Listview 내에서 arraylist 의 초성 검색 예제입니다.
참고 url
http://www.androidpub.com/45681
HangulUtils.cass 파일을 생성합니다.
/**
* com.ziofront.utils
* HangulUtils.java
* Jiho Park 2009. 11. 27.
*
* Copyright (c) 2009 ziofront.com. All Rights Reserved.
*/
public class HangulUtils {
private static String toHexString(int decimal) {
Long intDec = Long.valueOf(decimal);
return Long.toHexString(intDec);
}
public static final int HANGUL_BEGIN_UNICODE = 44032; // 가
public static final int HANGUL_END_UNICODE = 55203; // 힣
public static final int HANGUL_BASE_UNIT = 588;
public static final int[] INITIAL_SOUND_UNICODE = { 12593, 12594, 12596,
12599, 12600, 12601, 12609, 12610, 12611, 12613, 12614, 12615,
12616, 12617, 12618, 12619, 12620, 12621, 12622 };
public static final char[] INITIAL_SOUND = { 'ㄱ', 'ㄲ', 'ㄴ', 'ㄷ', 'ㄸ', 'ㄹ',
'ㅁ', 'ㅂ', 'ㅃ', 'ㅅ', 'ㅆ', 'ㅇ', 'ㅈ', 'ㅉ', 'ㅊ', 'ㅋ', 'ㅌ', 'ㅍ', 'ㅎ' };
/**
* 문자를 유니코드(10진수)로 변환 후 반환 한다.
*
* @param ch
* @return
*/
public static int convertCharToUnicode(char ch) {
return (int) ch;
}
/**
* 문자열을 유니코드(10진수)로 변환 후 반환 한다.
*
* @param str
* @return
*/
public static int[] convertStringToUnicode(String str) {
int[] unicodeList = null;
if (str != null) {
unicodeList = new int[str.length()];
for (int i = 0; i < str.length(); i++) {
unicodeList[i] = convertCharToUnicode(str.charAt(i));
}
}
return unicodeList;
}
/**
* 유니코드(16진수)를 문자로 변환 후 반환 한다.
*
* @param hexUnicode
* @return
*/
public static char convertUnicodeToChar(String hexUnicode) {
return (char) Integer.parseInt(hexUnicode, 16);
}
/**
* 유니코드(10진수)를 문자로 변환 후 반환 한다.
*
* @param unicode
* @return
*/
public static char convertUnicodeToChar(int unicode) {
return convertUnicodeToChar(toHexString(unicode));
}
/**
*
* @param value
* @return
*/
public static String getHangulInitialSound(String value) {
StringBuffer result = new StringBuffer();
int[] unicodeList = convertStringToUnicode(value);
for (int unicode : unicodeList) {
if (HANGUL_BEGIN_UNICODE <= unicode
&& unicode <= HANGUL_END_UNICODE) {
int tmp = (unicode - HANGUL_BEGIN_UNICODE);
int index = tmp / HANGUL_BASE_UNIT;
result.append(INITIAL_SOUND[index]);
} else {
result.append(convertUnicodeToChar(unicode));
}
}
return result.toString();
}
public static boolean[] getIsChoSungList(String name) {
if (name == null) {
return null;
}
boolean[] choList = new boolean[name.length()];
for (int i = 0; i < name.length(); i++) {
char c = name.charAt(i);
boolean isCho = false;
for (char cho : INITIAL_SOUND) {
if (c == cho) {
isCho = true;
break;
}
}
choList[i] = isCho;
}
return choList;
}
public static String getHangulInitialSound(String value,
String searchKeyword) {
return getHangulInitialSound(value, getIsChoSungList(searchKeyword));
}
public static String getHangulInitialSound(String value, boolean[] isChoList) {
StringBuffer result = new StringBuffer();
int[] unicodeList = convertStringToUnicode(value);
for (int idx = 0; idx < unicodeList.length; idx++) {
int unicode = unicodeList[idx];
if (isChoList != null && idx <= (isChoList.length - 1)) {
if (isChoList[idx]) {
if (HANGUL_BEGIN_UNICODE <= unicode
&& unicode <= HANGUL_END_UNICODE) {
int tmp = (unicode - HANGUL_BEGIN_UNICODE);
int index = tmp / HANGUL_BASE_UNIT;
result.append(INITIAL_SOUND[index]);
} else {
result.append(convertUnicodeToChar(unicode));
}
} else {
result.append(convertUnicodeToChar(unicode));
}
} else {
result.append(convertUnicodeToChar(unicode));
}
}
return result.toString();
}
public static void main(String[] args) {
for (char ch : HangulUtils.INITIAL_SOUND) {
System.out.print(HangulUtils.convertCharToUnicode(ch) + ",");
}
}
}
ListView뷰를 구성합니다.
xml코드
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorBg">
<android.support.v7.widget.RecyclerView
android:layout_height="match_parent"
android:layout_width="match_parent"
android:background="@color/colorBg"
android:id="@+id/rv">
</android.support.v7.widget.RecyclerView>
<!-- no data -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:id="@+id/tv_noSearch"
android:textColor="#000000"
android:text="검색된 메모가 없습니다"
android:visibility="invisible"
android:textSize="16sp"/>
</RelativeLayout>
EditText 내에서의 TextWathcher 작업을 합니다.
search_view = (EditText) findViewById(R.id.search_view);
search_view.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence c, int i, int i1, int i2) {
setChangeListData(c.toString());
}
@Override
public void afterTextChanged(Editable editable) {
}
});
setChangeListData 메소드를 작성합니다.
public void setChangeListData(String searchKeyword) {
if(searchKeyword != null) {
if (searchKeyword.length() == 0) {
setLoadListData(oriList);
} else {
List<ItemMemo> temp = new ArrayList<>();
for(ItemMemo i : mList) {
boolean isAdd = false;
String iniName = HangulUtils.getHangulInitialSound(i.contents, searchKeyword);
if (iniName.indexOf(searchKeyword) >= 0) {
isAdd = true;
}
if(isAdd) {
temp.add(i);
}
}
setSearchData(temp);
}
} else {
setLoadListData(oriList);
}
}
private void setSearchData(List<ItemMemo> list) {
lay_noData.setVisibility(View.GONE);
tv_noSearch.setVisibility(View.GONE);
if(list.size() == 0) {
rv.setVisibility(View.INVISIBLE);
tv_noSearch.setVisibility(View.VISIBLE);
} else {
rv.setVisibility(View.VISIBLE);
mAdapter.swap(list);
}
}
