package?com.example.think.calculator;

import?android.support.v7.app.AppCompatActivity;
import?android.os.Bundle;
import?android.view.View;
import?android.widget.Button;
import?android.widget.TextView;

public?class?MainActivity?extends?AppCompatActivity?{
????private?TextView?txtResult1txtResult2;
????private?Button??btnAdd?btnDec?btnMul?btnDev?btnEqu;
????private?StringBuffer?digtalA=new?StringBuffer（）digtalB=new?StringBuffer（）;
????private?boolean?isChar=false;//判斷是否為運算符
????private?int?operator?=?0;//該參數表示進行哪種運算??0-->+??1-->-??2-->*??3-->/
????private?boolean?isDigtalA?=?true;

????@Override
????protected?void?onCreate（Bundle?savedInstanceState）?{
????????super.onCreate（savedInstanceState）;
????????this.setContentView（R.layout.calc）;
????????init（）;
????????b

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2020-03-06?21:53??Android\
?????文件?????????745??2020-03-05?08:36??Android\AndroidManifest.xml
?????文件???????18398??2020-03-06?21:46??Android\Android作業.png
?????文件????????5961??2020-03-06?21:45??Android\calc.xml
?????文件????????5608??2020-03-06?21:39??Android\MainActivity.java
?????文件??????????87??2020-03-06?20:14??Android\strings.xml