小学四则运算APP 最后阶段

团队成员：陈淑筠、杨家安、陈曦

团队选题：小学四则运算APP

这次发布的是我们APP的最终版本！图片背景有根据用户需求改变！还增加了草稿纸运算的画布功能！

运行结果如下：

package com.example.calculator;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
    
    private Button xunlian;
    private Button panduan;
    private Button xuanze;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        xunlian=(Button)findViewById(R.id.button1);
        panduan=(Button)findViewById(R.id.button4);
        xuanze=(Button)findViewById(R.id.button2);
        xunlian.setOnClickListener(new OnClickListener() {//填空题
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent=new Intent();
                intent.setClass(MainActivity.this, CalculatorSet.class);
                startActivity(intent);
                MainActivity.this.finish();
            }
        });
        panduan.setOnClickListener(new OnClickListener() {//判断题
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent2=new Intent();
                intent2.setClass(MainActivity.this,panduanset.class);
                startActivity(intent2);
                MainActivity.this.finish();
            }
        });
        xuanze.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent3=new Intent();
                intent3.setClass(MainActivity.this, ChoiceSet.class);
                startActivity(intent3);
                MainActivity.this.finish();
            }
        });
    }

    @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;
    }

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/lovely3"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="93dp"
        android:text="@string/hello_world"
        android:textSize="@dimen/btnTextSize" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button4"
        android:layout_alignRight="@+id/textView2"
        android:layout_below="@+id/textView2"
        android:layout_marginTop="44dp"
        android:text="进入普通训练系统"
        android:textSize="@dimen/btnTextSizes" />

    <Button
        android:id="@+id/button4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView2"
        android:layout_alignRight="@+id/textView2"
        android:layout_below="@+id/button1"
        android:text="@string/panduan1"
        android:textSize="@dimen/btnTextSizes" />

    <Button
        android:id="@+id/button2"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button4"
        android:layout_alignRight="@+id/button4"
        android:layout_below="@+id/button4"
        android:text="进入选择题训练系统"
        android:textSize="@dimen/btnTextSizes" />

    <Button
        android:id="@+id/button3"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button4"
        android:layout_alignRight="@+id/button2"
        android:layout_below="@+id/button2"
        android:text="进入考试题目系统"
        android:textSize="@dimen/btnTextSizes" />

</RelativeLayout>

package com.example.calculator;

import java.text.ChoiceFormat;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;

public class CalculatorSet extends Activity{
    private TextView number;
    private RadioGroup radio;
    private RadioButton r;
    private int i=0,g;
    private Button xunlian;
    private int []number1=new int[]{0,1,2,3};
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activtity_calculator_set);
        number=(TextView)findViewById(R.id.number1);
        radio=(RadioGroup)findViewById(R.id.group);
        xunlian=(Button)findViewById(R.id.xunlian);
        radio.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            
            @Override
            public void onCheckedChanged(RadioGroup arg0, int arg1) {
                // TODO Auto-generated method stub
                r=(RadioButton)findViewById(arg1);
            }
        });
       xunlian.setOnClickListener(new OnClickListener() {
        
        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            for (int g=0; g<4;g++){
                   RadioButton r=(RadioButton)radio.getChildAt(g);
                    if(r.isChecked()){
                     i=number1[g];
                     break;
                    }
                    
                }
            g=Integer.valueOf(number.getText().toString());
            Intent intent=new Intent();
            Bundle bundle=new Bundle();
            bundle.putInt("suanfa", i);
            bundle.putInt("shumu",g);
            intent.setClass(CalculatorSet.this,CalculatorActivity.class);
            intent.putExtras(bundle);
            startActivity(intent);
        }
    });    
    }

    @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;
    }

}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:background="@drawable/lovely1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="23dp"
        android:text="@string/title_activity_set"
        android:textSize="30sp" />

       <RadioGroup
           android:id="@+id/panduangroup"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_below="@+id/textView1"
           android:layout_centerHorizontal="true"
           android:layout_marginTop="125dp"
           android:orientation="horizontal" >

           <RadioButton
               android:id="@+id/radio0"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:text="@string/add" />

           <RadioButton
               android:id="@+id/radio2"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:layout_alignLeft="@+id/radio0"
               android:layout_below="@+id/radio0"
               android:text="@string/jian" />

           <RadioButton
               android:id="@+id/radio3"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:text="@string/cheng" />

           <RadioButton
               android:id="@+id/radio4"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:text="@string/chu" />
       </RadioGroup>

       <TextView
           android:id="@+id/textView2"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_alignParentLeft="true"
           android:layout_below="@+id/textView1"
           android:layout_marginLeft="14dp"
           android:layout_marginTop="41dp"
           android:text="@string/the_number_of_calculator"
           android:textSize="20sp" />

