感谢eoe社区的分享
 
最近看关于Android实现ListView的功能问题，一直都是小伙伴们关心探讨的Android开发问题之一，今天看到有关ListView实现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，转帖来和eoe的小伙伴们一同分享下！
Android 有关ListView实现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

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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

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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

  1. <font color="#000"><font face="Arial">package com.example.sortlistview;
  2. public class SortModel {
  3. private String name;   //显示的数据
  4. private String sortLetters;  //显示数据拼音的首字母
  5. public String getName() {
  6. return name;
  7. }
  8. public void setName(String name) {
  9. this.name = name;
  10. }
  11. public String getSortLetters() {
  12. return sortLetters;
  13. }
  14. public void setSortLetters(String sortLetters) {
  15. this.sortLetters = sortLetters;
  16. }
  17. }</font></font>

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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. <font color="#000"><font face="Arial">package com.example.sortlistview;
  2. import android.content.Context;
  3. import android.graphics.Canvas;
  4. import android.graphics.Color;
  5. import android.graphics.Paint;
  6. import android.graphics.Typeface;
  7. import android.graphics.drawable.ColorDrawable;
  8. import android.util.AttributeSet;
  9. import android.view.MotionEvent;
  10. import android.view.View;
  11. import android.widget.TextView;
  12. public class SideBar extends View {
  13. // 触摸事件
  14. private OnTouchingLetterChangedListener onTouchingLetterChangedListener;
  15. // 26个字母
  16. public static String[] b = { "A", "B", "C", "D", "E", "F", "G", "H", "I",
  17. "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V",
  18. "W", "X", "Y", "Z", "#" };
  19. private int choose = -1;// 选中
  20. private Paint paint = new Paint();
  21. private TextView mTextDialog;
  22. /**
  23. * 为SideBar设置显示字母的TextView
  24. * @param mTextDialog
  25. */
  26. public void setTextView(TextView mTextDialog) {
  27. this.mTextDialog = mTextDialog;
  28. }
  29. public SideBar(Context context, AttributeSet attrs, int defStyle) {
  30. super(context, attrs, defStyle);
  31. }
  32. public SideBar(Context context, AttributeSet attrs) {
  33. super(context, attrs);
  34. }
  35. public SideBar(Context context) {
  36. super(context);
  37. }
  38. /**
  39. * 重写这个方法
  40. */
  41. protected void onDraw(Canvas canvas) {
  42. super.onDraw(canvas);
  43. // 获取焦点改变背景颜色.
  44. int height = getHeight();// 获取对应高度
  45. int width = getWidth(); // 获取对应宽度
  46. int singleHeight = height / b.length;// 获取每一个字母的高度
  47. for (int i = 0; i < b.length; i++) {
  48. paint.setColor(Color.rgb(33, 65, 98));
  49. // paint.setColor(Color.WHITE);
  50. paint.setTypeface(Typeface.DEFAULT_BOLD);
  51. paint.setAntiAlias(true);
  52. paint.setTextSize(20);
  53. // 选中的状态
  54. if (i == choose) {
  55. paint.setColor(Color.parseColor("#3399ff"));
  56. paint.setFakeBoldText(true);
  57. }
  58. // x坐标等于中间-字符串宽度的一半.
  59. float xPos = width / 2 - paint.measureText(b[i]) / 2;
  60. float yPos = singleHeight * i + singleHeight;
  61. canvas.drawText(b[i], xPos, yPos, paint);
  62. paint.reset();// 重置画笔
  63. }
  64. }
  65. @Override
  66. public boolean dispatchTouchEvent(MotionEvent event) {
  67. final int action = event.getAction();
  68. final float y = event.getY();// 点击y坐标
  69. final int oldChoose = choose;
  70. final OnTouchingLetterChangedListener listener = onTouchingLetterChangedListener;
  71. 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.
  72. switch (action) {
  73. case MotionEvent.ACTION_UP:
  74. setBackgroundDrawable(new ColorDrawable(0x00000000));
  75. choose = -1;//
  76. invalidate();
  77. if (mTextDialog != null) {
  78. mTextDialog.setVisibility(View.INVISIBLE);
  79. }
  80. break;
  81. default:
  82. setBackgroundResource(R.drawable.sidebar_background);
  83. if (oldChoose != c) {
  84. if (c >= 0 && c < b.length) {
  85. if (listener != null) {
  86. listener.onTouchingLetterChanged(b[c]);
  87. }
  88. if (mTextDialog != null) {
  89. mTextDialog.setText(b[c]);
  90. mTextDialog.setVisibility(View.VISIBLE);
  91. }
  92. choose = c;
  93. invalidate();
  94. }
  95. }
  96. break;
  97. }
  98. return true;
  99. }
  100. /**
  101. * 向外公开的方法
  102. *
  103. * @param onTouchingLetterChangedListener
  104. */
  105. public void setOnTouchingLetterChangedListener(
  106. OnTouchingLetterChangedListener onTouchingLetterChangedListener) {
  107. this.onTouchingLetterChangedListener = onTouchingLetterChangedListener;
  108. }
  109. /**
  110. * 接口
  111. *
  112. * @author coder
  113. *
  114. */
  115. public interface OnTouchingLetterChangedListener {
  116. public void onTouchingLetterChanged(String s);
  117. }
  118. }</font></font>

