ExpandableListView实现展开更多和收起更多

【需求】：

如上面图示

当点开某个一级菜单的时候，其他菜单收起；

子级菜单默认最多5个；

多于5个的显示“展开更多”

点击“展开更多”，展开该级所有子级菜单，同时显示“收起更多”

【代码】：

@Bind(R.id.exp_listview)
ExpandableListView expListview;

adapter = new MyAdapter1(dataBeans);
expListview.setDividerHeight(0);
expListview.setChildDivider(null);
expListview.setGroupIndicator(null);//去掉ExpandableListView 默认的箭头 
expListview.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
   @Override
   public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long
         id) {
      return false;//默认为false，设为true时，点击事件不会展开Group  
   }
});
expListview.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {
   @Override
   public void onGroupExpand(int groupPosition) {
      adapter.setMaxIs5(true);
      for (int i = 0; i < expListview.getCount(); i++) {
         //expListview.expandGroup(i);
         if (i != groupPosition) {
            expListview.collapseGroup(i);//折叠其他
         }
      }
      adapter.notifyDataSetChanged();
   }
});
expListview.setOnGroupCollapseListener(new ExpandableListView.OnGroupCollapseListener() {
   @Override
   public void onGroupCollapse(int groupPosition) {
      adapter.setMaxIs5(true);
   }
});
expListview.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
   @Override
   public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int
         childPosition, long id) {
      return false;
   }
});
expListview.setAdapter(adapter);

class MyAdapter1 extends BaseExpandableListAdapter {

      private List<Category.DataBean> dataBeans;
      private boolean maxIs5=true;//子View最多5个
      private View expand_more_view;//展开更多
      private View collapse_more_view;//收起更多
//    private View listviewItem;//
      private boolean isExpandMore=false;
      private boolean isCollapseMore=false;

      public void setMaxIs5(boolean maxIs5) {
         this.maxIs5 = maxIs5;
      }

      public MyAdapter1(List<Category.DataBean> dataBeans1) {
         this.dataBeans = dataBeans1;
         expand_more_view=UIUtils.getXmlView(R.layout.category_expand_more);
         collapse_more_view=UIUtils.getXmlView(R.layout.category_collapse_more);
//       listviewItem=UIUtils.getXmlView(R.layout.item_category_listview_item);
      }

      @Override
      public int getGroupCount() {
         return dataBeans == null ? 0 : dataBeans.size();
      }

      @Override
      public int getChildrenCount(int groupPosition) {
         int size = dataBeans.get(groupPosition).getSubs().size();
         int size1=Math.min(size,5);
         int size2=Math.max(size,size1);
         if(maxIs5){
            System.out.println("【getChildrenCount】:"+groupPosition+":"+size1);
            return size1;
         }else{
            System.out.println("【getChildrenCount】:"+groupPosition+":"+size2);
            return size2;
         }
      }

      @Override
      public Object getGroup(int groupPosition) {
         return dataBeans.get(groupPosition);
      }

      @Override
      public Object getChild(int groupPosition, int childPosition) {
         System.out.println("【getChild】:groupPosition="+groupPosition+",childPosition="+childPosition);
         return dataBeans.get(groupPosition).getSubs().get(childPosition);
      }

      @Override
      public long getGroupId(int groupPosition) {
         System.out.println("【getGroupId】:"+groupPosition);
         return groupPosition;
      }

      @Override
      public long getChildId(int groupPosition, int childPosition) {
         System.out.println("【getChildId】:groupPosition="+groupPosition+",childPosition="+childPosition);
         return childPosition;
      }

      @Override
      public boolean hasStableIds() {
         //组和子元素是否持有稳定的ID,也就是底层数据的改变不会影响到它们。
         return true;
      }

      @Override
      public View getGroupView(int groupPosition, boolean isExpanded, View convertView,
                         ViewGroup parent) {
         if (convertView == null) {
            convertView = UIUtils.getXmlView(R.layout.expand_header);
         }
         ImageView iv_category_item = (ImageView) convertView.findViewById(R.id
               .iv_category_item);
         x.image().bind(iv_category_item, dataBeans.get(groupPosition).getImg());
         return convertView;
      }

