重复请求apple-touch-icon-precomposed.png，并在头部设置了apple-touch-icon

Question

I've set paths for my apple-touch-icon files in the head of my page:

<link rel="apple-touch-icon" href="/images/apple-touch-icon.png">
<link rel="apple-touch-icon" sizes="72x72" href="/images/apple-touch-icon-72x72.png">
<link rel="apple-touch-icon" sizes="114x114" href="/images/apple-touch-icon-114x114.png">

but every so often I get a batch (more than five at a time) of requests for /apple-touch-icon-precomposed.png from Android users. Is this normal behavior and how do I get it to stop? I know I can add the file but I don't want to have to create a new version of the files and hope I get the same effects.

Update We've recently been seeing requests for apple-touch-icon-144x144.png and I haven't found anything online that explains why we would need that (we added it anyways).

Answer 1

See http://www.ravelrumba.com/blog/android-apple-touch-icon/

'... Android 2.1 ... will only use the icon if you link to it with a rel value of “apple-touch-icon-precomposed”.'

So it seems to be 'normal' (doesn't work with the non-precomposed version).

Also see http://developer.apple.com/library/ios/#documentation/UserExperience/Conceptual/MobileHIG/IconsImages/IconsImages.html#//apple_ref/doc/uid/TP40006556-CH14

Size for high-resolution iPad: 144 x 144