查询手机联系人的信息

<span style="font-size:18px;">// 内容访问者
ContentResolver contentResolver = getContentResolver();
// content 的Uri
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
// 读取
Cursor cursor = contentResolver.query(uri, null, null, null, null);
StringBuffer sb = new StringBuffer();
	if (cursor != null) {
		while (cursor.moveToNext()) {
			// 联系人的编号
			// 联系人的名字
			// 联系人的号码
			// ContactsContract.CommonDataKinds.Phone._ID
			// ContactsContract.CommonDataKinds.Phone.NUMBER
			// ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME
			String number = cursor
						.getString(cursor
								.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
			String name = cursor
						.getString(cursor
								.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
			String id = cursor
						.getString(cursor
								.getColumnIndex(ContactsContract.CommonDataKinds.Phone._ID));
				sb.append(name).append(",").append(number).append(",")
						.append(id);
			show.setText(sb.toString());
	}
	cursor.close();
}</span>