Your own build of the Android OS, for the convenience of debugging and reverse engineering, logging, monitoring, and generally to your taste?

Question

Android

I want to make some changes to the OS, optimizing it for my needs.
For example: so that all Java Exceptions from all applications are tracked and logged.
Or for HTTP/HTTPS traffic to be sniffed without the need to password protect the phone/pin code (which is inconvenient - all this paranoia and security chirped like a bitch, why should I use OS for stupid blondes if I'm not SSZB?).
Or just change a couple of activities on the little things, remove or add, well, I don’t like something there, it interferes - and that's it.
Or just take and design your gadget and want your own collection with goodies and bugs for it.
In general, the changes will be very different, and possibly will affect the OS libraries, and in Dalvik, and in the OS kernel (written in C / C ++).
Any constructive advice on how to do this?
The easiest way, probably, is to pick Android x86. I downloaded it (which I am doing now), picked it up (the easiest way, probably, is to pick Java libraries) and put it in VirtualBox. Or maybe in Genymotion.
But what if I need ARM for it (and it is more likely to be needed, because it is more popular)? At the same time, I will only run its emulator for half an hour ... So, you need to install it on a real device, preferably a cheap one for 2500r ... Do you
have anything to say? Maybe even some experience? Please share.
Separately, I would like to listen to the specialists from Yandex, what they will say, although I already guess, ahaha.

Answer 1

source.android.com/index.html is all you need. Take and study.