Some problems in android that occurs frequently

Here, I listed some frequently occurs problem in android .

Usage

Custom Curcular Drawable - Shows how to use custom circular drawable in android.
Relative Time - Mainly focus on nice presentation of date/time (such as Month ago, Year ago , momemt ago etc..) in android application,
Git Command hint -Some frequently used git commands
Native File implementations -Native files (C,C++) implementaions with CMake in andoroid