检查是否安装了chrome扩展程序 [英] Check is chrome extensions installed

问题描述

我在Chrome网上应用店中发布了Chrome扩展程序.

I have Chrome extension published on Chrome web store.

现在，我想从我网站上的页面实施内联安装.

Now I want to implement Inline installation from page on my website.

我一直在关注 Chrome教程.

所以我将我的网站添加为我的Chrome扩展程序的经过验证的网站，并且内联安装工作正常.

So I added my website as verified site for my Chrome extension and inline installation is working fine.

我要解决的问题是如何检查用户是否已经安装了我的扩展程序.

The issue which I have is how to check does user already have my extension installed.

我要首先检查用户是否安装了扩展程序，如果没有安装，请不要显示安装按钮，否则请显示它.

I want to first check does user have extension installed and if so don't show installation button and otherwise to show it.

在用于内联安装的chrome教程中，有说明如何检查扩展名通过检查chrome.app.isInstalled

In chrome tutorial for inline installation there is explanation how to check is extension already installed by checking chrome.app.isInstalled

但是，即使安装了扩展程序，它始终返回 false . 我找不到使用此属性的任何详细说明.我想知道它如何得出我正在检查的扩展名?它是从head中的chrome <link>得出结论的吗?

But this is always returning false, even if extension is installed. I cannot find any detail explanation of using this property. I am wondering how it even conclude which extension I am checking? Does it conclude from chrome <link> in head:

<link rel="chrome-webstore-item" href="https://chrome.google.com/webstore/detail/itemID">

任何帮助，如何正确检查用户是否安装了我的扩展程序?

Any help, how properly to check does user have my extension installed or not?

推荐答案

我在YouTube上看到了一个安全视频，我现在没有链接了，但是我认为这是DefCon的演讲，或者类似的东西……它显示如果 在manifest.json中.这可能不是一件好事...

I saw a security video on YouTube, I don't have a link anymore, but I think it was a DefCon talk, or something... it shows how Chrome allows access to extension resources from a browser URL if the resource is included in the extension list of web_accessible_resources in the manifest.json. This probably isn't a good thing...

因此，您可以:

• 创建一个图像，上面写着该扩展名已安装且处于活动状态.
• 将此图像添加到您的扩展程序中，并将其包括在web_accessible_resources列表下的manifest.json中.

• 然后在您的网页上链接到它.只有在安装扩展程序并启用后，该图像才可见.

• Create an image that says something like the extension is installed and active.
• Add this image to your extension, and include it in the manifest.json under the web_accessible_resources list.

• Then link to it on your webpage. The image will only be visible if the extension is installed and enabled.

<img src="chrome-extension://{extension-id}/extension-enabled.png">

使用javascript检查并查看图像是否已加载.如果没有，请用显示扩展名已禁用或未安装的URL替换.

Use javascript to check and see if the image loaded. If it didn't, replace it with a url showing that the extension is disabled or not-installed.

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