Android使用AsyncQueryHandler实现获取手机联系人功能

利用AsyncQueryHandler能异步任务获取手机联系人，增加用户体验，使用起来也很方便。不多说，上干货。

布局文件main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:orientation="vertical"
 tools:ignore="HardcodedText" >
 <Button
   android:id="@+id/bt_getCantacts"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="获取联系人信息" />
</LinearLayout>

contact.java 联系人bean文件

package com.larson.cantact;
public class Contact {
 private int contactId;//联系人ID
 private String displayName;//联系人姓名
 private String phoneNum;//联系人手机号
 private String sortKey;//排序Key
 private Long photoId;//头像ID
 private String lookUpKey;
 private int selected = 0;//被选中的行号
 private String formattedNumber;//被格式化的号码
 private String pinyin;//姓名对应的汉语拼音

public int getContactId() {
   return contactId;
 }
 public void setContactId(int contactId) {
   this.contactId = contactId;
 }
 public String getDisplayName() {
   return displayName;
 }
 public void setDisplayName(String displayName) {
   this.displayName = displayName;
 }
 public String getPhoneNum() {
   return phoneNum;
 }
 public void setPhoneNum(String phoneNum) {
   this.phoneNum = phoneNum;
 }
 public String getSortKey() {
   return sortKey;
 }
 public void setSortKey(String sortKey) {
   this.sortKey = sortKey;
 }
 public Long getPhotoId() {
   return photoId;
 }
 public void setPhotoId(Long photoId) {
   this.photoId = photoId;
 }
 public String getLookUpKey() {
   return lookUpKey;
 }
 public void setLookUpKey(String lookUpKey) {
   this.lookUpKey = lookUpKey;
 }
 public int getSelected() {
   return selected;
 }
 public void setSelected(int selected) {
   this.selected = selected;
 }
 public String getFormattedNumber() {
   return formattedNumber;
 }
 public void setFormattedNumber(String formattedNumber) {
   this.formattedNumber = formattedNumber;
 }
 public String getPinyin() {
   return pinyin;
 }
 public void setPinyin(String pinyin) {
   this.pinyin = pinyin;
 }
}

MainActivity.java

package com.larson.cantact;
import java.util.ArrayList;
import android.app.Activity;
import android.content.AsyncQueryHandler;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.ContactsContract;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
 private Button myCantacts;
 private AsyncQueryHandler asyncQuery;
 @Override
 public void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.main);
   myCantacts = (Button) this.findViewById(R.id.bt_getCantacts);
   myCantacts.setOnClickListener(new OnClickListener() {
     @Override
     public void onClick(View v) {
       asyncQuery = new MyAsyncQueryHandler(getContentResolver());
       initSQL();
     }
   });
 }
 protected void initSQL() {
   // 联系人URI
   Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
   // 联系人ID，联系人NAME,
   String[] projection = { ContactsContract.CommonDataKinds.Phone._ID,
       ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
       ContactsContract.CommonDataKinds.Phone.DATA1, "sort_key",
       ContactsContract.CommonDataKinds.Phone.CONTACT_ID, };
   asyncQuery.startQuery(0, null, uri, projection, null, null,
       "sort_key COLLATE LOCALIZED asc");
 }
 private class MyAsyncQueryHandler extends AsyncQueryHandler {
   public MyAsyncQueryHandler(ContentResolver cr) {
     super(cr);
   }
   protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
     querying(cursor);
   }
 }
 private void querying(final Cursor cursor) {
   Handler handlerInsertOrder = new Handler() {
     public void handleMessage(Message msg) {
       switch (msg.what) {
       case MyAsyncTask.DOWNLOADING_START_MESSAGE:
         System.out.println("begin to sort out t9");
         break;
       case MyAsyncTask.DOWNLOAD_END_MESSAGE:
         Bundle bundle1 = msg.getData();
         ArrayList<ContactBean> list = (ArrayList<ContactBean>) bundle1
             .get("完成");
         for (ContactBean ci : list) {
           System.out.println(ci.getDisplayName());
           System.out.println(ci.getPhoneNum());
           System.out.println("--------------------------------");
         }
         break;
       default:
         break;
       }
       super.handleMessage(msg);
     }
   };
   MyAsyncTask.startRequestServerData(this, handlerInsertOrder, cursor);
 }
}

自定义的MyAsyncTask.java

package com.anjoyo.cantact;
import java.util.ArrayList;
import android.content.Context;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
public class MyAsyncTask extends
   AsyncTask<Cursor, Void, ArrayList<ContactBean>> {
 /** 开始整理 */
 public static final int DOWNLOADING_START_MESSAGE = 7;
 /** 整理结束 */
 public static final int DOWNLOAD_END_MESSAGE = 17;
 private Context mContext = null;
 private Handler mHandler = null;
 protected MyAsyncTask(Context context, Handler handler) {
   this.mContext = context;
   this.mHandler = handler;
 }
 @Override
 protected void onPreExecute() {
   sendStartMessage(DOWNLOADING_START_MESSAGE);
 }
 @Override
 protected ArrayList<ContactBean> doInCursor... params) {
   // 只需要把原来放在子线程的代码放到这个方法就行
   Cursor cursor = params[0];
   ArrayList<ContactBean> ciList = new ArrayList<ContactBean>();
   if (cursor != null && cursor.getCount() > 0) {
     try {
       cursor.moveToFirst();
       for (int i = 0; i < cursor.getCount(); i++) {
         cursor.moveToPosition(i);
         String name = cursor.getString(1);
         String number = cursor.getString(2);
         int contactId = cursor.getInt(4);
         ContactBean contactInfo = new ContactBean();
         contactInfo.setContactId(contactId);
         contactInfo.setPhoneNum(number);
         contactInfo.setDisplayName(name);
         if (contactInfo.getDisplayName() == null) {
           contactInfo.setDisplayName(contactInfo.getPhoneNum());
         }

ciList.add(contactInfo);
       }
     } catch (Exception e) {
       e.printStackTrace();
     }
   }
   return ciList;
 }
 @Override
 protected void onPostExecute(ArrayList<ContactBean> result) {
   sendEndMessage(DOWNLOAD_END_MESSAGE, result);
 }
 public static void startRequestServerData(Context context, Handler handler,
     Cursor cursor) {
   new MyAsyncTask(context, handler).execute(cursor);
 }
 /**
  * 发送开始整理消息
  *
  * @param messageWhat
  */
 private void sendStartMessage(int messageWhat) {
   Message message = new Message();
   message.what = messageWhat;
   if (mHandler != null) {
     mHandler.sendMessage(message);
   }
 }
 /**
  * 发送整理结束消息
  *
  * @param messageWhat
  */
 private void sendEndMessage(int messageWhat, ArrayList<ContactBean> result) {
   Message message = new Message();
   message.what = messageWhat;
   Bundle bundle = new Bundle();
   bundle.putSerializable("完成", result);
   message.setData(bundle);
   if (mHandler != null) {
     mHandler.sendMessage(message);
   }
 }
}

 小工具，供人参考，方便广大程序员，欢迎指正。