android--加载本地联系人

首先先建布局文件，界面很简单，就是一个搜索框和下面的联系人列表：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#FFD3D7DF"
    android:orientation="vertical"
    android:padding="0dip" >
    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="3dip"
        android:layout_marginRight="3dip"
        android:layout_marginTop="3dip" >

        <EditText
            android:id="@+id/search_view"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:hint="@string/hint_search_contacts"
            android:paddingLeft="32dip"
            android:singleLine="true"
            android:textSize="16sp" />

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignLeft="@id/search_view"
            android:layout_centerVertical="true"
            android:layout_marginLeft="3dip"
            android:src="@drawable/contacts" />
    </RelativeLayout>

    <ListView
        android:id="@+id/contact_list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="0dip"
        android:layout_marginLeft="0dip"
        android:layout_marginRight="0dip"
        android:layout_marginTop="0dip"
        android:layout_weight="1.0"
        android:cacheColorHint="#00000000"
        android:divider="#00000000"
        android:dividerHeight="0.1px"
        android:fadingEdge="none"
        android:footerDividersEnabled="false"
        android:listSelector="@null"
        android:paddingBottom="0dip"
        android:paddingLeft="0dip"
        android:paddingRight="0dip"
        android:paddingTop="0dip" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="horizontal"
	android:layout_height="wrap_content"
	android:layout_width="fill_parent"
	android:paddingTop="2dip"
	android:paddingBottom="2dip"
	android:background="@color/list_item_background">

	<ImageView
		android:id="@+id/photo"
		android:layout_height="wrap_content" 
		android:layout_width="wrap_content"
		android:layout_marginLeft="5dip"
		android:layout_gravity="center_vertical"
		android:layout_weight="1"
		android:src="@drawable/default_avatar"
	/>

	<LinearLayout
		android:orientation="vertical"
		android:layout_height="wrap_content"
		android:layout_width="wrap_content"
		android:layout_gravity="center_vertical"
		android:layout_marginLeft="5dip"
		android:layout_weight="100">
		<TextView android:id="@+id/text1" 
			android:typeface="serif"
			android:singleLine="true"
			style="@style/list_font_main_text" />
	
		<LinearLayout
			android:orientation="horizontal"
			android:layout_height="wrap_content"
			android:layout_width="wrap_content"
			android:layout_marginTop="3dip">
			<TextView android:id="@+id/text2" 
				android:typeface="serif"
				android:singleLine="true"
				style="@style/list_font_detail_text" />
		
			<TextView android:id="@+id/text3" 
				android:ellipsize="marquee"
				android:layout_marginLeft="3dip"
				android:marqueeRepeatLimit="marquee_forever"
				android:scrollHorizontally="true"
				style="@style/list_font_detail_text" />
		</LinearLayout>
	</LinearLayout>
</LinearLayout>

然后是点击事件：(点击后要把选择的联系人号码返回到输入框里)

// 获取联系人按钮对象并绑定onClick单击事件
		phoneButton = (Button) findViewById(R.id.find_phone);
		phoneButton.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				// 从联系人选择号码，再通过onActivityResult()方法处理回调结果
				Intent intent = new Intent(context, ContactsActivity.class);
				startActivityForResult(intent, REQUEST_CODE);
			}
		});

/**
	 * 选择联系人的回调处理函数
	 */
	@Override
	public void onActivityResult(int reqCode, int resultCode, Intent data) {
		super.onActivityResult(reqCode, resultCode, data);

		if (resultCode == RESULT_OK) {
			switch (reqCode) {
			case REQUEST_CODE:
				String phone = data.getStringExtra("phone");
				phoneEditText.setText(phone);
				break;
			}
		}
	}

下面就是联系人界面的activity了：

/**
 * 显示用户手机上的联系人
 * 
 * @author Mr.Z
 * @time 2012-3-21
 * 
 */
public class ContactsActivity extends Activity {
	private Context ctx = ContactsActivity.this;

	private TextView topTitleTextView;

	private ListView listView = null;
	List<HashMap<String, String>> contactsList = null;
	private EditText contactsSearchView;
	private ProgressDialog progressDialog = null;

	// 数据加载完成的消息
	private final int MESSAGE_SUCC_LOAD = 0;
	// 数据查询完成的消息
	private final int MESSAGE_SUCC_QUERY = 1;

	private Handler handler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			super.handleMessage(msg);

			switch (msg.what) {
			case MESSAGE_SUCC_LOAD:
				listView.setAdapter(new ContactsAdapter(ctx));
				progressDialog.dismiss();
				break;
			case MESSAGE_SUCC_QUERY:
				listView.setAdapter(new ContactsAdapter(ctx));
				break;
			}
		}
	};

	protected void onCreate(Bundle savedInstanceState) {
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
		super.onCreate(savedInstanceState);
		this.setContentView(R.layout.contacts);

		// 使用listView显示联系人
		listView = (ListView) findViewById(R.id.contact_list);

		loadAndSaveContacts();

