仿手机通讯录

我们先看下效果图：

在看代码之前先看下整体结构的布局文件activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="pcp.zyqj.zz.phonecontactpeople.MainActivity">    <!--标题栏-->    <include layout="@layout/titlebar_blue" />    <!--检索栏-->    <pcp.zyqj.zz.phonecontactpeople.phonecontactpeople.ClearEditText        android:id="@+id/filter_edit"        android:layout_width="fill_parent"        android:layout_height="35dp"        android:layout_marginBottom="5dip"        android:layout_marginTop="5dip"        android:background="@drawable/search_bar_edit_selector"        android:drawableLeft="@drawable/search_bar_icon_normal"        android:drawablePadding="10dp"        android:hint="请输入关键字"        android:paddingLeft="10dp"        android:paddingRight="15dp"        android:singleLine="true"        android:textSize="14sp" />    <FrameLayout        android:layout_width="fill_parent"        android:layout_height="fill_parent">        <!--联系人列表-->        <ListView            android:id="@+id/country_lvcountry"            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:layout_gravity="center"            android:divider="@null" />        <RelativeLayout            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_gravity="center">            <TextView                android:id="@+id/dialog"                android:layout_width="50.0dip"                android:layout_height="50.0dip"                android:layout_alignParentRight="true"                android:layout_marginRight="70dp"                android:background="@drawable/show_head_toast_bg"                android:gravity="center"                android:textColor="#ffffffff"                android:textSize="25.0dip"                android:visibility="invisible" />        </RelativeLayout>        <!--右侧滑动检索条-->        <pcp.zyqj.zz.phonecontactpeople.phonecontactpeople.SideBar            android:id="@+id/sidrbar"            android:layout_width="30.0dip"            android:layout_height="fill_parent"            android:layout_gravity="right|center" />    </FrameLayout></LinearLayout>

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

通过布局文件可以看出每一个部分的职责，然后看下方法类：

先看下ClearEditText：检索栏
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 

关于TextWatcher的了解：http://blog.csdn.net/lili1985516/article/details/7616171

/** * Created by 李金伟 on 2016/12/23. * 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 */public class ClearEditText extends EditText implements OnFocusChangeListener, TextWatcher {    /**     * 删除按钮的引用     */    private Drawable mClearDrawable;    public ClearEditText(Context context) {        this(context, null);    }    public ClearEditText(Context context, AttributeSet attrs) {        //这里构造方法也很重要，不加这个很多属性不能再XML里面定义        this(context, attrs, android.R.attr.editTextStyle);    }    public ClearEditText(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);        init();    }    private void init() {        //获取EditText的DrawableRight,假如没有设置我们就使用默认的图片        mClearDrawable = getCompoundDrawables()[2];        if (mClearDrawable == null) {            mClearDrawable = getResources().getDrawable(R.drawable.emotionstore_progresscancelbtn);        }        mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight());        setClearIconVisible(false);        setOnFocusChangeListener(this);        addTextChangedListener(this);    }    /**     * 因为我们不能直接给EditText设置点击事件，所以我们用记住我们按下的位置来模拟点击事件     * 当我们按下的位置 在  EditText的宽度 - 图标到控件右边的间距 - 图标的宽度  和     * EditText的宽度 - 图标到控件右边的间距之间我们就算点击了图标，竖直方向没有考虑     */    @Override    public boolean onTouchEvent(MotionEvent event) {        if (getCompoundDrawables()[2] != null) {            if (event.getAction() == MotionEvent.ACTION_UP) {                boolean touchable = event.getX() > (getWidth()                        - getPaddingRight() - mClearDrawable.getIntrinsicWidth())                        && (event.getX() < ((getWidth() - getPaddingRight())));                if (touchable) {                    this.setText("");                }            }        }        return super.onTouchEvent(event);    }    /**     * 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏     */    @Override    public void onFocusChange(View v, boolean hasFocus) {        if (hasFocus) {            setClearIconVisible(getText().length() > 0);        } else {            setClearIconVisible(false);        }    }    /**     * 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去     * @param visible     */    protected void setClearIconVisible(boolean visible) {        Drawable right = visible ? mClearDrawable : null;        setCompoundDrawables(getCompoundDrawables()[0],                getCompoundDrawables()[1], right, getCompoundDrawables()[3]);    }    /**     * 当输入框里面内容发生变化的时候回调的方法     */    @Override    public void onTextChanged(CharSequence s, int start, int count, int after) {        setClearIconVisible(s.length() > 0);    }    @Override    public void beforeTextChanged(CharSequence s, int start, int count, int after) {    }    @Override    public void afterTextChanged(Editable s) {    }    /**     * 设置晃动动画     */    public void setShakeAnimation(){        this.setAnimation(shakeAnimation(5));    }    /**     * 晃动动画     * @param counts 1秒钟晃动多少下     * @return     */    public static Animation shakeAnimation(int counts){        Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);        translateAnimation.setInterpolator(new CycleInterpolator(counts));        translateAnimation.setDuration(1000);        return translateAnimation;    }}

