編輯:Android開發實例
今天給大家帶來ListView的A-Z字母排序和過濾搜索功能並且實現漢字轉成拼音的功能,我們知道一般我們對聯系人,城市列表等實現A-Z的排序,因為聯系人和城市列表我們可以直接從數據庫中獲取他的漢字拼音,而對於一般的數據,我們怎麼實現A-Z的排序,我們需要將漢字轉換成拼音就行了,接下來就帶大家實現一般數據的A-Z排序功能,首先先看下效果圖
上面是一個帶刪除按鈕的EditText,我們在輸入框中輸入可以自動過濾出我們想要的東西,當輸入框中沒有數據自動替換到原來的數據列表,然後下面一個ListView用來顯示數據列表,右側是一個字母索引表,當我們點擊不同的字母,ListView會定位到該字母地方,了解了布局之後,我們先看下項目結構吧
我按照項目中類的順序來一一介紹其功能
1.SortModel 一個實體類,裡面一個是ListView的name,另一個就是顯示的name拼音的首字母
- package com.example.sortlistview;
- public class SortModel {
- private String name; //顯示的數據
- private String sortLetters; //顯示數據拼音的首字母
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public String getSortLetters() {
- return sortLetters;
- }
- public void setSortLetters(String sortLetters) {
- this.sortLetters = sortLetters;
- }
- }
2.SideBar類就是ListView右側的字母索引View,我們需要使用setTextView(TextView mTextDialog)來設置用來顯示當前按下的字母的TextView,以及使用setOnTouchingLetterChangedListener方法來設置回調接口,在回調方法onTouchingLetterChanged(String s)中來處理不同的操作
- package com.example.sortlistview;
- import android.content.Context;
- import android.graphics.Canvas;
- import android.graphics.Color;
- import android.graphics.Paint;
- import android.graphics.Typeface;
- import android.graphics.drawable.ColorDrawable;
- import android.util.AttributeSet;
- import android.view.MotionEvent;
- import android.view.View;
- import android.widget.TextView;
- public class SideBar extends View {
- // 觸摸事件
- private OnTouchingLetterChangedListener onTouchingLetterChangedListener;
- // 26個字母
- public static String[] b = { "A", "B", "C", "D", "E", "F", "G", "H", "I",
- "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V",
- "W", "X", "Y", "Z", "#" };
- private int choose = -1;// 選中
- private Paint paint = new Paint();
- private TextView mTextDialog;
- /**
- * 為SideBar設置顯示字母的TextView
- * @param mTextDialog
- */
- public void setTextView(TextView mTextDialog) {
- this.mTextDialog = mTextDialog;
- }
- public SideBar(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
- }
- public SideBar(Context context, AttributeSet attrs) {
- super(context, attrs);
- }
- public SideBar(Context context) {
- super(context);
- }
- /**
- * 重寫這個方法
- */
- protected void onDraw(Canvas canvas) {
- super.onDraw(canvas);
- // 獲取焦點改變背景顏色.
- int height = getHeight();// 獲取對應高度
- int width = getWidth(); // 獲取對應寬度
- int singleHeight = height / b.length;// 獲取每一個字母的高度
- for (int i = 0; i < b.length; i++) {
- paint.setColor(Color.rgb(33, 65, 98));
- // paint.setColor(Color.WHITE);
- paint.setTypeface(Typeface.DEFAULT_BOLD);
- paint.setAntiAlias(true);
- paint.setTextSize(20);
- // 選中的狀態
- if (i == choose) {
- paint.setColor(Color.parseColor("#3399ff"));
- paint.setFakeBoldText(true);
- }
- // x坐標等於中間-字符串寬度的一半.
- float xPos = width / 2 - paint.measureText(b[i]) / 2;
- float yPos = singleHeight * i + singleHeight;
- canvas.drawText(b[i], xPos, yPos, paint);
- paint.reset();// 重置畫筆
- }
- }
- @Override
- public boolean dispatchTouchEvent(MotionEvent event) {
- final int action = event.getAction();
- final float y = event.getY();// 點擊y坐標
- final int oldChoose = choose;
- final OnTouchingLetterChangedListener listener = onTouchingLetterChangedListener;
- final int c = (int) (y / getHeight() * b.length);// 點擊y坐標所占總高度的比例*b數組的長度就等於點擊b中的個數.
