[Q] Android Architecture Layer

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[Q] Android Architecture Layer

Postby sasuke » Tue Sep 16, 2008 3:23 am

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.

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Postby plusminus » Tue Sep 16, 2008 2:14 pm

Probably because you can also access these other libraries.
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Postby plusminus » Thu Oct 02, 2008 4:29 am

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 ;)

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Postby sasuke » Thu Oct 02, 2008 9:43 am

Thank you for the answer plusminus.

I appreciate that.
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Postby MrSnowflake » Thu Oct 02, 2008 11:46 am

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.
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