So, I'm utterly and completely new to making Firefox add-ons. I have been trying to make a really, really simple one which will run some JavaScript on the page when I click it. That's literally all I want it to do -_-
However, it will install when I drag it into FF/Nightly, but then not show up in the customise menu. It will say it's installed, but that's it. (I also can't open its preferences, but, I'm really not complaining - I just want a really basic add-on).
If you need the code/entire XPI itself, I'm happy to supply. Thank you :)
I am using the following directories and files:
.
├── chrome
│ ├── chrome.manifest
│ ├── content
│ │ ├── boustrophedonise.js
│ │ ├── browser.xul
│ │ └── prefrences.xul
│ ├── locale
│ │ └── en-UK
│ │ └── translations.dtd
│ └── skin
│ ├── icon.png
│ └── skin.css
├── defaults
│ └── preferences
│ └── pref.js
└── install.rdf
答案 0 :(得分：0)
虽然可能存在其他问题，但您的chrome.manifest文件位于错误的目录中。它需要位于根目录（与 install.rdf 文件相同的目录）中。 MDN上Setting Up the Development Environment教程的“Create a Chrome Manifest”和“Building an extension”部分都介绍了这一点。第一部分解释了您应该从一个看起来像这样的目录结构开始：
.
├── chrome
│ └── content
│ └── sample.xul (Much of your content in this directory)
├── chrome.manifest
└── install.rdf
chrome.manifest 文件是Firefox附加组件所需的文件之一。它定义了chome://myExtension/content/*指向的URL。在您的情况下，如果 chrome.manifest 文件位于根目录中，则chrome://boustrophedonise/content/options.xul的 install.rdf 中的网址无效，可能会抱怨在安装扩展程序时在Firefox Browser Console中（或者在显示加载项管理器时，或者单击附加选项的链接时）。 Firefox可能还抱怨缺少 chrome.manifest 文件。显然，由于Firefox无法找到 chrome.manifest 文件，因此它不会将overlay应用于chrome://browser/content/browser.xul，也不应用skin，两者都已定义在该文件中，这些内容将您的加载项挂钩到Firefox中。
因此，在您的情况下，您需要移动 chrome.manifest 文件，使其位于：
.
├── chrome
│ ├── content
│ │ ├── boustrophedonise.js
│ │ ├── browser.xul
│ │ └── prefrences.xul
│ ├── locale
│ │ └── en-UK
│ │ └── translations.dtd
│ └── skin
│ ├── icon.png
│ └── skin.css
├── chrome.manifest
├── defaults
│ └── preferences
│ └── pref.js
└── install.rdf