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：