[안드로이드]context취득 관련

컨텍스트 취득관련정보
https://medium.com/@marudxlab/getbasecontext-%EC%99%80-getapplicationcontext-14ff3e0755b3#.u5drq9mct

http://codeticker.tistory.com/m/post/entry/Android-%ED%98%84%EC%9E%AC-%EC%8B%A4%ED%96%89-%EC%A4%91%EC%9D%B8-%EC%95%A1%ED%8B%B0%EB%B9%84%ED%8B%B0-%EC%96%BB%EC%96%B4%EC%98%A4%EA%B8%B0