分组的listview——ExpandableListView

开发使用到的数据统计时可以用分组的ExpandablelistView

效果：

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4/bh5bgt5tWX09Rl85rd5mU+sE+I/tntmy5ZlGd43GazLIqi4Digo571TbudpvKi0vvRS79XV3VbvBC7790wDAdKeP2VpEUaHAfipBfxyiteC8TLWfr68pRDctxicbUN7uwwe4uZK7T6hjm7zN1j3Z/NOI5Ft1tpt8+T3lGn3+113XhBnY/c3eO1TZ5//ulAIf1fvpg2p9vJw93ujwC/g+y0eXhRA9EXdLE1yOd58DsIT8KBPdLZhxCtMxYNNsfis7j38/JXVgzp1+k2vdhuT5esL+jpfvJrLjndMU6LNDgOoigSp3AOdFKUMFvRdEP9Bt0u0fAk9I/89GtFb0W1RLezBylExGkI4pmKOcXoheeupPjxiW97upB03p49+PdkQ3LcYnHGMrPWWfUd4wvUeqeLbjsfeX236v/uJudJ67ObnMdhGDT27Np7ftFtg5VpZYXX1g1j+S/nJA0UUrxOi71o4iPD3aYXvyXBcZA9cUIsqrnbdDfdbMQsUfyeib0+/TH/z71W/i/ffe/W3tbEI6YzAjE7FYvtfOmI4+3prD6/2+KgXe9nz9lw3Peu+FQ6bv91yWKga2w37DVbzNivOrwkpjz+L99Zd2pvavWtenAciBe+/u73oW+LOAt1YDniv96hZ7+z3U03+B1EUSReX8SeS/EQA4eaxVcNn6Fw/ZWkRWqv2QM/erFfPWeof1IhOW650FkqLpNUea07H7nbrzezt1jjk934VGsfNmqbur3FLsKtd8b1r6w00G39mR6dRmnr6BXdHj7QTa/YTx6fxc6GI8qcPWtdLFZUPT2OlZ4G5x166c42a9USB5/FhrG5bEZRlO4hy+82LdLmx6Y4ohNFUetTq73fTrv91yV3v3XFXFfcp/Olk67V8Fy69raWHmCPoqjztSP2b4tuD0ccbBs8BD3Pxb4rcZ/wJMzuoG7ttcS3KD2Anz509rUyzfVXUjx0FEXZt8eIV5Ps8fOnHJLjjovm88xaZ/Y2cz5y5yMTh7vsbW5vcWeHOzvc3ub2B17b0P86Vt894mjWuKZqaT/ZLKu8qGR3ofdTouZz89bnRYnFsrlR35brLXn0Wo2KsWhUXlTu+B5bNscqLytp67Lh8zy7t+x2GctKPrWQHHdfOivT6htWe6/bHwxny3C2DWfHdD+a7seKs2PaH4zqO/0fuGSauWxGp9EY953mn7mNIA8hJMdYHqDymldWNXNFM19RfZnpC8x8yc1X1HxNzRWqL937iC2Ok0VRNMb3hKDbyMMPyTGWB6i+4bVNWn1HzRXK5jVapPoiM15q4s2e991tPs/F0c7sEay7p7XXGjgKjSAPLSTHWB6g+pbbW6y2yarvqHiDl77MKm81a51Z6+wf2NJGkKcZkmMsD2C+YvYWsz9wa61/Uoq+yKwNZm/x2gbXF9FtBLmXkBzjeYxZqi8x8yXnCxc1LlF9iVVWdH0Rl0BEkPsKyTHxlUMQ5NYhOSa+cgiC3Dokx8RXDkGQW4fkmPjKIQhy65AcE185BEFuHZJj4iuHIMitQ3JMfOUQBLl1SI6JrxyCILcOyaEBwKOFbgPIKa/bna8dBEEeafK6HQLAo5XX7Ug4vfgXQZCHluFuXnQ2r9sjL4iHIMijSG634zg5T5LzJAaAxyBta3Ke5HVbFBtBkMeY3G4nSXKe+bO62dsA8NCcZ/5N/tptAHic0G0AOaHbAHJCtwHkhG4DyAndBpATug0gJ3QbQE7oNoCcxtptQhAEua+g2wgiZ9BtBJEz6LavKOntqDD59UGQ8WTi3Q4UJSfpitY1zZxlOanPaCOfYV3TPFUd+anelBIoCi/z9CPmHAtRb0SOTLbbUYHYRZqTdCB1irSjqhEhISHRUDqqahfpyGeY0227SLtTl932FYWXuaeq2Uz+J4Qgt8tku339ODNab0pxptXKtFrTNHdGc2Y0Z0ZzZ7SGpvmKcotu63PMLlJe5nVNiwmxSrSpaeYsa02r5ixraBov83jiPyEEuV0eUbdbitIokFaBNArEmVbrM1qgKEGBhAWS0227SJvaiOl6VCD6HOuoKi/z7pTS1DSnSBNCxDBuzLH44jaCPMo8lm5XNa1eIAEhCSEBIbaiuJnROKfb5iyzSiM+1ZtSnCJNC9ycVmNCelNKtURjQvQ5lqDbyKPOxLvdm1Ka0+rI9KaUhJCYkA4hlWm1oyiequpzTC9zPstokbIi5XOsNa1e1W1RXWOODe8AjwnxFWVgcHZntI6qdqf6S0O3kUeciXc7UJSOqo6M2E/eIcQjxJ7RRNVFPFVtqmqLkIaiJFeP2w1NE3UdOS1PLspfLdGwQDpTijnLEkJqRdqbGqw9gjyyTLzbf01ISEyIU6Q95Y9ut6bViJBKkcZXdDsqEL3MxTGtaokGQ0O3+Cpe5j1F6U0p4s6BohhzTHy5uIEgjzIPv9siYj95Q9NErBKtlmj6397UYLdjQsQeb/FfX1HMOZbd6R0ViDnL2tOqGJzdGU28ClRmmZgg+IpSnUW3kUebR9PtIu1NKYNRFDHkDnQ7KpDqLHP+bHtd06olOrDhPTDxtos0PQemO/R6gSCPKZPttjuj5Z+74l40zSlSd0ZrTasjI5Yj7tmdUvS50aepeaqql3n2cHe227XMwyWE2EWaDvsI8vgy2W6L7duchJnz0twZbeCksTT1i26LjeRuZq/bQAJFMTO7zbPdTh+Ll7le5iOPnCHIo8lku339RAWSc4pYfIe3eWTPWkcQefJYuo0gyM2CbiOInJlgt0MAuDeT7DYAPBzoNoCc0G0AOd1jt/1fvrgR/A5G3iE4DtK/A56c/xkAuJtxdjuKotZeS6T5scnnubitL+iNnUb6qSiKxP2rr6ridhzHvMwrLyoi5rJpv7PH/EQBnphxdjuO4+63rkjnS4fPc3HbWDS8z176qfgsFvevvKxEp5fdjs9ike63LroNcEdjnpNHp5G1almrlvXa4mUubvN5Xl2pittifh5FES9zEe/QS86T2ptaNs2PzXE/U4CnZczdDk/C2ptaeBIGvwP9mR6ehOFJaCwZ/pEfnoT2mt372UvvXH1VjU6j5DzpfO2IRKeR/8sXt3s/ejkPBAD5xt9tfUG/atw2Fo3BbkdRfBYbi0bna6f2ttb91nXfu43tRutTq/qqOr6nCfDkjL/b1ZXqVdvb1qo10O3WXqv3oyc6b6/ZotvN3aZ36KHbAHcx5m7HZ3H7oJ0TsfMsOU86Xzr6gu6sO9Hp5d714DjofuuK296hN+bnCvCUjLnbSZI0d5u1t7WRaWw3xH3CMLReW8aiEUVRHMfd710Re82uf6in/43jeHzPFOBpGX+37TXb/+XHQ4LfgbVqZe/Z396O4/Z+u73frr2tiT3n7qYrPpIeCQeAm7qXbpvPzfRElMszUp6bI7udJElynjQ/Ns3nprPuuJtu5WUlPLnxu14AIOteut372YuG9H72BrpdeVGJoig4DiovKtaqFZ/FYi9aGIbmc7P+oZ6e5QIAN3Uv3a69rTkbzkBqb2uX3T5PrNcWn+fJeRL8DrrfuuLDotviDs3dJubkALc2/m6L01FGOE+y7y+PTqPhYTk+i7H/DGAsxt9tAHgI0G0AOY2z2xO8lBSA9CbZbQB4ONBtADmh2wBy+ie6HcfxVeeZ+Uf+uB4FALLG2u3zpP6hniY47l8CMfgd1N7Uhu8uLqUkbrc+tdJ3gw1cVg0AbmHM43ZwHATHgX/k6wt6ennT63Tbfe+az03xFpH2fttYMtBtgLu4lzm5uHZKkiTidHHR7fgsTq9qHMdx9toszroTRZGxaKRLyN4GgFsYf7c7XzuVFxVx2qn32WvsNES3B0bv8CT0Dj1e5uFJ/9iduWyKG2EYDryrBABuavzdbn5stg/aotvuptv52klbrS/o2VPNGzsNXubN3f4lTRvbjfZ+O0kS77PX2mvd7XkBPHX30m3rtWUsGXEcm89Ncc1T0W1nw0mn5UmSGEsGL3PrtdX93k2SRFwRNTlPzOcmNrYB7mic3Y7j2H5n8zK312zxVwTSd3GKbne+dNJRuvu9K+4chmHlZUV8sPam5qw7zoYzxmcI8DSNedzu/ejVt+reZy9Jks7XjvjzIGm3w5NQXL00jmOxdS32k6fv6+z97PEyv+rvhwHA9d3LnFx021l3xIUWLveinSd8nsdx7B167f129hiY4Kw7fJ6nl0wEgFu7x277R77YbM7uIe986fR3p50nA92uf6iLSxobi0Z6JRYAuJ177Hbqr+euhGFovbac9f5mtv/L5/Mc1ycHuIuxdvs8qb6q6s/07FnixpJhPjfrW/Xhu6d/vlP8zaDsp4Lfgb6g3+I9qwAgjHncFtcbz34kjuOcivbPOR91fTVcOA3gLsY/JweAhwDdBpDTOLs9sQtJATwBk+w2ADwc6DaAnNBtADndV7dHvpEriqLodPDjwXGAw10AY3cv3Y7PYmNpxIVT2gft9H1gQhRFfJ4HvwPxvrE0t35oABDua9yurlTTa5t2v3fFRReGu+2sO+ayWX1VTWMum7zMMZID3NGYu11dqRpLhrFk6M90fUE3lgxr1fIOvcZOIxnqdn2rzue5tWqlE/U4jq3XFt4oAnB3Y+52HMdRFIl5de9Hr/KiIt7RObLbrU+t+CxuH7T1Z3rrU6v7vWs+N3HFcoCxGHO3wzA0n5tiRt350nE33SRJrup2kiTJeeIf+eICLOL6Sr0fPUzIAe5u/Nvbzd2m9dpKzhNno39thhHdPk/sNVtsWldXqu2DthjtO186tbc1/ZluLBnidQEAbmf83U6SxFl37DVbf6aLPd4jx+3ej17na8c/8sWfK/gjvwP/yL/qzwwBwHXcS7eT88RcNsXF0pKr5+SN7Yb12nI2HGfDqbyoVFeq4nb1VbX1CdcwBriTe+l293tX7CcXZ7DkdNs79MSOt/pWvX3QFrdbey10G+COxt9t/8jn89w/8lufWpeXUjpPklHdrryo1N7Uam9q5rJ5efu5iW4D3NGYu9361OLzvH+A+jy5PKZ1niRJ0txtZv9gSGO70f3WTc6T5Dxp7DS8Q0/cbu+30W2AOxpztxs7jfRP8yZJkp6UIkZmXua9H73LO2839AXdWDQGIg533/GJATxx97K9PVJ0Gg2cKB6dDl5crf/xKMLfDAK4o3+u2wDwT0K3AeQ0zm5P+npSADKbZLcTQhAEua+g2wgiZ9BtBJEzD6rbESFR4QZrH4/jW+AryuUK3OTREeRB50F121PVpqaNXNG2qlolGhVIoCjuTP8+DU3zVDX/Gdavvk9vSgkUhZd5+hFzjoWoNyJHHnK3gwLJNq2tqm1VjQnR51igKAkh5iyzStQpUqdInZnRLwo53baLtDt12W1fUXiZe6qazeR/Qghyu0y221HhMjEhnqpWZplYs56i8DLvjGqXKHZ3SrGL1FcUMdheNd7mdFufY3aR8jKva1pMiFWiTU0zZ1lrWjVnWUPTeJmPZdqPIBPIZLttF6lVolaJGnOso6qeqvIy9xWlo6q8zFvTaiI2wglpaJqoWaAoottWiQYFEhJiXrwcjIxdpCPn+VGB6HNMPFB3SmlqmlOkCSFiGDfmWHxxG0EeZSbb7TRWiQaK4qlqtUSNOWbMsd5UfxdXhxCPkOa0qs+xoEDcGc2YY1GBRIR4hHh/67aYtw9/vDelOEWaFrg5rcaE9KaUaomKaX+CbiOPOg+h22Gh30+xve3O/DGLji/q7V/Mumsl6hdImxCP9Mft+Ip95qK64rVg+FO+ogwMzu6M1lFVMdtP0G3kUechdLuhaW1VTS66HRMy3MYuIW1CegWSEFKd0ZqEWNOqOcvMWcbLXNwIhgrc0DRR16t2v4tuV0s0LJDOlCJeYmpF2psarD2CPLJMvNtR4XJSne4nb02rwxPpDiG0SDuEGJrWuahxfPWcPCoQvczFPrZqiQ4331cUsS+tpyi9KUXcOVAUY46JLxc3EORRZuLdrsyydGd49hiYVaK14h/1dme0mqa1CanMaEGhPwm/qtvi45S3uzkAAAgASURBVGJvXEKI2J2enbeL15T2tCoGZ3dGE68Cldn+pr6vKNXcLXkEedCZbLedInUzx6UHjm9bJVqd7RcyLBBe5qLSVpFaJSpeEUZ2OyqQ6ixz/nxpqGtatUQHpvoDE2+7SOsX65NudSPIo8xkuz2wGdwe2jC2izS+uJE2rVakaW+Hu92dUvQ5Vh91KounqnqZD+yoS7td+/OFxi7SdNhHkMeXyXY7jT7HxNGv7pQyckXN2cu9a1Hhcq/4QLfFRvJVC0kICRTFzOyoy3Y7PfuFl7le5iOPnCHIo8kD6Xb8Z2NvlDueAR4oV74QIMgjzgPpNoIgYw66jSByZoLdnvT1pABkNsluT/6FDUEkDrqNIHIG3UYQOfMYux1fcft2wfXSEDkzwW6L007+GtE3cf2jhJCeolQzZ5UYf7vCGa6XhjzRTLDbycU1VcTlTXmZh4XMjYtPiRWNCsScY77Sb2NvSokKRFynpVaiIiNHXVwvDXmimWy3s0k7lvOuaV9RxGBeK9G6ponTS9Mrro38ElwvDXmimWy3wwJpTasivMybf95oTavpAN68eNtGa/pyOG2pakvt3zNncMb10pCnmMl2uzulVEvUU1XxPmrv4nKI7WnVU1WrRDtTirigkqNp4s0bTU0TVzIW10urK4q4Z+2Kt3bgemnIE83Euy3eVukrStrAtFH1Ga07pYjrpbUJ6SpKQkhd08xZZswyS1U7hMSEBIqij7oiWoLrpSFPOQ+h2+JSCumkmpe5qKI7o6Xv1hTXSwsJcYq0WyCuotRUVVwC0S7S9rQ6csMY10tDnm4eQrerJdrMXAXBndF4mYtk34ldmdFahBgzWouQ5pTS0DRxtWNe5vocGz4YhuulIU86D6HbV+2Lzo7bYYFUZplPCJvRfHH1pYuXA2dG84feg43rpSFPPQ+h21etXD3T7aamtafV7pRiFWlCSHtabV/dbVwvDUEm321jjok/GzSc7NWRxP6waomKQdW5OE1N3M52G9dLQ5CEPIBu20Uq/lLfcNLzTMMCsUo0JkT8JcDKLBMTbF9RKrMs3feW4HppCJJmst2Oc9+ecdUV1Mb7XhFcLw2RM5PtNoIg9xV0G0HkzAS7PenrSQHIbJLdBoCHA90GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAckK3AeSEbgPICd0GkBO6DSAndBtATug2gJzQbQA5odsAcsrrNgAAAAAAAACMwX/8x39MehUA4B78+9///te//jXptQCAsfnP//zP//qv/yJra2uu625vb//P//zP/wOAR67ZbP7v//7v//3f/5H/BgAZodsAckK3AeT0/wGkg5YhcgFC4wAAAABJRU5ErkJggg==" alt="" />

