javascript - ASP.NET Core 2.1 - PWA(取消Banner提示)

Question

尝试使用 ASP.NET Core 2.1 和 Nuget 制作渐进式 Web 应用程序:WebEssentials.AspNetCore.PWA。

我的 serviceworker 和 list 显示在 Chrome 开发工具中，但是当我点击“添加到主屏幕”时，除了在计算机上显示错误之外没有任何反应，而在手机上，顶部的加载横幅卡在加载中。

错误:

Site cannot be installed: the page has requested the banner prompt be cancelled

我似乎找不到关于这个错误的任何信息，所以希望你们能帮助我。提前致谢。

服务 worker :

self.addEventListener('install', async event => {
    const cache = await caches.open(CACHE_NAME);
    cache.addAll(urlsToCache).catch(err => console.log('An error occured: ', err));
});

self.addEventListener('fetch', event => {
    const request = event.request;
    const url = new URL(request.URL);

    if (url.orgin === location.orgin) {
        event.respondWith(cacheFirst(request));
    } else {
        event.responseWith(networkFirst(request));
    }
    
});

async function cacheFirst(request) {
    const cachedResponse = await caches.match(request);
    return cachedResponse || fetch(request);
}

async function networkFirst(request) {
    const cache = await caches.open('wportal-dynamic-v1');

    try {
        const res = await fetch(request);
        cache.put(request, res.clone());
        return res;
    } catch (exception) {
        console.log('An error occured in networkFirst: ', exception);
        return await cache.match(request);
    }
}

Answer 1

找到解决方案..

var deferredPrompt = null;                

window.addEventListener('beforeinstallprompt', (e) => {
    e.preventDefault(); // Prevent Chrome 67 and earlier from automatically showing the prompt
    deferredPrompt = e;
});

<button onclick="deferredPrompt.prompt();">Click me to install pwa</button>