On December 20 I wrote:
-------------------------
I have a UIWebview in my app that I want to use to load an HTML
document containing anchors so that I can jump around the document by
tapping on the links to the various anchors. (e.g. a link at the
bottom of the page to jump to the top of the page)
I have the links and anchors working fine, except that for example
when I am at the bottom of the page and tap on the link to jump to
the top of the page, then scroll down from the top to the bottom,
then tap the link to go to the top again, nothing happens. It's as if
the webview thinks it is still at the top of the page.
Is there any way to get the webview to realize that the top of the
page is no longer visible after scrolling? I tested this on my Mac
with Safari, and scrolling does not affect the action of the link and
anchor there.
Thanks for any help. I have spent several hours searching with no luck.
Don
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I thought I should add a bit more information following some further
investigation. I hope it might help someone else out in the future.
My idea was to include a simple help document with my app. By using
HTML I could have a table of contents at the top, and a user could
select a topic by tapping on it to go to an anchor further down the
page. At the end of the topic would be another link to return to the
top of the page. My investigations here show that if the user scrolls
to the top instead of using the link, then the original link to the
topic would no longer work.
It appears that once an anchor is jumped to you cannot jump to that
anchor again until you jump to a different anchor. This resets
something. Any href link to the anchor highlights normally, but
nothing happens. No web view delegate methods are called, as they are
the first time the link is clicked on. Here is my test file:
<!DOCTYPE html>
<html lang="en">
<a name="top"></a>
<a href="#bottom" rel="self">Go to bottom.</a><br>
<a href="#bottom" rel="self">Go to bottom.</a><br>
Line 1<br>
Line 2<br>
... enough lines to extend below the screen.
Line 3<br>
<a name="bottom"></a>This is it.<br>
<a href="#top" rel="self">Go to top.</a></html>
If I click on the first "Go to bottom." link I jump to the bottom as
expected. If I scroll back up to the top and click on either "Go to
bottom." link nothing happens. If I then scroll back to the bottom
and click on "Go to top" I jump to the top, and either of the "Go to
bottom" links works to get me to the bottom again.
Unless anyone can tell me I have missed something, I think I will
file a bug report on this.
Thanks,
Don
--
Donald S. Hall, Ph.D.
Apps & More Software Design, Inc.
d...@appsandmore.com
http://www.appsandmore.com
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