       <EditText
           android:id="@+id/panduannumber"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_alignBottom="@+id/textView2"
           android:layout_toRightOf="@+id/textView2"
           android:ems="10"
           android:inputType="number" />

       <Button
           android:id="@+id/panduanxunlian"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_alignParentLeft="true"
           android:layout_alignRight="@+id/panduannumber"
           android:layout_below="@+id/panduangroup"
           android:layout_marginTop="74dp"
           android:text="训练开始" />

</RelativeLayout>

package com.example.calculator;

import java.util.Random;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class CalculatorActivity extends Activity {
    private final Random num1=new Random();
    private final Random num2=new Random();
    private final Random r = new Random();
    private Button next;
    private char[] ch = {'+','-','*','/'};//字符数组
    //private int[]puanduan;
    private int index; //随机数，小于数组的长度数, 0~3
    private char a;
    private TextView text1,text2,text3;
    private EditText answer;
    private Button surebutton;//确定按钮
    private Button caogaozhi;//草稿纸
    private int i,m=0;
    private String c;
    private String e;
    private String b;
    private int i1,i2,i3;
    private int n=0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_calculator);
        Bundle bundle=getIntent().getExtras();
        index=bundle.getInt("suanfa");
        a=ch[index];
        i=bundle.getInt("shumu");
        final String[]puanduan=new String[i];
        final String[]title1=new String[100];
        text1=(TextView)findViewById(R.id.textView1);//随机数字
        text2=(TextView)findViewById(R.id.textView2);//运算符号
        text3=(TextView)findViewById(R.id.textView3);//随机数字
        answer=(EditText)findViewById(R.id.editText1);//运算结果
        next=(Button)findViewById(R.id.next);
        caogaozhi=(Button)findViewById(R.id.caogaozhi);
        String c=String.valueOf(num1.nextInt(100));
        i2=Integer.valueOf(c);
        String d=String.valueOf(a);
        String e=String.valueOf(num2.nextInt(100));
        i3=Integer.valueOf(e);
        text1.setText(c);//随机数1-100
        text2.setText(d);//随机运算符+,-,*,/
        text3.setText(e);//随机数1-100
        title1[n]=c+d+e;
        n++;
        surebutton=(Button)findViewById(R.id.surebutton);//确定按钮
        surebutton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                final String b=answer.getText().toString();//获取输入的数值
                i1=Integer.valueOf(b);
                switch(index){
                case 0:
                {
                    if(i1==(i2+i3))
                    {
                        Toast.makeText(CalculatorActivity.this, "正确"+b, Toast.LENGTH_SHORT).show();
                        puanduan[m]="正确";
                    }
                    else
                    {
                        Toast.makeText(CalculatorActivity.this, "错误"+b, Toast.LENGTH_SHORT).show();
                        puanduan[m]="错误";
                    }
                    break;
                }
                case 1:
                {
                    if(i1==(i2-i3))
                    {
                        Toast.makeText(CalculatorActivity.this, "正确"+b, Toast.LENGTH_SHORT).show();
                        puanduan[m]="正确";
                    }
                    else
                    {
                        Toast.makeText(CalculatorActivity.this, "错误"+b, Toast.LENGTH_SHORT).show();
                        puanduan[m]="错误";
                    }
                    break;
                }
                case 2:{
                    if(i1==(i2*i3))
                    {
                        Toast.makeText(CalculatorActivity.this, "正确"+b, Toast.LENGTH_SHORT).show();
                        puanduan[m]="正确";
                    }
                    else
                    {
                        Toast.makeText(CalculatorActivity.this, "错误"+b, Toast.LENGTH_SHORT).show();
                        puanduan[m]="错误";
                    }
                    break;        
                }
                case 3:
                {
                    if(i3!=0){
                    if(i1==(i2/i3))
                    {
                        Toast.makeText(CalculatorActivity.this, "正确"+b, Toast.LENGTH_SHORT).show();
                        puanduan[m]="正确";
                    }
                    else
                    {
                        Toast.makeText(CalculatorActivity.this, "错误"+b, Toast.LENGTH_SHORT).show();
                        puanduan[m]="错误";
                    }
                    }
                    break;
                }
                }
                i--;
                m++;
                if(i==0){
                    Toast.makeText(CalculatorActivity.this,"已经到了了题目个数!",Toast.LENGTH_LONG ).show();
                    
