Question

我使用以下脚本添加到我的移动网站的启动屏幕中，一旦将其添加到主屏幕。

<script>
(function(){

    var a;
    if(navigator.platform === "iPad") {
        a = window.orientation!==90||window.orientation === -90 ? 
             "/assets/img/startup/startup-tablet-landscape.png" :
             "/assets/img/startup/startup-tablet-portrait.png";
    }
    else {
        a = window.devicePixelRatio === 2 ? 
             "/assets/img/startup/startup-retina.png" :
             "/assets/img/startup/startup.png";
    }
    document.write('<link rel="apple-touch-startup-image" href="' + a + '"/>');

})();
</script>

这适用于iPhone而不适用于iPad，我正在新iPad上测试，这有关系吗？我得到的只是一个白色屏幕，然后加载。

Answer 1

你不需要javascript，你可以使用这个snipplet，它应该自动选择正确的图像：

<!-- For iPhone 4 with high-resolution Retina display: -->
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="apple-touch-icon-114x114-precomposed.png">

<!-- For first-generation iPad: -->
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="apple-touch-icon-72x72-precomposed.png">

<!-- For non-Retina iPhone, iPod Touch, and Android 2.1+ devices: -->
<link rel="apple-touch-icon-precomposed" href="apple-touch-icon-precomposed.png">


<!-- 320x460 for iPhone 3GS -->
<link rel="apple-touch-startup-image" media="(max-device-width: 480px) and not (-webkit-min-device-pixel-ratio: 2)" href="startup-iphone.png">

<!-- 640x920 for retina display -->
<link rel="apple-touch-startup-image" media="(max-device-width: 480px) and (-webkit-min-device-pixel-ratio: 2)" href="startup-iphone4.png">

<!-- iPad Portrait 768x1004 -->
<link rel="apple-touch-startup-image" media="(min-device-width: 768px) and (orientation: portrait)" href="startup-iPad-portrait.png">

<!-- iPad Landscape 1024x748 -->
<link rel="apple-touch-startup-image" media="(min-device-width: 768px) and (orientation: landscape)" href="startup-iPad-landscape.png">

来源：https://gist.github.com/1375646

在iPad上启动移动网站的屏幕

1 个答案: