package com.tdtxdcxm.mycalculator.slice.myexception;

public class MyArgumentException extends Exception{
    public MyArgumentException(String s) {
        super(s);
    }
}

package com.tdtxdcxm.mycalculator.slice.util;

import com.tdtxdcxm.mycalculator.slice.myexception.MyArgumentException;
import ohos.agp.components.Text;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.ArrayList;

class StructArrayListType{
    int type = -1;
    String value = "";
    public static Text displaytext;
    public StructArrayListType(String value){
        this.value = value;
        generateType();
    }

    public void setValue(String value) {
        this.value = value;
    }

    public void generateType(){
        if(value.equals("")){
            return;
        }
        if(value.length() == 1){
            switch (value) {
                case "÷":
                    type = 1;
                    break;
                case "×":
                    type = 2;
                    break;
                case "-":
                    type = 3;
                    break;
                case "+":
                    type = 4;
                    break;
                default:
                    type = 0;
                    break;
            }
            return;
        }

        if(value.indexOf("/") != -1){
            int i = value.indexOf("/");

            String a = value.substring(0,i);

            BigDecimal bigDecimal_a = new BigDecimal(a);
            BigDecimal bigDecimal_b = new BigDecimal("100");


            double t = bigDecimal_a.divide(bigDecimal_b,15, RoundingMode.HALF_UP).doubleValue();
            value = String.valueOf(t);
        }
        type = 0;
    }

    public String toString(){
        return "type is "+type+","+"value is "+value;
    }
}


public class CalCulatorGo{
    public static Text displaytext;
    private static final String[] type = {"number","÷","×","-","+",".","%"};
    private String express = "";
    private final ArrayList<StructArrayListType> expersslist = new ArrayList<>();

    public CalCulatorGo(String express) throws MyArgumentException {
        if(express.equals("")){
            throw new MyArgumentException("计算的表达式为空！");
        }
        this.express = express;
        StructArrayListType.displaytext = displaytext;
    }

    public void preDo(){
        //将表达式字符串按照数字和运算符每个单独提取出来按照原顺序放入expersslist
        StringBuilder stringBuilder = new StringBuilder();
        int operationsigncount = 0;
        for(int i = 0;i < express.length();i++){
            char ch = express.charAt(i);
            if((ch >= '0' && ch <= '9') || ch == '.' || ch == '%'){
                if(ch == '%'){
                    stringBuilder.append("/100");
                }
                else {
                    stringBuilder.append(ch);
                }
                operationsigncount = 0;
                continue;
            }

            if(operationsigncount != 2){
                operationsigncount++;

                if(operationsigncount == 2){
                    stringBuilder.append(ch);
                    continue;
                }

                expersslist.add(new StructArrayListType(stringBuilder.toString()));
                stringBuilder.delete(0,stringBuilder.length());
                stringBuilder.append(ch);

                if(operationsigncount != 2){
                    expersslist.add(new StructArrayListType(stringBuilder.toString()));
                    stringBuilder.delete(0,stringBuilder.length());
                }
                continue;
            }
            stringBuilder.append(ch);
        }
        expersslist.add(new StructArrayListType(stringBuilder.toString()));

        checklist();
    }

    public void doMutAndDiv() throws ArithmeticException{
        if(expersslist.size() == 0){
            return;
        }
        for(int i = 0;i < expersslist.size();i++){
            if(expersslist.get(i).type == 1 || expersslist.get(i).type == 2){
                double result = dofinalwork(i);
                //System.out.println("result is "+result);

                expersslist.get(i+1).setValue(String.valueOf(result));

                StructArrayListType structArrayListType1 = expersslist.get(i - 1);
                StructArrayListType structArrayListType2 = expersslist.get(i);

                expersslist.remove(structArrayListType1);
                expersslist.remove(structArrayListType2);
                i = 0;
            }
        }
        //checklist();
    }

    public double doSubAndAdd(){
        for (int i = 0; i < expersslist.size(); i++) {
            if(expersslist.get(i).type == 3 || expersslist.get(i).type == 4){
                double result = dofinalwork(i);
                //System.out.println("result is "+result);

                expersslist.get(i+1).setValue(String.valueOf(result));
                StructArrayListType structArrayListType1 = expersslist.get(i - 1);
                StructArrayListType structArrayListType2 = expersslist.get(i);

                expersslist.remove(structArrayListType1);
                expersslist.remove(structArrayListType2);
                i = 0;
            }
        }
        //checklist();
        return Double.parseDouble(expersslist.get(0).value);
    }

    public double doAllOperation() throws ArithmeticException{
        preDo();
        doMutAndDiv();
        return doSubAndAdd();
    }

    public double dofinalwork(int i) throws ArithmeticException{

        String a = expersslist.get(i - 1).value;
        String b = expersslist.get(i + 1).value;

