Contacts Provider是Android中一个强大并且灵活的组件，负责管理系统通讯录的数据，对外提供访问接口来对系统通讯录进行访问和操作。
MainActivity.class
package com.example.contactstest; import java.util.ArrayList; import java.util.List; import android.os.Bundle; import android.provider.ContactsContract; import android.widget.ArrayAdapter; import android.widget.ListView; import android.app.Activity; import android.database.Cursor; public class MainActivity extends Activity { ListView contactsView; ArrayAdapter<String> adapter; List<String> contactsList = new ArrayList<String>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); contactsView = (ListView) findViewById(R.id.contacts_view); adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, contactsList); contactsView.setAdapter(adapter); readContacts(); } private void readContacts() { Cursor cursor = null; try { cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null); while (cursor.moveToNext()) { String displayName = cursor.getString(cursor .getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)); String number = cursor.getString(cursor .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); contactsList.add(displayName + "\n" + number); } } catch (Exception e) { e.printStackTrace(); } finally { if (cursor != null) { cursor.close(); } } } }activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <ListView android:id="@+id/contacts_view" android:layout_width="match_parent" android:layout_height="match_parent" > </ListView> </LinearLayout>这个demo是来自第一行代码例子demo（获取联系人信息）
