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;

     }

 }

MainActivity.java

 <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>

activity_main.xml

 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;

     }

 }

CalculatorSet.java

 <?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>

activity_calculator_set.xml

 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;

     }

 }

CalculatorActivity.java

 <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>

activity_calculator.xml

 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;

     }

 }

resultActivity.java

 <?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>

activity_result.xml

 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;

     }

 }

ChoiceSet.java

 <?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>

activity_choice_set.xml

 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);

     }

 }

ChoiceActivity.java

 <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>

activity_choice.xml

 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;

     }

 }

ChoiceResult.java

 <?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>

activity_choice_result.xml

 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;

     }

 }

panduanActivity.java

 <?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>

activity_panduan.xml

 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;

     }

 }

panduanset.java

activity_panduan_set.xml

 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;

     }

 }

panduanresult.java

 <?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>

activity_panduan_result.xml

 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;

     }

 }

HuabuActivity.java

 <?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>

activity_huabu.xml

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