		// 绑定listView item的单击事件
		listView.setOnItemClickListener(new OnItemClickListener() {
			@SuppressWarnings("unchecked")
			public void onItemClick(AdapterView<?> adapterView, View view, int position, long _id) {
				HashMap<String, String> map = (HashMap<String, String>) adapterView.getItemAtPosition(position);
				String phone = map.get("phone");

				// 对手机号码进行预处理（去掉号码前的+86、首尾空格、“-”号等）
				phone = phone.replaceAll("^(\\+86)", "");
				phone = phone.replaceAll("^(86)", "");
				phone = phone.replaceAll("-", "");
				phone = phone.trim();

				// 如果当前号码并不是手机号码
				if (!SaleUtil.isValidPhoneNumber(phone))
					SaleUtil.createDialog(ctx, R.string.dialog_title_tip, getString(R.string.alert_contacts_error_phone));
				else {
					Intent intent = new Intent();
					intent.putExtra("phone", phone);

					setResult(RESULT_OK, intent);
					// 关闭当前窗口
					finish();
				}
			}
		});

		contactsSearchView = (EditText) findViewById(R.id.search_view);
		contactsSearchView.addTextChangedListener(new TextWatcher() {
			public void afterTextChanged(Editable s) {
			}

			public void beforeTextChanged(CharSequence s, int start, int count, int after) {
			}

			public void onTextChanged(CharSequence s, int start, int before, int count) {
				queryContacts(s.toString());
			}
		});
	}

	/**
	 * 加载并存储联系人数据
	 */
	private void loadAndSaveContacts() {
		progressDialog = ProgressDialog.show(ctx, null, "正在加载联系人数据...");
		new Thread() {
			@Override
			public void run() {
				// 获取联系人数据
				contactsList = findContacts();

				// 临时存储联系人数据
				DBHelper.saveContacts(ctx, contactsList);

				// 发送消息通知更新UI
				handler.sendEmptyMessage(MESSAGE_SUCC_LOAD);
			}
		}.start();
	}

	/**
	 * 根据条件从本地临时库中获取联系人
	 * 
	 * @param keyWord 查询关键字
	 */
	private void queryContacts(final String keyWord) {
		new Thread() {
			@Override
			public void run() {
				// 获取联系人数据
				contactsList = DBHelper.findContactsByCond(ctx, keyWord);
				// 发送消息通知更新UI
				handler.sendEmptyMessage(MESSAGE_SUCC_QUERY);
			}
		}.start();
	}

	/**
	 * 获取手机联系人信息
	 * 
	 * @return List<HashMap<String, String>>
	 */
	public List<HashMap<String, String>> findContacts() {
		List<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
		// 查询联系人
		Cursor contactsCursor = ctx.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, PhoneLookup.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
		// 姓名的索引
		int nameIndex = 0;
		// 联系人姓名
		String name = null;
		// 联系人头像ID
		String photoId = null;
		// 联系人的ID索引值
		String contactsId = null;
		// 查询联系人的电话号码
		Cursor phoneCursor = null;

		while (contactsCursor.moveToNext()) {
			nameIndex = contactsCursor.getColumnIndex(PhoneLookup.DISPLAY_NAME);
			name = contactsCursor.getString(nameIndex);
			photoId = contactsCursor.getString(contactsCursor.getColumnIndex(PhoneLookup.PHOTO_ID));

			contactsId = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts._ID));
			phoneCursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactsId, null, null);
			// 遍历联系人号码（一个人对应于多个电话号码）
			while (phoneCursor.moveToNext()) {
				HashMap<String, String> phoneMap = new HashMap<String, String>();
				// 添加联系人姓名
				phoneMap.put("name", name);
				// 添加联系人头像
				phoneMap.put("photo", photoId);
				// 添加电话号码
				phoneMap.put("phone", phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));
				// 添加号码类型（住宅电话、手机号码、单位电话等）
				phoneMap.put("type", getString(ContactsContract.CommonDataKinds.Phone.getTypeLabelResource(phoneCursor.getInt(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE)))));
				list.add(phoneMap);
			}
			phoneCursor.close();
		}
		contactsCursor.close();

		return list;
	}

	/**
	 * 获取联系人头像
	 * 
	 * @param context 上下文环境
	 * @param photoId 头像ID
	 * @return Bitmap
	 */
	public static Bitmap getPhoto(Context context, String photoId) {
		Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.default_avatar);
		if (photoId != null && "".equals(photoId)) {
			String[] projection = new String[] { ContactsContract.Data.DATA15 };
			String selection = "ContactsContract.Data._ID = " + photoId;
			Cursor cur = context.getContentResolver().query(ContactsContract.Data.CONTENT_URI, projection, selection, null, null);
			if (cur != null) {
				cur.moveToFirst();
				byte[] contactIcon = null;
				contactIcon = cur.getBlob(cur.getColumnIndex(ContactsContract.Data.DATA15));
				if (contactIcon != null) {
					bitmap = BitmapFactory.decodeByteArray(contactIcon, 0, contactIcon.length);
				}
			}
		}
		return bitmap;
	}

