Android实现通讯录效果――获取手机号码和姓名

首先给大家展示下运行效果图：

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

布局文件

activity_main.xml

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

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);
}
}