再看下SideBar:右侧上下滑动检索。

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

/** * Created by 李金伟 on 2016/12/23. */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;    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.rgb(85, 85, 85));            paint.setTypeface(Typeface.DEFAULT);            paint.setAntiAlias(true);//            paint.setTextSize(UIutils.dip2px(12));            paint.setTextSize(24);            // 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);//点击右边的颜色                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 点击A——# 出现字母 检索     */    public interface OnTouchingLetterChangedListener {         void onTouchingLetterChanged(String s);    }}

对ListView中的数据根据A-Z进行排序  ：PinyinComparator

/** * Created by 李金伟 on 2016/12/23. * .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 */public class PinyinComparator implements Comparator<OA_ContactPeople_ListBean.EmployeeListBean> {    public int compare(OA_ContactPeople_ListBean.EmployeeListBean o1, OA_ContactPeople_ListBean.EmployeeListBean o2) {    if (o1.sortLetters.equals("@")                || o2.sortLetters.equals("#")) {            return -1;        } else if (o1.sortLetters.equals("#")                || o2.sortLetters.equals("@")) {            return 1;        } else {            return o1.sortLetters.compareTo(o2.sortLetters);        }    }}

Java汉字转换为拼音:CharacterParser

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

/** * Created by 李金伟 on 2016/12/23. * 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());    }}

主类：MainActivity

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

public class MainActivity extends AppCompatActivity {    private ImageView iv_back;    private TextView tv_title;    /**     * 汉字转换成拼音的类     */    private CharacterParser characterParser;    /**     * 根据拼音来排列ListView里面的数据类     */    private PinyinComparator pinyinComparator;    private SideBar sideBar;    private TextView dialog;    private ListView sortListView;    private ClearEditText mClearEditText;    private OA_ContactPeople_ListBean oa_contactPeople_listBean;    private List<OA_ContactPeople_ListBean.EmployeeListBean> employeeList;    private MailContactsAdapter mailContactsAdapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        initListener();        initData();    }    private void initView() {        iv_back = (ImageView) findViewById(R.id.iv_back);        iv_back.setVisibility(View.VISIBLE);        tv_title = (TextView) findViewById(R.id.tv_title);        tv_title.setText("员工通讯录");        characterParser = CharacterParser.getInstance();        pinyinComparator = new PinyinComparator();        sideBar = (SideBar) findViewById(R.id.sidrbar);        dialog = (TextView) findViewById(R.id.dialog);        sideBar.setTextView(dialog);        sortListView = (ListView) findViewById(R.id.country_lvcountry);        mClearEditText = (ClearEditText) findViewById(R.id.filter_edit);    }    private void initListener() {        iv_back.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                finish();            }        });        //设置右侧触摸监听        sideBar.setOnTouchingLetterChangedListener(new SideBar.OnTouchingLetterChangedListener() {            @Override            public void onTouchingLetterChanged(String s) {                //该字母首次出现的位置                int position = mailContactsAdapter.getPositionForSection(s.charAt(0));                if (position != -1) {                    sortListView.setSelection(position);                }            }        });        //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) {            }        });    }//    获取数据    private void initData() {        String user_id = "12985";        ServiceApi.getOA_SendShare_ContactPeople_List(user_id, new MyString2Callback() {            @Override            public void onError(Call call, Exception e) {            }            @Override            public void onResponse(Call call, String s) {                oa_contactPeople_listBean = new Gson().fromJson(s, OA_ContactPeople_ListBean.class);                employeeList = oa_contactPeople_listBean.employeeList;                filledData(employeeList);                mailContactsAdapter = new MailContactsAdapter(MainActivity.this,employeeList);                sortListView.setAdapter(mailContactsAdapter);            }        });    }    /**     * 为ListView填充数据     *     * @param employeeList     * @return     */    private void filledData(List<OA_ContactPeople_ListBean.EmployeeListBean> employeeList) {        for (int i = 0; i < employeeList.size(); i++) {            //汉字转换成拼音            String pinyin = characterParser.getSelling(employeeList.get(i).name);            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]")) {                employeeList.get(i).sortLetters = sortString.toUpperCase();            } else {                employeeList.get(i).sortLetters = "#";            }        }        // 根据a-z进行排序源数据        Collections.sort(employeeList, pinyinComparator);    }    /**     * 检索查询     *     * @param filterStr     */    private void filterData(String filterStr) {        List<OA_ContactPeople_ListBean.EmployeeListBean> filterDateList = new ArrayList<OA_ContactPeople_ListBean.EmployeeListBean>();        if (TextUtils.isEmpty(filterStr)) {            filterDateList = oa_contactPeople_listBean.employeeList;        } else {            filterDateList.clear();            for (OA_ContactPeople_ListBean.EmployeeListBean sortModel : oa_contactPeople_listBean.employeeList) {                String name = sortModel.name;                if (name.indexOf(filterStr) != -1 || characterParser.getSelling(name).startsWith(filterStr.toString())) {                    filterDateList.add(sortModel);                }            }        }        employeeList = filterDateList;        mailContactsAdapter.updateListView(employeeList);    }}