                }
                else{
                    String c=String.valueOf(num1.nextInt(100));
                    i2=Integer.valueOf(c);
                    String d=String.valueOf(a);
                    String e=String.valueOf(num2.nextInt(100));
                    i3=Integer.valueOf(e);
                    text1.setText(c);//随机数1-100
                    text2.setText(d);//随机运算符+,-,*,/
                    text3.setText(e);//随机数1-100    
                    title1[n]=c+d+e;
                    n++;
                    answer.setText(null);
                }
            }
        });
        next.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                if(i==0){
                Intent intent=new Intent();
                Bundle bundle2=new Bundle();
                bundle2.putStringArray("panduan", puanduan);
                bundle2.putStringArray("titlearry", title1);
                bundle2.putInt("number", m);
                intent.putExtras(bundle2);
                intent.setClass(CalculatorActivity.this,resultActivity.class);
                startActivity(intent);
                CalculatorActivity.this.finish();
                }
                else
                    Toast.makeText(CalculatorActivity.this,"不到题目个数，请继续", Toast.LENGTH_LONG).show();
            }
        });
        caogaozhi.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent=new Intent();
                intent.setClass(CalculatorActivity.this, HuabuActivity.class);
                startActivity(intent);
                CalculatorActivity.this.finish();
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.calculator, menu);
        return true;
    }

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/lovely3"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".CalculatorActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="100dp" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="30dp"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView1"
        android:layout_alignBottom="@+id/textView1"
        android:layout_toRightOf="@+id/textView1" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView2"
        android:layout_alignBottom="@+id/textView2"
        android:layout_toRightOf="@+id/textView2" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView3"
        android:layout_alignBottom="@+id/textView3"
        android:layout_toRightOf="@+id/textView3"
        android:text="=" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView4"
        android:layout_alignBottom="@+id/textView4"
        android:layout_marginLeft="38dp"
        android:layout_toRightOf="@+id/textView4"
        android:ems="10"
        android:inputType="number" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/surebutton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/editText1"
        android:layout_marginTop="88dp"
        android:text="确定" />

    <Button
        android:id="@+id/caogaozhi"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/next"
        android:layout_alignRight="@+id/surebutton"
        android:layout_below="@+id/surebutton"
        android:text="草稿纸" />

    <Button
        android:id="@+id/next"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/surebutton"
        android:layout_alignRight="@+id/surebutton"
        android:layout_below="@+id/caogaozhi"
        android:text="打印分数" />

</RelativeLayout>

package com.example.calculator;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.RadioGroup.OnCheckedChangeListener;

public class resultActivity extends Activity {
    private TextView number;
    private TextView panduan;
    //private TextView sum;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_result);
        Bundle bundle=getIntent().getExtras();
        number=(TextView)findViewById(R.id.thenumber);
        panduan=(TextView)findViewById(R.id.pan);
         int i=bundle.getInt("number");
         String []puanduan=bundle.getStringArray("panduan");
         String []title1=bundle.getStringArray("titlearry");
         String aa="";
         String aaa="";
        for(int g=0;g<i;g++){
            aa+=title1[g]+"\n";
            aaa+=puanduan[g]+"\n";
            number.setText(aa);
            panduan.setText(aaa);;
        }
        }

    @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;
    }

}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/lovely2"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="14dp"
        android:text="@string/result" 
        android:textSize="30sp"/>

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textView2"
        android:layout_toRightOf="@+id/textView1"
        android:text="@string/panduan"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="14dp"
        android:layout_toLeftOf="@+id/textView1"
        android:text="@string/number"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/thenumber"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView2"
        android:layout_below="@+id/textView2"
        android:layout_marginTop="20dp"
        android:text="TextView" />

    <TextView
        android:id="@+id/pan"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/thenumber"
        android:layout_alignBottom="@+id/thenumber"
        android:layout_toRightOf="@+id/textView1"
        android:text="TextView" />

</RelativeLayout>

package com.example.calculator;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.RadioGroup.OnCheckedChangeListener;
 
public class ChoiceSet extends Activity {
    private TextView number;
    private int i=0,g;
    private Button xunlian;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_choice_set);
        number=(TextView)findViewById(R.id.number1);
        xunlian=(Button)findViewById(R.id.xunlian);
        
        xunlian.setOnClickListener(new OnClickListener() {
             
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                
             g=Integer.valueOf(number.getText().toString());
                Intent intent=new Intent();
                Bundle bundle=new Bundle();
                bundle.putInt("shumu",g);
                intent.setClass(ChoiceSet.this,ChoiceActivity.class);
                intent.putExtras(bundle);
                startActivity(intent);
            }
        });
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.choice_set, menu);
        return true;
    }
 
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:background="@drawable/lovely1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="23dp"
        android:text="@string/title_activity_set"
        android:textSize="30sp" />

       <TextView
           android:id="@+id/textView2"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_alignParentLeft="true"
           android:layout_below="@+id/textView1"
           android:layout_marginLeft="14dp"
           android:layout_marginTop="41dp"
           android:text="@string/the_number_of_calculator"
           android:textSize="20sp" />