- switch (action) {
- case MotionEvent.ACTION_UP:
- setBackgroundDrawable(new ColorDrawable(0x00000000));
- choose = -1;//
- invalidate();
- if (mTextDialog != null) {
- mTextDialog.setVisibility(View.INVISIBLE);
- }
- break;
- default:
- setBackgroundResource(R.drawable.sidebar_background);
- if (oldChoose != c) {
- if (c >= 0 && c < b.length) {
- if (listener != null) {
- listener.onTouchingLetterChanged(b[c]);
- }
- if (mTextDialog != null) {
- mTextDialog.setText(b[c]);
- mTextDialog.setVisibility(View.VISIBLE);
- }
- choose = c;
- invalidate();
- }
- }
- break;
- }
- return true;
- }
- /**
- * 向外公開的方法
- *
- * @param onTouchingLetterChangedListener
- */
- public void setOnTouchingLetterChangedListener(
- OnTouchingLetterChangedListener onTouchingLetterChangedListener) {
- this.onTouchingLetterChangedListener = onTouchingLetterChangedListener;
- }
- /**
- * 接口
- *
- * @author coder
- *
- */
- public interface OnTouchingLetterChangedListener {
- public void onTouchingLetterChanged(String s);
- }
- }
3.CharacterParser 這個類是將漢字轉換成拼音的類,該拼音沒有聲調的,該類是單例類,其中定義了三個方法,在這個demo中用到的是getSelling(String chs)方法,將詞組轉換成拼音
- package com.example.sortlistview;
- /**
- * Java漢字轉換為拼音
- *
- */
- public class CharacterParser {
- private static int[] pyvalue = new int[] {-20319, -20317, -20304, -20295, -20292, -20283, -20265, -20257, -20242, -20230, -20051, -20036, -20032,
- -20026, -20002, -19990, -19986, -19982, -19976, -19805, -19784, -19775, -19774, -19763, -19756, -19751, -19746, -19741, -19739, -19728,
- -19725, -19715, -19540, -19531, -19525, -19515, -19500, -19484, -19479, -19467, -19289, -19288, -19281, -19275, -19270, -19263, -19261,
- -19249, -19243, -19242, -19238, -19235, -19227, -19224, -19218, -19212, -19038, -19023, -19018, -19006, -19003, -18996, -18977, -18961,
- -18952, -18783, -18774, -18773, -18763, -18756, -18741, -18735, -18731, -18722, -18710, -18697, -18696, -18526, -18518, -18501, -18490,
- -18478, -18463, -18448, -18447, -18446, -18239, -18237, -18231, -18220, -18211, -18201, -18184, -18183, -18181, -18012, -17997, -17988,
- -17970, -17964, -17961, -17950, -17947, -17931, -17928, -17922, -17759, -17752, -17733, -17730, -17721, -17703, -17701, -17697, -17692,
- -17683, -17676, -17496, -17487, -17482, -17468, -17454, -17433, -17427, -17417, -17202, -17185, -16983, -16970, -16942, -16915, -16733,
- -16708, -16706, -16689, -16664, -16657, -16647, -16474, -16470, -16465, -16459, -16452, -16448, -16433, -16429, -16427, -16423, -16419,
- -16412, -16407, -16403, -16401, -16393, -16220, -16216, -16212, -16205, -16202, -16187, -16180, -16171, -16169, -16158, -16155, -15959,
- -15958, -15944, -15933, -15920, -15915, -15903, -15889, -15878, -15707, -15701, -15681, -15667, -15661, -15659, -15652, -15640, -15631,
- -15625, -15454, -15448, -15436, -15435, -15419, -15416, -15408, -15394, -15385, -15377, -15375, -15369, -15363, -15362, -15183, -15180,
- -15165, -15158, -15153, -15150, -15149, -15144, -15143, -15141, -15140, -15139, -15128, -15121, -15119, -15117, -15110, -15109, -14941,
- -14937, -14933, -14930, -14929, -14928, -14926, -14922, -14921, -14914, -14908, -14902, -14894, -14889, -14882, -14873, -14871, -14857,
- -14678, -14674, -14670, -14668, -14663, -14654, -14645, -14630, -14594, -14429, -14407, -14399, -14384, -14379, -14368, -14355, -14353,
- -14345, -14170, -14159, -14151, -14149, -14145, -14140, -14137, -14135, -14125, -14123, -14122, -14112, -14109, -14099, -14097, -14094,
