Hi everyone,

I have a question about android architecture layer. On top of "linux-kernel" layer there are "libraries" layer and located next to it is "Android runtime" layer.

My question is why the "android runtime" layer located next to "libraries" layer ? Why not on top of the "libraries" layer or below it ?

Thanks for the answer.

Sasuke

Probably because you can also access these other libraries.

The 'Android Runtime' is probably not located on top of the libraries, because it does not totally build upon them. The DalvikVM is a VirtualMachine that is running on Linux and not essentially on the libraries.

I think there is no 100% technically correct answer to this diagram

Regards,
plusminus

Thank you for the answer plusminus.

I appreciate that.

Actually it's both locate beside the library layer and on top of the library layer. Probably because developers also have access to SQLite, Opengl, ... I believe these libraries aren't really a part of the Dalivik core libraries, although we access them through Java, but these calls are probably only bypass calls, directly to the underlying libraries.