在微信中，手机QQ中你会发现软件读取手机通讯录这个功能，这个功能使得软件更好的与手机联系人绑定，从而达到分享，拨打电话，读取用户信息等操作。下面我们将通过一个demo实现这个功能
-----------------------------------------------------------【正题部分】-----------------------------------------------
【开发环境】Android Stdio 1.1.0
【分析】
【编码】
（1）布局方面的代码小编不予细解，具体看文章下面的demo
（2）联系人信息实体类
package cn.edu.bzu.contacts_listview; /**
* Created by monster on 2015/4/26.
* 联系人实体类
* 功能：实现了People联系人实体类
*/
public class myFile {
public String PeopleName;
public int ImgId;
public String PeopleNumber; public myFile(String peopleName, int imgId, String peopleNumber) {
super();
PeopleName = peopleName;
ImgId = imgId;
PeopleNumber = peopleNumber;
} public myFile() {
super();
}
}
（3）联系人列表的适配器
/**
* Created by monster on 2015/4/26.
*/
public class PeopleListAdapter extends CursorAdapter {
private LayoutInflater mInflater;//定义LayoutInflater对象
public PeopleListAdapter(Context context, Cursor c) {
super(context, c);
mInflater=LayoutInflater.from(context);
} @Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
//初始化每一个item的View
return mInflater.inflate(R.layout.activity_list_item,parent,false);
} @Override
public void bindView(View view, Context context, Cursor cursor) {
//设置Item的布局效果
ViewHolder viewHolder=new ViewHolder();
viewHolder.PeopleImage=(ImageView)view.findViewById(R.id.IvNews);
viewHolder.PeopleName=(TextView)view.findViewById(R.id.TvNewsTitle);
viewHolder.PeopleNumber=(TextView)view.findViewById(R.id.TvNewsInfo);
//从手机联系人中读取数据
viewHolder.PeopleImage.setBackgroundResource(R.mipmap.ic_launcher);
viewHolder.PeopleName.setText(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)));
viewHolder.PeopleNumber.setText(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));
}
class ViewHolder{
ImageView PeopleImage;
TextView PeopleName;
TextView PeopleNumber;
}
}
（4）书写MainActivity.java
package cn.edu.bzu.contacts_listview; import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.widget.ListView; public class MainActivity extends Activity {
private ListView Lv;
private PeopleListAdapter adapter;
private Cursor cursor;//定义用来存储需要显示的对象的cursor
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findView();//控件实例化
setData();//设置数据
setLv();//绑定适配器
} private void setLv() {
adapter=new PeopleListAdapter(MainActivity.this,cursor);
Lv.setAdapter(adapter);
} private void setData() {
//通过getContentResolver获取手机中联系人信息
cursor=getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,null,null,null); } private void findView() {
Lv=(ListView)findViewById(R.id.LV);
} }
（5）在清单文件中设置权限
<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>
----------------------------------------------------【总结部分】------------------------------------------------------
【总结】
适配器中继承的是CursorAdapter适配器：必须实现的三个方法为:
public PeopleListAdapter(Context context, Cursor c)
public View newView(Context context, Cursor cursor, ViewGroup parent) --->>初始化每一个item的View
public void bindView(View view, Context context, Cursor cursor) ---->>设置Item的布局效果
(读取手机联系人的数据)
cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)) --->>读取联系人姓名的代码
cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)) --->>读取联系人号码的代码
【附录】