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 .

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

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

  1 package com.example.sortlistview;
  2 
  3 import android.content.Context;
  4 import android.graphics.Canvas;
  5 import android.graphics.Color;
  6 import android.graphics.Paint;
  7 import android.graphics.Typeface;
  8 import android.graphics.drawable.ColorDrawable;
  9 import android.util.AttributeSet;
 10 import android.view.MotionEvent;
 11 import android.view.View;
 12 import android.widget.TextView;
 13 
 14 public class SideBar extends View {
 15     // 触摸事件
 16     private OnTouchingLetterChangedListener onTouchingLetterChangedListener;
 17     // 26个字母
 18     public static String[] b = { "A", "B", "C", "D", "E", "F", "G", "H", "I",
 19             "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V",
 20             "W", "X", "Y", "Z", "#" };
 21     private int choose = -1;// 选中
 22     private Paint paint = new Paint();
 23 
 24     private TextView mTextDialog;
 25 
 26     /**
 27      * 为SideBar设置显示字母的TextView
 28      * @param mTextDialog
 29      */
 30     public void setTextView(TextView mTextDialog) {
 31         this.mTextDialog = mTextDialog;
 32     }
 33 
 34 
 35     public SideBar(Context context, AttributeSet attrs, int defStyle) {
 36         super(context, attrs, defStyle);
 37     }
 38 
 39     public SideBar(Context context, AttributeSet attrs) {
 40         super(context, attrs);
 41     }
 42 
 43     public SideBar(Context context) {
 44         super(context);
 45     }
 46 
 47     /**
 48      * 重写这个方法
 49      */
 50     protected void onDraw(Canvas canvas) {
 51         super.onDraw(canvas);
 52         // 获取焦点改变背景颜色.
 53         int height = getHeight();// 获取对应高度
 54         int width = getWidth(); // 获取对应宽度
 55         int singleHeight = height / b.length;// 获取每一个字母的高度
 56 
 57         for (int i = 0; i < b.length; i++) {
 58             paint.setColor(Color.rgb(33, 65, 98));
 59             // paint.setColor(Color.WHITE);
 60             paint.setTypeface(Typeface.DEFAULT_BOLD);
 61             paint.setAntiAlias(true);
 62             paint.setTextSize(20);
 63             // 选中的状态
 64             if (i == choose) {
 65                 paint.setColor(Color.parseColor("#3399ff"));
 66                 paint.setFakeBoldText(true);
 67             }
 68             // x坐标等于中间-字符串宽度的一半.
 69             float xPos = width / 2 - paint.measureText(b[i]) / 2;
 70             float yPos = singleHeight * i + singleHeight;
 71             canvas.drawText(b[i], xPos, yPos, paint);
 72             paint.reset();// 重置画笔
 73         }
 74 
 75     }
 76 
 77     @Override
 78     public boolean dispatchTouchEvent(MotionEvent event) {
 79         final int action = event.getAction();
 80         final float y = event.getY();// 点击y坐标
 81         final int oldChoose = choose;
 82         final OnTouchingLetterChangedListener listener = onTouchingLetterChangedListener;
 83         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.
 84 
 85         switch (action) {
 86         case MotionEvent.ACTION_UP:
 87             setBackgroundDrawable(new ColorDrawable(0x00000000));
 88             choose = -1;//
 89             invalidate();
 90             if (mTextDialog != null) {
 91                 mTextDialog.setVisibility(View.INVISIBLE);
 92             }
 93             break;
 94 
 95         default:
 96             setBackgroundResource(R.drawable.sidebar_background);
 97             if (oldChoose != c) {
 98                 if (c >= 0 && c < b.length) {
 99                     if (listener != null) {
100                         listener.onTouchingLetterChanged(b[c]);
101                     }
102                     if (mTextDialog != null) {
103                         mTextDialog.setText(b[c]);
104                         mTextDialog.setVisibility(View.VISIBLE);
105                     }
106                     
107                     choose = c;
108                     invalidate();
109                 }
110             }
111 
112             break;
113         }
114         return true;
115     }
116 
117     /**
118      * 向外公开的方法
119      * 
120      * @param onTouchingLetterChangedListener
121      */
122     public void setOnTouchingLetterChangedListener(
123             OnTouchingLetterChangedListener onTouchingLetterChangedListener) {
124         this.onTouchingLetterChangedListener = onTouchingLetterChangedListener;
125     }
126 
127     /**
128      * 接口
129      * 
130      * @author coder
131      * 
132      */
133     public interface OnTouchingLetterChangedListener {
134         public void onTouchingLetterChanged(String s);
135     }
136 
137 }

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。

  1 package com.example.sortlistview;
  2 
  3 /**
  4  * Java汉字转换为拼音
  5  * 
  6  */
  7 public class CharacterParser {
  8     private static int[] pyvalue = new int[] {-20319, -20317, -20304, -20295, -20292, -20283, -20265, -20257, -20242, -20230, -20051, -20036, -20032,
  9             -20026, -20002, -19990, -19986, -19982, -19976, -19805, -19784, -19775, -19774, -19763, -19756, -19751, -19746, -19741, -19739, -19728,
 10             -19725, -19715, -19540, -19531, -19525, -19515, -19500, -19484, -19479, -19467, -19289, -19288, -19281, -19275, -19270, -19263, -19261,
 11             -19249, -19243, -19242, -19238, -19235, -19227, -19224, -19218, -19212, -19038, -19023, -19018, -19006, -19003, -18996, -18977, -18961,
 12             -18952, -18783, -18774, -18773, -18763, -18756, -18741, -18735, -18731, -18722, -18710, -18697, -18696, -18526, -18518, -18501, -18490,
 13             -18478, -18463, -18448, -18447, -18446, -18239, -18237, -18231, -18220, -18211, -18201, -18184, -18183, -18181, -18012, -17997, -17988,
 14             -17970, -17964, -17961, -17950, -17947, -17931, -17928, -17922, -17759, -17752, -17733, -17730, -17721, -17703, -17701, -17697, -17692,
 15             -17683, -17676, -17496, -17487, -17482, -17468, -17454, -17433, -17427, -17417, -17202, -17185, -16983, -16970, -16942, -16915, -16733,
 16             -16708, -16706, -16689, -16664, -16657, -16647, -16474, -16470, -16465, -16459, -16452, -16448, -16433, -16429, -16427, -16423, -16419,
 17             -16412, -16407, -16403, -16401, -16393, -16220, -16216, -16212, -16205, -16202, -16187, -16180, -16171, -16169, -16158, -16155, -15959,
 18             -15958, -15944, -15933, -15920, -15915, -15903, -15889, -15878, -15707, -15701, -15681, -15667, -15661, -15659, -15652, -15640, -15631,
 19             -15625, -15454, -15448, -15436, -15435, -15419, -15416, -15408, -15394, -15385, -15377, -15375, -15369, -15363, -15362, -15183, -15180,
 20             -15165, -15158, -15153, -15150, -15149, -15144, -15143, -15141, -15140, -15139, -15128, -15121, -15119, -15117, -15110, -15109, -14941,
 21             -14937, -14933, -14930, -14929, -14928, -14926, -14922, -14921, -14914, -14908, -14902, -14894, -14889, -14882, -14873, -14871, -14857,
 22             -14678, -14674, -14670, -14668, -14663, -14654, -14645, -14630, -14594, -14429, -14407, -14399, -14384, -14379, -14368, -14355, -14353,
 23             -14345, -14170, -14159, -14151, -14149, -14145, -14140, -14137, -14135, -14125, -14123, -14122, -14112, -14109, -14099, -14097, -14094,
 24             -14092, -14090, -14087, -14083, -13917, -13914, -13910, -13907, -13906, -13905, -13896, -13894, -13878, -13870, -13859, -13847, -13831,
 25             -13658, -13611, -13601, -13406, -13404, -13400, -13398, -13395, -13391, -13387, -13383, -13367, -13359, -13356, -13343, -13340, -13329,
 26             -13326, -13318, -13147, -13138, -13120, -13107, -13096, -13095, -13091, -13076, -13068, -13063, -13060, -12888, -12875, -12871, -12860,
 27             -12858, -12852, -12849, -12838, -12831, -12829, -12812, -12802, -12607, -12597, -12594, -12585, -12556, -12359, -12346, -12320, -12300,