        BigDecimal bigDecimal_a = new BigDecimal(a);
        BigDecimal bigDecimal_b = new BigDecimal(b);

        switch (expersslist.get(i).type) {
            case 1:
                return bigDecimal_a.divide(bigDecimal_b, 15,RoundingMode.HALF_UP).doubleValue();
            case 2:
                return bigDecimal_a.multiply(bigDecimal_b).doubleValue();
            case 3:
                return bigDecimal_a.subtract(bigDecimal_b).doubleValue();
            case 4:
                return bigDecimal_a.add(bigDecimal_b).doubleValue();
            default:
                break;
        }
        return -0.0000000;
    }

    public void checklist(){
        System.out.println("<___________________________");
        for(int i = 0;i < expersslist.size();i++){
            System.out.println(expersslist.get(i).toString());
        }
        System.out.println("___________________________>");
    }

}

package com.tdtxdcxm.mycalculator.slice;

import com.tdtxdcxm.mycalculator.ResourceTable;
import com.tdtxdcxm.mycalculator.slice.myexception.MyArgumentException;
import com.tdtxdcxm.mycalculator.slice.util.CalCulatorGo;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.colors.RgbColor;
import ohos.agp.components.Component;
import ohos.agp.components.Text;
import ohos.agp.components.element.ShapeElement;
import ohos.multimodalinput.event.TouchEvent;

public class MainAbilitySlice extends AbilitySlice {
    private Text displaytext;
    private Text clear,percentage,backspace,division;
    private Text one,two,three,multiplication;
    private Text four,five,six,subtraction;
    private Text seven,eight,nine,addition;
    private Text zero,doublezero,point,equalsign;


    public void initMASComponents(){
        displaytext = (Text) findComponentById(ResourceTable.Id_displaytext);

        clear = (Text) findComponentById(ResourceTable.Id_clear);
        percentage = (Text) findComponentById(ResourceTable.Id_percentage);
        backspace = (Text) findComponentById(ResourceTable.Id_backspace);
        division = (Text) findComponentById(ResourceTable.Id_division);

        one = (Text) findComponentById(ResourceTable.Id_one);
        two = (Text) findComponentById(ResourceTable.Id_two);
        three = (Text) findComponentById(ResourceTable.Id_three);
        multiplication = (Text) findComponentById(ResourceTable.Id_multiplication);

        four = (Text) findComponentById(ResourceTable.Id_four);
        five = (Text) findComponentById(ResourceTable.Id_five);
        six = (Text) findComponentById(ResourceTable.Id_six);
        subtraction = (Text) findComponentById(ResourceTable.Id_subtraction);

        seven = (Text) findComponentById(ResourceTable.Id_seven);
        eight = (Text) findComponentById(ResourceTable.Id_eight);
        nine = (Text) findComponentById(ResourceTable.Id_nine);
        addition = (Text) findComponentById(ResourceTable.Id_addition);

        zero = (Text) findComponentById(ResourceTable.Id_zero);
        doublezero = (Text) findComponentById(ResourceTable.Id_doublezero);
        point = (Text) findComponentById(ResourceTable.Id_point);
        equalsign = (Text) findComponentById(ResourceTable.Id_equalsign);



