Contacts Provider使用

前言

Contacts Provider是Android中一個強大並且靈活的組件，負責管理系統通訊錄的數據，對外提供訪問接口來對系統通訊錄進行訪問和操作。

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>

這個demo是來自第一行代碼例子demo（獲取聯繫人信息）