Android 實現(xiàn)ListView的A-Z字母排序和過濾搜索功能，實現(xiàn)漢字轉(zhuǎn)成拼音

內(nèi)容來源：http://blog.csdn.net/xiaanming/article/details/12684155
本人只是根據(jù)自己的需求做了一點小改動，發(fā)文備忘。

今天給大家?guī)鞮istView的A-Z字母排序和過濾搜索功能并且實現(xiàn)漢字轉(zhuǎn)成拼音的功能，我們知道一般我們對聯(lián)系人，城市列表等實現(xiàn)A-Z的排序，因為聯(lián)系人和城市列表我們可以直接從數(shù)據(jù)庫中獲取他的漢字拼音，而對于一般的數(shù)據(jù)，我們怎么實現(xiàn)A-Z的排序，我們需要將漢字轉(zhuǎn)換成拼音就行了，接下來就帶大家實現(xiàn)一般數(shù)據(jù)的A-Z排序功能，首先先看下效果圖

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本人項目需求右邊索引字母只顯示列表有數(shù)據(jù)的對應(yīng)的字母，多音字城市排序（重慶、長沙排在C字母下面），效果圖

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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(shù)據(jù)自動替換到原來的數(shù)據(jù)列表，然后下面一個ListView用來顯示數(shù)據(jù)列表，右側(cè)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，了解了布局之后，我們先看下項目結(jié)構(gòu)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，里面一個是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(shù)據(jù)private String sortLetters; //顯示數(shù)據(jù)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(cè)的字母索引View，我們需要使用setTextView(TextView mTextDialog)來設(shè)置用來顯示當前按下的字母的TextView,以及使用setOnTouchingLetterChangedListener方法來設(shè)置回調(diào)接口，在回調(diào)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 final int mNumber=26;//常規(guī)字母總數(shù)private int choose = -1;// 選中private Paint paint = new Paint();private TextView mTextDialog;private int textColor;private int textSize;private int textSelectorColor;private int mHeightPixels;public void setTextView(TextView mTextDialog) {this.mTextDialog = mTextDialog;}public SideBar(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);getWindowInfo(context);TypedArray a = context.obtainStyledAttributes(attrs,R.styleable.SideBar);textColor = a.getColor(R.styleable.SideBar_sbTextColor, Color.BLACK);textSize = a.getDimensionPixelSize(R.styleable.SideBar_sbTextSize, 24);textSelectorColor = a.getColor(R.styleable.SideBar_sbSelectedTextColor, Color.BLACK);}public SideBar(Context context, AttributeSet attrs) {this(context, attrs, 0);getWindowInfo(context);}public SideBar(Context context) {super(context);getWindowInfo(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(yīng)高度int width = getWidth(); // 獲取對應(yīng)寬度//int singleHeight = height / b.length;// 獲取每一個字母的高度int singleHeight = height / mNumber;// 獲取每一個字母的高度for (int i = 0; i < b.length; i++) {paint.setColor(textColor);// paint.setColor(Color.WHITE);paint.setTypeface(Typeface.DEFAULT_BOLD);paint.setAntiAlias(true);paint.setTextSize(textSize);// 選中的狀態(tài)if (i == choose) {paint.setColor(textSelectorColor);paint.setFakeBoldText(true);}// x坐標等于中間-字符串寬度的一半.float xPos = width / 2 - paint.measureText(b[i]) / 2;//float yPos = singleHeight * i + singleHeight;//（整個高度/2-字母的高度*字母的數(shù)量/2）+字母的高度*第幾個+字母高度float yPos = (height/2-singleHeight*b.length/2)+singleHeight * i + singleHeight;//繪制相對于y坐標的中間canvas.drawText(b[i], xPos, yPos, paint);paint.reset();// 重置畫筆}}@Overridepublic 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(shù)組的長度就等于點擊b中的個數(shù).int height = getHeight();// 獲取對應(yīng)高度int singleHeight = height / mNumber;// 獲取每一個字母的高度// 整個屏幕像素的一半 字母集合對應(yīng)的像素高度的一半final int c = (int) ((y-mHeightPixels/2 + (mHeightPixels/mNumber*b.length/2)) / (singleHeight*b.length) * b.length);// 點擊y坐標所占總高度的比例*b數(shù)組的長度就等于點擊b中的個數(shù).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);}/*** 設(shè)置有數(shù)據(jù)對應(yīng)的字母索引，并重繪* @param b*/public void setLetter(String[] b){this.b=b;requestLayout();invalidate();}/*** 獲取設(shè)備的屏幕信息** @return*/private void getWindowInfo(Context context) {// DisplayMetrics類用于屏幕的描述信息DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();// 獲取屏幕像素高度 pxint height = displayMetrics.heightPixels;//獲取狀態(tài)欄高度int result = 0;int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");if (resourceId > 0) {result = context.getResources().getDimensionPixelSize(resourceId);}mHeightPixels=height-result-dip2px(context,48);//控件的高度=屏幕高度-狀態(tài)欄高度-導航欄高度}/*** 根據(jù)手機的分辨率從 dp 的單位 轉(zhuǎn)成為 px(像素)*/private static int dip2px(Context context, float dpValue) {final float scale = context.getResources().getDisplayMetrics().density;return (int) (dpValue * scale + 0.5f);}}

