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;      }   }