Android 实现ListView的A-Z字母排序和过滤搜索功能，实现汉字转成拼音

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转载请注明出处：http://blog.csdn.net/xiaanming/article/details/12684155

前段时间因为换工作的缘故又恰巧碰到国庆节，所以有段时间自己没有更新博客了，过完国庆到新公司报道，感觉还不错，就是现在住的地方离新公司有点远，地铁20站，伤不起啊，我每天早上7点多就要起床，然后屁颠屁颠的去挤地铁上班，晚上下班还要挤地铁，先不说路程远，车费一天就要10几块，我的银子啊，有坐龙华线去上班的深圳程序员不？听说那条线上班高峰期很挤？我没在上班高峰期坐过那趟车，我在民治那边找了个房子，离华强北也不远，关键房租便宜，哈哈，乐开花了，下个礼拜就要搬过去啦

不扯了，回到主题，今天给大家带来ListView的A-Z字母排序和过滤搜索功能并且实现汉字转成拼音的功能，我们知道一般我们对联系人，城市列表等实现A-Z的排序，因为联系人和城市列表我们可以直接从数据库中获取他的汉字拼音，而对于一般的数据，我们怎么实现A-Z的排序，我们需要将汉字转换成拼音就行了，接下来就带大家实现一般数据的A-Z排序功能，首先先看下效果图

上面是一个带删除按钮的EditText，我们在输入框中输入可以自动过滤出我们想要的东西，当输入框中没有数据自动替换到原来的数据列表，然后下面一个ListView用来显示数据列表，右侧是一个字母索引表，当我们点击不同的字母,ListView会定位到该字母地方，了解了布局之后，我们先看下项目结构吧

我按照项目中类的顺序来一一介绍其功能

1.SortModel 一个实体类，里面一个是ListView的name,另一个就是显示的name拼音的首字母

[java] view plain copy

package com.example.sortlistview;
public class SortModel {
private String name; //显示的数据
private String sortLetters; //显示数据拼音的首字母
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类就是ListView右侧的字母索引View，我们需要使用setTextView(TextView mTextDialog)来设置用来显示当前按下的字母的TextView,以及使用setOnTouchingLetterChangedListener方法来设置回调接口，在回调方法onTouchingLetterChanged(String s)中来处理不同的操作

[java] view plain copy

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 {
// 触摸事件
private OnTouchingLetterChangedListener onTouchingLetterChangedListener;
// 26个字母
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;// 选中
private Paint paint = new Paint();
private TextView mTextDialog;
/**
* 为SideBar设置显示字母的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);
}
/**
* 重写这个方法
*/
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// 获取焦点改变背景颜色.
int height = getHeight();// 获取对应高度
int width = getWidth(); // 获取对应宽度
int singleHeight = height / b.length;// 获取每一个字母的高度
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);
// 选中的状态
if (i == choose) {
paint.setColor(Color.parseColor(“#3399ff”));
paint.setFakeBoldText(true);
}
// x坐标等于中间-字符串宽度的一半.
float xPos = width / 2 – paint.measureText(b[i]) / 2;
float yPos = singleHeight * i + singleHeight;
canvas.drawText(b[i], xPos, yPos, paint);
paint.reset();// 重置画笔
}
}
@Override
public boolean dispatchTouchEvent(MotionEvent event) {
final int action = event.getAction();
final float y = event.getY();// 点击y坐标
final int oldChoose = choose;
final OnTouchingLetterChangedListener listener = onTouchingLetterChangedListener;
final int c = (int) (y / getHeight() * b.length);// 点击y坐标所占总高度的比例*b数组的长度就等于点击b中的个数.
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;
}
/**
* 向外公开的方法
*
* @param onTouchingLetterChangedListener
*/
public void setOnTouchingLetterChangedListener(
OnTouchingLetterChangedListener onTouchingLetterChangedListener) {
this.onTouchingLetterChangedListener = onTouchingLetterChangedListener;
}
/**
* 接口
*
* @author coder
*
*/
public interface OnTouchingLetterChangedListener {
public void onTouchingLetterChanged(String s);
}
}

3.CharacterParser 这个类是将汉字转换成拼音的类，该拼音没有声调的，该类是单例类，其中定义了三个方法，在这个demo中用到的是getSelling(String chs)方法，将词组转换成拼音

[java] view plain copy

package com.example.sortlistview;
/**
* Java汉字转换为拼音
*
*/
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;
}
/** * 汉字转成ASCII码 * * @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;
}
/** * 单字解析 * * @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;
}
/** * 词组解析 * * @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());
}
}

4.ClearEditText类是自定义的一个在右侧有删除图片的EditText，当然你也可以用Android原生的EditText，该类我之前有介绍，我这里就不贴上代码了Android 带清除功能的输入框控件ClearEditText,仿IOS的输入框