 28             -12120, -12099, -12089, -12074, -12067, -12058, -12039, -11867, -11861, -11847, -11831, -11798, -11781, -11604, -11589, -11536, -11358,
 29             -11340, -11339, -11324, -11303, -11097, -11077, -11067, -11055, -11052, -11045, -11041, -11038, -11024, -11020, -11019, -11018, -11014,
 30             -10838, -10832, -10815, -10800, -10790, -10780, -10764, -10587, -10544, -10533, -10519, -10331, -10329, -10328, -10322, -10315, -10309,
 31             -10307, -10296, -10281, -10274, -10270, -10262, -10260, -10256, -10254};
 32     public static String[] pystr = new String[] {"a", "ai", "an", "ang", "ao", "ba", "bai", "ban", "bang", "bao", "bei", "ben", "beng", "bi", "bian",
 33             "biao", "bie", "bin", "bing", "bo", "bu", "ca", "cai", "can", "cang", "cao", "ce", "ceng", "cha", "chai", "chan", "chang", "chao", "che",
 34             "chen", "cheng", "chi", "chong", "chou", "chu", "chuai", "chuan", "chuang", "chui", "chun", "chuo", "ci", "cong", "cou", "cu", "cuan",
 35             "cui", "cun", "cuo", "da", "dai", "dan", "dang", "dao", "de", "deng", "di", "dian", "diao", "die", "ding", "diu", "dong", "dou", "du",
 36             "duan", "dui", "dun", "duo", "e", "en", "er", "fa", "fan", "fang", "fei", "fen", "feng", "fo", "fou", "fu", "ga", "gai", "gan", "gang",
 37             "gao", "ge", "gei", "gen", "geng", "gong", "gou", "gu", "gua", "guai", "guan", "guang", "gui", "gun", "guo", "ha", "hai", "han", "hang",
 38             "hao", "he", "hei", "hen", "heng", "hong", "hou", "hu", "hua", "huai", "huan", "huang", "hui", "hun", "huo", "ji", "jia", "jian",
 39             "jiang", "jiao", "jie", "jin", "jing", "jiong", "jiu", "ju", "juan", "jue", "jun", "ka", "kai", "kan", "kang", "kao", "ke", "ken",
 40             "keng", "kong", "kou", "ku", "kua", "kuai", "kuan", "kuang", "kui", "kun", "kuo", "la", "lai", "lan", "lang", "lao", "le", "lei", "leng",
 41             "li", "lia", "lian", "liang", "liao", "lie", "lin", "ling", "liu", "long", "lou", "lu", "lv", "luan", "lue", "lun", "luo", "ma", "mai",
 42             "man", "mang", "mao", "me", "mei", "men", "meng", "mi", "mian", "miao", "mie", "min", "ming", "miu", "mo", "mou", "mu", "na", "nai",
 43             "nan", "nang", "nao", "ne", "nei", "nen", "neng", "ni", "nian", "niang", "niao", "nie", "nin", "ning", "niu", "nong", "nu", "nv", "nuan",
 44             "nue", "nuo", "o", "ou", "pa", "pai", "pan", "pang", "pao", "pei", "pen", "peng", "pi", "pian", "piao", "pie", "pin", "ping", "po", "pu",
 45             "qi", "qia", "qian", "qiang", "qiao", "qie", "qin", "qing", "qiong", "qiu", "qu", "quan", "que", "qun", "ran", "rang", "rao", "re",
 46             "ren", "reng", "ri", "rong", "rou", "ru", "ruan", "rui", "run", "ruo", "sa", "sai", "san", "sang", "sao", "se", "sen", "seng", "sha",
 47             "shai", "shan", "shang", "shao", "she", "shen", "sheng", "shi", "shou", "shu", "shua", "shuai", "shuan", "shuang", "shui", "shun",
 48             "shuo", "si", "song", "sou", "su", "suan", "sui", "sun", "suo", "ta", "tai", "tan", "tang", "tao", "te", "teng", "ti", "tian", "tiao",
 49             "tie", "ting", "tong", "tou", "tu", "tuan", "tui", "tun", "tuo", "wa", "wai", "wan", "wang", "wei", "wen", "weng", "wo", "wu", "xi",
