Android开发实现ListView点击展开收起效果示例

本文实例讲述了android开发实现listview点击展开收起效果。分享给大家供大家参考，具体如下：

废话不说先上效果：

实际上这是采用一个expandablelistview实现的

布局文件很简单：

<?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=".mainactivity" >
  <!--提示框-->
  <textview
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="请选择您的类型："
    android:textsize="30sp"
    android:textcolor="#ffffffff"
    android:paddingleft="5dp"
    android:paddingtop="5dp"
    android:paddingbottom="5dp"
    android:background="#ff000000"/>
  <!--定义一个expandablelistview组件-->
  <expandablelistview
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
  </expandablelistview>
</linearlayout>

然后就是具体实现：

这里主要是添加几个必须的属性 大多数方法不用重写

参考我代码中的位置稍加改动就行

public class mainactivity extends activity {
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    //创建一个expandablelistadapter对象
    final expandablelistadapter adapter = new expandablelistadapter() {
      int[] logos = new int[]{
          r.drawable.human1st,
          r.drawable.human1st,
          r.drawable.human2nd,
          r.drawable.human3rd
      };
      private string[] humantypes = new string[]{
          "不是人","聪明人","普通人","我这样的人"
      };
      private string[][] humans = new string[][]{
          {"上仙","大神","荷兰猪"},
          {"超人","一般聪明人","假的聪明人"},
          {"努力的人","快乐的普通人","苦逼的普通人"},
          {"天才","傻逼","蠢萌"}
      };
      //获得制定组的位置、指定子列表项处的字列表项数据
      private textview gettextview(){
        abslistview.layoutparams layoutparams =
            new abslistview.layoutparams(viewgroup.layoutparams.match_parent,164);
        textview textview = new textview(mainactivity.this);
        textview.setlayoutparams(layoutparams);
        textview.setgravity(gravity.center_vertical | gravity.left);
        textview.setpadding(36,0,0,0);
        textview.settextsize(30);
        return textview;
      }
      @override
      public void registerdatasetobserver(datasetobserver observer) {
      }
      @override
      public void unregisterdatasetobserver(datasetobserver observer) {
      }
      @override
      public int getgroupcount() {
        return humantypes.length;
      }
      @override
      public int getchildrencount(int groupposition) {
        return humans[groupposition].length;
      }
      //获取制定组位置处的组数据
      @override
      public object getgroup(int groupposition) {
        return humantypes[groupposition];
      }
      @override
      public object getchild(int groupposition, int childposition) {
        return humans[groupposition][childposition];
      }
      @override
      public long getgroupid(int groupposition) {
        return groupposition;
      }
      @override
      public long getchildid(int groupposition, int childposition) {
        return childposition;
      }
      @override
      public boolean hasstableids() {
        return true;
      }
      //该方法决定每个组选项的外观
      @override
      public view getgroupview(int groupposition, boolean isexpanded, view convertview, viewgroup parent) {
        linearlayout linearlayout = new linearlayout(mainactivity.this);
        linearlayout.setorientation(linearlayout.horizontal);
        imageview logo = new imageview(mainactivity.this);
        logo.setimageresource(logos[groupposition]);
        linearlayout.addview(logo);
        textview textview = gettextview();
        textview.settext(getgroup(groupposition).tostring());
        linearlayout.addview(textview);
//        linearlayout.setminimumheight(50);
        return linearlayout;
      }
      @override
      public view getchildview(int groupposition, int childposition, boolean islastchild, view convertview, viewgroup parent) {
        textview textview = gettextview();
        textview.settext(getchild(groupposition,childposition).tostring());
        return textview;
      }
      @override
      public boolean ischildselectable(int groupposition, int childposition) {
        return true;
      }
      @override
      public boolean areallitemsenabled() {
        return false;
      }
      @override
      public boolean isempty() {
        return false;
      }
      @override
      public void ongroupexpanded(int groupposition) {
      }
      @override
      public void ongroupcollapsed(int groupposition) {
      }
      @override
      public long getcombinedchildid(long groupid, long childid) {
        return 0;
      }
      @override
      public long getcombinedgroupid(long groupid) {
        return 0;
      }
    };
    expandablelistview expandablelistview = (expandablelistview) findviewbyid(r.id.list);
    expandablelistview.setonchildclicklistener(new expandablelistview.onchildclicklistener() {
      @override
      public boolean onchildclick(expandablelistview parent, view v, int groupposition, int childposition, long id) {
        toast.maketext(mainactivity.this,"你是一个：" +
            adapter.getchild(groupposition,childposition),toast.length_short).show();
        return true;
      }
    });
    expandablelistview.setadapter(adapter);
  }
}

更多关于android相关内容感兴趣的读者可查看本站专题：《android控件用法总结》、《android开发入门与进阶教程》、《android视图view技巧总结》、《android编程之activity操作技巧总结》、《android数据库操作技巧总结》及《android资源操作技巧汇总》

希望本文所述对大家android程序设计有所帮助。