       <EditText
           android:id="@+id/panduannumber"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_alignBottom="@+id/textView2"
           android:layout_toRightOf="@+id/textView2"
           android:ems="10"
           android:inputType="number" />

       <Button
           android:id="@+id/panduanxunlian"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_alignParentLeft="true"
           android:layout_alignRight="@+id/panduannumber"
           android:layout_below="@+id/panduangroup"
           android:layout_marginTop="74dp"
           android:text="训练开始" />

</RelativeLayout>

package com.example.calculator;

import java.util.Random;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

import android.os.Bundle;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;
import android.widget.Toast;

public class ChoiceActivity extends Activity {

    private TextView text1,text2,text3;
    private CheckBox checkbox1,checkbox2,checkbox3,checkbox4;
    private Button btn1,btn2,caogaozhi;
    private int i,m=0;
    private int n=0;
    private final Random num1=new Random();
    private final Random num2=new Random();
    private final Random num3=new Random();
    private final Random num4=new Random();
    private final Random num5=new Random();
    private final Random r = new Random();
    private int x1;
    private int x2;
    private int x3;
    
    private char[] ch={'+','-','*','/'}; //字符数组
    private int index = r.nextInt(ch.length); //随机数，小于数组的长度数, 0~3
    private char x;
    private char d;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        ActionBar actionBar=getActionBar();
        actionBar.setDisplayShowHomeEnabled(true);
        actionBar.setDisplayHomeAsUpEnabled(true);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_choice);
        Bundle bundle=getIntent().getExtras();
        index=bundle.getInt("suanfa");
        d=ch[index];
        i=bundle.getInt("shumu");
        final String[]puanduan=new String[i];
        final String[]title1=new String[100];
        
        text1=(TextView)findViewById(R.id.textView1);
        text2=(TextView)findViewById(R.id.textView2);
        text3=(TextView)findViewById(R.id.textView3);
        
        checkbox1=(CheckBox)findViewById(R.id.checkBox1);
        checkbox2=(CheckBox)findViewById(R.id.checkBox2);
        checkbox3=(CheckBox)findViewById(R.id.checkBox3);
        checkbox4=(CheckBox)findViewById(R.id.checkBox4);
        btn1=(Button)findViewById(R.id.button1);
        btn2=(Button)findViewById(R.id.button2);
        caogaozhi=(Button)findViewById(R.id.caogaozhi3);
        
        final String a=String.valueOf(num1.nextInt(100));
        x1=Integer.valueOf(a);
        final String b=String.valueOf(num2.nextInt(100));
        x2=Integer.valueOf(b);
        final String c=String.valueOf(num3.nextInt(100));
        final String f=String.valueOf(num4.nextInt(100));
        final String z=String.valueOf(num5.nextInt(100));
        final String e=String.valueOf(d);
        
        text1.setText(a);
        text3.setText(b);
        text2.setText(e);
    
        
        checkbox1.setText(f);
        checkbox2.setText(z);
        checkbox4.setText(c);
        
        if(index==0){
            x3=x1+x2;
            final String h=String.valueOf(x3);
            checkbox3.setText(h);
        }
        if(index==1){
            x3=x1-x2;
            final String h=String.valueOf(x3);
            checkbox3.setText(h);
        }
        if(index==2){
            x3=x1*x2;
            final String h=String.valueOf(x3);
            checkbox3.setText(h);
        }
        if(index==3){
            x3=x1/x2;
            final String h=String.valueOf(x3);
            checkbox3.setText(h);
        }
        
        //"确定"按钮
        btn1.setOnClickListener(new OnClickListener() {
            
            final String h=String.valueOf(x3);
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                
                if(checkbox3.isChecked()){
                    Toast.makeText(ChoiceActivity.this, "正确", Toast.LENGTH_SHORT).show();
                    puanduan[m]="正确";
                }
                if(!(checkbox3.isChecked())){
                    Toast.makeText(ChoiceActivity.this, "错误"+h, Toast.LENGTH_SHORT).show();
                    puanduan[m]="错误";
                }
                i--;
                m++;
                if(i==0){
                    Toast.makeText(ChoiceActivity.this,"已经到了了题目个数!",Toast.LENGTH_LONG ).show();
                    
