内容提供者之获取联系人信息

package com.example.book_provider;

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

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Adapter;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
/**内容提供者：ContentProvider
 * 获取联系人：需要读取联系人的权限,
 * 需要实现数据共享就需要继承ContentProvider把数据分享出去，其他程序使用getContentResolver方法就可以对数据进行操作
 */
public class MainActivity extends Activity {
    private List<String> list=new ArrayList<String>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ListView lv=(ListView) findViewById(R.id.listView1);//适配器的数据
        final Button add=(Button) findViewById(R.id.button1);
        final ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,list);
        lv.setAdapter(adapter);//获取内容分解器去查询数据，和SQL方法类似
        Cursor cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null, null, null, null);
        while(cursor.moveToNext()){//游标
            //获取联系人姓名
            String name=cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
            //获取联系人电话号码
            String number=cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
            list.add(name+"\n"+number);
        }
        if(cursor!=null)
            cursor.close();
        add.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                list.add("张山"+"\n"+"1234654");
                adapter.notifyDataSetChanged();//通知适配器数据发送改变
            }
        });
    
    }
}

XML文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.book_provider"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="15"
        android:targetSdkVersion="15" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <!-- 获取联系人的权限 -->
    <uses-permission android:name="android.permission.READ_CONTACTS"/>
    
</manifest>

 获取联系人信息:包括邮箱

//读取联系人的权限:<uses-permission android:name="android.permission.READ_CONTACTS"/>
public class MainActivity extends Activity {
    
    private ContentResolver contentResolver;
    
    /**
     *管理联系人的uri
     */
    private  Uri contactsUri = ContactsContract.Contacts.CONTENT_URI;
    
    private Uri phoneUri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;// 管理联系人的电话的Uri
    
    private Uri emailUri = ContactsContract.CommonDataKinds.Email.CONTENT_URI;// 管理联系人的Email的Uri

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        //获取contentResolver对象操作数据库
        contentResolver = getContentResolver();
        
        //获得数据
        List<Contact> data = getContactsDatalist();
        for (Contact contact : data) {
            System.out.println(contact);
        }
    }
    
    
    public List<Contact> getContactsDatalist(){
        ArrayList<Contact> dataList = new ArrayList<Contact>();
        //先查出所有的联系人--得到姓名和_id
        //根据_id去查询联系人的电话号码
        //根据_id再去查询联系人的email
        
        Cursor cursorContracts = contentResolver.query(contactsUri, new String[]{ContactsContract.Contacts._ID,ContactsContract.Contacts.DISPLAY_NAME}, null, null, null);
        Contact contact;
        while(cursorContracts.moveToNext()){
            contact = new Contact();
            int _id  = cursorContracts.getInt(cursorContracts.getColumnIndex(ContactsContract.Contacts._ID));
            String name = cursorContracts.getString(cursorContracts.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
            contact.set_id(_id);
            contact.setName(name);
            
            //根据_id去查询联系人的电话号码
            Cursor cursorPhone = contentResolver.query(phoneUri, new String[]{ContactsContract.CommonDataKinds.Phone.NUMBER}, ContactsContract.CommonDataKinds.Phone.RAW_CONTACT_ID + " = ?", new String[]{_id + ""}, null);
            while(cursorPhone.moveToNext()){
                String phone = cursorPhone.getString(cursorPhone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                contact.setPhone(phone);
            }
            //根据_id再去查询联系人的email
            Cursor cursorEmail= contentResolver.query(emailUri, new String[]{ContactsContract.CommonDataKinds.Email.DATA}, ContactsContract.CommonDataKinds.Email.RAW_CONTACT_ID + " = ?", new String[]{_id + ""}, null);
            while(cursorEmail.moveToNext()){
                String email = cursorEmail.getString(cursorEmail.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
                contact.setEmail(email);
            }
            dataList.add(contact);
        }
        return dataList;
    }
}

 

2.跳转到联系人界面，并获取选择的联系人信息

//需要权限：<uses-permission android:name="android.permission.READ_CONTACTS"/> 跳转到联系人界面
startActivityForResult(new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI), 0);


@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == Activity.RESULT_OK && requestCode == 0) {
            ContentResolver reContentResolverol = getContentResolver();
            Uri contactData = data.getData();
            Cursor cursor = managedQuery(contactData, null, null, null, null);
            if(cursor != null){
                cursor.moveToFirst();
                String username = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                Log.e("tag","用户名="+username);
                String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
                Cursor phone = reContentResolverol.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                        null,
                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactId,
                        null,
                        null);
                //当一个人有多个号码的时候
                while (phone.moveToNext()) {
                    String usernumber = phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                    String userName = phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                    Log.e("tag","手机号="+usernumber + ",用户名="+userName);
                }
                phone.close();
            }else{
                //也许点击的是文件管理器
                Log.e("tag","联系人信息获取失败,获取的文件路径:" + contactData.getPath());
            }
        }
    }