package com.itheima.displaycontact;



import android.app.Activity;

import android.content.ContentResolver;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.view.View;



public class MainActivity extends Activity {



	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

	}



	public void displayContacts(View v){

		

		// 读取 联系人的信息:  raw_contact , data

		// provider的 authorities: com.android.contacts

		

		// 暗号 :raw_contacts

		// 暗号 : data

		

		

		Uri contact_uri = Uri.parse("content://com.android.contacts/raw_contacts");

		Uri data_uri    = Uri.parse("content://com.android.contacts/data");

		

		// 获得与 后门程序打交道的 Resolver对象

		ContentResolver resolver = getContentResolver();

		

		// select contact_id from raw_contact;

		Cursor contacts_cursor = resolver.query(contact_uri, new String[]{"contact_id"}, null, null, null);

		while(contacts_cursor.moveToNext()){

			

			String id = contacts_cursor.getString(0);

			

			System.out.println("id :" + id);

			//根据 id 去查询  data, 只要 是 id 相同的 data的数据, 就都是同一个  联系人的信息

			Cursor dataCursor = resolver.query(data_uri, new String[]{"data1","mimetype"}, "raw_contact_id=?", new String[]{id}, null);

			

			while(dataCursor.moveToNext()){

				

				String data = dataCursor.getString(0);

				String type = dataCursor.getString(1);

				System.out.println("data :" + data);

				System.out.println("type :" + type);

			}

			

			dataCursor.close();

			System.out.println("===========");

		}

		contacts_cursor.close();

		

	}



}