 50             "xia", "xian", "xiang", "xiao", "xie", "xin", "xing", "xiong", "xiu", "xu", "xuan", "xue", "xun", "ya", "yan", "yang", "yao", "ye", "yi",
 51             "yin", "ying", "yo", "yong", "you", "yu", "yuan", "yue", "yun", "za", "zai", "zan", "zang", "zao", "ze", "zei", "zen", "zeng", "zha",
 52             "zhai", "zhan", "zhang", "zhao", "zhe", "zhen", "zheng", "zhi", "zhong", "zhou", "zhu", "zhua", "zhuai", "zhuan", "zhuang", "zhui",
 53             "zhun", "zhuo", "zi", "zong", "zou", "zu", "zuan", "zui", "zun", "zuo"};
 54     private StringBuilder buffer;
 55     private String resource;
 56     private static CharacterParser characterParser = new CharacterParser();
 57 
 58     public static CharacterParser getInstance() {
 59         return characterParser;
 60     }
 61 
 62     public String getResource() {
 63         return resource;
 64     }
 65 
 66     public void setResource(String resource) {
 67         this.resource = resource;
 68     }
 69 
 70     /** * 汉字转成ASCII码 * * @param chs * @return */
 71     private int getChsAscii(String chs) {
 72         int asc = 0;
 73         try {
 74             byte[] bytes = chs.getBytes("gb2312");
 75             if (bytes == null || bytes.length > 2 || bytes.length <= 0) {
 76                 throw new RuntimeException("illegal resource string");
 77             }
 78             if (bytes.length == 1) {
 79                 asc = bytes[0];
 80             }
 81             if (bytes.length == 2) {
 82                 int hightByte = 256 + bytes[0];
 83                 int lowByte = 256 + bytes[1];
 84                 asc = (256 * hightByte + lowByte) - 256 * 256;
 85             }
 86         } catch (Exception e) {
 87             System.out.println("ERROR:ChineseSpelling.class-getChsAscii(String chs)" + e);
 88         }
 89         return asc;
 90     }
 91 
 92     /** * 单字解析 * * @param str * @return */
 93     public String convert(String str) {
 94         String result = null;
 95         int ascii = getChsAscii(str);
 96         if (ascii > 0 && ascii < 160) {
 97             result = String.valueOf((char) ascii);
 98         } else {
 99             for (int i = (pyvalue.length - 1); i >= 0; i--) {
100                 if (pyvalue[i] <= ascii) {
101                     result = pystr[i];
102                     break;
103                 }
104             }
105         }
106         return result;
107     }
108 
109     /** * 词组解析 * * @param chs * @return */
110     public String getSelling(String chs) {
111         String key, value;
112         buffer = new StringBuilder();
113         for (int i = 0; i < chs.length(); i++) {
114             key = chs.substring(i, i + 1);
115             if (key.getBytes().length >= 2) {
116                 value = (String) convert(key);
117                 if (value == null) {
118                     value = "unknown";
119                 }
120             } else {
121                 value = key;
122             }
123             buffer.append(value);
124         }
125         return buffer.toString();
126     }
127 
128     public String getSpelling() {
129         return this.getSelling(this.getResource());
130     }
131 
132 }

