안드로이드 고수님들께 도움 요청합니다

지금 전화번호부를 만들고 있는데 안드로이드 기본 전화번호부에서 이름 전화번호를 읽어와서

선택된 값만 제가 만든 전화번호부 DB 에 저장하고 싶은데 안되네요 ㅠㅠ

초보라 맨땅에 헤딩하면서 여기저기 소스들 끌어와서 배우는데

왜 null pointer exception 이 일어나는지 머가 잘못된건지 통 모르겠습니다

고수님들  도와주세요 ㅠㅠ

이건 자바 파일이구요

import java.util.ArrayList;
import java.util.HashMap;

import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts;
import android.provider.Contacts.Phones;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class GetContacts extends ListActivity  {

 private ListView mListView = null;
 private PersonAdapter m_adapter = null;
 private CheckBox mAllCheckBox = null;

 //private Button mCountBt = null;
 
 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.getcontacts);
     setLayout();
     Cursor cursor = getURI();     // 전화번호부 가져오기 

  int end = cursor.getCount();    // 전화번호부의 갯수 세기
  Log.i(null, "end = "+end);
  
  ArrayList<Person> m_orders = new ArrayList<Person>();
  int count = 0;
  if(cursor.moveToFirst())
  {
   do
   {
    Person p1 = new Person(cursor.getString(1), cursor.getString(2));
    m_orders.add(p1);     

    // LogCat에 로그 남기기
    Log.i(null, "name = " + cursor.getString(1) + " number = " + cursor.getString(2));
    count++;
    
   } while(cursor.moveToNext() || count > end);
   
   PersonAdapter m_adapter = new PersonAdapter(this, R.layout.row, m_orders); // 어댑터를 생성합니다.
   //setListAdapter(m_adapter);
   mListView.setAdapter(m_adapter);
   mListView.setOnItemClickListener(mItemClickListener);

  }
 }

 // ListView 안에 Item을 클릭시에 호출되는 Listener
 private AdapterView.OnItemClickListener mItemClickListener = new
   AdapterView.OnItemClickListener() {
  @Override
  public void onItemClick(AdapterView<?> arg0, View arg1,
    int position, long arg3) {
   Toast.makeText(getApplicationContext(), ""+(position+1),
     Toast.LENGTH_SHORT).show();

   m_adapter.setChecked(position);
   // Data 변경시 호출 Adapter에 Data 변경 사실을 알려줘서 Update 함.
   m_adapter.notifyDataSetChanged();

  }
 };

 private boolean[] isCheckedConfirm;
 
 private class PersonAdapter extends ArrayAdapter<Person> {
      
  private ArrayList<Person> items;   
  public PersonAdapter(Context context, int textViewResourceId, ArrayList<Person> items) {                
   super(context, textViewResourceId, items);             
   this.items = items;      
  }
      
  @Override       
  public View getView(int position, View convertView, ViewGroup parent) {                
   View v = convertView;
   
   if (v == null) {                     
    LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);                     
    v = vi.inflate(R.layout.row, null);                 
   }
              
   Person p = items.get(position);
                
   if (p != null) {                         
    TextView tt = (TextView) v.findViewById(R.id.toptext);                      
    TextView bt = (TextView) v.findViewById(R.id.bottomtext);
                        
    if (tt != null){                             
     tt.setText(p.getName());                                                     
    }
                      
    if(bt != null){                                 
     bt.setText("전화번호: "+ p.getNumber());                        
    }     
   }               
   return v;       
  }
  
  public void setAllChecked(boolean ischeked) {
   int tempSize = isCheckedConfirm.length;
   for(int a=0 ; a<tempSize ; a++){
    isCheckedConfirm[a] = ischeked;
   }
  }
  
  public void setChecked(int position) {
   isCheckedConfirm[position] = !isCheckedConfirm[position];
  }
  
  public ArrayList<Integer> getChecked(){
   int tempSize = isCheckedConfirm.length;
   ArrayList<Integer> mArrayList = new ArrayList<Integer>();
   for(int b=0 ; b<tempSize ; b++){
    if(isCheckedConfirm[b]){
     mArrayList.add(b);
    }
   }
   return mArrayList;
  }

