How to check if address is contained in a continent or close to another address in android google maps api v2?

How to check if address is contained in a continent or close to another
address in android google maps api v2?

In my app, I have a list of locations, and I want to create filter
settings. I am looking for a way so that a user can pick maybe a continent
or country or address and then filter out the locations from the list if
the location is within the continent or country or close to the address.
Is there a google maps v2 api for android that can do something like:
public Boolean AddressIsContained(String address, String place);
which returns true if address is within place (place could be like a
country or continent). And also like
public Boolean AddressCloseTo(String address1, String address2, int
distance);
which returns true if address1is within distance amount of kilometers to
address2. And this would just be a straight line between the addresses,
nothing like a bike, walk, car or plane route.
Also for the list of locations, I am also able to access its lat/long if
that makes it easier.
Thanks