Adapter：

 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

/** * Created by FanHaiChao on 2017/2/8. * 员工通讯录 */public class MailContactsAdapter extends BaseAdapter implements SectionIndexer {    private List<OA_ContactPeople_ListBean.EmployeeListBean> datas;    private Context mContext;    public MailContactsAdapter(Context context, List<OA_ContactPeople_ListBean.EmployeeListBean> datas) {        this.mContext = context;        this.datas = datas;    }    /**     * 当ListView数据发生变化时,调用此方法来更新ListView     *     * @param datas     */    public void updateListView(List<OA_ContactPeople_ListBean.EmployeeListBean> datas) {        this.datas = datas;        notifyDataSetChanged();    }    public int getCount() {        return this.datas.size();    }    public Object getItem(int position) {        return datas.get(position);    }    public long getItemId(int position) {        return position;    }    @Override    public View getView(final int position, View convertView, ViewGroup parent) {        ViewHolder holder = null;        final OA_ContactPeople_ListBean.EmployeeListBean mContent = datas.get(position);        if (convertView == null) {            holder = new ViewHolder();            convertView = LayoutInflater.from(mContext).inflate(R.layout.item_mail_contacts, null);            holder.ll_item = (LinearLayout) convertView.findViewById(R.id.ll_item);            holder.tvTitle = (TextView) convertView.findViewById(R.id.title);            holder.tv_job = (TextView) convertView.findViewById(R.id.tv_job);            holder.tvLetter = (TextView) convertView.findViewById(R.id.catalog);            convertView.setTag(holder);        } else {            holder = (ViewHolder) convertView.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)) {            holder.tvLetter.setVisibility(View.VISIBLE);            holder.tvLetter.setText(mContent.sortLetters);        } else {            holder.tvLetter.setVisibility(View.GONE);        }        holder.tvTitle.setText(datas.get(position).name);        holder.tv_job.setText(datas.get(position).em_position);        holder.ll_item.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                            }        });        return convertView;    }    @Override    public Object[] getSections() {        return null;    }    /**     * 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 = datas.get(i).sortLetters;            char firstChar = sortStr.toUpperCase().charAt(0);            if (firstChar == section) {                return i;            }        }        return -1;    }    /**     * 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 datas.get(position).sortLetters.charAt(0);    }    public static class ViewHolder {        public LinearLayout ll_item;        public TextView tvLetter;        public TextView tvTitle;        public TextView tv_job;    }}

参考：http://blog.csdn.net/xiaanming/article/details/12684155

http://blog.csdn.net/baiyulinlin1/article/details/52648547 

http://blog.csdn.net/u011277123/article/details/52154471

源码：http://download.csdn.net/detail/lijinweii/9874179