课程设计之第二次冲刺—（12.2-12.3总结）

经过长时间的编写代码，我们把填空题的功能完善好了，这个阶段按照着我们的步伐进行，

我们在第二阶段把主要的功能写好了，然后第三阶段就是对app的一些其他细节的完善，还

有我们组员对于app的推广了。

填空题部分核心代码如下

package com.example.newapps;



import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Random;
import java.util.Stack;
import java.util.regex.Matcher;
import java.util.regex.Pattern;



import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Color;
import android.media.AudioManager;
import android.media.SoundPool;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

public class TianKong extends Activity {
    //private String expressing;
    private Spinner mySpinner;
    private int count = 0;
    private int TrueNum = 0;
    private int a = 0, b = 0,c=0,d=0,opnum = 0,opnum1=0,opnum2=0;
    private int TiShu = 0,TrueAnswer = 0;
    private SoundPool sp;
    private char op1,op2,op3;
    private ArrayAdapter<String> adapter;
    private int Spinner=0;
    private TextView myTextView;
    private EditText ed1;
    private TextView textView3,textView2,textView1,textView4,textView5;
    private int ready, yes, no;
    private int op;
    private Button button1,bt1;
    String str;
    
    private List<String> list = new ArrayList<String>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 无title
         requestWindowFeature(Window.FEATURE_NO_TITLE);
        // 全屏

        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.tiankong);
        ed1=(EditText)findViewById(R.id.editText1);
        myTextView = (TextView) findViewById(R.id.textView1);
        textView3 = (TextView) findViewById(R.id.textView6);
        textView2 = (TextView) findViewById(R.id.textView3);
        textView4 = (TextView) this.findViewById(R.id.textView5);
        textView5 = (TextView) this.findViewById(R.id.textView4);
        textView1 = (TextView) this.findViewById(R.id.textView1);
        button1 = (Button) this.findViewById(R.id.button2);
        bt1 = (Button) this.findViewById(R.id.button1);
        sp = new SoundPool(10, AudioManager.STREAM_SYSTEM, 5);
        ready = sp.load(this, R.raw.readygo, 1);
        yes = sp.load(this, R.raw.yes, 1);
        no = sp.load(this, R.raw.ohno, 1);
        textView5.setVisibility(View.INVISIBLE);
        ed1.setVisibility(View.INVISIBLE);
        bt1.setVisibility(View.INVISIBLE);
        list.add("5");
        list.add("6");
        list.add("7");
        list.add("8");
        list.add("9");
        list.add("10");
        Spinner=1;
        sp();
        button1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                showtext();
                button1.setVisibility(View.INVISIBLE);
                textView5.setVisibility(View.VISIBLE);
                textView2.setVisibility(View.VISIBLE);
                ed1.setVisibility(View.VISIBLE);
                bt1.setVisibility(View.VISIBLE);
                sp.play(ready, 1, 1, 0, 0, 1);
                Spinner=0;
                sp();
            }
        });
        bt1.setOnClickListener(new View.OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                 String str1,str2;
                 Double db1,db2=0.0;
                 textView4.setVisibility(View.VISIBLE);
                str=textView2.getText().toString();
                //Operating exp1 = new Operating(str);
                System.out.println(str);
                str1=String.valueOf(arithmetic(str));
                str2=ed1.getText().toString();
                
                db1=Double.parseDouble(str1);
                if(str2==null || str2.equalsIgnoreCase(""))
                        {
                    Toast.makeText(TianKong.this, "你没有输入答案，跳到下一题", 1).show();
                        }
                else if(str.matches("^[a-zA-Z]*"))
                {
                    Toast.makeText(TianKong.this, "你输入的格式错误，跳到下一题", 1).show();
                }
                else
                {
                db2=Double.parseDouble(str2);
                }
                System.out.println(db1);
                System.out.println(db2);
                if (db1.equals(db2)) {
                    TrueNum++;
                    textView4.setTextColor(Color.BLUE);
                    textView4.setText("答对了！");
                    ed1.setText("");
                    sp.play(yes, 1, 1, 0, 0, 1);
                } else {
                    
                    textView4.setTextColor(Color.RED);
                    textView4.setText("答错了！正确答案是："+db1);    
                    Toast.makeText(TianKong.this, "上一道题的题目为"+str, Toast.LENGTH_LONG).show();
                    ed1.setText("");
                    sp.play(no, 1, 1, 0, 0, 1);
                }
                
                showtext();
            }
        });
        