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65 ，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。

  1 package com.example.sortlistview;
  2 
  3 import java.util.List;
  4 
  5 import android.content.Context;
  6 import android.view.LayoutInflater;
  7 import android.view.View;
  8 import android.view.ViewGroup;
  9 import android.widget.BaseAdapter;
 10 import android.widget.SectionIndexer;
 11 import android.widget.TextView;
 12 
 13 public class SortAdapter extends BaseAdapter implements SectionIndexer{
 14     private List<SortModel> list = null;
 15     private Context mContext;
 16     
 17     public SortAdapter(Context mContext, List<SortModel> list) {
 18         this.mContext = mContext;
 19         this.list = list;
 20     }
 21     
 22     /**
 23      * 当ListView数据发生变化时,调用此方法来更新ListView
 24      * @param list
 25      */
 26     public void updateListView(List<SortModel> list){
 27         this.list = list;
 28         notifyDataSetChanged();
 29     }
 30 
 31     public int getCount() {
 32         return this.list.size();
 33     }
 34 
 35     public Object getItem(int position) {
 36         return list.get(position);
 37     }
 38 
 39     public long getItemId(int position) {
 40         return position;
 41     }
 42 
 43     public View getView(final int position, View view, ViewGroup arg2) {
 44         ViewHolder viewHolder = null;
 45         final SortModel mContent = list.get(position);
 46         if (view == null) {
 47             viewHolder = new ViewHolder();
 48             view = LayoutInflater.from(mContext).inflate(R.layout.item, null);
 49             viewHolder.tvTitle = (TextView) view.findViewById(R.id.title);
 50             viewHolder.tvLetter = (TextView) view.findViewById(R.id.catalog);
 51             view.setTag(viewHolder);
 52         } else {
 53             viewHolder = (ViewHolder) view.getTag();
 54         }
 55         
 56         //根据position获取分类的首字母的char ascii值
 57         int section = getSectionForPosition(position);
 58         
 59         //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
 60         if(position == getPositionForSection(section)){
 61             viewHolder.tvLetter.setVisibility(View.VISIBLE);
 62             viewHolder.tvLetter.setText(mContent.getSortLetters());
 63         }else{
 64             viewHolder.tvLetter.setVisibility(View.GONE);
 65         }
 66     
 67         viewHolder.tvTitle.setText(this.list.get(position).getName());
 68         
 69         return view;
 70 
 71     }
 72     
 73 
 74 
 75     final static class ViewHolder {
 76         TextView tvLetter;
 77         TextView tvTitle;
 78     }
 79 
 80 
 81     /**
 82      * 根据ListView的当前位置获取分类的首字母的char ascii值
 83      */
 84     public int getSectionForPosition(int position) {
 85         return list.get(position).getSortLetters().charAt(0);
 86     }
 87 
 88     /**
 89      * 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
 90      */
 91     public int getPositionForSection(int section) {
 92         for (int i = 0; i < getCount(); i++) {
 93             String sortStr = list.get(i).getSortLetters();
 94             char firstChar = sortStr.toUpperCase().charAt(0);
 95             if (firstChar == section) {
 96                 return i;
 97             }
 98         }
 99         
100         return -1;
101     }
102     
103 
104     @Override
105     public Object[] getSections() {
106         return null;
107     }
108 }