  @Override
  public long getItemId(int arg0) {
   return 0;
  }
 }

 private void setLayout(){
  mListView = (ListView) findViewById(android.R.id.list);
  final Button mCountBt = (Button) findViewById(R.id.bt_contacts);
  mCountBt.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    mCountBt.setText("선택한 전화번호 개수는 "+
      m_adapter.getChecked().size()+" 입니다");

    for(int i=0 ; i<m_adapter.getChecked().size() ; i++){
     Log.i(null, "선택한 전화번호 Position = " +
       m_adapter.getChecked().get(i));
    }
   }
  });

  mAllCheckBox = (CheckBox) findViewById(R.id.checkBox1);
  mAllCheckBox.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    m_adapter.setAllChecked(mAllCheckBox.isChecked());
    m_adapter.notifyDataSetChanged();
   }
  });
 }
 
 class Person {       
  private String Name;      
  private String Number;
      
  public Person(String _Name, String _Number){          
   this.Name = _Name;         
   this.Number = _Number;       
  }
      
  public String getName() {           
   return Name;       
  }
      
  public String getNumber() {        
   return Number;        
  }   
 }

 private Cursor getURI()
 {
  // 주소록 URI  
  Uri people = Contacts.Phones.CONTENT_URI;
  
  // 검색할 컬럼 정하기
  String[] projection = new String[] { Contacts.Phones._ID, Contacts.Phones.DISPLAY_NAME, Contacts.Phones.NUMBER };
  
  // 쿼리 날려서 커서 얻기
  String[] selectionArgs = null;
  String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC"; 

  return managedQuery(people, projection, null, selectionArgs, sortOrder);
 }
 
 //메뉴 설정
 public boolean onCreateOptionsMenu(Menu menu){
  menu.add(Menu.NONE, Menu.FIRST+1, Menu.NONE, "전화번호 저장");
  
  return (super.onCreateOptionsMenu(menu));
 }

 public boolean onOptionsItemSelected(MenuItem item){
  return (itemCallback(item) || super.onOptionsItemSelected(item));
 }
 
 //전화번호 등록 페이지로 이동
 private boolean itemCallback(MenuItem item){
  Intent intent = null;
  
  switch(item.getItemId()){
   case Menu.FIRST+1:
    //intent = new Intent(GetContacts.this, Register.class);
                //startActivity(intent); 
    return true;
  }  
  return false;
 }
}

이건 row.xml 파일입니다

<?xml version="1.0" encoding="utf-8"?>
<TableLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/tableLayout1"
 android:layout_width="match_parent" android:layout_height="wrap_content"> 
    <TableRow
     android:layout_height="0dp"
     android:layout_weight="1"
     android:id="@+id/tableRow1"
     android:layout_width="wrap_content">
        <CheckBox
         android:id="@+id/checkBox1"
         android:layout_width="wrap_content"
         android:layout_gravity="right"
         android:layout_height="wrap_content">
        </CheckBox>
        <LinearLayout
         android:padding="6dip"
         android:layout_width="fill_parent"
         android:weightSum="1"
         android:layout_height="wrap_content"
         android:orientation="vertical">
            <TextView
             android:textSize="20px"
             android:gravity="center_vertical"
             android:layout_width="fill_parent"
             android:id="@+id/toptext"
             android:layout_height="wrap_content">
            </TextView>
            <TextView
             android:layout_width="fill_parent"
             android:ellipsize="marquee"
             android:singleLine="true"
             android:id="@+id/bottomtext"
             android:layout_height="wrap_content">
            </TextView>
        </LinearLayout>   
    </TableRow>
    <Button android:text="Button" android:layout_height="wrap_content" android:id="@+id/bt_contacts" android:layout_width="wrap_content"></Button>
</TableLayout>