Hi,

I've few questions on Android Framework. Can someone please answer
them

i) What does an Android Framework do? What is it's job?
ii) What are these managers - Activity Manager, Location Manager etc?
Are they APIs or libraries?
iii) I heard that the definition of a framework is - a set of
libraries that say “Don’t call us, we’ll call you.”  So can I say that
Activity Manager, Location Manager etc are such libraries? Or is it
that they are not libraries but APIs (used to access underlying c/c++
libraries) and the actual libraries that do "Don't call us, we'll call
you." are hidden from us?

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