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

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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. <font color="#000"><font face="Arial">package com.example.sortlistview;
  2. import java.util.List;
  3. import android.content.Context;
  4. import android.view.LayoutInflater;
  5. import android.view.View;
  6. import android.view.ViewGroup;
  7. import android.widget.BaseAdapter;
  8. import android.widget.SectionIndexer;
  9. import android.widget.TextView;
  10. public class SortAdapter extends BaseAdapter implements SectionIndexer{
  11. private List<SortModel> list = null;
  12. private Context mContext;
  13. public SortAdapter(Context mContext, List<SortModel> list) {
  14. this.mContext = mContext;
  15. this.list = list;
  16. }
  17. /**
  18. * 当ListView数据发生变化时,调用此方法来更新ListView
  19. * @param list
  20. */
  21. public void updateListView(List<SortModel> list){
  22. this.list = list;
  23. notifyDataSetChanged();
  24. }
  25. public int getCount() {
  26. return this.list.size();
  27. }
  28. public Object getItem(int position) {
  29. return list.get(position);
  30. }
  31. public long getItemId(int position) {
  32. return position;
  33. }
  34. public View getView(final int position, View view, ViewGroup arg2) {
  35. ViewHolder viewHolder = null;
  36. final SortModel mContent = list.get(position);
  37. if (view == null) {
  38. viewHolder = new ViewHolder();
  39. view = LayoutInflater.from(mContext).inflate(R.layout.item, null);
  40. viewHolder.tvTitle = (TextView) view.findViewById(R.id.title);
  41. viewHolder.tvLetter = (TextView) view.findViewById(R.id.catalog);
  42. view.setTag(viewHolder);
  43. } else {
  44. viewHolder = (ViewHolder) view.getTag();
  45. }
  46. //根据position获取分类的首字母的char ascii值
  47. int section = getSectionForPosition(position);
  48. //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
  49. if(position == getPositionForSection(section)){
  50. viewHolder.tvLetter.setVisibility(View.VISIBLE);
  51. viewHolder.tvLetter.setText(mContent.getSortLetters());
  52. }else{
  53. viewHolder.tvLetter.setVisibility(View.GONE);
  54. }
  55. viewHolder.tvTitle.setText(this.list.get(position).getName());
  56. return view;
  57. }
  58. final static class ViewHolder {
  59. TextView tvLetter;
  60. TextView tvTitle;
  61. }
  62. /**
  63. * 根据ListView的当前位置获取分类的首字母的char ascii值
  64. */
  65. public int getSectionForPosition(int position) {
  66. return list.get(position).getSortLetters().charAt(0);
  67. }
  68. /**
  69. * 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
  70. */
  71. public int getPositionForSection(int section) {
  72. for (int i = 0; i < getCount(); i++) {
  73. String sortStr = list.get(i).getSortLetters();
  74. char firstChar = sortStr.toUpperCase().charAt(0);
  75. if (firstChar == section) {
  76. return i;
  77. }
  78. }
  79. return -1;
  80. }
  81. @Override
  82. public Object[] getSections() {
  83. return null;
  84. }
  85. }</font></font>