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。

  1 package com.example.sortlistview;
  2 
  3 import java.util.ArrayList;
  4 import java.util.Collections;
  5 import java.util.List;
  6 
  7 import android.app.Activity;
  8 import android.os.Bundle;
  9 import android.text.Editable;
 10 import android.text.TextUtils;
 11 import android.text.TextWatcher;
 12 import android.view.View;
 13 import android.widget.AdapterView;
 14 import android.widget.AdapterView.OnItemClickListener;
 15 import android.widget.ListView;
 16 import android.widget.TextView;
 17 import android.widget.Toast;
 18 
 19 import com.example.sortlistview.SideBar.OnTouchingLetterChangedListener;
 20 
 21 public class MainActivity extends Activity {
 22     private ListView sortListView;
 23     private SideBar sideBar;
 24     /**
 25      * 显示字母的TextView
 26      */
 27     private TextView dialog;
 28     private SortAdapter adapter;
 29     private ClearEditText mClearEditText;
 30     
 31     /**
 32      * 汉字转换成拼音的类
 33      */
 34     private CharacterParser characterParser;
 35     private List<SortModel> SourceDateList;
 36     
 37     /**
 38      * 根据拼音来排列ListView里面的数据类
 39      */
 40     private PinyinComparator pinyinComparator;
 41 
 42     @Override
 43     protected void onCreate(Bundle savedInstanceState) {
 44         super.onCreate(savedInstanceState);
 45         setContentView(R.layout.activity_main);
 46         initViews();
 47     }
 48 
 49     private void initViews() {
 50         //实例化汉字转拼音类
 51         characterParser = CharacterParser.getInstance();
 52         
 53         pinyinComparator = new PinyinComparator();
 54         
 55         sideBar = (SideBar) findViewById(R.id.sidrbar);
 56         dialog = (TextView) findViewById(R.id.dialog);
 57         sideBar.setTextView(dialog);
 58         
 59         //设置右侧触摸监听
 60         sideBar.setOnTouchingLetterChangedListener(new OnTouchingLetterChangedListener() {
 61             
 62             @Override
 63             public void onTouchingLetterChanged(String s) {
 64                 //该字母首次出现的位置
 65                 int position = adapter.getPositionForSection(s.charAt(0));
 66                 if(position != -1){
 67                     sortListView.setSelection(position);
 68                 }
 69                 
 70             }
 71         });
 72         
 73         sortListView = (ListView) findViewById(R.id.country_lvcountry);
 74         sortListView.setOnItemClickListener(new OnItemClickListener() {
 75 
 76             @Override
 77             public void onItemClick(AdapterView<?> parent, View view,
 78                     int position, long id) {
 79                 //这里要利用adapter.getItem(position)来获取当前position所对应的对象
 80                 Toast.makeText(getApplication(), ((SortModel)adapter.getItem(position)).getName(), Toast.LENGTH_SHORT).show();
 81             }
 82         });
 83         
 84         SourceDateList = filledData(getResources().getStringArray(R.array.date));
 85         
 86         // 根据a-z进行排序源数据
 87         Collections.sort(SourceDateList, pinyinComparator);
 88         adapter = new SortAdapter(this, SourceDateList);
 89         sortListView.setAdapter(adapter);
 90         
 91         
 92         mClearEditText = (ClearEditText) findViewById(R.id.filter_edit);
 93         
 94         //根据输入框输入值的改变来过滤搜索
 95         mClearEditText.addTextChangedListener(new TextWatcher() {
 96             
 97             @Override
 98             public void onTextChanged(CharSequence s, int start, int before, int count) {
 99                 //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
100                 filterData(s.toString());
101             }
102             
103             @Override
104             public void beforeTextChanged(CharSequence s, int start, int count,
105                     int after) {
106                 
107             }
108             
109             @Override
110             public void afterTextChanged(Editable s) {
111             }
112         });
113     }
114 
115 
116     /**
117      * 为ListView填充数据
118      * @param date
119      * @return
120      */
121     private List<SortModel> filledData(String [] date){
122         List<SortModel> mSortList = new ArrayList<SortModel>();
123         
124         for(int i=0; i<date.length; i++){
125             SortModel sortModel = new SortModel();
126             sortModel.setName(date[i]);
127             //汉字转换成拼音
128             String pinyin = characterParser.getSelling(date[i]);
129             String sortString = pinyin.substring(0, 1).toUpperCase();
130             
131             // 正则表达式，判断首字母是否是英文字母
132             if(sortString.matches("[A-Z]")){
133                 sortModel.setSortLetters(sortString.toUpperCase());
134             }else{
135                 sortModel.setSortLetters("#");
136             }
137             
138             mSortList.add(sortModel);
139         }
140         return mSortList;
141         
142     }
143     
144     /**
145      * 根据输入框中的值来过滤数据并更新ListView
146      * @param filterStr
147      */
148     private void filterData(String filterStr) {
149         List<SortModel> filterDateList = new ArrayList<SortModel>();
150 
151         if (TextUtils.isEmpty(filterStr)) {
152             filterDateList = SourceDateList;
153         } else {
154             filterDateList.clear();
155             for (SortModel sortModel : SourceDateList) {
156                 String name = sortModel.getName();
157                 if (name.toUpperCase().indexOf(
158                         filterStr.toString().toUpperCase()) != -1
159                         || characterParser.getSelling(name).toUpperCase()
160                                 .startsWith(filterStr.toString().toUpperCase())) {
161                     filterDateList.add(sortModel);
162                 }
163             }
164         }
165         
166         // 根据a-z进行排序
167         Collections.sort(filterDateList, pinyinComparator);
168         adapter.updateListView(filterDateList);
169     }
170     
171 }

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。

 1 package com.example.sortlistview;
 2 
 3 import java.util.Comparator;
 4 
 5 /**
 6  * 
 7  * @author xiaanming
 8  *
 9  */
10 public class PinyinComparator implements Comparator<SortModel> {
11 
12     public int compare(SortModel o1, SortModel o2) {
13         //这里主要是用来对ListView里面的数据根据ABCDEFG...来排序
14         if (o2.getSortLetters().equals("#")) {
15             return -1;
16         } else if (o1.getSortLetters().equals("#")) {
17             return 1;
18         } else {
19             return o1.getSortLetters().compareTo(o2.getSortLetters());
20         }
21     }
22 }

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！

posted on 2014-02-27 14:38 清凉一夏之博客阅读(1501) 评论(0) 编辑收藏举报