android:获取手机号码和姓名实现通讯录

首先是运行结果

由于通讯录在手机里是以数据库贮存的 所以我们可以通过一个方法

context.getContentResolver().query(Phone.CONTENT_URI,
                null ,  null ,  null ,  null );

来获得通讯录 ,这个方法返回一个游标的数据类型，通过moveToNext()方法来获取所有的手机号码信息

当然读取手机通讯录需要权限 在adnroidManifest文件中声明即可 

由于我也实现了打电话的功能 所以也要声明权限

"android.permission.READ_CONTACTS" />
    "android.permission.CALL_PHONE" />

布局文件

activity_main.xml

"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:id= "@+id/listView1"
        android:layout_width= "match_parent"
        android:layout_height= "wrap_content" >

listview的布局文件：item.xml，在这里我设置的头像为默认的 当然也可以在手机数据库中读取联系人的icon 

"1.0" encoding= "utf-8" ?>
"http://schemas.android.com/apk/res/android"
    android:layout_width= "match_parent"
    android:layout_height= "match_parent" >


        android:id= "@+id/image"
        android:layout_width= "60dp"
        android:layout_height= "60dp"
        android:padding= "10dp"
        android:src= "@drawable/ic_launcher" />


        android:id= "@+id/name"
        android:paddingTop= "10dp"
        android:layout_width= "fill_parent"
        android:layout_height= "wrap_content"
        android:layout_toRightOf= "@id/image"
        android:text= "name" />


        android:id= "@+id/number"
        android:paddingTop= "5dp"
        android:layout_width= "fill_parent"
        android:layout_height= "wrap_content"
        android:layout_below= "@id/name"
        android:layout_toRightOf= "@id/image"
        android:text= "number" />

自己封装一个联系人信息的类 有两个变量

package com.example.getphonenumber;

public class PhoneInfo {
    private String name;
    private String number;
    public PhoneInfo(String name, String number) {
        this .name = name;
        this .number = number;
    }
    public String getName() {
        return name;
    }
    public String getNumber() {
        return number;
    }
}

读取手机数据库中的通讯录

GetPhoneNumberFromMobile.class

package com.example.getphonenumber;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.provider.ContactsContract.CommonDataKinds.Phone;

public class GetPhoneNumberFromMobile {
    private List list;

    public List getPhoneNumberFromMobile(Context context) {
        // TODO Auto-generated constructor stub
        list =  new ArrayList();
        Cursor cursor = context.getContentResolver().query(Phone.CONTENT_URI,
                null ,  null ,  null ,  null );
        //moveToNext方法返回的是一个boolean类型的数据
        while (cursor.moveToNext()) {
            //读取通讯录的姓名
            String name = cursor.getString(cursor
                    .getColumnIndex(Phone.DISPLAY_NAME));
            //读取通讯录的号码
            String number = cursor.getString(cursor
                    .getColumnIndex(Phone.NUMBER));
            PhoneInfo phoneInfo =  new PhoneInfo(name, number);
            list.add(phoneInfo);
        }
        return list;
    }
}

自定义adapter

package com.example.getphonenumber;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class MyAdapter  extends BaseAdapter{
    private List list;
    private Context context;

    public MyAdapter(List list, Context context) {
        this .list = list;
        this .context = context;
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return list.size();
    }

    @Override
    public Object getItem( int position) {
        // TODO Auto-generated method stub
        return list.get(position);
    }

    @Override
    public long getItemId( int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView( int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        if (convertView== null ){
            ViewHolder viewHolder= new ViewHolder();
            LayoutInflater inflater=LayoutInflater.from(context);
            convertView=inflater.inflate(R.layout.item,  null );
            viewHolder.name=(TextView) convertView.findViewById(R.id.name);
            viewHolder.number=(TextView) convertView.findViewById(R.id.number);
            viewHolder.name.setText(list.get(position).getName());
            viewHolder.number.setText(list.get(position).getNumber());
        }
        return convertView;
    }
    public class ViewHolder{
        TextView name;
        TextView number;
    }
}

MainActivity中listview加载适配器 并为其添加点击监听事件

package com.example.getphonenumber;

import java.util.ArrayList;
import java.util.List;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity  extends Activity  implements OnItemClickListener {
    private ListView lv;
    private MyAdapter adapter;
    private GetPhoneNumberFromMobile getPhoneNumberFromMobile;
    private List list =  new ArrayList();

    protected void onCreate(Bundle savedInstanceState) {
        super .onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        lv = (ListView) findViewById(R.id.listView1);
        getPhoneNumberFromMobile =  new GetPhoneNumberFromMobile();
        list = getPhoneNumberFromMobile.getPhoneNumberFromMobile( this );
        adapter =  new MyAdapter(list,  this );
        lv.setAdapter(adapter);
        lv.setOnItemClickListener( this );
    }

    @Override
    public void onItemClick(AdapterView parent, View view,  int position,
            long id) {
        // TODO Auto-generated method stub
        String number = list.get(position).getNumber();
        Intent intent =  new Intent();
        intent.setAction( "android.intent.action.CALL" );
        intent.addCategory(Intent.CATEGORY_DEFAULT);
        intent.setData(Uri.parse( "tel:" +number));
        startActivity(intent);
    }

}