@Override
      public View getChildView(int groupPosition, final int childPosition, boolean isLastChild, View
            convertView, ViewGroup parent) {
         System.out.println("【getChildView】:"+childPosition);
//       if (convertView == null) {
//          convertView = UIUtils.getXmlView(R.layout.expand_content);
//       }
//       ListView lv_category_item = (ListView) convertView.findViewById(R.id.lv_category_item);
//       MyAdapter2 adapter = new MyAdapter2(dataBeans.get(groupPosition).getSubs());
//       lv_category_item.setAdapter(adapter);
//       if (convertView == null) {
//          convertView = listviewItem;
            convertView = UIUtils.getXmlView(R.layout.item_category_listview_item);
//       convertView= LayoutInflater.from(getActivity()).inflate(R.layout.item_category_listview_item,parent,false);
//       }
         TextView tv_catename = (TextView) convertView.findViewById(R.id.tv_catename);
         RelativeLayout rl_category= (RelativeLayout) convertView.findViewById(R.id.rl_category);
         List<Category.DataBean.SubsBean> list=dataBeans.get(groupPosition).getSubs();
         final Category.DataBean.SubsBean subsBean =list.get(childPosition);
         tv_catename.setText(subsBean.getCate_name());
         rl_category.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               UIUtils.toast("跳转到类别：" + subsBean.getCate_name() + ",【图片url】：" + subsBean
                     .getImg(), false);
//             if (childPosition == 4) {
//                maxIs5 = false;
//                YouFanApplication.mHandler.post(new Runnable() {
//                   @Override
//                   public void run() {
//                      notifyDataSetChanged();
//                   }
//                });
//             }
            }
         });
         //处理“展开更多”和“收起更多”
         if(list.size()>5 && isLastChild){
            final LinearLayout convertView1= (LinearLayout) convertView;
            if(maxIs5){//添加展开更多布局
               if(isExpandMore){
                  //convertView1.removeView(expand_more_view);
               }
               ViewGroup parent1 = (ViewGroup) expand_more_view.getParent();
               if(parent1!=null){
                  parent1.removeAllViews();
               }
               convertView1.addView(expand_more_view);
               //The specified child already has a parent. You must call removeView() on the child's parent first.
               isExpandMore=true;
            }else{//添加收起更多布局
               if(isCollapseMore){
                  //convertView1.removeView(collapse_more_view);
               }
               ViewGroup parent2= (ViewGroup) collapse_more_view.getParent();
               if(parent2!=null){
                  parent2.removeAllViews();
               }
               convertView1.addView(collapse_more_view);
               isCollapseMore=true;
            }

            /*-------------------------------------------------------------*/
            expand_more_view.setOnClickListener(new View.OnClickListener() {
               @Override
               public void onClick(View v) {
                  convertView1.removeView(v);
                  //isCollapseMore=true;
                  //isExpandMore=false;
                  maxIs5 = false;
                  YouFanApplication.mHandler.post(new Runnable() {
                     @Override
                     public void run() {
                        notifyDataSetChanged();
                     }
                  });
               }
            });
            /*-------------------------------------------------------------*/
            collapse_more_view.setOnClickListener(new View.OnClickListener() {
               @Override
               public void onClick(View v) {
                  convertView1.removeView(v);
                  //isExpandMore=true;
                  maxIs5 = true;
                  YouFanApplication.mHandler.post(new Runnable() {
                     @Override
                     public void run() {
                        notifyDataSetChanged();
                     }
                  });
               }
            });
            /*-------------------------------------------------------------*/
            return convertView1;
         }

         return convertView;
      }

      @Override
      public boolean isChildSelectable(int groupPosition, int childPosition) {
         //是否选中指定位置上的子元素
         return true;
      }
   }