简单的AsyncQueryHandler获取手机联系人

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。