Techode

Tag: AS3

  • Blackberry Playbook App Clinic’s are here !

    The Blackberry Playbook App Clinic’s are here ! Your one stop destination to get those apps onto the Blackberry Playbook. The App Clinic’s, organized by various Flex user groups, are happening across major Indian cities over this week and the next.

    What is it ?
    If you have been longing to get your app onto the Blackberry Playbook, have a cool app idea, if you are a enthusiastic Flex / Actionscript developer, or never had an opportunity to try out the new Flex 4.5 SDK or the new Flash Builder 4.5.1, Blackberry Playbook App Clinic’s are for you !
    The clinic kick-starts with a presentation on building Flex/Air Apps for the BlackBerry PlayBook. Experts from Adobe India and RIM will be present for the rest of the event at the venue to drive out your doubts and help you build apps seamlessly.

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  • Toast on AIR for Android

    Here’s a component which behaves as a ‘Toast’ for AIR applications running on Android. The component can essentially be used across any Flex application, since it is an ActionScript class.

    For those of you who don’t know, Toast is the small transparent alert that pop’s up (and doesn’t block your UI) when u set an alarm on Android phones !

    Toast on AIR for Android

    In the pic above, the text ‘Enter Required Fields’ appears in a ‘Toast’

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  • Hello World for a Flex Starter

    Here is a Flex Tutorial I’m writing for a couple of my friends. While the Videos on ‘Learn Flex in a week’ and “Test drive Flex in 1 hour” serve as good tutorials, here is an application I have attempted to build, which serves as an example for a developer trying out flex for the first time.

    Get yourself a Flash Builder to start off. A 60-day trial is available here

    The application demonstrates essential implementations like connecting to a WebService, SQLite Database and UI practices, a developer needs to be aware of prior to building a Flex application. This is brought about with 4 components, demonstrating the implementations below,

    1) Displaying Hello World.
    2) Displaying Hello World with a better UI (PopUp) from a XML file.
    3) Displaying Hello World from a Webservice (REST).
    4) Displaying Hello World from a Webservice that pushes data into a SQLite Database.

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  • Flex – Validate Email Address against the Mail Server

    Here is a small piece of code I wrote to demonstrate Interacting with a Command, through an Event while using a Cairngorm Framework.

    The application connects to a WSDL webservice via Flash Builder 4 Data/Services to validate an Email address against the Email Server. Doesn’t work well with domains with a ‘Catch-All’ email address though !
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  • Flex Cairngorm – Interacting with a Command, through an Event

    Cairngorm is a lightweight micro-architecture framework for Rich Internet Applications built in Flex or AIR, defining best-practices for a RIA. Read More

    When a Cairngorm command requires parameters to call the required delegate, a common (bad) practice is to fetch parameters from View Components / Calculate or Query from inside the Cairngorm Command, and end up writing complicated / un-understandable code inside Command files, when a Cairngorm event is being dispatched from > 1 AS files.

    But isn’t all this going against the very purpose of using the Cairngorm architecture?
    Why not have parameters passed to a Cairngorm Event every time its dispatched, and stay away from mixing C with M and V in a MVC Framework?

    This post explains how you pass parameters to a Cairngorm command at runtime, via a Cairngorm Event.
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  • Flex – Paginated Datagrid

    Here is a small component i wrote for implementing a paginated Datagrid on flex.
    This component extends dataGrid, displaying only a set of records at a time, thereby organizing the entire collection into ‘pages’.
    This component arranges the collection specified under the ‘dataProvider’ attribute into ‘pages’.

    • Displays a footer at the bottom
    • Indicates currently displayed records
    • 2 navigation buttons (Previous, Next)

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