        /************************************first-row*********************************/
        clear.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.setText("");
            }
        });
        clear.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    clear.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(214, 253, 227));

                    clear.setBackground(shapeElement);
                    }
                return true;
            }
        });

        percentage.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                String s = displaytext.getText();
                if(s.equals("")){
                    return;
                }
                if(     s.charAt(s.length() - 1) == '÷'
                        || s.charAt(s.length() - 1) == '×'
                        || s.charAt(s.length() - 1) == '+'
                        || s.charAt(s.length() - 1) == '-'
                        || s.charAt(s.length() - 1) == '%'
                        || s.charAt(s.length() - 1) == '.'){
                    return;
                }

                displaytext.append("%");
            }
        });
        percentage.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    percentage.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(214, 253, 227));

                    percentage.setBackground(shapeElement);
                }
                return true;
            }
        });

        backspace.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                //displaytext.delete(1);//API 7编译，运行在API 7的机器里才有效果

                String s = displaytext.getText();

                if(s.equals("")){
                    return;
                }
                displaytext.setText(s.substring(0,s.length() - 1));

            }
        });
        backspace.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    backspace.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(214, 253, 227));

                    backspace.setBackground(shapeElement);
                }
                return true;
            }
        });

        division.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                String s = displaytext.getText();
                if(s.equals("")){
                    return;
                }
                if(     s.charAt(s.length() - 1) == '÷'
                        || s.charAt(s.length() - 1) == '×'
                        || s.charAt(s.length() - 1) == '+'
                        || s.charAt(s.length() - 1) == '-'
                        || s.charAt(s.length() - 1) == '.'){
                    return;
                }

                displaytext.append("÷");
            }
        });
        division.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    division.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(214, 253, 227));

                    division.setBackground(shapeElement);
                }
                return true;
            }
        });
        /************************************first-row*********************************/

        /************************************second-row*********************************/
        one.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("1");
            }
        });
        one.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    one.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(207, 241, 243));

                    one.setBackground(shapeElement);
                }
                return true;
            }
        });

        two.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("2");
            }
        });
        two.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    two.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(207, 241, 243));

                    two.setBackground(shapeElement);
                }
                return true;
            }
        });

        three.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("3");
            }
        });
        three.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    three.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(207, 241, 243));

                    three.setBackground(shapeElement);
                }
                return true;
            }
        });

        multiplication.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                String s = displaytext.getText();
                if(s.equals("")){
                    return;
                }
                if(     s.charAt(s.length() - 1) == '÷'
                        || s.charAt(s.length() - 1) == '×'
                        || s.charAt(s.length() - 1) == '+'
                        || s.charAt(s.length() - 1) == '-'
                        || s.charAt(s.length() - 1) == '.'){
                    return;
                }
                displaytext.append("×");
            }
        });
        multiplication.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    multiplication.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(207, 241, 243));

                    multiplication.setBackground(shapeElement);
                }
                return true;
            }
        });
        /************************************second-row*********************************/

        /************************************three-row*********************************/
        four.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("4");
            }
        });
        four.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    four.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(237, 253, 255));

                    four.setBackground(shapeElement);
                }
                return true;
            }
        });

        five.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("5");
            }
        });
        five.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    five.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(237, 253, 255));

                    five.setBackground(shapeElement);
                }
                return true;
            }
        });

        six.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("6");
            }
        });
        six.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    six.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(237, 253, 255));

                    six.setBackground(shapeElement);
                }
                return true;
            }
        });

        subtraction.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                String s = displaytext.getText();
                if(s.equals("")){
                    return;
                }
                if(s.charAt(s.length() - 1) == '.'){
                    return;
                }
                if(s.length() >= 3
                        && s.charAt(s.length() - 1) == '-'
                        && s.charAt(s.length() - 1 - 1) == '-'){
                    return;
                }
                displaytext.append("-");
            }
        });
        subtraction.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    subtraction.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(237, 253, 255));

                    subtraction.setBackground(shapeElement);
                }
                return true;
            }
        });
        /************************************third-row*********************************/

        /************************************fourth-row*********************************/
        seven.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("7");
            }
        });
        seven.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    seven.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(237, 248, 250));

                    seven.setBackground(shapeElement);
                }
                return true;
            }
        });

        eight.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("8");
            }
        });
        eight.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    eight.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(237, 248, 250));

                    eight.setBackground(shapeElement);
                }
                return true;
            }
        });

        nine.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("9");
            }
        });
        nine.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    nine.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(237, 248, 250));

                    nine.setBackground(shapeElement);
                }
                return true;
            }
        });

        addition.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                String s = displaytext.getText();
                if(s.equals("")){
                    return;
                }
                if(     s.charAt(s.length() - 1) == '÷'
                        || s.charAt(s.length() - 1) == '×'
                        || s.charAt(s.length() - 1) == '+'
                        || s.charAt(s.length() - 1) == '-'
                        || s.charAt(s.length() - 1) == '.'){
                    return;
                }

                displaytext.append("+");
            }
        });
        addition.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    addition.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(237, 248, 250));

                    addition.setBackground(shapeElement);
                }
                return true;
            }
        });
        /************************************fourth-row*********************************/

