Firefox for Android

on YouTube ↗25m

" summary

Firefox for Android abandons XUL UI for a native Java UI to fix slow startup, poor responsiveness and high memory use, keeps Gecko as the rendering engine, and moves browser logic back into JS. Java and JS communicate over a custom JSON message loop (JNI/XPCOM underneath). Add-ons run entirely in JS with APIs that manipulate the native UI, letting developers build and install restartless extensions without changing the engine.

AI-written summary · about

" chapters (14)

1. 0:00Firefox for Android intro
2. 1:20Why Firefox exists
3. 2:26Early challenges
4. 3:30Rewriting in Java
5. 4:36Native UI in Java
6. 6:43JS-Java message passing
7. 7:49Handling back button
8. 8:33Updating tab titles
9. 9:56Add-ons in JavaScript
10. 13:10Add-on API design
11. 14:55Get involved
12. 17:47Q&A on WebKit & startup
13. 20:16Debugging & hacking
14. 23:52Closing & future

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