Android 實現ListView的A-Z字母排序
阿新 • • 發佈：2019-02-02
A-Z排列效果
兩個工具類
26個字母垂直排列自定義類
/** * 作者：created by meixi * 郵箱：[email protected] * 日期：2018/11/23 15 */ public class SideBar extends View { // 觸控事件 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 int choose = -1;// 選中 private Paint paint = new Paint(); private TextView mTextDialog; private Context mContext; /** * 為SideBar設定顯示字母的TextView * * @param mTextDialog */ public void setTextView(TextView mTextDialog) { this.mTextDialog = mTextDialog; } public SideBar(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); mContext = context; } public SideBar(Context context, AttributeSet attrs) { super(context, attrs); mContext = context; } public SideBar(Context context) { super(context); mContext = 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();// 獲取對應高度 int width = getWidth(); // 獲取對應寬度 int singleHeight = height / b.length;// 獲取每一個字母的高度 for (int i = 0; i < b.length; i++) { paint.setColor(getResources().getColor(R.color.side_bar_text)); paint.setColor(Color.BLUE); paint.setTypeface(Typeface.DEFAULT); paint.setAntiAlias(true); paint.setTextSize(dip2px(mContext, 12)); // 選中的狀態 if (i == choose) { paint.setColor(getResources().getColor(R.color.colorPrimaryDark)); paint.setFakeBoldText(true); } // x座標等於中間-字串寬度的一半. float xPos = width / 2 - paint.measureText(b[i]) / 2; float yPos = singleHeight * i + singleHeight; canvas.drawText(b[i], xPos, yPos, paint); paint.reset();// 重置畫筆 } } @Override public boolean dispatchTouchEvent(MotionEvent event) { final int action = event.getAction(); final float y = event.getY();// 點選y座標 final int oldChoose = choose; final OnTouchingLetterChangedListener listener = onTouchingLetterChangedListener; final int c = (int) (y / getHeight() * b.length);// 點選y座標所佔總高度的比例*b陣列的長度就等於點選b中的個數. 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; } /** * 介面 * * @author coder */ public interface OnTouchingLetterChangedListener { public void onTouchingLetterChanged(String s); } public static int dip2px(Context context, float dpValue) { final float scale = context.getResources().getDisplayMetrics().density; return (int) (dpValue * scale + 0.5f); } }
/**
* 漢字轉換成拼音的類
*/
/** * Created by meixi on 18/7/18. */ 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; if (str == null || str.length() == 0) { return null; } int ascii = getChsAscii(str); if (ascii > 0 && ascii < 160) { result = String.valueOf((char) ascii); } else { if (ascii == 0) {//輸入全拼音 return str; } for (int i = (pyvalue.length - 1); i >= 0; i--) { if (pyvalue[i] <= ascii) { result = pystr[i]; break; } } } return result; } /** * 片語解析 * * @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()); } }
PinyinComparator
根據拼音來排列ListView裡面的資料類/** * @author meixi */ public class PinyinComparator implements Comparator<GroupMemberBean> { public int compare(GroupMemberBean o1, GroupMemberBean o2) { if (o1.getSortLetters().equals("@") || o2.getSortLetters().equals("#")) { return -1; } else if (o1.getSortLetters().equals("#") || o2.getSortLetters().equals("@")) { return 1; } else { return o1.getSortLetters().compareTo(o2.getSortLetters()); } } }
點選字母樣式
activity_layout
實體類
public class GroupMemberBean implements Serializable {
private String name;
private String sortLetters;
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;
}
}
適配類
public class SortGroupMemberAdapter extends BaseAdapter implements SectionIndexer {
private List<GroupMemberBean> list = null;
private Context mContext;
public SortGroupMemberAdapter(Context mContext, List<GroupMemberBean> list) {
this.mContext = mContext;
this.list = list;
}
public void updateListView(List<GroupMemberBean> 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 GroupMemberBean mContent = list.get(position);
if (view == null) {
viewHolder = new ViewHolder();
view = LayoutInflater.from(mContext).inflate(R.layout.activity_group_member_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();
}
int section = getSectionForPosition(position);
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;
}
public int getSectionForPosition(int position) {
return list.get(position).getSortLetters().charAt(0);