        /************************************fifth-row*********************************/
        zero.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("0");
            }
        });
        zero.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    zero.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(247, 249, 250));

                    zero.setBackground(shapeElement);
                }
                return true;
            }
        });

        doublezero.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                displaytext.append("00");
            }
        });
        doublezero.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    doublezero.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(247, 249, 250));

                    doublezero.setBackground(shapeElement);
                }
                return true;
            }
        });

        point.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                String s = displaytext.getText();
                if(s.equals("")){
                    return;
                }
                if(     s.charAt(s.length() - 1) == '÷'
                        || s.charAt(s.length() - 1) == '×'
                        || s.charAt(s.length() - 1) == '+'
                        || s.charAt(s.length() - 1) == '-'
                        || s.charAt(s.length() - 1) == '%'
                        || s.charAt(s.length() - 1) == '.'){
                    return;
                }
                displaytext.append(".");
            }
        });
        point.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    point.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(247, 249, 250));

                    point.setBackground(shapeElement);
                }
                return true;
            }
        });

        equalsign.setClickedListener(new Component.ClickedListener() {
            @Override
            public void onClick(Component component) {
                String s = displaytext.getText();
                if(s.equals("")){
                    return;
                }
                char lastchar = s.charAt(s.length() - 1);
                char firstchar = s.charAt(0);
                boolean haveoperate = false;
                if(     lastchar == '÷'
                        || lastchar == '×'
                        || lastchar == '+'
                        || lastchar == '-'
                        || lastchar == '.'
                        || firstchar == '-'){
                    displaytext.setText("表达式错误！");
                    return;
                }

                for(int i = 0;i < s.length();i++){
                    char ch = s.charAt(i);
                    if(     ch == '÷'
                            || ch == '×'
                            || ch == '+'
                            || ch == '-'
                            || ch == '%'){
                        haveoperate = true;
                        break;
                    }
                }
                if(!haveoperate){
                    return;
                }
                else{
                    //System.out.println("这里了！");
                    CalCulatorGo calCulatorGo = null;
                    try {
                        calCulatorGo = new CalCulatorGo(s);
                    } catch (MyArgumentException e) {
                        e.printStackTrace();
                    }


                    try{
                        assert calCulatorGo != null;
                        double finalresult = calCulatorGo.doAllOperation();
                        displaytext.setText(""+finalresult);
                    }
                    catch (ArithmeticException e){
                        displaytext.setText("算术异常！");
                        e.printStackTrace();
                    }

                    //calCulatorGo.checklist();
                }


            }
        });
        equalsign.setTouchEventListener(new Component.TouchEventListener() {
            @Override
            public boolean onTouchEvent(Component component, TouchEvent touchEvent) {
                int i = touchEvent.getAction();
                if(i ==  TouchEvent.PRIMARY_POINT_DOWN){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setShape(1);
                    shapeElement.setRgbColor(new RgbColor(187, 255, 255));

                    equalsign.setBackground(shapeElement);
                }
                if(i == TouchEvent.PRIMARY_POINT_UP){
                    ShapeElement shapeElement = new ShapeElement();
                    shapeElement.setRgbColor(new RgbColor(247, 249, 250));

                    equalsign.setBackground(shapeElement);
                }
                return true;
            }
        });
        /************************************fourth-row*********************************/
    }

    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_ability_main);
        initMASComponents();
        CalCulatorGo.displaytext = displaytext;
    }

    @Override
    protected void onInactive() {
        super.onInactive();
    }

    @Override
    public void onActive() {
        super.onActive();
    }

    @Override
    protected void onBackground() {
        super.onBackground();
    }

    @Override
    public void onForeground(Intent intent) {
        super.onForeground(intent);
    }