                }
                else{
                    final String a=String.valueOf(num1.nextInt(100));
                    x1=Integer.valueOf(a);
                    final String b=String.valueOf(num2.nextInt(100));
                    x2=Integer.valueOf(b);
                    final String c=String.valueOf(num3.nextInt(100));
                    final String f=String.valueOf(num4.nextInt(100));
                    final String z=String.valueOf(num5.nextInt(100));
                    final String e=String.valueOf(d);
                    
                    title1[n]=c+d+e;
                    n++;
                    
                    text1.setText(a);
                    text3.setText(b);
                    text2.setText(e);
                    
                    checkbox1.setText(f);
                    checkbox2.setText(z);
                    checkbox4.setText(c);
                    
                    if(index==0){
                        x3=x1+x2;
                        final String h=String.valueOf(x3);
                        checkbox3.setText(h);
                    }
                    if(index==1){
                        x3=x1-x2;
                        final String h=String.valueOf(x3);
                        checkbox3.setText(h);
                    }
                    if(index==2){
                        x3=x1*x2;
                        final String h=String.valueOf(x3);
                        checkbox3.setText(h);
                    }
                    if(index==3){
                        x3=x1/x2;
                        final String h=String.valueOf(x3);
                        checkbox3.setText(h);
                    }
                }
                
            }
        });
        
        btn2.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                if(i==0){
                Intent intent=new Intent();
                Bundle bundle2=new Bundle();
                bundle2.putStringArray("panduan", puanduan);
                bundle2.putStringArray("titlearry", title1);
                bundle2.putInt("number", m);
                intent.putExtras(bundle2);
                intent.setClass(ChoiceActivity.this,ChoiceResult.class);
                startActivity(intent);
                ChoiceActivity.this.finish();
                }
                else
                    Toast.makeText(ChoiceActivity.this,"不到题目个数，请继续", Toast.LENGTH_LONG).show();
            }
        });
        
        caogaozhi.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent=new Intent();
                intent.setClass(ChoiceActivity.this, HuabuActivity.class);
                startActivity(intent);
                ChoiceActivity.this.finish();
            }
        });
        
        
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.choice, menu);
        return true;
    }
    
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // TODO Auto-generated method stub
        switch (item.getItemId()) {
        case android.R.id.home:
            //创建启动MainActivity的Intent
            Intent intent=new Intent(this,MainActivity.class);
            //添加额外的Flag，将Activity栈中处于MainActivity之上的Activity弹出
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent);
            break;

        default:
            break;
        }
        return super.onOptionsItemSelected(item);
    }

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/lovely3"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".ChoiceActivity" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="100dp" />
 
    <TextView
        android:id="@+id/textView2"
        android:layout_width="30dp"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView1"
        android:layout_alignBottom="@+id/textView1"
        android:layout_toRightOf="@+id/textView1" />
 
    <TextView
        android:id="@+id/textView3"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView2"
        android:layout_alignBottom="@+id/textView2"
        android:layout_toRightOf="@+id/textView2" />
 
    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView3"
        android:layout_alignBottom="@+id/textView3"
        android:layout_toRightOf="@+id/textView3"
        android:text="=" />
 
    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/checkBox1"
        android:layout_alignBottom="@+id/checkBox1"
        android:layout_toLeftOf="@+id/checkBox1"
        android:text="A" />
 
    <TextView
        android:id="@+id/textView6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/checkBox2"
        android:layout_alignBottom="@+id/checkBox2"
        android:layout_alignRight="@+id/textView5"
        android:text="B" />
 
    <TextView
        android:id="@+id/textView7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/checkBox3"
        android:layout_alignBottom="@+id/checkBox3"
        android:layout_toLeftOf="@+id/checkBox3"
        android:text="C" />
 
    <TextView
        android:id="@+id/textView8"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/checkBox4"
        android:layout_alignBottom="@+id/checkBox4"
        android:layout_toLeftOf="@+id/checkBox4"
        android:text="D" />
 
    <CheckBox
        android:id="@+id/checkBox4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/checkBox3"
        android:layout_below="@+id/checkBox3" />
 
    <CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/textView4"
        android:layout_centerVertical="true" />
 
    <CheckBox
        android:id="@+id/checkBox2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/checkBox1"
        android:layout_below="@+id/checkBox1" />
 
    <CheckBox
        android:id="@+id/checkBox3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/checkBox2"
        android:layout_below="@+id/checkBox2" />

    <Button
        android:id="@+id/caogaozhi3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/button2"
        android:layout_alignBottom="@+id/button2"
        android:layout_alignParentRight="true"
        android:text="草稿纸" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/checkBox4"
        android:layout_marginTop="26dp"
        android:text="确定" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/button1"
        android:layout_alignBottom="@+id/button1"
        android:layout_toRightOf="@+id/textView8"
        android:text="打印" />
 