3.CharacterParser 這個類是將漢字轉(zhuǎn)換成拼音的類，該拼音沒有聲調(diào)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(zhuǎn)換成拼音

package com.example.sortlistview;/*** Java漢字轉(zhuǎn)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(zhuǎn)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);}//判斷城市多音字if (chs.equals("重慶") || chs.equals("長沙")||chs.equals("長春")) {return "C";}return buffer.toString();}public String getSpelling() {return this.getSelling(this.getResource());}}

4.ClearEditText類是自定義的一個在右側(cè)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，我這里就不貼上代碼了Android 帶清除功能的輸入框控件ClearEditText,仿IOS的輸入框

5.SortAdapter 數(shù)據(jù)的適配器類，該類需要實現(xiàn)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(xiàn)前面兩個方法

getSectionForPosition(int position)是根據(jù)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，那么此方法返回的就是’A’字母的ascii值，也就是65， 'B’是66，依次類推
getPositionForSection(int section)就是根據(jù)首字母的ascii值來獲取在該ListView中第一次出現(xiàn)該首字母的位置，例如：從上面的效果圖1中，如果section是66 ，也就是‘B’的ascii值，那么該方法返回的position就是2
然后就是getView()方法，首先我們根據(jù)ListView的position調(diào)用getSectionForPosition(int position)來獲取該位置上面name的首字母的ascii值,然后根據(jù)這個ascii值調(diào)用getPositionForSection(int section)來獲取第一次出現(xiàn)該首字母的position，如果ListView的position 等于 根據(jù)這個ascii值調(diào)用getPositionForSection(int section)來獲取第一次出現(xiàn)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(shù)據(jù)發(fā)生變化時,調(diào)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(jù)position獲取分類的首字母的char ascii值int section = getSectionForPosition(position);//如果當前位置等于該分類首字母的Char的位置 ，則認為是第一次出現(xiàn)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(jù)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(jù)分類的首字母的Char ascii值獲取其第一次出現(xiàn)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;}@Overridepublic Object[] getSections() {return null;} }

6.MainActivity 這里面的代碼比較簡單，我們對ClearEditText設(shè)置addTextChangedListener監(jiān)聽，當輸入框內(nèi)容發(fā)生變化根據(jù)里面的值過濾ListView，里面的值為空顯示原來的列表，里面對列表數(shù)據(jù)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(zhuǎn)換成拼音的類*/private CharacterParser characterParser;private List<SortModel> SourceDateList;/*** 根據(jù)拼音來排列ListView里面的數(shù)據(jù)類*/private PinyinComparator pinyinComparator;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initViews();}private void initViews() {//實例化漢字轉(zhuǎn)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(shè)置右側(cè)觸摸監(jiān)聽sideBar.setOnTouchingLetterChangedListener(new OnTouchingLetterChangedListener() {@Overridepublic void onTouchingLetterChanged(String s) {//該字母首次出現(xiàn)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() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {//這里要利用adapter.getItem(position)來獲取當前position所對應(yīng)的對象Toast.makeText(getApplication(), ((SortModel)adapter.getItem(position)).getName(), Toast.LENGTH_SHORT).show();}});SourceDateList = filledData(getResources().getStringArray(R.array.date));// 根據(jù)a-z進行排序源數(shù)據(jù)Collections.sort(SourceDateList, pinyinComparator);adapter = new SortAdapter(this, SourceDateList);sortListView.setAdapter(adapter);mClearEditText = (ClearEditText) findViewById(R.id.filter_edit);//根據(jù)輸入框輸入值的改變來過濾搜索mClearEditText.addTextChangedListener(new TextWatcher() {@Overridepublic void onTextChanged(CharSequence s, int start, int before, int count) {//當輸入框里面的值為空，更新為原來的列表，否則為過濾數(shù)據(jù)列表filterData(s.toString());}@Overridepublic void beforeTextChanged(CharSequence s, int start, int count,int after) {}@Overridepublic void afterTextChanged(Editable s) {}});}/*** 為ListView填充數(shù)據(jù)* @param date* @return*/private List<SortModel> filledData(String [] date){List<SortModel> mSortList = new ArrayList<SortModel>();//字母MapHashMap<String,String> hashMap=new HashMap<>();for(int i=0; i<date.length; i++){SortModel sortModel = new SortModel();sortModel.setName(date[i]);//漢字轉(zhuǎn)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());hashMap.put(sortString.toUpperCase(),sortString.toUpperCase());}else{sortModel.setSortLetters("#");hashMap.put("#","#");}//獲取有數(shù)據(jù)的字母集合List<String> mapKeyList = new ArrayList<>(hashMap.keySet());//字母排序Collections.sort(mapKeyList);String[] strings = new String[mapKeyList.size()];//將字母集合轉(zhuǎn)換成數(shù)組，并重繪sideBar.setLetter(mapKeyList.toArray(strings));mSortList.add(sortModel);}return mSortList;}/*** 根據(jù)輸入框中的值來過濾數(shù)據(jù)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);}}}// 根據(jù)a-z進行排序Collections.sort(filterDateList, pinyinComparator);adapter.updateListView(filterDateList);}}

7.PinyinComparator接口用來對ListView中的數(shù)據(jù)根據(jù)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(shù)據(jù)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) {//這里主要是用來對ListView里面的數(shù)據(jù)根據(jù)ABCDEFG...來排序if (o2.getSortLetters().equals("#")) {return -1;} else if (o1.getSortLetters().equals("#")) {return 1;} else {return o1.getSortLetters().compareTo(o2.getSortLetters());}} }

這樣我們以后使用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，如果大家有什么疑問，請在下面留言，我會為大家解答的！

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