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。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持呐喊教程。
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