Android使用AsyncQueryHandler实现获取手机联系人功能

<?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> 

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;   } } 

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);   } } 

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);     }   } }