我是新来的android.When我试图让联系人姓名及其工作正常，但我想只得到的数字，但我不能这样做。我的code为： -

 包com.example.sqllitecontactlist;
进口android.app.Activity;
进口android.database.Cursor;
进口android.os.Bundle;
进口android.provider.ContactsContract;
进口android.view.View;
进口android.widget.AdapterView;
进口android.widget.ListView;
进口android.widget.SimpleCursorAdapter;
进口android.widget.TextView;
进口android.widget.AdapterView.OnItemClickListener;

公共类PhoneBookActivity延伸活动{

// Android的列表视图对象
ListView控件listViewPhoneBook;
@覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
  的setContentView（R.layout.phone_book）;

   //从XML文件中的ListView参考
  listViewPhoneBook =（ListView控件）findViewById（R.id.listPhoneBook）;
  的String [] arrayColumns =新的String [] {ContactsContract.CommonDataKinds.Phone.NUMBER};

    // arrayViewID认为的id将映射到只有在这里textViewPhone
  INT [] arrayViewID =新INT [] {R.id.textViewNumber};

 光标光标= getContentResolver（）查询（ContactsContract.Contacts.CONTENT_URI，arrayColumns，NULL，NULL，NULL）;

SimpleCursorAdapter适配器=新SimpleCursorAdapter（这一点，R.layout.each_contact，光标，arrayColumns，arrayViewID）;
 listViewPhoneBook.setAdapter（适配器）; }}
 

当我执行这个它说：java.lang.IllegalArgumentException：如果无效的列数据1。我用Google搜索了很多，并应用了一些解决方案，但失败了。请帮我出

  getNumber（this.getContentResolver（））;


公共无效getNumber（ContentResolver的CR）
{
    光标手机= cr.query（ContactsContract.CommonDataKinds.Phone.CONTENT_URI，NULL，NULL，NULL，NULL）;
            //使用光标来访问触点
    而（phones.moveToNext（））
    {
      字符串名称= phones.getString（phones.getColumnIndex（ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME））;
             //获取显示名称
      phoneNumber的= phones.getString（phones.getColumnIndex（ContactsContract.CommonDataKinds.Phone.NUMBER））;
              //获取电话号码
      的System.out.println（..................+ phoneNumber的）;
    }

}
 

activity_main.xml

 ＆LT; RelativeLayout的的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
 的xmlns：工具=htt​​p://schemas.android.com/tool​​s
 机器人：layout_width =match_parent
 机器人：layout_height =match_parent
 工具：上下文=MainActivity。＆GT;

＆LT;的ListView
   机器人：layout_width =match_parent
   机器人：layout_height =FILL_PARENT
   机器人：ID =@ + ID / LV/＆GT;

＆LT; / RelativeLayout的＆GT;
 

MainActivity.java

 公共类MainActivity延伸活动{

     字符串phoneNumber的;
     ListView的LV;
     ArrayList的＆LT;字符串＆GT; AA =新的ArrayList＆LT;字符串＆GT;（）;
    @覆盖
    保护无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;

        的setContentView（R.layout.activity_main）;
         LV =（ListView控件）findViewById（R.id.lv）;

        getNumber（this.getContentResolver（））;
    }

    公共无效getNumber（ContentResolver的CR）
    {
        光标手机= cr.query（ContactsContract.CommonDataKinds.Phone.CONTENT_URI，NULL，NULL，NULL，NULL）;
        而（phones.moveToNext（））
        {
          字符串名称= phones.getString（phones.getColumnIndex（ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME））;
          phoneNumber的= phones.getString（phones.getColumnIndex（ContactsContract.CommonDataKinds.Phone.NUMBER））;
          的System.out.println（..................+ phoneNumber的）;
          aa.add（phoneNumber的）;
        }
                 phones.close（）//关闭游标
          ArrayAdapter＆LT;字符串＆GT;适配器=新的ArrayAdapter＆LT;字符串＆GT;（这一点，
                    android.R.layout.simple_list_item_1，AA）;
          lv.setAdapter（适配器）;
                  在列表//显示联系人号码
    }
      }
 

快照

请确保您有这方面的清单

 ＆LT;使用-权限的Andr​​oid：名称=android.permission.READ_CONTACTS/＆GT;
 

I am new to android.When i try to get contact names its working fine but i want to get numbers only, but i am not able to do so. My code is:-

package com.example.sqllitecontactlist;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

public class PhoneBookActivity extends Activity {

//Android listview object
ListView listViewPhoneBook;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
  setContentView(R.layout.phone_book);

   //get the ListView Reference from xml file
  listViewPhoneBook=(ListView)findViewById(R.id.listPhoneBook);
  String[] arrayColumns = new String[]{ ContactsContract.CommonDataKinds.Phone.NUMBER};

    // arrayViewID is the id of the view it will map to here textViewPhone only 
  int[] arrayViewID = new int[]{R.id.textViewNumber};

 Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,        arrayColumns, null, null, null);

SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.each_contact,    cursor, arrayColumns, arrayViewID);
 listViewPhoneBook.setAdapter(adapter); }}

When i execute this it says "java.lang.IllegalArgumentException: Invalid column data1". i have googled it a lot and applied some solution but failed. Please help me out

    getNumber(this.getContentResolver()); 


public void getNumber(ContentResolver cr)
{
    Cursor phones = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, null);
            // use the cursor to access the contacts    
    while (phones.moveToNext())
    {
      String name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
             // get display name
      phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
              // get phone number
      System.out.println(".................."+phoneNumber); 
    }

}

activity_main.xml

 <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"
 tools:context=".MainActivity" >

<ListView
   android:layout_width="match_parent"
   android:layout_height="fill_parent"
   android:id="@+id/lv"/>

</RelativeLayout>

MainActivity.java

 public class MainActivity extends Activity {

     String phoneNumber;
     ListView lv;
     ArrayList <String> aa= new ArrayList<String>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);
         lv= (ListView) findViewById(R.id.lv);

        getNumber(this.getContentResolver()); 
    }

    public void getNumber(ContentResolver cr)
    {
        Cursor phones = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, null);
        while (phones.moveToNext())
        {
          String name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
          phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
          System.out.println(".................."+phoneNumber); 
          aa.add(phoneNumber);
        }
                 phones.close()// close cursor
          ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                    android.R.layout.simple_list_item_1,aa);
          lv.setAdapter(adapter);
                  //display contact numbers in the list
    }
      }

snap shot

Make sure you have this in manifest

       <uses-permission android:name="android.permission.READ_CONTACTS"/>