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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!