- -14092, -14090, -14087, -14083, -13917, -13914, -13910, -13907, -13906, -13905, -13896, -13894, -13878, -13870, -13859, -13847, -13831,
- -13658, -13611, -13601, -13406, -13404, -13400, -13398, -13395, -13391, -13387, -13383, -13367, -13359, -13356, -13343, -13340, -13329,
- -13326, -13318, -13147, -13138, -13120, -13107, -13096, -13095, -13091, -13076, -13068, -13063, -13060, -12888, -12875, -12871, -12860,
- -12858, -12852, -12849, -12838, -12831, -12829, -12812, -12802, -12607, -12597, -12594, -12585, -12556, -12359, -12346, -12320, -12300,
- -12120, -12099, -12089, -12074, -12067, -12058, -12039, -11867, -11861, -11847, -11831, -11798, -11781, -11604, -11589, -11536, -11358,
- -11340, -11339, -11324, -11303, -11097, -11077, -11067, -11055, -11052, -11045, -11041, -11038, -11024, -11020, -11019, -11018, -11014,
- -10838, -10832, -10815, -10800, -10790, -10780, -10764, -10587, -10544, -10533, -10519, -10331, -10329, -10328, -10322, -10315, -10309,
- -10307, -10296, -10281, -10274, -10270, -10262, -10260, -10256, -10254};
- public static String[] pystr = new String[] {"a", "ai", "an", "ang", "ao", "ba", "bai", "ban", "bang", "bao", "bei", "ben", "beng", "bi", "bian",
- "biao", "bie", "bin", "bing", "bo", "bu", "ca", "cai", "can", "cang", "cao", "ce", "ceng", "cha", "chai", "chan", "chang", "chao", "che",
- "chen", "cheng", "chi", "chong", "chou", "chu", "chuai", "chuan", "chuang", "chui", "chun", "chuo", "ci", "cong", "cou", "cu", "cuan",
- "cui", "cun", "cuo", "da", "dai", "dan", "dang", "dao", "de", "deng", "di", "dian", "diao", "die", "ding", "diu", "dong", "dou", "du",
- "duan", "dui", "dun", "duo", "e", "en", "er", "fa", "fan", "fang", "fei", "fen", "feng", "fo", "fou", "fu", "ga", "gai", "gan", "gang",
- "gao", "ge", "gei", "gen", "geng", "gong", "gou", "gu", "gua", "guai", "guan", "guang", "gui", "gun", "guo", "ha", "hai", "han", "hang",
- "hao", "he", "hei", "hen", "heng", "hong", "hou", "hu", "hua", "huai", "huan", "huang", "hui", "hun", "huo", "ji", "jia", "jian",
- "jiang", "jiao", "jie", "jin", "jing", "jiong", "jiu", "ju", "juan", "jue", "jun", "ka", "kai", "kan", "kang", "kao", "ke", "ken",
- "keng", "kong", "kou", "ku", "kua", "kuai", "kuan", "kuang", "kui", "kun", "kuo", "la", "lai", "lan", "lang", "lao", "le", "lei", "leng",
- "li", "lia", "lian", "liang", "liao", "lie", "lin", "ling", "liu", "long", "lou", "lu", "lv", "luan", "lue", "lun", "luo", "ma", "mai",
- "man", "mang", "mao", "me", "mei", "men", "meng", "mi", "mian", "miao", "mie", "min", "ming", "miu", "mo", "mou", "mu", "na", "nai",
- "nan", "nang", "nao", "ne", "nei", "nen", "neng", "ni", "nian", "niang", "niao", "nie", "nin", "ning", "niu", "nong", "nu", "nv", "nuan",
- "nue", "nuo", "o", "ou", "pa", "pai", "pan", "pang", "pao", "pei", "pen", "peng", "pi", "pian", "piao", "pie", "pin", "ping", "po", "pu",
- "qi", "qia", "qian", "qiang", "qiao", "qie", "qin", "qing", "qiong", "qiu", "qu", "quan", "que", "qun", "ran", "rang", "rao", "re",
- "ren", "reng", "ri", "rong", "rou", "ru", "ruan", "rui", "run", "ruo", "sa", "sai", "san", "sang", "sao", "se", "sen", "seng", "sha",
- "shai", "shan", "shang", "shao", "she", "shen", "sheng", "shi", "shou", "shu", "shua", "shuai", "shuan", "shuang", "shui", "shun",
- "shuo", "si", "song", "sou", "su", "suan", "sui", "sun", "suo", "ta", "tai", "tan", "tang", "tao", "te", "teng", "ti", "tian", "tiao",
- "tie", "ting", "tong", "tou", "tu", "tuan", "tui", "tun", "tuo", "wa", "wai", "wan", "wang", "wei", "wen", "weng", "wo", "wu", "xi",