    @Override
    protected void onStop() {
        super.onStop();
    }
}

package com.tdtxdcxm.mycalculator;

import com.tdtxdcxm.mycalculator.slice.MainAbilitySlice;
import ohos.aafwk.ability.Ability;
import ohos.aafwk.content.Intent;


public class MainAbility extends Ability {
    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setMainRoute(MainAbilitySlice.class.getName());
    }
}

package com.tdtxdcxm.mycalculator;

import ohos.aafwk.ability.AbilityPackage;

public class MyApplication extends AbilityPackage {
    @Override
    public void onInitialize() {
        super.onInitialize();
    }
}

<?xml version="1.0" encoding="UTF-8" ?>
<shape xmlns:ohos="http://schemas.huawei.com/res/ohos"
       ohos:shape="rectangle">
    <solid
        ohos:color="#FFFFFF"/>
</shape>

<?xml version="1.0" encoding="utf-8"?>
<DirectionalLayout
    xmlns:ohos="http://schemas.huawei.com/res/ohos"
    ohos:height="match_parent"
    ohos:width="match_parent"
    ohos:alignment="center"
    ohos:orientation="vertical">
    <Text
        ohos:id="$+id:displaytext"
        ohos:height="0"
        ohos:weight="3.5"
        ohos:width="match_parent"

        ohos:auto_font_size="true"
        ohos:hint="计算..."
        ohos:text_alignment="center"
        ohos:text_color="#FFC354C3"
        ohos:multiple_lines="true">
    </Text>
    <DirectionalLayout
        ohos:id="$+id:operationarea"
        ohos:height="0"
        ohos:weight="6.5"
        ohos:width="match_parent"

        ohos:alignment="center"
        ohos:orientation="vertical"

        ohos:background_element="#FFFFFFFF">
        <DirectionalLayout
            ohos:id="$+id:firstrow"
            ohos:height="0"
            ohos:weight="1"
            ohos:width="match_parent"

            ohos:alignment="center"
            ohos:orientation="horizontal"

            ohos:background_element="#FFD6FDE3">
            <Text
                ohos:id="$+id:clear"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="C"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:percentage"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="%"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:backspace"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="B"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:division"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="÷"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
        </DirectionalLayout>
        <DirectionalLayout
            ohos:id="$+id:secondrow"
            ohos:height="0"
            ohos:weight="1"
            ohos:width="match_parent"

            ohos:alignment="center"
            ohos:orientation="horizontal"

            ohos:background_element="#FFCFF1F3">
            <Text
                ohos:id="$+id:one"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="1"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:two"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="2"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:three"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="3"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:multiplication"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="×"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
        </DirectionalLayout>
        <DirectionalLayout
            ohos:id="$+id:thirdrow"
            ohos:height="0"
            ohos:weight="1"
            ohos:width="match_parent"

            ohos:alignment="center"
            ohos:orientation="horizontal"

            ohos:background_element="#FFEDFDFF">
            <Text
                ohos:id="$+id:four"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="4"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:five"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="5"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:six"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="6"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:subtraction"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="-"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
        </DirectionalLayout>
        <DirectionalLayout
            ohos:id="$+id:fourthrow"
            ohos:height="0"
            ohos:weight="1"
            ohos:width="match_parent"

            ohos:alignment="center"
            ohos:orientation="horizontal"

            ohos:background_element="#FFEDF8FA">
            <Text
                ohos:id="$+id:seven"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="7"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:eight"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="8"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:nine"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="9"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:addition"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="+"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
        </DirectionalLayout>
        <DirectionalLayout
            ohos:id="$+id:fifthrow"
            ohos:height="0"
            ohos:weight="1"
            ohos:width="match_parent"

            ohos:alignment="center"
            ohos:orientation="horizontal"

            ohos:background_element="#FFF7F9FA">
            <Text
                ohos:id="$+id:zero"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="0"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:doublezero"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="00"
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:point"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="."
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
            <Text
                ohos:id="$+id:equalsign"
                ohos:height="match_parent"
                ohos:width="0"
                ohos:weight="1"

                ohos:text="="
                ohos:text_size="50vp"
                ohos:text_alignment="center">
            </Text>
        </DirectionalLayout>
    </DirectionalLayout>
</DirectionalLayout>