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mulitple apple touch startup image resolutions for ios web app esp for ipad

mulitple apple touch startup image resolutions for ios web app esp for ipad  using -'ipad,mobile-safari,ios,web-applications'

I've written an HTML5-based iOS web application and all seems to be working well, but I'm trying to polish it up with multiple startup screens. The iPhone/iPod touch works well w/a PNG of 320x460, as follows:

<link rel="apple-touch-startup-image" href="img/startup_screen-320x460.png" />

I found plenty of documentation that says the startup images for the iPad should, like the iPhone/iPod touch, have the 20px shaved from the height to accommodate for the status bar giving resolutions of 768x1004 (portrait) or 1024x748 (landscape). However, in my testing (currently w/an iPad running iOS 3.2.2), only the 768x1004 (portrait) resolution works (but is incorrect—20px too narrow—when in landscape mode).

I've tried the following (a wild guess based on the functionality of the apple-touch-icon links), to no avail:

<link rel="apple-touch-startup-image" href="img/startup_screen-320x460.png" />
<link rel="apple-touch-startup-image" sizes="1024x748" href="img/startup_screen-1024x748.png" />
<link rel="apple-touch-startup-image" sizes="768x1004" href="img/startup_screen-768x1004.png" />

Only the 768x1004 resolution image works if it's the last link element listed. If the 1024x748 resolution image is last, a gray background is rendered in its stead (but never the 768x1004). So, obviously the apple-touch-startup-image link doesn't support the sizes attribute.

Is this supported in newer versions of the iOS? Is there any way to support multiple startup images? Should I create a 1024x768 startup image? If so, will is be scaled down for the iPhone/iPod touch? Or, should I just give up and not have a startup image for the iPad?

asked Oct 6, 2015 by devkumargupta
0 votes

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