启动模拟器一直报错提示unfortunately 项目名 has stopped

package com.example.borrowbookproj;
import java.util.ArrayList;
import java.util.HashMap;
//import java.util.Iterator;
import java.util.List;
import java.util.Map;
//import java.util.Map.Entry;
import java.util.Set;
import android.support.v7.app.ActionBarActivity;
//import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
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.EditText;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
public class MainActivity extends ActionBarActivity {
 private EditText et_reader, et_borrowoutime, et_backtime;
 private RadioGroup rg_sex;
 private RadioButton rb_man, rb_woman;
 private CheckBox cb_history, cb_suspense, cb_literature;
 private SeekBar sb_age;
 private Button btn_find, btn_next;
 private TextView tv1, tv_books, tv_age, book_name, book_type, book_age;
 private int age;
 private ImageView iv_out;
 private int bookssize;
 Map<String, String> massagemap;
 List<Book> book_choice;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  //initMethod();
  tv1 = (TextView) findViewById(R.id.showmassage);
  tv1.setText("测试");
  //workMethod();
  rg_sex.clearCheck();
 }
// private void initMethod() {
//  et_reader = (EditText) findViewById(R.id.reader);
//  et_borrowoutime = (EditText) findViewById(R.id.borrowtime);
//  et_backtime = (EditText) findViewById(R.id.backtime);
//  rb_man = (RadioButton) findViewById(R.id.man);
//  rb_woman = (RadioButton) findViewById(R.id.woman);
//  cb_history = (CheckBox) findViewById(R.id.history);
//  cb_suspense = (CheckBox) findViewById(R.id.suspense);
//  cb_literature = (CheckBox) findViewById(R.id.literature);
//  sb_age = (SeekBar) findViewById(R.id.seekBarage);
//  btn_find = (Button) findViewById(R.id.findbutton);
////  btn_next = (Button) findViewById(R.id.nextbutton);
//  tv1 = (TextView) findViewById(R.id.showmassage);
//  tv_books = (TextView) findViewById(R.id.books);
//  tv_age = (TextView) findViewById(R.id.age);
//  iv_out = (ImageView) findViewById(R.id.bookimage);
//  book_name = (TextView) findViewById(R.id.bookname);
//  book_type = (TextView) findViewById(R.id.type);
//  book_age = (TextView) findViewById(R.id.applyage);
//  initData();
// }
// private void workMethod() {
//  rg_sex.setOnCheckedChangeListener(new SexRadioGroup());
//  btn_find.setOnClickListener(new myOnClickListener());
//  //btn_next.setOnClickListener(new myOnClickListener());
//  cb_history.setOnClickListener(new myOnClickListener());
//  sb_age.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
//   @Override
//   public void onStopTrackingTouch(SeekBar seekBar) {
//    // 将在结束拖拽进度条时被触发
//    Log.i("progress", "结束 " + seekBar.getProgress() + "");
//    age = seekBar.getProgress();
//    tv_age.setText("" + age);
//   }
//
//   @Override
//   public void onStartTrackingTouch(SeekBar seekBar) {
//   }
