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Flash CS3 Professional Beyond the Basics
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Using event listeners


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Flash CS3 Professional Beyond the Basics

with Todd Perkins

Video: Using event listeners

Now we'll talk about event listeners. Event listeners connect objects and events to functions that handle those events. If you're following along I'm working in 04_listeners.FLA in the Chapter 02 folder in the Exercise Files folder. This file has two layers, one called actions and one called button. The button layer contains an instance of a button called BTNbutton. In the instance name field in the Property inspector with the button selected I'm going to click and type an instance name for this button. I'm going to give this a simple instance name of my_btn.
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  1. 3m 30s
    1. Welcome
      1m 20s
    2. Getting the most from this training
      1m 20s
    3. Using the exercise files
      50s
  2. 15m 28s
    1. Managing digital assets
      4m 9s
    2. Creating custom keyboard shortcuts
      5m 1s
    3. Creating custom color swatches
      3m 41s
    4. Creating a custom template
      2m 37s
  3. 14m 38s
    1. Working with variables
      3m 41s
    2. Using functions
      3m 30s
    3. Working with events
      2m 11s
    4. Using event listeners
      2m 42s
    5. Working with arrays
      2m 34s
  4. 29m 41s
    1. Understanding dynamic text fields
      2m 37s
    2. Loading text from an external file
      6m 42s
    3. Reading HTML from a text field
      5m 29s
    4. Applying CSS with ActionScript
      7m 0s
    5. Applying external CSS to a text field
      7m 53s
  5. 45m 27s
    1. Masking dynamic text
      4m 59s
    2. Dragging the Scroll Bar
      7m 3s
    3. Calculating a scroll percent
      5m 20s
    4. Setting scroll boundaries
      4m 9s
    5. Connecting the ScrollBar to the text field
      2m 55s
    6. Easing the text with the ScrollBar
      4m 12s
    7. Scrolling the text with buttons
      2m 38s
    8. Animating the scrolling text with the buttons
      4m 26s
    9. Setting boundaries for the scrolling text
      4m 26s
    10. Easing the text using the buttons
      1m 37s
    11. Connecting the ScrollBar to the Scroll buttons
      3m 42s
  6. 20m 46s
    1. Organizing a complex object into layers
      1m 51s
    2. Duplicating MovieClips
      1m 29s
    3. Undocking the timeline
      1m 20s
    4. Animating a complex MovieClip
      4m 36s
    5. Creating an animated Hinge effect
      5m 13s
    6. Creating complex animations
      6m 17s
  7. 28m 1s
    1. Controlling objects with buttons
      4m 6s
    2. Understanding frame labels
      3m 25s
    3. Using buttons to navigate labeled frames
      2m 30s
    4. Nesting code within MovieClips
      5m 8s
    5. Adding sound to the application
      2m 34s
    6. Adding drag interactivity to the robot
      6m 1s
    7. Animating the dragged robot
      4m 17s
  8. 20m 3s
    1. Understanding components
      2m 30s
    2. Using components to setup a form
      3m 45s
    3. Setting up the form to send an email
      3m 38s
    4. Working with form variables
      6m 11s
    5. Skinning components
      3m 59s
  9. 27m 40s
    1. Using transparency in a video
      4m 16s
    2. Working with embedded video
      3m 38s
    3. Animating a VideoClip
      2m 53s
    4. Creating an advanced animation with video
      2m 40s
    5. Working with the bitmap data class
      3m 37s
    6. Working with the bitmap class
      1m 40s
    7. Copying the video to create a reflection
      1m 35s
    8. Reflecting the video
      2m 42s
    9. Enhancing a video reflection with a mask
      4m 39s
  10. 1h 38m
    1. Viewing the finished MP3 player
      1m 45s
    2. Understanding the project flow
      2m 52s
    3. Preparing to build the MP3 player
      5m 11s
    4. Understanding classes and packages
      5m 32s
    5. Creating the MP3 player class
      9m 59s
    6. Loading sounds from external files
      9m 20s
    7. Accessing ID3 tag information
      6m 11s
    8. Controlling sound playback with Play and Pause buttons
      11m 3s
    9. Changing tracks
      12m 1s
    10. Displaying the current volume
      9m 33s
    11. Changing the volume
      6m 40s
    12. Wiring the progress bar
      8m 4s
    13. Building the progress bar slider
      10m 4s
  11. 5m 36s
    1. Making Flash movies accessible
      1m 49s
    2. Adding a name and description to your Flash movie
      52s
    3. Accessibility and text fields
      2m 55s
  12. 12m 2s
    1. Understanding Flash Mobile
      35s
    2. Exploring Device Central
      1m 45s
    3. Updating Device Profiles
      1m 7s
    4. Creating a Flash file from Device Central
      2m 7s
    5. Creating and testing Flash Lite applications
      2m 48s
    6. Downloading the Flash Lite player for Windows Mobile
      1m 44s
    7. Getting a Flash Lite application onto your phone
      1m 56s
  13. 27s
    1. Goodbye
      27s

