devbox
从前慢现在也慢
这个屌丝很懒，什么也没留下！
关注作者
热门标签
热门文章
当前位置:   article > 正文

Android Studio 简易计算机源码_android studio计算机代码

作者：从前慢现在也慢 | 2024-03-27 16:02:43

赞

踩

android studio计算机代码

效果图：

 

源码：

布局样式：

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     android:orientation="horizontal"
  4.     android:layout_width="match_parent"
  5.     android:layout_height="match_parent"
  6.     android:baselineAligned="false"
  7.     android:background="@color/grey"
  8.     android:columnCount="4"
  9.     android:rowCount="6">
  10.     <TextView
  11.         android:id="@+id/textview_01"
  12.         android:layout_columnSpan="4"
  13.         android:layout_gravity="fill"
  14.         android:gravity="right"
  15.         android:layout_marginLeft="5dp"
  16.         android:layout_marginRight="5dp"
  17.         android:background="@color/grey"
  18.         android:paddingRight="20dp"
  19.         android:paddingTop="40dp"
  20.         android:text="0"
  21.         android:layout_columnWeight="1"
  22.         android:textSize="88sp">
  23.     </TextView>
  24.     <Button
  25.         android:id="@+id/button_return"
  26.         android:layout_columnSpan="2"
  27.         android:gravity="center"
  28.         android:layout_columnWeight="1"
  29.         android:layout_rowWeight="1"
  30.         android:layout_margin="2dp"
  31.         android:background="@color/white"
  32.         android:textSize="30dp"
  33.         android:textStyle="bold"
  34.         android:text="回退" />
  35.     <Button
  36.         android:id="@+id/button_clear"
  37.         android:layout_columnSpan="2"
  38.         android:gravity="center"
  39.         android:layout_columnWeight="1"
  40.         android:layout_rowWeight="1"
  41.         android:layout_margin="2dp"
  42.         android:background="@color/white"
  43.         android:textSize="30dp"
  44.         android:textStyle="bold"
  45.         android:text="清空"/>
  46.     <Button
  47.         android:id="@+id/button_add"
  48.         android:layout_columnSpan="1"
  49.         android:gravity="center"
  50.         android:layout_columnWeight="1"
  51.         android:layout_rowWeight="1"
  52.         android:layout_margin="1dp"
  53.         android:background="@color/white"
  54.         android:textSize="50dp"
  55.         android:text="+"/>
  56.     <Button
  57.         android:id="@+id/button_01"
  58.         android:layout_columnSpan="1"
  59.         android:gravity="center"
  60.         android:layout_columnWeight="1"
  61.         android:layout_rowWeight="1"
  62.         android:layout_margin="1dp"
  63.         android:background="@color/white"
  64.         android:textSize="50dp"
  65.         android:text="1"/>
  66.     <Button
  67.         android:id="@+id/button_02"
  68.         android:layout_columnSpan="1"
  69.         android:gravity="center"
  70.         android:layout_columnWeight="1"
  71.         android:layout_rowWeight="1"
  72.         android:layout_margin="1dp"
  73.         android:background="@color/white"
  74.         android:textSize="50dp"
  75.         android:text="2"/>
  76.     <Button
  77.         android:id="@+id/button_03"
  78.         android:layout_columnSpan="1"
  79.         android:gravity="center"
  80.         android:layout_columnWeight="1"
  81.         android:layout_rowWeight="1"
  82.         android:layout_margin="1dp"
  83.         android:background="@color/white"
  84.         android:textSize="50dp"
  85.         android:text="3"/>
  86.     <Button
  87.         android:id="@+id/button_reduce"
  88.         android:layout_columnSpan="1"
  89.         android:gravity="center"
  90.         android:layout_columnWeight="1"
  91.         android:layout_rowWeight="1"
  92.         android:layout_margin="1dp"
  93.         android:background="@color/white"
  94.         android:textSize="50dp"
  95.         android:text="-"/>
  96.     <Button
  97.         android:id="@+id/button_04"
  98.         android:layout_columnSpan="1"
  99.         android:gravity="center"
  100.         android:layout_columnWeight="1"
  101.         android:layout_rowWeight="1"
  102.         android:layout_margin="1dp"