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    @Override
    public boolean onKeyDown(int keyCode,KeyEvent event)
    {
        if(keyCode==KeyEvent.KEYCODE_BACK&& event.getRepeatCount()==0)
        {
            dialog();
            return true;
        }
        return true;
    }
    protected void dialog()
    {
        AlertDialog.Builder builder=new Builder(TianKong.this);
        builder.setMessage("确定要退出吗？");
        builder.setTitle("提示");
        builder.setPositiveButton("确认", new android.content.DialogInterface.OnClickListener() {
            
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // TODO Auto-generated method stub
                dialog.dismiss();
                android.os.Process.killProcess(android.os.Process.myPid());
            }
        });
        builder.setNegativeButton("取消", new android.content.DialogInterface.OnClickListener() {
            
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // TODO Auto-generated method stub
                dialog.dismiss();
            }
        });
        builder.create().show();
    }
    public static class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.tiankong, container,
                    false);
            return rootView;

        }
    }
    void sp()
    {
        mySpinner = (Spinner) findViewById(R.id.spinner1);
        adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_spinner_item, list);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        mySpinner.setAdapter(adapter);
        mySpinner.setSelection(2);
        mySpinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {
                    public void onItemSelected(AdapterView<?> arg0, View arg1,
                            int arg2, long arg3) {
                        // TODO Auto-generated method stub
                        
                        /* 将mySpinner 显示 */
                        if(Spinner==1)
                        {
                            TiShu = Integer.parseInt(adapter.getItem(arg2)
                                    .toString().trim());
                        arg0.setVisibility(View.VISIBLE);
                        }
                        else {
                            textView3.setVisibility(View.INVISIBLE);
                            arg0.setVisibility(View.INVISIBLE);
                        }
                    }

                    public void onNothingSelected(AdapterView<?> arg0) {
                        // TODO Auto-generated method stub
                        myTextView.setText("NONE");
                        arg0.setVisibility(View.VISIBLE);
                    }
                });
    }
    void showtext() {
        int  e = 0, f = 0,  chioce = 0;
        int temp = 0;
        if (count == TiShu && TrueNum==TiShu) {
            new AlertDialog.Builder(this).setTitle("结果:").setMessage("恭喜你的答案全对了，继续努力哦！")
            .setPositiveButton("确定", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    button1.setVisibility(View.VISIBLE);
                    count=0;
                    TrueNum=0;
                    textView4.setText("");
                    
                    textView1.setVisibility(View.VISIBLE);
                    textView3.setVisibility(View.VISIBLE);
                    textView4.setVisibility(View.INVISIBLE);
                    textView2.setVisibility(View.INVISIBLE);
                    button1.setVisibility(View.VISIBLE);
                    textView5.setVisibility(View.INVISIBLE);
                    ed1.setVisibility(View.INVISIBLE);
                    bt1.setVisibility(View.INVISIBLE);
                    Spinner=1;
                    sp();
                }})
                .show();
            
        
        }
        else if(count == TiShu && TrueNum!=TiShu)
        {
            new AlertDialog.Builder(this).setTitle("结果").setMessage("你在"+TiShu+"题中答对了"+TrueNum+"题！请重新答题！")
            .setPositiveButton("确定", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                button1.setVisibility(View.VISIBLE);
                count=0;
                TrueNum=0;
                textView4.setText("");
                
                textView1.setVisibility(View.VISIBLE);
                textView3.setVisibility(View.VISIBLE);
                textView4.setVisibility(View.INVISIBLE);
                textView2.setVisibility(View.INVISIBLE);
                button1.setVisibility(View.VISIBLE);
                textView5.setVisibility(View.INVISIBLE);
                ed1.setVisibility(View.INVISIBLE);
                bt1.setVisibility(View.INVISIBLE);
                Spinner=1;
                sp();
            }})
            .show();


            
        }
        else {
            Random ra = new Random();
            
                a = ra.nextInt(20) + 20;
                b = ra.nextInt(20) + 20;
                c = ra.nextInt(20) + 20;
                d = ra.nextInt(20) + 20;
            
            op = Math.abs(ra.nextInt()) % 5 + 1;
            opnum = Math.abs(ra.nextInt()) % 4 + 1;
            opnum1 = Math.abs(ra.nextInt()) % 4 + 1;
            opnum2 = Math.abs(ra.nextInt()) % 4 + 1;
            switch (opnum) {
            case 1:
                op1 = '+';
                break;
            case 2:
                op1 = '-';
                break;
            case 3:
                op1 = '*';
                break;
            case 4:
                op1 = '/';
                break;
            }
            switch (opnum1) {
            case 1:
                op2 = '+';
                break;
            case 2:
                op2 = '-';
                break;
            case 3:
                op2 = '*';
                break;
            case 4:
                op2 = '/';
                break;
            }
            switch (opnum2) {
            case 1:
                op3 = '+';
                break;
            case 2:
                op3 = '-';
                break;
            case 3:
                op3 = '*';
                break;
            case 4:
                op3 = '/';
                break;
            }

