我的网页应用有一个manifest的最小集合：name、icons、start_url、display。

桌面Chrome的工作情况
桌面Chrome（Chromium在 Linux 上）在地址栏显示了一个小小的安装图标。
点击该图标达到了我的预期，应用被安装：网页作为新窗口弹出，URL收起（display: standalone），图标与manifest中指定的相同，我在启动器菜单的“Other”中获得了一个启动器。

我期望在Android上能工作
来自 MDN：Making PWAs installable：
"On Android, Firefox, Chrome, Edge, Opera, and Samsung Internet Browser all support installing PWAs."

来自 Chrome for Developers：Blog：How Chrome helps users install the apps they value：
"Research at Google has shown that users also want to install any web experiences, even if they don't meet the install criteria or offer a customized install flow… For such cases, Chrome offers a manual way to install a page as a "manual" app… On mobile, tap More ⁝ > Add to home screen > Install app。"

我的问题
On Chrome on Android the Install app part never appears.
Add to home screen asks for a name, and the launcher created does not use the provided icon.

manifest.webmanifest:

{  
   "name": "Test App",
   "icons": [
      {
         "src": "/icons/logo512.png",
         "type": "image/png",
         "sizes": "512x512",
         "purpose": "any"
      },
      {
         "src": "/icons/logo192.png",
         "type": "image/png",
         "sizes": "192x192",
         "purpose": "any"
      },       
      {        
         "src": "/icons/logo144.png",
         "type": "image/png",
         "sizes": "144x144",
         "purpose": "any"
      },
      {
         "src": "/icons/logo.svg",
         "type": "image/svg+xml",
         "sizes": "any",
         "purpose": "any"
      }
   ], 
   "start_url": "/index.html",
   "display": "standalone"  
}

解决方案

Android Chrome仍然需要一个带有fetch处理程序的 service worker，才能提供“Install app”的选项。桌面端Chrome已经放弃了该要求。这是两者之间的根本差异，也解释了为什么桌面端可以安装而Android端不能。

你的manifest已经完整（这也是桌面端能工作的原因）。如果没有一个具备fetch处理程序的service worker，Android版 Chrome无法生成WebAPK，因此它回退到传统的Add to home screen路径：一个普通书签，请求你输入名称，并使用一个生成的图标来替代manifest图标

尝试添加并注册一个最小的service worker：

self.addEventListener('fetch', () => {}); 

// a no-op handler is enough to pass the installability check
// in your page
if ('serviceWorker' in navigator) navigator.serviceWorker.register('/sw.js');

通过https提供它，希望这能解决你的问题。