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Getting started with Flash, can be a bit intimidating even
for somebody who has some familiarity with programming. This is
especially true when having to load images dynamically from a
directory, load text dynamically from a text file, and make the
frames loop appropriately.
Some common issues that we encountered, about which
there are some posts on various Flash forums:
- While debugging, we get the error "Error opening
This message would be usually followed with a URL of the
file we were trying to load dynamically. We received this
when attempting to dynamically read a text file into our
Solution: if you are trying to load variables from a
text file and using a GET method, this will produce this
To correct it, use:
Text files do not receive parameters, like ASP or ASPX files
do. The loadVariablesNum is
used for those files (i.e. dynamic web files).
- Command setInterval(SlideShow,3000) was not being
properly cleared up with clearInterval.
Some intervals would not be cleared, therefore our animation
was getting faster and faster until Internet Explorer would
Solution: We corrected this by correcting all other
errors that were occurring in the Flash project. It turned
out that any time an error would occur, some intervals would
be interrupted and left un-cleared, therefore still running
in the background. Too many running intervals would run the
animation faster and eventually crash the web browser.
- Our first frame (frame 1) code would be re-loaded
periodically (the movie would loop back to frame 1 and
re-run it's initialization code).
In our first frame we would load our dynamic text and XML
file that contained the list of images we used dynamically
in our animation. This would be re-loaded periodically.
Solution: It turns out that we did not have a command
at the end frame to skip going back to frame 1. So, we added
to the last frame (in our case this was frame 689!) a
Of course, you can make this be frame 2, as long as you loop
in such a way that you skip frame 1 from being re-loaded
- More issues? You can certainly add some trace
("something"); commands and select Control > Debug Movie
menu option (Ctrl+Shift+Enter). You can also search Live! or
Google for more ideas.
More resources on Adobe Flash development and
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