            

            
            switch (op) {
            case 1:
                textView2.setText("("+a+""+op1+""+b+")"+op2+""+c+""+op3+""+d);
                break;
            case 2:
                textView2.setText("("+a+""+op1+""+b+""+op2+""+c+")"+op3+""+d);
                break;
            case 3:
                textView2.setText(a+""+op1+"("+b+""+op2+""+c+")"+op3+""+d);
                break;
            case 4:
                textView2.setText(a+""+op1+"("+b+""+op2+""+c+""+op3+""+d+")");
                break;
            case 5:
                textView2.setText(a+""+op1+""+b+""+op2+"("+c+""+op3+""+d+")");
                break;
            }
            
            

            
            count++;
        }
    }
    public static String parseExp(String expression){ 
        //String numberReg="^((?!0)\d+(\.\d+(?<!0))?)|(0\.\d+(?<!0))$"; 
        expression=expression.replaceAll("\s+", "").replaceAll("^\((.+)\)$", "$1"); 
        String checkExp="\d";
        Double db11;
        String minExp="^((\d+(\.\d+)?)|(\[\-\d+(\.\d+)?\]))[\+\-\*\/]((\d+(\.\d+)?)|(\[\-\d+(\.\d+)?\]))$"; 
        //最小表达式计算 
        if(expression.matches(minExp)){ 
            String result=calculate(expression); 
            System.out.println("+"+result);
            return Double.parseDouble(result)>=0?result:"["+result+"]"; 
        } 
        //计算不带括号的四则运算 
        String noParentheses="^[^\(\)]+$"; 
        String priorOperatorExp="(((\d+(\.\d+)?)|(\[\-\d+(\.\d+)?\]))[\*\/]((\d+(\.\d+)?)|(\[\-\d+(\.\d+)?\])))"; 
        String operatorExp="(((\d+(\.\d+)?)|(\[\-\d+(\.\d+)?\]))[\+\-]((\d+(\.\d+)?)|(\[\-\d+(\.\d+)?\])))"; 
        if(expression.matches(noParentheses)){ 
            Pattern patt=Pattern.compile(priorOperatorExp); 
            Matcher mat=patt.matcher(expression); 
            if(mat.find()){ 
                String tempMinExp=mat.group(); 
                expression=expression.replaceFirst(priorOperatorExp, parseExp(tempMinExp)); 
            }else{ 
                patt=Pattern.compile(operatorExp); 
                mat=patt.matcher(expression); 
                 
                if(mat.find()){ 
                    String tempMinExp=mat.group(); 
                    expression=expression.replaceFirst(operatorExp, parseExp(tempMinExp)); 
                } 
            } 
            return parseExp(expression); 
        } 
        //计算带括号的四则运算 
        String minParentheses="\([^\(\)]+\)"; 
        Pattern patt=Pattern.compile(minParentheses); 
        Matcher mat=patt.matcher(expression); 
        if(mat.find()){ 
            String tempMinExp=mat.group(); 
            expression=expression.replaceFirst(minParentheses, parseExp(tempMinExp)); 
        } 
        return parseExp(expression); 
    }

    public static double arithmetic(String exp){ 
        String result1 = parseExp(exp).replaceAll("[\[\]]", ""); 
        Double db11=Double.parseDouble(result1);
        DecimalFormat df=new DecimalFormat("######0.00"); 
        String result=String.valueOf(df.format(db11));
        return Double.parseDouble(result); 
    } 
    
    
    public static String calculate(String exp){ 
        exp=exp.replaceAll("[\[\]]", ""); 
        String number[]=exp.replaceFirst("(\d)[\+\-\*\/]", "$1,").split(","); 
        BigDecimal number1=new BigDecimal(number[0]); 
        BigDecimal number2=new BigDecimal(number[1]); 
        BigDecimal number3=new BigDecimal("0");
        BigDecimal result=null; 
         
        String operator=exp.replaceFirst("^.*\d([\+\-\*\/]).+$", "$1"); 
        if("+".equals(operator)){ 
            result=number1.add(number2); 
        }else if("-".equals(operator)){ 
            result=number1.subtract(number2); 
        }else if("*".equals(operator)){ 
            result=number1.multiply(number2); 
        }else if("/".equals(operator)){ 
            try
            {
            result=number1.divide(number2,5,BigDecimal.ROUND_HALF_UP); 
            }catch(ArithmeticException e)
            {
                result=number3;
            }
            
        } 
         
        return result!=null?result.toString():null; 
    }
    
}

 我们团队的Github地址：https://github.com/yuhancheng

燃尽图如下：