It is rather stable (but use latest git for some fixes). And there are some general restrictions. At the very least you will have to handle ALLEGRO_EVENT_DISPLAY_HALT_DRAWING and make sure you support touch input. You'll also want to take extra care to limit memory and CPU consumption (especially while your app is backgrounded). On Android a game can never quit, it just gets backgrounded - but will sit in the background for months and if you're not careful still drain battery. Also, the way Allegro is set up on Android you will need to use a tiny bit of Java for initialization.

Yes there is a way to do that , using one on these i think :
ALLEGRO_EVENT_DISPLAY_SWITCH_OUT
ALLEGRO_EVENT_DISPLAY_LOST
probably the first one , at least on SDL2 it is SDL_WINDOWEVENT_MAXIMIZED ..

but now the problem is that building allegro 5 for android on windows is hell , i think i can do it , but i won't do it for myself , i want to write a build script for this purpose for the comuity , is anyone interrested in this ? cuz probably i will need help

Now i have downloaded android studio , and i have SDK / JDK ... all setup , so how to use allegro from this point , i found that link useful from github ( https://github.com/liballeg/android ) , but i think that it assumes that you have a precompiled libraries of allegro for android , where can i found those , if not , what to do then ? and thanks

Wow, that's cool, thanks!