</RelativeLayout>

package com.example.calculator;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class ChoiceResult extends Activity{
    private TextView t1;
    private TextView t2;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_choice_result);
        t1=(TextView)findViewById(R.id.panduan12);
        t2=(TextView)findViewById(R.id.panduan13);
        Bundle bundle=getIntent().getExtras();
        int i=bundle.getInt("panduannumber");
        String []answer=bundle.getStringArray("panduanarry");
        String []title1=bundle.getStringArray("titlearry");
         String aa="";
         String aaa="";
        for(int g=0;g<i;g++){
            aa+=title1[g]+"\n";
            aaa+=answer[g]+"\n";
            t1.setText(aa);
            t2.setText(aaa);;
        }
    }

    @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;
    }

}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/lovely2"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="14dp"
        android:text="@string/result" 
        android:textSize="30sp"/>

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/textView2"
        android:layout_toRightOf="@+id/textView1"
        android:text="@string/panduan"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="14dp"
        android:layout_toLeftOf="@+id/textView1"
        android:text="@string/number"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/thenumber"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView2"
        android:layout_below="@+id/textView2"
        android:layout_marginTop="20dp"
        android:text="TextView" />

    <TextView
        android:id="@+id/pan"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/thenumber"
        android:layout_alignBottom="@+id/thenumber"
        android:layout_toRightOf="@+id/textView1"
        android:text="TextView" />

</RelativeLayout>

package com.example.calculator;

import java.util.Random;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;

public class panduanActivity extends Activity{
    private Button next1;
    private Button result1;
    private Button caogaozhi;
    private RadioGroup panduan;
    private int []number12=new int[]{0,1};
    private RadioButton m;
    private TextView timu1;
    private int index,i;
    private int k,j,l,sum,wrong,right,sign=0,label=0,n=0;
    private char a;
    private final Random num1=new Random();
    private final Random num2=new Random();
    private final Random r = new Random();
    private char[] ch = {'+','-','*','/'};
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_panduan);
        panduan=(RadioGroup)findViewById(R.id.group2);
        next1=(Button)findViewById(R.id.next1);
        result1=(Button)findViewById(R.id.result1);
        timu1=(TextView)findViewById(R.id.timu1);
        caogaozhi=(Button)findViewById(R.id.caogaozhi2);
        Bundle bundle=getIntent().getExtras();
        index=bundle.getInt("panduansuanfa");
        a=ch[index];
        i=bundle.getInt("panduanshumu");
        final String[] title1=new String[100];
        final String []answer=new String[i];
        String c=String.valueOf(num1.nextInt(100));
        String b=String.valueOf(num2.nextInt(100));
        String g=String.valueOf(r.nextInt(3));
        k=Integer.valueOf(g);
        l=Integer.valueOf(c);
        j=Integer.valueOf(b);
        String d=String.valueOf(a);    
        switch(index){
        case 0:
            sum=l+j;
            break;
        case 1:
            sum=l-j;
            break;
        case 2:
            sum=l*j;
            break;
        case 4:
            sum=l/j;
            break;
        }
        switch(k){
        case 0:
            timu1.setText(c+d+b+"="+String.valueOf(sum));
            title1[n]=c+d+b+"="+String.valueOf(sum);
            n++;
            right=0;
            break;
        case 1:
            timu1.setText(c+d+b+"="+String.valueOf(sum+1));
            title1[n]=c+d+b+"="+String.valueOf(sum+1);
            n++;
            right=1;
            break;
        case 2:
            timu1.setText(c+d+b+"="+String.valueOf(sum+2));
            title1[n]=c+d+b+"="+String.valueOf(sum+2);
            n++;
            right=1;
            break;
            default:
                break;
        }
        panduan.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            
            @Override
            public void onCheckedChanged(RadioGroup arg0, int arg1) {
                // TODO Auto-generated method stub
                m=(RadioButton)findViewById(arg1);
            }
        });
        next1.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                for (int g=0; g<2;g++){
                       RadioButton m=(RadioButton)panduan.getChildAt(g);
                        if(m.isChecked()){
                         sign=number12[g];
                         break;
                        }
                }
                if(i!=0){
            if(sign==right){
                Toast.makeText(panduanActivity.this, "选择正确", Toast.LENGTH_LONG).show();
                answer[label]="right";
            }
            if(sign!=right){
                Toast.makeText(panduanActivity.this, "选择错误", Toast.LENGTH_LONG).show();
                answer[label]="wrong";
            }
            i--;
            label++;
            String c=String.valueOf(num1.nextInt(100));
            String b=String.valueOf(num2.nextInt(100));
            String g=String.valueOf(r.nextInt(3));
            k=Integer.valueOf(g);
            l=Integer.valueOf(c);
            j=Integer.valueOf(b);
            String d=String.valueOf(a);    
            switch(index){
            case 0:
                sum=l+j;
                break;
            case 1:
                sum=l-j;
                break;
            case 2:
                sum=l*j;
                break;
            case 4:
                sum=l/j;
                break;
            }
            switch(k){
            case 0:
                timu1.setText(c+d+b+"="+String.valueOf(sum));
                title1[n]=c+d+b+"="+String.valueOf(sum);
                n++;
                right=0;
                break;
            case 1:
                timu1.setText(c+d+b+"="+String.valueOf(sum+1));
                title1[n]=c+d+b+"="+String.valueOf(sum+1);
                n++;
                right=1;
                break;
            case 2:
                timu1.setText(c+d+b+"="+String.valueOf(sum+2));
                title1[n]=c+d+b+"="+String.valueOf(sum+2);
                n++;
                right=1;
                break;
                default:
                    break;
            }
            panduan.setOnCheckedChangeListener(new OnCheckedChangeListener() {
                