//
//   @Override
//   public void onProgressChanged(SeekBar seekBar, int progress,
//     boolean fromUser) {
//   }
//  });
// }
// class SexRadioGroup implements OnCheckedChangeListener {
//
//  @Override
//  public void onCheckedChanged(RadioGroup arg0, int arg1) {
//   String str = null;
//   switch (arg1) {
//   case R.id.man:
//    str = rb_man.getText().toString();
//    break;
//   case R.id.woman:
//    str = rb_woman.getText().toString();
//    break;
//   }
//   massagemap.put("性别", str);
//  }
//
// }
//
// class myOnClickListener implements OnClickListener {
//
//  @Override
//  public void onClick(View arg0) {
//
//   switch (arg0.getId()) {
//   case R.id.findbutton:
//    addAllMassage();
//    // Toast.makeText(MainActivity.this, str.toString(),
//    // 5000).show();
//    break;
//   // case R.id.nextbutton:
//   // if ((bookssize + 1) > book_choice.size())
//   // bookssize = 0;
//   // iv_out.setImageResource(book_choice.get(bookssize).getImage());
//   // bookname.setText(book_choice.get(bookssize).getBookname());
//   // booktype.setText(book_choice.get(bookssize).getBooktype());
//   // bookage.setText(book_choice.get(bookssize).getBookage());
//   // bookssize++;
//   // break;
//
//   }
//
//  }
//
// }
//
// private void addAllMassage() {
//  List<String> str_allmassage = new ArrayList<String>();
//  List<String> lists = new ArrayList<String>();
//  massagemap.put("读者", et_reader.getText().toString());
//  massagemap.put("借出时间", et_borrowoutime.getText().toString());
//  if (cb_history.isChecked())
//   lists.add(cb_history.getText().toString());
//  if (cb_suspense.isChecked())
//   lists.add(cb_suspense.getText().toString());
//  if (cb_literature.isChecked())
//   lists.add(cb_literature.getText().toString());
//  massagemap.put("爱好", lists.toString());
//  Set<String> keys = massagemap.keySet();
//  for (String key : keys) {
//   str_allmassage.add(key + ":" + massagemap.get(key));
//  }
//  tv1.setText(str_allmassage.toString());
//  // for (Book b : book_choice) {
//  // if (b.getBookage() > age) {
//  // book_choice.remove(b);
//  // }
//  // }
//
// }
//
// private void initData() {
//  massagemap = new HashMap<String, String>();
//  book_choice = new ArrayList<Book>();
//  bookssize = 0;
//  book_choice.add(new Book(R.drawable.aa, "人生感悟", "郑志国", 20));
//  book_choice.add(new Book(R.drawable.bb, "边城", "沈从文", 12));
//  book_choice.add(new Book(R.drawable.cc, "Sapir", "PROFESSIONAL", 12));
//  book_choice.add(new Book(R.drawable.dd, "光辉岁月", "看不清", 50));
//  book_choice.add(new Book(R.drawable.ee, "边城", "沈从文", 6));
//  book_choice.add(new Book(R.drawable.f, "无", "无", 99));
//  book_choice.add(new Book(R.drawable.ff, "中国古代文学", "赵东栓  刘富伟", 16));
//  book_choice.add(new Book(R.drawable.gg, "无花果", "张婉丽", 16));
//  book_choice.add(new Book(R.drawable.hh, "古镇记忆", "南方", 16));
// }
}

