android 读取联系人实例

<span style="font-family: 'Microsoft YaHei'; background-color: rgb(255, 255, 255);">contentProvider的应用，读取本地联系人，（id，name,电话号码）以listView显示。</span>

<span style="font-family: 'Microsoft YaHei'; background-color: rgb(255, 255, 255);">布局很简单，一个listview.</span>

<span style="font-family: 'Microsoft YaHei'; background-color: rgb(255, 255, 255);"><span style="font-size:24px;"><strong><em><u>activity_main.xml</u></em></strong></span></span>

<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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.fxj.xml.jiexi.MainActivity" >

<ListView
android:id="@+id/listview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
></ListView>

</RelativeLayout>

<span style="font-size:18px;"><u><</u>LinearLayout 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"
android:orientation="horizontal"
android:padding="5dp"
tools:context="com.fxj.xml.jiexi.MainActivity" >

<TextView
android:id="@+id/tv_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:gravity="center"
android:layout_weight="1"
/>
<TextView
android:layout_weight="1"
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="小名"
android:gravity="center"
/>

<TextView
android:layout_weight="1"
android:id="@+id/tv_age"
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="12"
/><u>
</u>
</LinearLayout></span><u style="font-size:24px; font-weight: bold; font-style: italic;">
</u>

<span style="font-size:18px;">package comfxj.readcontacts;

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

import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.v7.app.ActionBarActivity;
import android.widget.ListView;

public class MainActivity extends ActionBarActivity {
private Uri contactUri = ContactsContract.Contacts.CONTENT_URI;
private MyAdapter adapter;
private List<Contact> contacts;
private ListView listView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listview);
getdatas();
adapter = new MyAdapter(contacts, this);
listView.setAdapter(adapter);
}

private void getdatas() {
contacts = getQueryData();

}

private List<Contact> <strong>getQueryData() </strong>{
List<Contact> contacts = new ArrayList<Contact>();

<strong>// 获取ContentResolver对象
ContentResolver resolver = getContentResolver();
Cursor cursor = resolver.query(contactUri, null, null, null, null);</strong>
// 获得_ID字段的索引
int idIndex = cursor.getColumnIndex(ContactsContract.Contacts._ID);
// 获取Name字段的索引
int nameIndex = cursor
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
// 遍历Cursor提取数据
while (cursor.moveToNext()) {
Contact contact = new Contact();
<strong>// 获取联系人id、姓名
String id = cursor.getString(idIndex);
String name = cursor.getString(nameIndex);</strong>
contact.setId(id);
contact.setName(name);
<strong>// 获取联系人的对应电话号码
String ContactId = cursor.getString(idIndex);
Cursor phone = resolver.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "="
+ ContactId, null, null);
while (phone.moveToNext()) {
String number = phone
.getString(phone
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
// 电话号码赋值
contact.setPhoneNumber(number);</strong>
}
contacts.add(contact);
}
cursor.close();
return contacts;
}
}
</span>

<span style="font-size:18px;">package comfxj.readcontacts;

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<Contact> contacts;
private Context context;
private LayoutInflater inflater;
public MyAdapter(List<Contact> contacts,Context context){
this.contacts = contacts;
this.context = context;
inflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return contacts.size();
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return contacts.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) {
if (convertView == null) {
convertView = inflater
.inflate(R.layout.item_listview, null, false);

}
TextView tvId = (TextView) convertView.findViewById(R.id.tv_id);
TextView tvName = (TextView) convertView
.findViewById(R.id.tv_name);
TextView tvNumber = (TextView) convertView
.findViewById(R.id.tv_age);

tvId.setText(contacts.get(position).getId());
tvName.setText(contacts.get(position).getName());
tvNumber.setText(contacts.get(position).getPhoneNumber());
return convertView;
}

}</span><u style="font-size:24px; font-weight: bold; font-style: italic;">
</u>

<span style="font-size:18px;">
</span>

<span style="font-size:18px;">
</span>

<span style="font-size:18px;">package comfxj.readcontacts;

public class Contact {
private String id;
private String name;
private String phoneNumber;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPhoneNumber() {
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}

}</span><u style="font-size:24px; font-weight: bold; font-style: italic;">
</u>