- "xia", "xian", "xiang", "xiao", "xie", "xin", "xing", "xiong", "xiu", "xu", "xuan", "xue", "xun", "ya", "yan", "yang", "yao", "ye", "yi",
- "yin", "ying", "yo", "yong", "you", "yu", "yuan", "yue", "yun", "za", "zai", "zan", "zang", "zao", "ze", "zei", "zen", "zeng", "zha",
- "zhai", "zhan", "zhang", "zhao", "zhe", "zhen", "zheng", "zhi", "zhong", "zhou", "zhu", "zhua", "zhuai", "zhuan", "zhuang", "zhui",
- "zhun", "zhuo", "zi", "zong", "zou", "zu", "zuan", "zui", "zun", "zuo"};
- private StringBuilder buffer;
- private String resource;
- private static CharacterParser characterParser = new CharacterParser();
- public static CharacterParser getInstance() {
- return characterParser;
- }
- public String getResource() {
- return resource;
- }
- public void setResource(String resource) {
- this.resource = resource;
- }
- /** * 漢字轉成ASCII碼 * * @param chs * @return */
- private int getChsAscii(String chs) {
- int asc = 0;
- try {
- byte[] bytes = chs.getBytes("gb2312");
- if (bytes == null || bytes.length > 2 || bytes.length <= 0) {
- throw new RuntimeException("illegal resource string");
- }
- if (bytes.length == 1) {
- asc = bytes[0];
- }
- if (bytes.length == 2) {
- int hightByte = 256 + bytes[0];
- int lowByte = 256 + bytes[1];
- asc = (256 * hightByte + lowByte) - 256 * 256;
- }
- } catch (Exception e) {
- System.out.println("ERROR:ChineseSpelling.class-getChsAscii(String chs)" + e);
- }
- return asc;
- }
- /** * 單字解析 * * @param str * @return */
- public String convert(String str) {
- String result = null;
- int ascii = getChsAscii(str);
- if (ascii > 0 && ascii < 160) {
- result = String.valueOf((char) ascii);
- } else {
- for (int i = (pyvalue.length - 1); i >= 0; i--) {
- if (pyvalue[i] <= ascii) {
- result = pystr[i];
- break;
- }
- }
- }
- return result;
- }
- /** * 詞組解析 * * @param chs * @return */
- public String getSelling(String chs) {
- String key, value;
- buffer = new StringBuilder();
- for (int i = 0; i < chs.length(); i++) {
- key = chs.substring(i, i + 1);
- if (key.getBytes().length >= 2) {
- value = (String) convert(key);
- if (value == null) {
- value = "unknown";
- }
- } else {
- value = key;
- }
- buffer.append(value);
- }
- return buffer.toString();
- }
- public String getSpelling() {
- return this.getSelling(this.getResource());
- }
- }
.ClearEditText類是自定義的一個在右側有刪除圖片的EditText,當然你也可以用Android原生的EditText,該類我之前有介紹,我這裡就不貼上代碼了http://www.fengfly.com/plus/view-214529-1.html
5.SortAdapter 數據的適配器類,該類需要實現SectionIndexer接口,該接口是用來控制ListView分組的,該接口有三個方法getSectionForPosition(int position),getPositionForSection(int section),getSections(),我們只需要自行實現前面兩個方法
getSectionForPosition(int position)是根據ListView的position來獲取該位置上面的name的首字母char的ascii值,例如: 如果該position上面的name是阿妹,首字母就是A,那麼此方法返回的就是'A'字母的ascii值,也就是65, 'B'是66,依次類推
getPositionForSection(int section)就是根據首字母的ascii值來獲取在該ListView中第一次出現該首字母的位置,例如:從上面的效果圖1中,如果section是65 ,也就是‘B’的ascii值,那麼該方法返回的position就是2
然後就是getView()方法,首先我們根據ListView的position調用getSectionForPosition(int position)來獲取該位置上面name的首字母的ascii值,然後根據這個ascii值調用getPositionForSection(int section)來獲取第一次出現該首字母的position,如果ListView的position 等於 根據這個ascii值調用getPositionForSection(int section)來獲取第一次出現該首字母的position,則顯示分類字母 否則隱藏
- package com.example.sortlistview;
- import java.util.List;
- import android.content.Context;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.BaseAdapter;
- import android.widget.SectionIndexer;
- import android.widget.TextView;
- public class SortAdapter extends BaseAdapter implements SectionIndexer{
- private List<SortModel> list = null;
- private Context mContext;