                @Override
                public void onCheckedChanged(RadioGroup arg0, int arg1) {
                    // TODO Auto-generated method stub
                    m=(RadioButton)findViewById(arg1);
                }
            });
                }
                else
                {
                Toast.makeText(panduanActivity.this,"题目已做完", Toast.LENGTH_LONG).show();
                timu1.setText(null);
                }
            }
        });
        result1.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
            if(i!=0)
                Toast.makeText(panduanActivity.this, "题目没有做完，请继续完成", Toast.LENGTH_LONG).show();
            else{
                Intent intent=new Intent();
                Bundle bundle2=new Bundle();
                intent.setClass(panduanActivity.this,panduanresult.class);
                bundle2.putInt("panduannumber", label);
                bundle2.putStringArray("panduanarry", answer);
                bundle2.putStringArray("titlearry", title1);
                intent.putExtras(bundle2);
                startActivity(intent);
            }
                
            }
        });
        caogaozhi.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent=new Intent();
                intent.setClass(panduanActivity.this, HuabuActivity.class);
                startActivity(intent);
                panduanActivity.this.finish();
            }
        });
    }

    @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;
    }


}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/lovely3"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/timu1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView1"
        android:layout_alignBottom="@+id/textView1"
        android:layout_marginLeft="17dp"
        android:layout_toRightOf="@+id/textView1"
        android:text="TextView" 
        android:textSize="20sp"/>

      <TextView
          android:id="@+id/textView1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignParentTop="true"
          android:layout_marginTop="60dp"
          android:text="题目:"
          android:textSize="20sp" />

      <RadioGroup
          android:id="@+id/group2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/timu1"
          android:layout_marginTop="38dp"
          android:orientation="vertical" >

          <RadioButton
              android:id="@+id/radio0"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:checked="true"
              android:text="@string/right"
              android:textSize="20sp" />

          <RadioButton
              android:id="@+id/radio1"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_alignLeft="@+id/radio0"
              android:layout_below="@+id/radio0"
              android:text="@string/wrong"
              android:textSize="20sp" />
      </RadioGroup>

      <Button
          android:id="@+id/caogaozhi2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_above="@+id/result1"
          android:layout_alignParentLeft="true"
          android:layout_alignParentRight="true"
          android:text="草稿纸" />

      <Button
          android:id="@+id/next1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentBottom="true"
          android:layout_alignParentLeft="true"
          android:layout_alignParentRight="true"
          android:layout_marginBottom="51dp"
          android:text="下一题" />

      <Button
          android:id="@+id/result1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_above="@+id/next1"
          android:layout_alignParentLeft="true"
          android:layout_alignParentRight="true"
          android:text="结果输出" />

</RelativeLayout>

package com.example.calculator;
import com.example.calculator.R;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;


public class panduanset extends Activity {
    private TextView panduannumber;
    private RadioGroup panduanRG;
    private int i,g;
    private Button panduanxunlian;
    private int []number12=new int[]{0,1,2,3};
    private RadioButton r;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_panduan_set);
        panduannumber=(TextView)findViewById(R.id.panduannumber);
        panduanRG=(RadioGroup)findViewById(R.id.panduangroup);
        panduanxunlian=(Button)findViewById(R.id.panduanxunlian);
        panduanRG.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            
            @Override
            public void onCheckedChanged(RadioGroup arg0, int arg1) {
                // TODO Auto-generated method stub
                r=(RadioButton)findViewById(arg1);
            }
        });
        panduanxunlian.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                for (int g=0; g<4;g++){
                       RadioButton r=(RadioButton)panduanRG.getChildAt(g);
                        if(r.isChecked()){
                         i=number12[g];
                         break;
                        }
                }
                g=Integer.valueOf(panduannumber.getText().toString());
                Intent intent=new Intent();
                Bundle bundle=new Bundle();
                bundle.putInt("panduansuanfa", i);
                bundle.putInt("panduanshumu",g);
                intent.setClass(panduanset.this,panduanActivity.class);
                intent.putExtras(bundle);
                startActivity(intent);
            }
        });
    }

