MACROMEDIA FLASH 8-LEARNING ACTIONSCRIPT 2.0 IN FLASH, Руководство пользователя

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630 Working with Images, Sound, and Video
Creating a progress bar for loading FLV files with
ActionScript
You can create a progress bar to display the loading progress of an FLV file. For information
on loading FLV files into a SWF file, see
“Preloading FLV files” on page 609 . For other
information about FLV files and Flash, see “About using FLV video” on page 603 .
The following example uses the Drawing API to create a progress bar. The example also uses
the
bytesLoaded
and
bytesTotal
properties to show the loading progress of video1.flv into
the video object instance called
my_video
. The
loaded_txt
text field is dynamically created
to show information about the loading progress.
To create a progress bar that shows loading progress:
1.
Create a new FLA file called flvProgress.fla .
2.
In the Library panel (Window > Library), select New Video from the Library
pop-up menu.
3. In the Video Properties dialog box, name the video symbol and select Video (ActionScript
controlled).
4. Click OK to create a video object.
5. Drag the video object from the Library panel to the Stage to create a video object instance.
6. With the video object selected on the Stage, type my_video in the Instance Name text box
in the Property inspector (Window > Properties > Properties).
7.
With the video instance selected, type 320 into the width text box and 213 into the height
text box.