}
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;
}
private String getAlpha(String str) {
String sortStr = str.trim().substring(0, 1).toUpperCase();
if (sortStr.matches("[A-Z]")) {
return sortStr;
} else {
return "#";
}
}
@Override
public Object[] getSections() {
return null;
}
}
activity類
public class MyABCD extends Activity {
private ListView sortListView;
private SideBar sideBar;
private TextView dialog;
private TextView title;
private LinearLayout titleLayout;
private SortGroupMemberAdapter adapter;
private List<GroupMemberBean> mSortList = new ArrayList<GroupMemberBean>();
/**
* 漢字轉換成拼音的類
*/
private CharacterParser characterParser;
/**
* 根據拼音來排列ListView裡面的資料類
*/
private PinyinComparator pinyinComparator;
/**
* 上次第一個可見元素，用於滾動時記錄標識。
*/
private int lastFirstVisibleItem = -1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.abcdefg);
characterParser = CharacterParser.getInstance();//字元解析器
pinyinComparator = new PinyinComparator();//漢語拼音
getdata();
initview();
}
public void getdata(){
for (int i=0;i<9;i++){
GroupMemberBean bean23347 = new GroupMemberBean();
bean23347.setName("我寫個");
String pinyin23347 = characterParser.getSelling("我寫個");
String sortString23347 = pinyin23347.substring(0, 1).toUpperCase();
if (sortString23347.matches("[A-Z]")) {
bean23347.setSortLetters(sortString23347.toUpperCase());
} else {
bean23347.setSortLetters("#");
}
mSortList.add(bean23347);
}
}
public void initview(){
sortListView =(ListView)findViewById(R.id.listaa);
sideBar = (SideBar)findViewById(R.id.sidebar);
dialog = (TextView)findViewById(R.id.floating_header);
titleLayout = (LinearLayout)findViewById(R.id.title_layout);//標題
title = (TextView)findViewById(R.id.title_layout_catalog);//標題
adapter = new SortGroupMemberAdapter(MyABCD.this, mSortList);
sortListView.setAdapter(adapter);
adapter.notifyDataSetChanged();
Collections.sort(mSortList, pinyinComparator);//排列
sideBar.setTextView(dialog);
sideBar.setOnTouchingLetterChangedListener(new SideBar.OnTouchingLetterChangedListener() {//右邊的abcd
@Override
public void onTouchingLetterChanged(String s) {
// 該字母首次出現的位置
int position = adapter.getPositionForSection(s.charAt(0));
if (position != -1) {
sortListView.setSelection(position);
}
}
});
sortListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// 這裡要利用adapter.getItem(position)來獲取當前position所對應的物件
Toast.makeText(MyABCD.this,"ss"+position,Toast.LENGTH_SHORT).show();
}
});
sortListView.setOnScrollListener(new AbsListView.OnScrollListener() {//上推標題。可用可不用
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
if (mSortList.size() > 1) {
int section = getSectionForPosition(firstVisibleItem);
int nextSection = getSectionForPosition(firstVisibleItem + 1);
int nextSecPosition = getPositionForSection(+nextSection);
if (firstVisibleItem != lastFirstVisibleItem) {
ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) titleLayout
.getLayoutParams();
params.topMargin = 0;
titleLayout.setLayoutParams(params);
title.setText(mSortList.get(
getPositionForSection(section)).getSortLetters());
}
if (nextSecPosition == firstVisibleItem + 1) {
View childView = view.getChildAt(0);
if (childView != null) {
int titleHeight = titleLayout.getHeight();
int bottom = childView.getBottom();
ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) titleLayout
.getLayoutParams();
if (bottom < titleHeight) {
float pushedDistance = bottom - titleHeight;
params.topMargin = (int) pushedDistance;
titleLayout.setLayoutParams(params);
} else {
if (params.topMargin != 0) {
params.topMargin = 0;
titleLayout.setLayoutParams(params);
}
}
}
}
lastFirstVisibleItem = firstVisibleItem;
}
}
});
}
/**
* 根據ListView的當前位置獲取分類的首字母的Char ascii值
*/
public int getSectionForPosition(int position) {
return mSortList.get(position).getSortLetters().charAt(0);
}
/**
* 根據分類的首字母的Char ascii值獲取其第一次出現該首字母的位置
*/
public int getPositionForSection(int section) {
for (int i = 0; i < mSortList.size(); i++) {
String sortStr = mSortList.get(i).getSortLetters();
char firstChar = sortStr.toUpperCase().charAt(0);
if (firstChar == section) {
return i;
}
}
return -1;
}
}
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