	/**
	 * 自定义联系人Adapter
	 */
	class ContactsAdapter extends BaseAdapter {
		private LayoutInflater inflater = null;

		public ContactsAdapter(Context ctx) {
			inflater = LayoutInflater.from(ctx);
		}

		public int getCount() {
			return contactsList.size();
		}

		public Object getItem(int position) {
			return contactsList.get(position);
		}

		public long getItemId(int position) {
			return position;
		}

		public View getView(int position, View convertView, ViewGroup parent) {
			ViewHolder holder = null;
			if (convertView == null) {
				holder = new ViewHolder();
				convertView = inflater.inflate(R.layout.contacts_listview_item, null);

				holder.text1 = (TextView) convertView.findViewById(R.id.text1);
				holder.text2 = (TextView) convertView.findViewById(R.id.text2);
				holder.text3 = (TextView) convertView.findViewById(R.id.text3);

				convertView.setTag(holder);
			} else {
				holder = (ViewHolder) convertView.getTag();
			}

			holder.text1.setText(contactsList.get(position).get("name"));
			holder.text2.setText(contactsList.get(position).get("type"));
			holder.text3.setText(contactsList.get(position).get("phone"));

			return convertView;
		}

		public final class ViewHolder {
			private TextView text1;
			private TextView text2;
			private TextView text3;
		}
	}
}

查询方法语句：

/**
	 * 根据条件查询联系人数据
	 * 
	 * @param context 上下文环境
	 * @param keyWord 查询关键字
	 * @return List<HashMap<String, String>>
	 */
	public static List<HashMap<String, String>> findContactsByCond(Context context, String keyWord) {
		List<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();

		SQLiteDatabase db = DBHelper.getSQLiteDb(context);

		String sql = "select * from contacts where name like '" + keyWord + "%' or name_alias like '" + keyWord + "%' order by _id";

		// 查询数据
		Cursor cursor = db.rawQuery(sql, null);
		while (cursor.moveToNext()) {
			HashMap<String, String> map = new HashMap<String, String>();
			map.put("name", cursor.getString(cursor.getColumnIndex("name")));
			map.put("phone", cursor.getString(cursor.getColumnIndex("phone")));
			map.put("type", cursor.getString(cursor.getColumnIndex("type")));
			map.put("photo", cursor.getString(cursor.getColumnIndex("photo")));
			list.add(map);
		}
		cursor.close();
		db.close();

		return list;
	}

	/**
	 * 存储联系人信息
	 * 
	 * @param context 上下文环境
	 * @param contactsList 联系人列表
	 */
	public static void saveContacts(Context context, List<HashMap<String, String>> contactsList) {
		SQLiteDatabase db = DBHelper.getSQLiteDb(context);

		// 开启事务控制
		db.beginTransaction();
		try {
			// 先将联系人数据清空
			db.execSQL("drop table if exists contacts");
			db.execSQL("create table contacts(_id integer not null primary key autoincrement, name varchar(50), name_alias varchar(10), phone varchar(30), type varchar(50), photo varchar(50))");

			String sql = null;
			for (HashMap<String, String> contactsMap : contactsList) {
				sql = String.format("insert into contacts(name,name_alias,phone,type,photo) values('%s','%s','%s','%s','%s')", contactsMap.get("name"), SaleUtil.getPinYinFirstAlphabet(contactsMap.get("name")), contactsMap.get("phone"), contactsMap.get("type"), contactsMap.get("photo"));
				db.execSQL(sql);
			}

			// 设置事务标志为成功
			db.setTransactionSuccessful();
		} finally {
			// 结束事务
			db.endTransaction();
			db.close();
		}
	}

工具类：

/**
	 * 判断客户手机号码是否符合规则
	 * 
	 * @param userPhone 客户手机号码
	 * @return true | false
	 */
	public static boolean isValidPhoneNumber(String userPhone) {
		if (null == userPhone || "".equals(userPhone))
			return false;

		Pattern p = Pattern.compile("^0?1[0-9]{10}");
		Matcher m = p.matcher(userPhone);
		return m.matches();
	}

	/**
	 * 获取中文的拼音首字母
	 * 
	 * @param chinese 中文
	 * @return 拼音首字母
	 */
	public static String getPinYinFirstAlphabet(String chinese) {
		String convert = "";
		for (int j = 0; j < chinese.length(); j++) {
			char word = chinese.charAt(j);
			String[] pinyinArray = PinyinHelper.toHanyuPinyinStringArray(word);
			if (pinyinArray != null) {
				convert += pinyinArray[0].charAt(0);
			} else {
				convert += word;
			}
		}
		return convert;
	}

最后加上权限就行了;

 <!-- 访问联系人的权限 -->
    <uses-permission android:name="android.permission.READ_CONTACTS" />