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Flash CS3 Professional Beyond the Basics
5h 21m Intermediate Dec 06, 2007

Viewers: in countries Watching now:

Through several hands-on tutorials, instructor Todd Perkins shows how to best build dynamic, streamlined sites using Flash CS3 Professional. Learn how to create custom keyboard shortcuts, apply advanced text techniques such as animating scrolling text with custom easing controls, and using advanced animation techniques. Flash CS3 Professional Beyond the Basics covers many challenging features, including adding complex interactivity to a Flash CS3 project and getting Flash content on a phone. Exercise files accompany the tutorials.

Topics include:
  • Customizing Flash CS3 and managing assets Working with ActionScript variables Understanding dynamic text fields Adding interactivity to dynamic text Animating a complex MovieClip Using buttons to navigate labeled frames Working with components Exploring advanced audio and video techniques Creating accessible Flash content Understanding Flash Mobile
Subject:
Web
Software:
Flash Professional
Author:
Todd Perkins

Using event listeners

Now we'll talk about event listeners. Event listeners connect objects and events to functions that handle those events. If you're following along I'm working in 04_listeners.FLA in the Chapter 02 folder in the Exercise Files folder. This file has two layers, one called actions and one called button. The button layer contains an instance of a button called BTNbutton. In the instance name field in the Property inspector with the button selected I'm going to click and type an instance name for this button. I'm going to give this a simple instance name of my_btn.

Then I'm going to select the first keyframe in the actions layer and open the Actions panel using Option+F9 on the Mac or F9 on the PC. In the Actions panel notice the code that we wrote in last movie is here. This defines the function "button clicked" that receives a Mouse event, and simply traces 'button clicked.' So below the closed curly brace of this function, I'm going to connect the button on the stage to this function. Let's type my_btn.addEvent, with capital E, Listener, with a capital L, all one word and then in parentheses we need to pass in two values.

First the type of event. The type of event is a MouseEvent, with a capital M for mouse and a capital E for event. and then CLICK all caps. So a listener connects an object, in this case my_btn to an event, which is MouseEvent.CLICK. Events listeners not only connect objects with events, they connect an object and an event to an event handler function. To do that with we have to pass in a second parameter inside of the parentheses of this add event listener line of code.

So after MouseEvent.CLICK type a comma and a space and then type the name of the function that we want to run when the button gets clicked. The function name is buttonClicked. I'm getting that from line 1 in my code. Type buttonClicked, capital C. Make sure to close out the parentheses and type a semicolon to end the statement. So the line of code we just wrote adds an event listener to my_btn, that's the button on the stage, and the event the button is listening for or waiting for is a mouse click.

In Flash's language that's MouseEvent.CLICK. Once that button gets clicked Flash will run a function called buttonClicked, which we defined in the last movie on lines 1 through 4 in my code. So once the button is clicked we'll see button clicked in the Output window. Now let's test the movie to see this in action. The keyboard shortcut is Command+Return on the Mac, Ctrl+Enter on the PC. I'm going to click the button and watch the message in the Output window display button clicked. And there's a look at working with event listeners.

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