复制代码

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. <font color="#000"><font face="Arial">package com.example.sortlistview;
  2. import java.util.ArrayList;
  3. import java.util.Collections;
  4. import java.util.List;
  5. import android.app.Activity;
  6. import android.os.Bundle;
  7. import android.text.Editable;
  8. import android.text.TextUtils;
  9. import android.text.TextWatcher;
  10. import android.view.View;
  11. import android.widget.AdapterView;
  12. import android.widget.AdapterView.OnItemClickListener;
  13. import android.widget.ListView;
  14. import android.widget.TextView;
  15. import android.widget.Toast;
  16. import com.example.sortlistview.SideBar.OnTouchingLetterChangedListener;
  17. public class MainActivity extends Activity {
  18. private ListView sortListView;
  19. private SideBar sideBar;
  20. /**
  21. * 显示字母的TextView
  22. */
  23. private TextView dialog;
  24. private SortAdapter adapter;
  25. private ClearEditText mClearEditText;
  26. /**
  27. * 汉字转换成拼音的类
  28. */
  29. private CharacterParser characterParser;
  30. private List<SortModel> SourceDateList;
  31. /**
  32. * 根据拼音来排列ListView里面的数据类
  33. */
  34. private PinyinComparator pinyinComparator;
  35. @Override
  36. protected void onCreate(Bundle savedInstanceState) {
  37. super.onCreate(savedInstanceState);
  38. setContentView(R.layout.activity_main);
  39. initViews();
  40. }
  41. private void initViews() {
  42. //实例化汉字转拼音类
  43. characterParser = CharacterParser.getInstance();
  44. pinyinComparator = new PinyinComparator();
  45. sideBar = (SideBar) findViewById(R.id.sidrbar);
  46. dialog = (TextView) findViewById(R.id.dialog);
  47. sideBar.setTextView(dialog);
  48. //设置右侧触摸监听
  49. sideBar.setOnTouchingLetterChangedListener(new OnTouchingLetterChangedListener() {
  50. @Override
  51. public void onTouchingLetterChanged(String s) {
  52. //该字母首次出现的位置
  53. int position = adapter.getPositionForSection(s.charAt(0));
  54. if(position != -1){
  55. sortListView.setSelection(position);
  56. }
  57. }
  58. });
  59. sortListView = (ListView) findViewById(R.id.country_lvcountry);
  60. sortListView.setOnItemClickListener(new OnItemClickListener() {
  61. @Override
  62. public void onItemClick(AdapterView<?> parent, View view,
  63. int position, long id) {
  64. //这里要利用adapter.getItem(position)来获取当前position所对应的对象
  65. Toast.makeText(getApplication(), ((SortModel)adapter.getItem(position)).getName(), Toast.LENGTH_SHORT).show();
  66. }
  67. });
  68. SourceDateList = filledData(getResources().getStringArray(R.array.date));
  69. // 根据a-z进行排序源数据
  70. Collections.sort(SourceDateList, pinyinComparator);
  71. adapter = new SortAdapter(this, SourceDateList);
  72. sortListView.setAdapter(adapter);
  73. mClearEditText = (ClearEditText) findViewById(R.id.filter_edit);
  74. //根据输入框输入值的改变来过滤搜索
  75. mClearEditText.addTextChangedListener(new TextWatcher() {
  76. @Override
  77. public void onTextChanged(CharSequence s, int start, int before, int count) {
  78. //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
  79. filterData(s.toString());
  80. }
  81. @Override
  82. public void beforeTextChanged(CharSequence s, int start, int count,
  83. int after) {
  84. }
  85. @Override
  86. public void afterTextChanged(Editable s) {
  87. }
  88. });
  89. }
  90. /**
  91. * 为ListView填充数据
  92. * @param date
  93. * @return
  94. */
  95. private List<SortModel> filledData(String [] date){
  96. List<SortModel> mSortList = new ArrayList<SortModel>();
  97. for(int i=0; i<date.length; i++){
  98. SortModel sortModel = new SortModel();
  99. sortModel.setName(date[i]);
  100. //汉字转换成拼音
  101. String pinyin = characterParser.getSelling(date[i]);
  102. String sortString = pinyin.substring(0, 1).toUpperCase();
  103. // 正则表达式，判断首字母是否是英文字母
  104. if(sortString.matches("[A-Z]")){
  105. sortModel.setSortLetters(sortString.toUpperCase());
  106. }else{
  107. sortModel.setSortLetters("#");
  108. }
  109. mSortList.add(sortModel);
  110. }
  111. return mSortList;
  112. }
  113. /**
  114. * 根据输入框中的值来过滤数据并更新ListView
  115. * @param filterStr
  116. */
  117. private void filterData(String filterStr) {
  118. List<SortModel> filterDateList = new ArrayList<SortModel>();
  119. if (TextUtils.isEmpty(filterStr)) {
  120. filterDateList = SourceDateList;
  121. } else {
  122. filterDateList.clear();
  123. for (SortModel sortModel : SourceDateList) {
  124. String name = sortModel.getName();
  125. if (name.toUpperCase().indexOf(
  126. filterStr.toString().toUpperCase()) != -1
  127. || characterParser.getSelling(name).toUpperCase()
  128. .startsWith(filterStr.toString().toUpperCase())) {
  129. filterDateList.add(sortModel);
  130. }
  131. }
  132. }
  133. // 根据a-z进行排序
  134. Collections.sort(filterDateList, pinyinComparator);
  135. adapter.updateListView(filterDateList);
  136. }
  137. }</font></font>

复制代码

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. <font color="rgb(0, 0, 0)"><font face="Arial">package com.example.sortlistview;
  2. import java.util.Comparator;
  3. /**
  4. *
  5. * @author xiaanming
  6. *
  7. */
  8. public class PinyinComparator implements Comparator<SortModel> {
  9. public int compare(SortModel o1, SortModel o2) {
  10. //这里主要是用来对ListView里面的数据根据ABCDEFG...来排序
  11. if (o2.getSortLetters().equals("#")) {
  12. return -1;
  13. } else if (o1.getSortLetters().equals("#")) {
  14. return 1;
  15. } else {
  16. return o1.getSortLetters().compareTo(o2.getSortLetters());
  17. }
  18. }
  19. }</font></font>

复制代码

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！

源码下载：
<ignore_js_op style="-ms-word-wrap: break-word;"> SortListView.rar (1.28 MB, 下载次数: 1514) 

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