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BlackBerry browser caching, even with no cache meta tags

So, firstly, this is a website on which the user sees a list of unfinished tasks. It should work so that the user clicks the "Full" button, and then the item no longer appears, it seems not!

When they click "complete" on an element, my onclick function executes the SQL update statement and then returns response.redirect to this page, the sql statement is executed correctly, the page redirects, but the list element is still there!

If the user leaves the page and returns to it, the HAS list item has disappeared, it makes me think that the page is cached, however I stopped this with the following:

<meta http-equiv="Cache-Control" content="no-cache, must-revalidate, post-check=0, pre-check=0" />
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="-1" />

which is great for my BlackBerry Bold running OS 5.0, but not working for clients with BlackBerry Bold running OS 4.x

Any ideas on what this might be are most appreciated.

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2 answers

Try something like this:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <META HTTP-EQUIV="Expires" CONTENT="0">
    <META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">
    <title>Expires Example Page</title>
  </head>
  <body>
    Hello World!
  </body>
</html>

This is from the Blackberry Support Forum: http://supportforums.blackberry.com/t5/Web-Development/Browser-cache-and-quot-Back-quot-button/mp/155986

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How about this http://developer.blackberry.com/bbos/html5/documentation/rim_cache_element_1264486_11.html

try changing disableAllCache to false in config.xml

<rim:cache disableAllCache=["true" | "false"]
           aggressiveCacheAge="time"
           maxCacheSizeTotal="size"
           maxCacheSizeItem ="size" />
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