如何更改chrome打包的app id或者为什么我们需要manifest.json中的关键字段？ [英] How to change chrome packaged app id Or Why do we need key field in the manifest.json?

问题描述

我正在使用一次性钱包付款为Chrome商店开发打包应用程序。对于我的应用程序，我需要在运行时检查用户是否购买了该应用程序，或者不要决定它是演示功能还是完整功能。

根据chrome 在线演示，然后选择您需要的crx文件，刚刚创建（再次：只需打开控制台查看密钥和扩展名）。

当您准备好将您的应用/扩展程序提交到Chrome网上应用店，请按照以下步骤操作：

1. 创建一个包含您的扩展名的zip文件（重要： manifest.json 必须位于根目录，即directory / manifest.json不好，manifest.json很好）。
   
   
   
   
   • 将.pem文件添加为 key.pem ！ >
     （这是保留扩展程序ID所必需的）
   
   


2. 将扩展程序上传到Chrome网上应用店（如果没有manifest.json中的key字段，CWS将拒绝包含key字段的任何上传）。
   

对于后续更新，不应将key.pem添加到zip文件中，因为Chrome网上应用店不再需要它。

I'm developing packaged app for chrome store using one-time chrome wallet payments. For my app I need to check during the runtime if user bought the app or not to decide should it be demo functionality or full functionality.

According to the chrome identity API documentation :

to keep application ID constant, You need to copy the key in the installed manifest.json to your source manifest.

I have 2 questions about this procedure:

1) under what condition the id of my application may change? I've tried to re-install the app and made updates but the apps id remains the same.. If there is no way to change apps id than why do I need this procedure for?

2) how can I upload my zip archive with manifest.json (which contains "key" field) to chrome dashboard? The problem is that uploader throw an error at me:

An error occurred: Failed to process your item.

key field is not allowed in manifest.

解决方案

Once uploaded to the Chrome Web Store, your extension ID is fixed and cannot be changed any more.

The ID is derived from the .pem file that was created the first time you (or the Chrome Web Store) packed the extension in a .crx file. When you load an extension in "unpacked mode", an ID is automatically generated in an unpredictable way. The only way to control the extension ID during development is by setting the "key" field in the manifest file, as the documentation suggests.

When you have already published the extension in the Chrome Web Store, then you can easily get the value of this "key" field using the Chrome Extension Source Viewer. After installing the extension, go to your Chrome web store details page and click on the CRX button to view the source. When the Chrome Extension Source viewer has loaded the extension, it will display the key in the console, which can directly be copy-pasted to your manifest.json:

If you have not published your extension, or you do not want to use the Chrome Web Store, then you need to generate a private key first.

1. Go to chrome://extensions/ and enable Developer mode.
2. Click on "Pack extension...", select your app/extension's directory and confirm.
   Now you've got a .crx file and a .pem file. Back up the private key (.pem file)!
3. The extension mentioned can be used to get the same information. Alternatively, visit the online demo at https://robwu.nl/crxviewer/ and select the crx file you've just created (again: just open the console to see the "key" and extension ID).

When you're ready to submit your app/extension to the Chrome Web Store, follow the following steps:

1. Create a zip file containing your extension (important: manifest.json must be at the root, i.e. "directory/manifest.json" is bad, "manifest.json" is good).
   • Add the .pem file as key.pem!
     (this is necessary to preserve the extension ID)
2. Upload the extension to the Chrome Web Store (without the "key" field in manifest.json, the CWS will reject any upload that contains a "key" field).

For subsequent updates, "key.pem" should not be added to the zip file, because the Chrome Web Store does not need it any more.

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