我正在制作一个PWA，并试图显示启动屏幕。我在index.html头上使用了以下代码：
<link rel="apple-touch-startup-image" media="screen and (device-width: 1024px) and (device-height: 1366px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/12.9__iPad_Pro_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 834px) and (device-height: 1194px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/11__iPad_Pro__10.5__iPad_Pro_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 820px) and (device-height: 1180px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/10.9__iPad_Air_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 834px) and (device-height: 1112px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/10.5__iPad_Air_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 810px) and (device-height: 1080px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/10.2__iPad_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 768px) and (device-height: 1024px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/9.7__iPad_Pro__7.9__iPad_mini__9.7__iPad_Air__9.7__iPad_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 430px) and (device-height: 932px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)" href="images/iPhone_14_Pro_Max_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 393px) and (device-height: 852px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)" href="images/iPhone_14_Pro_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 428px) and (device-height: 926px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)" href="images/iPhone_14_Plus__iPhone_13_Pro_Max__iPhone_12_Pro_Max_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 390px) and (device-height: 844px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)" href="images/iPhone_14__iPhone_13_Pro__iPhone_13__iPhone_12_Pro__iPhone_12_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)" href="images/iPhone_13_mini__iPhone_12_mini__iPhone_11_Pro__iPhone_XS__iPhone_X_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)" href="images/iPhone_11_Pro_Max__iPhone_XS_Max_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/iPhone_11__iPhone_XR_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 414px) and (device-height: 736px) and (-webkit-device-pixel-ratio: 3) and (orientation: landscape)" href="images/iPhone_8_Plus__iPhone_7_Plus__iPhone_6s_Plus__iPhone_6_Plus_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 375px) and (device-height: 667px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/iPhone_8__iPhone_7__iPhone_6s__iPhone_6__4.7__iPhone_SE_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2) and (orientation: landscape)" href="images/4__iPhone_SE__iPod_touch_5th_generation_and_later_landscape.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 1024px) and (device-height: 1366px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/12.9__iPad_Pro_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 834px) and (device-height: 1194px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/11__iPad_Pro__10.5__iPad_Pro_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 820px) and (device-height: 1180px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/10.9__iPad_Air_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 834px) and (device-height: 1112px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/10.5__iPad_Air_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 810px) and (device-height: 1080px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/10.2__iPad_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 768px) and (device-height: 1024px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/9.7__iPad_Pro__7.9__iPad_mini__9.7__iPad_Air__9.7__iPad_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 430px) and (device-height: 932px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="images/iPhone_14_Pro_Max_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 393px) and (device-height: 852px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="images/iPhone_14_Pro_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 428px) and (device-height: 926px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="images/iPhone_14_Plus__iPhone_13_Pro_Max__iPhone_12_Pro_Max_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 390px) and (device-height: 844px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="images/iPhone_14__iPhone_13_Pro__iPhone_13__iPhone_12_Pro__iPhone_12_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="images/iPhone_13_mini__iPhone_12_mini__iPhone_11_Pro__iPhone_XS__iPhone_X_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="images/iPhone_11_Pro_Max__iPhone_XS_Max_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/iPhone_11__iPhone_XR_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 414px) and (device-height: 736px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="images/iPhone_8_Plus__iPhone_7_Plus__iPhone_6s_Plus__iPhone_6_Plus_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 375px) and (device-height: 667px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/iPhone_8__iPhone_7__iPhone_6s__iPhone_6__4.7__iPhone_SE_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="images/4__iPhone_SE__iPod_touch_5th_generation_and_later_portrait.png">
但不起作用。请告诉我这个代码出了什么问题？顺便说一下，我看到了这个问题多个"；apple touch启动图像"；但我解决不了这个
经过多次尝试，我找到了解决方案：服务工作者需要显示启动屏幕，我注册了我的serviceWorker.js，如下所示：
serviceWorker.register()
它预计会起作用，但对我来说不起作用，我删除了这一行，改为编写以下代码：
window.addEventListener("load", () => {
// Is service worker available?
if ("serviceWorker" in navigator) {
navigator.serviceWorker
.register("/serviceWorker.js")
.then(() => {
console.log("Service worker registered!");
})
.catch(error => {
console.warn("Error registering service worker:");
console.warn(error);
});
}
});