第一步.layout中定义ExpandablelistView,和定义普通的listview一样

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.myexpandablelistview.MainActivity" >

    <ExpandableListView
        android:id="@+id/mylistview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </ExpandableListView>

</RelativeLayout>

第二步，设置组和子的数据源

第三步，自定义myadapter继承BaseExpandableListAdapter，复写方法

第四部，给listview设置adapter

package com.example.myexpandablelistview;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.TextView;

public class MainActivity extends Activity {
    private ExpandableListView mylistview;
    //组视图数据
    String[] parents={"三国人物","水浒人物","西游人物"};
    //子视图数据
    String[][] children={
            {"曹操","孙权","刘备"},{"宋江","吴用","高俅","林冲"},{"孙悟空","红孩儿","哪吒"}
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mylistview=(ExpandableListView) findViewById(R.id.mylistview);
        mylistview.setAdapter(new Myadapter());
    }
    //自定义adapter
   class Myadapter extends BaseExpandableListAdapter{

    @Override
    //组数
    public int getGroupCount() {

        return parents.length;
    }

    @Override
    //每组的子数
    public int getChildrenCount(int groupPosition) {

        return children[groupPosition].length;
    }

    @Override
    //返回对应的组
    public Object getGroup(int groupPosition) {

        return parents[groupPosition];
    }

    @Override
    //返回对应的子
    public Object getChild(int groupPosition, int childPosition) {

        return children[groupPosition][childPosition];
    }

    @Override
    //返回组id
    public long getGroupId(int groupPosition) {

        return groupPosition;
    }

    @Override
    //返回子id
    public long getChildId(int groupPosition, int childPosition) {

        return childPosition;
    }

    @Override
    public boolean hasStableIds() {

        return true;
    }

    @Override
    //返回组试图
    public View getGroupView(int groupPosition, boolean isExpanded,
            View convertView, ViewGroup parent) {
        TextView view;
        if(convertView!=null){
            view=(TextView) convertView;
        }
        else{
            view =new TextView(MainActivity.this);
        }
        view.setText(parents[groupPosition]);
        view.setBackgroundColor(Color.RED);
        return view;
    }

    @Override
    //返回子试图
    public View getChildView(int groupPosition, int childPosition,
            boolean isLastChild, View convertView, ViewGroup parent) {

        TextView view;
        if(convertView!=null){
            view=(TextView) convertView;
        }
        else{
            view =new TextView(MainActivity.this);
        }
        view.setText(children[groupPosition][childPosition]);
        return view;
    }

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {

        return true;
    }

   }

}