基于安卓的简易计算器设计，实现简单的加减乘除及括号操作。(Based on Android's simple calculator design, realize simple addition, subtraction, multiplication and division and parenthesis operation.)

简易的计算器，页面设计，适合初学者使用。。。。(Simple calculator, page design, suitable for beginners to use...)

基于Android studio设计完成简单的加减乘除及清除功能(Complete simple addition, subtraction, multiplication, division and clearing functions)