”); } } public class Abstract… Read More »

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