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

直入主题，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

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

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

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

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

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

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