- public SortAdapter(Context mContext, List<SortModel> list) {
- this.mContext = mContext;
- this.list = list;
- }
- /**
- * 當ListView數據發生變化時,調用此方法來更新ListView
- * @param list
- */
- public void updateListView(List<SortModel> list){
- this.list = list;
- notifyDataSetChanged();
- }
- public int getCount() {
- return this.list.size();
- }
- public Object getItem(int position) {
- return list.get(position);
- }
- public long getItemId(int position) {
- return position;
- }
- public View getView(final int position, View view, ViewGroup arg2) {
- ViewHolder viewHolder = null;
- final SortModel mContent = list.get(position);
- if (view == null) {
- viewHolder = new ViewHolder();
- view = LayoutInflater.from(mContext).inflate(R.layout.item, null);
- viewHolder.tvTitle = (TextView) view.findViewById(R.id.title);
- viewHolder.tvLetter = (TextView) view.findViewById(R.id.catalog);
- view.setTag(viewHolder);
- } else {
- viewHolder = (ViewHolder) view.getTag();
- }
- //根據position獲取分類的首字母的char ascii值
- int section = getSectionForPosition(position);
- //如果當前位置等於該分類首字母的Char的位置 ,則認為是第一次出現
- if(position == getPositionForSection(section)){
- viewHolder.tvLetter.setVisibility(View.VISIBLE);
- viewHolder.tvLetter.setText(mContent.getSortLetters());
- }else{
- viewHolder.tvLetter.setVisibility(View.GONE);
- }
- viewHolder.tvTitle.setText(this.list.get(position).getName());
- return view;
- }
- final static class ViewHolder {
- TextView tvLetter;
- TextView tvTitle;
- }
- /**
- * 根據ListView的當前位置獲取分類的首字母的char ascii值
- */
- public int getSectionForPosition(int position) {
- return list.get(position).getSortLetters().charAt(0);
- }
- /**
- * 根據分類的首字母的Char ascii值獲取其第一次出現該首字母的位置
- */
- public int getPositionForSection(int section) {
- for (int i = 0; i < getCount(); i++) {
- String sortStr = list.get(i).getSortLetters();
- char firstChar = sortStr.toUpperCase().charAt(0);
- if (firstChar == section) {
- return i;
- }
- }
- return -1;
- }
- @Override
- public Object[] getSections() {
- return null;
- }
- }
6.MainActivity 這裡面的代碼比較簡單,我們對ClearEditText設置addTextChangedListener監聽,當輸入框內容發生變化根據裡面的值過濾ListView,裡面的值為空顯示原來的列表,裡面對列表數據進行排序用到PinyinComparator接口,該接口主要是用來比較對象的
- package com.example.sortlistview;
- import java.util.ArrayList;
- import java.util.Collections;
- import java.util.List;
- import android.app.Activity;
- import android.os.Bundle;
- import android.text.Editable;
- import android.text.TextUtils;
- import android.text.TextWatcher;
- import android.view.View;
- import android.widget.AdapterView;
- import android.widget.AdapterView.OnItemClickListener;
- import android.widget.ListView;
- import android.widget.TextView;
- import android.widget.Toast;
- import com.example.sortlistview.SideBar.OnTouchingLetterChangedListener;
- public class MainActivity extends Activity {
- private ListView sortListView;
- private SideBar sideBar;
- /**
- * 顯示字母的TextView
- */
- private TextView dialog;
- private SortAdapter adapter;
- private ClearEditText mClearEditText;
- /**
- * 漢字轉換成拼音的類
- */
- private CharacterParser characterParser;
- private List<SortModel> SourceDateList;
- /**
- * 根據拼音來排列ListView裡面的數據類
- */
- private PinyinComparator pinyinComparator;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- initViews();
- }
- private void initViews() {
- //實例化漢字轉拼音類
- characterParser = CharacterParser.getInstance();
- pinyinComparator = new PinyinComparator();
- sideBar = (SideBar) findViewById(R.id.sidrbar);
- dialog = (TextView) findViewById(R.id.dialog);
- sideBar.setTextView(dialog);