  103.         android:background="@color/white"
  104.         android:textSize="50dp"
  105.         android:text="4"/>
  106.     <Button
  107.         android:id="@+id/button_05"
  108.         android:layout_columnSpan="1"
  109.         android:gravity="center"
  110.         android:layout_columnWeight="1"
  111.         android:layout_rowWeight="1"
  112.         android:layout_margin="1dp"
  113.         android:background="@color/white"
  114.         android:textSize="50dp"
  115.         android:text="5"/>
  116.     <Button
  117.         android:id="@+id/button_06"
  118.         android:layout_columnSpan="1"
  119.         android:gravity="center"
  120.         android:layout_columnWeight="1"
  121.         android:layout_rowWeight="1"
  122.         android:layout_margin="1dp"
  123.         android:background="@color/white"
  124.         android:textSize="50dp"
  125.         android:text="6"/>
  126.     <Button
  127.         android:id="@+id/button_ride"
  128.         android:layout_columnSpan="1"
  129.         android:gravity="center"
  130.         android:layout_columnWeight="1"
  131.         android:layout_rowWeight="1"
  132.         android:layout_margin="1dp"
  133.         android:background="@color/white"
  134.         android:textSize="50dp"
  135.         android:text="*"/>
  136.     <Button
  137.         android:id="@+id/button_07"
  138.         android:layout_columnSpan="1"
  139.         android:gravity="center"
  140.         android:layout_columnWeight="1"
  141.         android:layout_rowWeight="1"
  142.         android:layout_margin="1dp"
  143.         android:background="@color/white"
  144.         android:textSize="50dp"
  145.         android:text="7"/>
  146.     <Button
  147.         android:id="@+id/button_08"
  148.         android:layout_columnSpan="1"
  149.         android:gravity="center"
  150.         android:layout_columnWeight="1"
  151.         android:layout_rowWeight="1"
  152.         android:layout_margin="1dp"
  153.         android:background="@color/white"
  154.         android:textSize="50dp"
  155.         android:text="8"/>
  156.     <Button
  157.         android:id="@+id/button_09"
  158.         android:layout_columnSpan="1"
  159.         android:gravity="center"
  160.         android:layout_columnWeight="1"
  161.         android:layout_rowWeight="1"
  162.         android:layout_margin="1dp"
  163.         android:background="@color/white"
  164.         android:textSize="50dp"
  165.         android:text="9"/>
  166.     <Button
  167.         android:id="@+id/button_except"
  168.         android:layout_columnSpan="1"
  169.         android:gravity="center"
  170.         android:layout_columnWeight="1"
  171.         android:layout_rowWeight="1"
  172.         android:layout_margin="1dp"
  173.         android:background="@color/white"
  174.         android:textSize="50dp"
  175.         android:text="/"/>
  176.     <Button
  177.         android:id="@+id/button_spot"
  178.         android:layout_columnSpan="1"
  179.         android:gravity="center"
  180.         android:layout_columnWeight="1"
  181.         android:layout_rowWeight="1"
  182.         android:layout_margin="1dp"
  183.         android:background="@color/white"
  184.         android:textSize="50dp"
  185.         android:text="."/>
  186.     <Button
  187.         android:id="@+id/button_00"
  188.         android:layout_columnSpan="1"
  189.         android:gravity="center"
  190.         android:layout_columnWeight="1"
  191.         android:layout_rowWeight="1"
  192.         android:layout_margin="1dp"
  193.         android:background="@color/white"
  194.         android:textSize="50dp"
  195.         android:text="0"/>
  196.     <Button
  197.         android:id="@+id/button_equal"
  198.         android:layout_columnSpan="1"
  199.         android:gravity="center"
  200.         android:layout_columnWeight="1"
  201.         android:layout_rowWeight="1"
  202.         android:layout_margin="1dp"
  203.         android:background="@color/white"
  204.         android:textSize="50dp"
  205.         android:text="="/>
  206. </GridLayout>

