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    Extensions for Firefox for Android

    Firefox for Android supports add-ons using the same extension system used by all other Gecko-based applications. You can use the Add-on SDK or build manually bootstrapped restartless add-ons. You can even develop traditional restart-required add-ons, although the other two approaches are preferable.

    Add-ons that work with desktop Firefox do not automatically work in Firefox for Android:

    • There is no visible XUL in the UI, so you can't use an overlay to create the UI.
    • Internal code and objects, like gBrowser, do not exist. Look at the Firefox on Android browser.js file to learn about the internals. Much of the same fundamental functionality exists.
    • Services like nsIPromptService and nsIAlertsService are implemented to use native Android UI.
    • There is a simple JavaScript object, called NativeWindow, that allows you to manipulate parts of the native Android UI.

    The following articles provide help with developing extensions for Firefox on Android. In addition, please refer to the general extension documentation that applies to all Mozilla applications.


    Developing, packaging and installing a simple add-on for Firefox for Android.
    Initialization and Cleanup
    How to initialize your add-on when it is started and clean up when it is shut down.
    Add-on SDK
    How to develop Firefox for Android add-ons using the Add-on SDK.

    Sample code

    Creating a UI
    A quick guide to using the NativeWindow API to create user interface components.
    Code Snippets
    Code samples for common tasks

    API reference

    Create native Android UI widgets.
    Access browser tabs and the web content they host.
    Show native Android dialogs
    Query and launch native apps installed on the system
    Use extended properties for Android system notifications.


    Document Tags and Contributors

    Contributors to this page: wbamberg
    Last updated by: wbamberg,