- //設置右側觸摸監聽
- sideBar.setOnTouchingLetterChangedListener(new OnTouchingLetterChangedListener() {
- @Override
- public void onTouchingLetterChanged(String s) {
- //該字母首次出現的位置
- int position = adapter.getPositionForSection(s.charAt(0));
- if(position != -1){
- sortListView.setSelection(position);
- }
- }
- });
- sortListView = (ListView) findViewById(R.id.country_lvcountry);
- sortListView.setOnItemClickListener(new OnItemClickListener() {
- @Override
- public void onItemClick(AdapterView<?> parent, View view,
- int position, long id) {
- //這裡要利用adapter.getItem(position)來獲取當前position所對應的對象
- Toast.makeText(getApplication(), ((SortModel)adapter.getItem(position)).getName(), Toast.LENGTH_SHORT).show();
- }
- });
- SourceDateList = filledData(getResources().getStringArray(R.array.date));
- // 根據a-z進行排序源數據
- Collections.sort(SourceDateList, pinyinComparator);
- adapter = new SortAdapter(this, SourceDateList);
- sortListView.setAdapter(adapter);
- mClearEditText = (ClearEditText) findViewById(R.id.filter_edit);
- //根據輸入框輸入值的改變來過濾搜索
- mClearEditText.addTextChangedListener(new TextWatcher() {
- @Override
- public void onTextChanged(CharSequence s, int start, int before, int count) {
- //當輸入框裡面的值為空,更新為原來的列表,否則為過濾數據列表
- filterData(s.toString());
- }
- @Override
- public void beforeTextChanged(CharSequence s, int start, int count,
- int after) {
- }
- @Override
- public void afterTextChanged(Editable s) {
- }
- });
- }
- /**
- * 為ListView填充數據
- * @param date
- * @return
- */
- private List<SortModel> filledData(String [] date){
- List<SortModel> mSortList = new ArrayList<SortModel>();
- for(int i=0; i<date.length; i++){
- SortModel sortModel = new SortModel();
- sortModel.setName(date[i]);
- //漢字轉換成拼音
- String pinyin = characterParser.getSelling(date[i]);
- String sortString = pinyin.substring(0, 1).toUpperCase();
- // 正則表達式,判斷首字母是否是英文字母
- if(sortString.matches("[A-Z]")){
- sortModel.setSortLetters(sortString.toUpperCase());
- }else{
- sortModel.setSortLetters("#");
- }
- mSortList.add(sortModel);
- }
- return mSortList;
- }
- /**
- * 根據輸入框中的值來過濾數據並更新ListView
- * @param filterStr
- */
- private void filterData(String filterStr) {
- List<SortModel> filterDateList = new ArrayList<SortModel>();
- if (TextUtils.isEmpty(filterStr)) {
- filterDateList = SourceDateList;
- } else {
- filterDateList.clear();
- for (SortModel sortModel : SourceDateList) {
- String name = sortModel.getName();
- if (name.toUpperCase().indexOf(
- filterStr.toString().toUpperCase()) != -1
- || characterParser.getSelling(name).toUpperCase()
- .startsWith(filterStr.toString().toUpperCase())) {
- filterDateList.add(sortModel);
- }
- }
- }
- // 根據a-z進行排序
- Collections.sort(filterDateList, pinyinComparator);
- adapter.updateListView(filterDateList);
- }
- }
7.PinyinComparator接口用來對ListView中的數據根據A-Z進行排序,前面兩個if判斷主要是將不是以漢字開頭的數據放在後面
- package com.example.sortlistview;
- import java.util.Comparator;
- /**
- *
- * @author xiaanming
- *
- */
- public class PinyinComparator implements Comparator<SortModel> {
- public int compare(SortModel o1, SortModel o2) {
- //這裡主要是用來對ListView裡面的數據根據ABCDEFG...來排序
- if (o2.getSortLetters().equals("#")) {
- return -1;
- } else if (o1.getSortLetters().equals("#")) {
- return 1;
- } else {
- return o1.getSortLetters().compareTo(o2.getSortLetters());
- }
- }
- }
這樣我們以後使用A-Z排序就沒要局限性了,想加這個效果隨時都行,其他的布局和圖片之類的文件就不貼出來了,如果大家有興趣的自行去下載代碼吧!
源碼下載
轉自:http://blog. csdn. net/ xiaanming/ article/details/12684155
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