 Java部分源码：

  1. package com.example.pyfcalculator;
  2.  
  3. import androidx.appcompat.app.AppCompatActivity;
  4.  
  5. import android.os.Bundle;
  6. import android.text.TextUtils;
  7. import android.view.View;
  8. import android.widget.Button;
  9. import android.widget.TextView;
  10.  
  11. public class MainActivity extends AppCompatActivity implements View.OnClickListener {
  12.  
  13.     TextView textView;
  14.     Button button_return,button_00,button_01,button_02,button_03,
  15.             button_04,button_05,button_06,button_07,button_08,button_09,button_add,
  16.             button_clear,button_equal,button_except,button_reduce,button_ride,button_spot;
  17.  
  18.  
  19.     @Override
  20.     protected void onCreate(Bundle savedInstanceState) {
  21.         super.onCreate(savedInstanceState);
  22.         setContentView(R.layout.activity_main);
  23.         initViewAndListener();
  24.     }
  25.  
  26.  
  27.     //注册监听方法
  28.     protected void initViewAndListener(){
  29.         button_return=findViewById(R.id.button_return);
  30.         button_00=findViewById(R.id.button_00);
  31.         button_01=findViewById(R.id.button_01);
  32.         button_02=findViewById(R.id.button_02);
  33.         button_03=findViewById(R.id.button_03);
  34.         button_04=findViewById(R.id.button_04);
  35.         button_05=findViewById(R.id.button_05);
  36.         button_06=findViewById(R.id.button_06);
  37.         button_07=findViewById(R.id.button_07);
  38.         button_08=findViewById(R.id.button_08);
  39.         button_09=findViewById(R.id.button_09);
  40.         button_add=findViewById(R.id.button_add);
  41.         button_clear=findViewById(R.id.button_clear);
  42.         button_equal=findViewById(R.id.button_equal);
  43.         button_except=findViewById(R.id.button_except);
  44.         button_reduce=findViewById(R.id.button_reduce);
  45.         button_ride=findViewById(R.id.button_ride);
  46.         button_spot=findViewById(R.id.button_spot);
  47.  
  48.         button_return.setOnClickListener(this);
  49.         button_00.setOnClickListener(this);
  50.         button_01.setOnClickListener(this);
  51.         button_02.setOnClickListener(this);
  52.         button_03.setOnClickListener(this);
  53.         button_04.setOnClickListener(this);
  54.         button_05.setOnClickListener(this);
  55.         button_06.setOnClickListener(this);
  56.         button_07.setOnClickListener(this);
  57.         button_08.setOnClickListener(this);
  58.         button_09.setOnClickListener(this);
  59.         button_add.setOnClickListener(this);
  60.         button_clear.setOnClickListener(this);
  61.         button_equal.setOnClickListener(this);
  62.         button_except.setOnClickListener(this);
  63.         button_reduce.setOnClickListener(this);
  64.         button_ride.setOnClickListener(this);
  65.         button_spot.setOnClickListener(this);
  66.  
  67.         textView=findViewById(R.id.textview_01);
  68.     }
  69.  
  70.     private String num_in_now;//记录当前结果
  71.     private boolean flag=false;//记录计算器状态
  72.     int now_num=0;
  73.  
  74.     @Override
  75.     public void onClick(View view) {
  76.  
  77.         //获取文本框内容
  78.         String currentText=textView.getText().toString();
  79.  
  80.         switch (view.getId()){
  81.             case R.id.button_00:
  82.                 if ((textView.getText().toString().equals("0")))
  83.                     return;
  84.                 isflag("0");
  85.                 break;
  86.             case R.id.button_01:
  87.                 isflag("1");
  88.                 break;
  89.             case R.id.button_02:
  90.                 isflag("2");
  91.                 break;
  92.             case R.id.button_03:
  93.                 isflag("3");
  94.                 break;
  95.             case R.id.button_04:
  96.                 isflag("4");
  97.                 break;
  98.             case R.id.button_05:
  99.                 isflag("5");
  100.                 break;
  101.             case R.id.button_06:
  102.                 isflag("6");
  103.                 break;
  104.             case R.id.button_07:
  105.                 isflag("7");
  106.                 break;
  107.             case R.id.button_08:
  108.                 isflag("8");
  109.                 break;
  110.             case R.id.button_09:
  111.                 isflag("9");
  112.                 break;
  113.             case R.id.button_add:
  114. //                textView.setText(textView.getText()+"+");
  115.                 now_num++;
  116.                 if(now_num>1){
  117.                     equal();
  118.                 }
  119.                 isflag("+");
  120.                 break;
  121.             case R.id.button_except:
  122. //                textView.setText(textView.getText()+"/");
  123.                 now_num++;
  124.                 if(now_num>1){
  125.                     equal();
  126.                 }
  127.                 isflag("/");
  128.                 break;
  129.             case R.id.button_spot:
  130. //                textView.setText(textView.getText()+".");
  131.                 isflag(".");
  132.                 break;
  133.             case R.id.button_reduce:
  134. //                textView.setText(textView.getText()+"-");
  135.                 now_num++;
  136.                 if(now_num>1){
  137.                     equal();
  138.                 }
  139.                 isflag("-");
  140.                 break;
  141.             case R.id.button_ride:
  142. //                textView.setText(textView.getText()+"*");
  143.                 now_num++;
  144.                 if(now_num>1){
  145.                     equal();
  146.                 }
  147.                 isflag("*");
  148.                 break;
  149.             case R.id.button_clear:
  150.                 textView.setText("0");
  151.                 flag=false;
  152.                 now_num=0;
  153.                 break;
  154.             case R.id.button_return:
  155.                 if(TextUtils.isEmpty(textView.getText())){
  156.                     return;
  157.                 }
  158.                 if (currentText.substring(0,currentText.length()-1).length()>0){
  159.                     textView.setText(currentText.substring(0,currentText.length()-1));
  160.                 }
  161.                 else{
  162.                     textView.setText("0");
  163.                     flag=false;
  164.                     now_num=0;
  165.                 }
  166.                 break;
  167.             case R.id.button_equal:
  168.                 if(TextUtils.isEmpty(textView.getText())){
  169.                     return;
  170.                 }
  171.                 equal();
  172.                 flag=false;
  173.                 now_num=0;
  174.                 break;
  175.         }
  176.  
  177.     }
  178.  
  179.     private void equal(){
  180.         textView.setText(operation(textView.getText().toString()));
  181.     }
  182.  
  183.     //运算方法
  184.     private String operation(String string){
  185.         int index;
  186.         double num_1,num_2;
  187.         if (string.contains("+")){
  188.             index=string.indexOf("+");
  189.             num_1= Double.parseDouble(string.substring(0,index));
  190.             num_2= Double.parseDouble(string.substring(index+1,string.length()));
  191.             return num_1+num_2+"";
  192.         }
  193.         if (string.contains("-")){
  194.             index=string.indexOf("-");
  195.             if(index==0){
  196.                 String string_2=string.substring(1,string.length());
  197.                 int index_2=string_2.indexOf("-");
  198.                 num_1= Double.parseDouble(string_2.substring(0,index_2));
  199.                 num_2= Double.parseDouble(string_2.substring(index_2+1,string_2.length()));
  200.                 return (-(num_1+num_2))+"";
  201.             }else{
  202.                 num_1= Double.parseDouble(string.substring(0,index));
  203.                 num_2= Double.parseDouble(string.substring(index+1,string.length()));
  204.                 return num_1-num_2+"";
  205.             }
  206.  
  207.         }
  208.         if (string.contains("*")){
  209.             index=string.indexOf("*");
  210.             num_1= Double.parseDouble(string.substring(0,index));
  211.             num_2= Double.parseDouble(string.substring(index+1,string.length()));
  212.             return num_1*num_2+"";
  213.         }
  214.         if (string.contains("/")){
  215.             index=string.indexOf("/");
  216.             num_1= Double.parseDouble(string.substring(0,index));
  217.             num_2= Double.parseDouble(string.substring(index+1,string.length()));
  218.             return num_1/num_2+"";
  219.         }
  220.         return "error!!!";
  221.     }
  222.  
  223.     //判断0要不要被替换 看flag的状态 输入数字
  224.     private void isflag(String info){
  225.         if (flag){
  226.             textView.setText(textView.getText()+info);
  227.         }else{
  228.             if(info.equals(".")||info.equals("+")||info.equals("-")||info.equals("*")||info.equals("/")){
  229.                 textView.setText(textView.getText()+info);
  230.             }else {
  231.                 textView.setText(info);
  232.             }
  233.             flag=true;
  234.         }
  235.     }
  236.  
  237. }

其余资源没有太大难度，就不一展现了！！！ 

声明：本文内容由网友自发贡献，不代表【wpsshop博客】立场，版权归原作者所有，本站不承担相应法律责任。如您发现有侵权的内容，请联系我们。转载请注明出处：https://www.wpsshop.cn/w/从前慢现在也慢/article/detail/325306
推荐阅读
相关标签

Copyright © 2003-2013 www.wpsshop.cn 版权所有，并保留所有权利。