package com.example.borrowbookproj;
import android.graphics.drawable.Drawable;
public class Book {
 private int image,bookage;
 private String bookname,booktype;
 private String[] aaa;
 public Book(int image, String bookname, String booktype, int bookage) {
  super();
  this.image = image;
  this.bookname = bookname;
  this.booktype = booktype;
  this.bookage = bookage;
 }
 public int getImage() {
  return image;
 }
 public void setImage(int image) {
  this.image = image;
 }
 public String getBookname() {
  return bookname;
 }
 public void setBookname(String bookname) {
  this.bookname = bookname;
 }
 public String getBooktype() {
  return booktype;
 }
 public void setBooktype(String booktype) {
  this.booktype = booktype;
 }
 public int getBookage() {
  return bookage;
 }
 public void setBookage(int bookage) {
  this.bookage = bookage;
 }
 
 
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.borrowbookproj"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
         <activity
            android:name=".Book"
            android:label="@string/app_name" >
        </activity>
    </application>
</manifest>

<LinearLayout 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="#FFE1FF"
    android:orientation="vertical" >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/borrowbook"
        android:textColor="#EEAEEE"
        android:textSize="20dp" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/reader" />
        <EditText
            android:id="@+id/reader"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:inputType="text" />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/sex" />
        <RadioGroup
            android:id="@+id/sex"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
            <RadioButton
                android:id="@+id/man"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/man" />
            <RadioButton
                android:id="@+id/woman"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/woman" />
        </RadioGroup>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/borrowouttime" />
        <EditText
            android:id="@+id/borrowtime"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:inputType="date" />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/backtime" />
        <EditText
            android:id="@+id/backtime"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@null"
            android:inputType="date"
            android:text="2019-01-06"
            android:textSize="15dp" />
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/hobby" />
        <CheckBox
            android:id="@+id/history"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/history" />
        <CheckBox
            android:id="@+id/suspense"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/suspense" />
        <CheckBox
            android:id="@+id/literature"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/literature" />
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:orientation="horizontal" >
        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/age" />
        <TextView
            android:id="@+id/age"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="right"
            android:text="18" />
        <SeekBar
            android:id="@+id/seekBarage"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="2"
            android:max="100"
            android:progress="18" />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="left"
            android:text="100" />
    </LinearLayout>
    <LinearLayout
        android:layout_width="300dp"
        android:layout_height="100dp"
        android:layout_gravity="center"
        android:orientation="horizontal" >
        <LinearLayout
            android:layout_width="200dp"
            android:layout_height="100dp"
            android:orientation="vertical" >
            <ImageView
                android:id="@+id/bookimage"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/aa" />
        </LinearLayout>
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:orientation="vertical" >
            <TextView
                android:id="@+id/bookname"
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1"
                android:text="@string/bookname" />
            <TextView
                android:id="@+id/type"
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1"
                android:text="@string/type" />
            <TextView
                android:id="@+id/applyage"
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1"
                android:text="@string/applyage" />
        </LinearLayout>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >
        <Button
            android:id="@+id/findbutton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="#A066D3"
            android:text="@string/findbutton" />
        <TextView
            android:id="@+id/books"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="left"
            android:text="符合条件的书有3本" />
        <Button
            android:id="@+id/nextbutton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginRight="50dp"
            android:layout_weight="1"
            android:background="#A066D3"
            android:text="@string/nextbutton" />
        <TextView
            android:id="@+id/n"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="left"
            android:text="" />
    </LinearLayout>
    <TextView
        android:id="@+id/showmassage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

机器执行后以下为log日志，加粗的为红色

01-09 03:55:00.722: I/Process(885): Sending signal. PID: 885 SIG: 9
01-09 03:55:07.152: D/dalvikvm(1089): GC_FOR_ALLOC freed 75K, 5% free 3176K/3324K, paused 24ms, total 26ms
01-09 03:55:07.172: I/dalvikvm-heap(1089): Grow heap (frag case) to 5.925MB for 2889448-byte allocation
01-09 03:55:07.202: D/dalvikvm(1089): GC_FOR_ALLOC freed 9K, 3% free 5989K/6148K, paused 29ms, total 29ms
01-09 03:55:07.342: D/AndroidRuntime(1089): Shutting down VM
01-09 03:55:07.342: W/dalvikvm(1089): threadid=1: thread exiting with uncaught exception (group=0xb3a65ba8)
01-09 03:55:07.362: E/AndroidRuntime(1089): FATAL EXCEPTION: main
01-09 03:55:07.362: E/AndroidRuntime(1089): Process: com.example.borrowbookproj, PID: 1089
01-09 03:55:07.362: E/AndroidRuntime(1089):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at android.app.ActivityThread.access$800(ActivityThread.java:135)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at android.os.Handler.dispatchMessage(Handler.java:102)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at android.os.Looper.loop(Looper.java:136)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at android.app.ActivityThread.main(ActivityThread.java:5017)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at java.lang.reflect.Method.invokeNative(Native Method)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at java.lang.reflect.Method.invoke(Method.java:515)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
01-09 03:55:07.362: E/AndroidRuntime(1089):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)

01-09 03:55:07.362: E/AndroidRuntime(1089):  at dalvik.system.NativeStart.main(Native Method)