5.SortAdapter 数据的适配器类，该类需要实现SectionIndexer接口，该接口是用来控制ListView分组的，该接口有三个方法getSectionForPosition(int position)，getPositionForSection(int section)，getSections()，我们只需要自行实现前面两个方法

getSectionForPosition(int position)是根据ListView的position来获取该位置上面的name的首字母char的ascii值，例如：如果该position上面的name是阿妹，首字母就是A，那么此方法返回的就是’A’字母的ascii值，也就是65， ‘B’是66，依次类推
getPositionForSection(int section)就是根据首字母的ascii值来获取在该ListView中第一次出现该首字母的位置，例如：从上面的效果图1中，如果section是66 ，也就是‘B’的ascii值，那么该方法返回的position就是2

然后就是getView()方法，首先我们根据ListView的position调用getSectionForPosition(int position)来获取该位置上面name的首字母的ascii值,然后根据这个ascii值调用getPositionForSection(int section)来获取第一次出现该首字母的position，如果ListView的position 等于根据这个ascii值调用getPositionForSection(int section)来获取第一次出现该首字母的position，则显示分类字母否则隐藏

[java] view plain copy

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;
}
/**
* 当ListView数据发生变化时,调用此方法来更新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();
}
//根据position获取分类的首字母的char ascii值
int section = getSectionForPosition(position);
//如果当前位置等于该分类首字母的Char的位置，则认为是第一次出现
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;
}
/**
* 根据ListView的当前位置获取分类的首字母的char ascii值
*/
public int getSectionForPosition(int position) {
return list.get(position).getSortLetters().charAt(0);
}
/**
* 根据分类的首字母的Char ascii值获取其第一次出现该首字母的位置
*/
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 这里面的代码比较简单，我们对ClearEditText设置addTextChangedListener监听，当输入框内容发生变化根据里面的值过滤ListView，里面的值为空显示原来的列表，里面对列表数据进行排序用到PinyinComparator接口，该接口主要是用来比较对象的

[java] view plain copy

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;
/**
* 显示字母的TextView
*/
private TextView dialog;
private SortAdapter adapter;
private ClearEditText mClearEditText;
/**
* 汉字转换成拼音的类
*/
private CharacterParser characterParser;
private List<SortModel> SourceDateList;
/**
* 根据拼音来排列ListView里面的数据类
*/
private PinyinComparator pinyinComparator;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initViews();
}
private void initViews() {
//实例化汉字转拼音类
characterParser = CharacterParser.getInstance();
pinyinComparator = new PinyinComparator();
sideBar = (SideBar) findViewById(R.id.sidrbar);
dialog = (TextView) findViewById(R.id.dialog);
sideBar.setTextView(dialog);
//设置右侧触摸监听
sideBar.setOnTouchingLetterChangedListener(new OnTouchingLetterChangedListener() {
@Override
public void onTouchingLetterChanged(String s) {
//该字母首次出现的位置
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) {
//这里要利用adapter.getItem(position)来获取当前position所对应的对象
Toast.makeText(getApplication(), ((SortModel)adapter.getItem(position)).getName(), Toast.LENGTH_SHORT).show();
}
});
SourceDateList = filledData(getResources().getStringArray(R.array.date));
// 根据a-z进行排序源数据
Collections.sort(SourceDateList, pinyinComparator);
adapter = new SortAdapter(this, SourceDateList);
sortListView.setAdapter(adapter);
mClearEditText = (ClearEditText) findViewById(R.id.filter_edit);
//根据输入框输入值的改变来过滤搜索
mClearEditText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
//当输入框里面的值为空，更新为原来的列表，否则为过滤数据列表
filterData(s.toString());
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
/**
* 为ListView填充数据
* @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]);
//汉字转换成拼音
String pinyin = characterParser.getSelling(date[i]);
String sortString = pinyin.substring(0, 1).toUpperCase();
// 正则表达式，判断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;
}
/**
* 根据输入框中的值来过滤数据并更新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);
}
}
}
// 根据a-z进行排序
Collections.sort(filterDateList, pinyinComparator);
adapter.updateListView(filterDateList);
}
}

7.PinyinComparator接口用来对ListView中的数据根据A-Z进行排序，前面两个if判断主要是将不是以汉字开头的数据放在后面

[java] view plain copy

package com.example.sortlistview;
import java.util.Comparator;
/**
*
* @author xiaanming
*
*/
public class PinyinComparator implements Comparator<SortModel> {
public int compare(SortModel o1, SortModel o2) {
//这里主要是用来对ListView里面的数据根据ABCDEFG…来排序
if (o2.getSortLetters().equals(“#”)) {
return –1;
} else if (o1.getSortLetters().equals(“#”)) {
return 1;
} else {
return o1.getSortLetters().compareTo(o2.getSortLetters());
}
}
}

这样我们以后使用A-Z排序就没要局限性了，想加这个效果随时都行，其他的布局和图片之类的文件就不贴出来了，如果大家有兴趣的自行去下载代码吧，如果大家有什么疑问，请在下面留言，我会为大家解答的！

项目源码，点击下载

github地址：https://github.com/xiaanming/A-Z-SortListView

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Android / 移动互联网 · 2014年6月10日 0

Android 实现ListView的A-Z字母排序和过滤搜索功能，实现汉字转成拼音

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