<linkhref="apple-touch-startup-image-640x960.png"media="(device-width: 320px) and (-webkit-device-pixel-ratio: 2)"rel="apple-touch-startup-image">
<linkhref="apple-touch-startup-image-768x1004.png"media="(device-width: 768px) and (orientation: portrait)"rel="apple-touch-startup-image">
<linkhref="apple-touch-startup-image-748x1024.png"media="(device-width: 768px) and (orientation: landscape)"rel="apple-touch-startup-image">
<linkhref="apple-touch-startup-image-1536x2008.png"media="(device-width: 1536px) and (orientation: portrait) and (-webkit-device-pixel-ratio: 2)"rel="apple-touch-startup-image">
<linkhref="apple-touch-startup-image-2048x1496.png"media="(device-width: 1536px) and (orientation: landscape) and (-webkit-device-pixel-ratio: 2)"rel="apple-touch-startup-image">
图标尺寸: 可通过指定size属性来为不同的设备提供不同的图标(但通常来说,我们只需提供一个114 x 114 pixels大小的图标即可 )
官方说明如下: Create different sizes of your app icon for different devices. If you’re creating a universal app, you need to supply app icons in all four sizes. For iPhone and iPod touch both of these sizes are required: 57 x 57 pixels 114 x 114 pixels (high resolution) For iPad, both of these sizes are required: 72 x 72 pixels 144 x 144 (high resolution)