    @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;
    }

}

package com.example.calculator;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class panduanresult extends Activity{
    private TextView t1;
    private TextView t2;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_panduan_result);
        t1=(TextView)findViewById(R.id.panduan12);
        t2=(TextView)findViewById(R.id.panduan13);
        Bundle bundle=getIntent().getExtras();
        int i=bundle.getInt("panduannumber");
        String []answer=bundle.getStringArray("panduanarry");
        String []title1=bundle.getStringArray("titlearry");
         String aa="";
         String aaa="";
        for(int g=0;g<i;g++){
            aa+=title1[g]+"\n";
            aaa+=answer[g]+"\n";
            t1.setText(aa);
            t2.setText(aaa);;
        }
    }

    @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;
    }

}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/lovely2"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="16dp"
        android:text="@string/result"
        android:textSize="30sp" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="16dp"
        android:layout_toLeftOf="@+id/textView1"
        android:text="@string/number" 
        android:textSize="20sp"/>

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView2"
        android:layout_alignBottom="@+id/textView2"
        android:layout_toRightOf="@+id/textView1"
        android:text="@string/panduan"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/panduan12"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView2"
        android:layout_below="@+id/textView2"
        android:layout_marginTop="16dp"
        android:text="TextView" />

    <TextView
        android:id="@+id/panduan13"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/panduan12"
        android:layout_alignBottom="@+id/panduan12"
        android:layout_toRightOf="@+id/textView1"
        android:text="TextView" />

</RelativeLayout>

package com.example.calculator;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Bundle;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class HuabuActivity extends Activity{
    private SurfaceView mSurfaceView;
    private SurfaceHolder mSurfaceHolder;
    private Button b1;
    private Button b2;
    private float oldX=0f;
    private float oldY=0f;
    private boolean canDraw=false;
    private Paint mpaint;
    private int whichColor=0;
    private Dialog mdialog;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_huabu);
        mSurfaceView=(SurfaceView)findViewById(R.id.surfaceView1);
        mSurfaceHolder=mSurfaceView.getHolder();
        mpaint=new Paint();
        mpaint.setColor(Color.RED);
        mpaint.setStrokeWidth(2.0f);
        b1=(Button)findViewById(R.id.clear);
        b2=(Button)findViewById(R.id.color);
        b1.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Canvas mCanvas=mSurfaceHolder.lockCanvas();
                mCanvas.drawColor(Color.BLACK);
                mSurfaceHolder.unlockCanvasAndPost(mCanvas);
                mSurfaceHolder.lockCanvas(new Rect(0,0,0,0));
                mSurfaceHolder.unlockCanvasAndPost(mCanvas);
            }
        });
        b2.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
              Dialog mdialog=new AlertDialog.Builder(HuabuActivity.this).setTitle("颜色设置").setSingleChoiceItems(new String[]{"红色","绿色","蓝色"}, whichColor,new DialogInterface.OnClickListener() {
                
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    switch(which){
                    case 0:
                    {
                        mpaint.setColor(Color.RED);
                        whichColor=0;
                        break;
                    }
                    case 1:
                    {
                        mpaint.setColor(Color.GREEN);
                        whichColor=1;
                        break;
                    }
                    case 2:
                    {
                        mpaint.setColor(Color.BLUE);
                        whichColor=2;
                        break;
                    }
                    }
                }
            }).setPositiveButton("确定",new DialogInterface.OnClickListener() {
                
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    dialog.dismiss();
                }
            }).create();
              mdialog.show();
            }
        });
    }
public boolean onTouchEvent(MotionEvent event){
    float x=event.getX();
    float y=event.getY()-50;
    if(canDraw){
        switch(event.getAction())
        {
        case MotionEvent.ACTION_MOVE:
        {
            Canvas mCanvas=mSurfaceHolder.lockCanvas();
            mCanvas.drawLine(x, y, oldX, oldY, mpaint);
            mSurfaceHolder.unlockCanvasAndPost(mCanvas);
            mSurfaceHolder.lockCanvas(new Rect(0,0,0,0));
            mSurfaceHolder.unlockCanvasAndPost(mCanvas);
            break;
        }    
       }
    }
    oldX=x;
    oldY=y;
    canDraw=true;
    return true;
    
}
    @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;
    }


}

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/AbsoluteLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <SurfaceView
        android:id="@+id/surfaceView1"
        android:layout_width="match_parent"
        android:layout_height="396dp" />

    <Button
        android:id="@+id/clear"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_x="3dp"
        android:layout_y="411dp"
        android:text="清除" />

    <Button
        android:id="@+id/color"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_x="236dp"
        android:layout_y="410dp"
        android:text="颜色" />

</AbsoluteLayout>