https://blog.faceutil.com/2017/05/19/%ec%95%88%eb%93%9c%eb%a1%9c%ec%9d%b4%eb%93%9candroid-avd-%ed%95%9c%ea%b8%80%ec%9e%90%ed%8c%90-%ec%84%a4%ec%b9%98-%e3%81%a8/