ExpandableListView 里面嵌套GridView实现高度自适应

很早之前做过一个商城的app 也是第一次做安卓。

实现的效果如下：

 

因为一开始做安卓，很多写的代码都不规范，在下面上代码的地方，还请高手指点（勿喷，楼主是自尊心很强的屌丝）

这个效果要解决2个大问题，

第一个是ExpandableListView 如何放置gridview  ，这个比较好做 思路就是adapter里实现

第二个是在ExpandableListView里面展开后，GirdView如何能充满ExpandableListView的item， 就是楼上的效果

好，先来解决第一个。如何放置gridview，

在这里使用的adapter 是BaseExpandableListAdapter  并且实现点击girdview里面item的事件

//适配器
    class madapter extends BaseExpandableListAdapter implements OnItemClickListener {

        @Override
        public int getGroupCount() {
            // TODO Auto-generated method stub
            return alllist.size();
        }

        @Override
        public int getChildrenCount(int groupPosition) {
            return 1;
        }

        @Override
        public Object getGroup(int groupPosition) {
            // TODO Auto-generated method stub
            return alllist.get(groupPosition).parentnode;
        }

        @Override
        public Object getChild(int groupPosition, int childPosition) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public long getGroupId(int groupPosition) {
            // TODO Auto-generated method stub
            return groupPosition;
        }

        @Override
        public long getChildId(int groupPosition, int childPosition) {
            // TODO Auto-generated method stub
            return childPosition;
        }

        @Override
        public boolean hasStableIds() {
            // TODO Auto-generated method stub
            return true;
        }

        @Override
        public View getGroupView(int groupPosition, boolean isExpanded,
                View convertView, ViewGroup parent) {
            TextView text = createView(getGroup(groupPosition).toString(),getContext());

            return text;
        }

        @Override
        public View getChildView(int groupPosition, int childPosition,
                boolean isLastChild, View convertView, ViewGroup parent) {
            layoutInflater = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            ViewGroup item = (ViewGroup)layoutInflater.inflate(R.layout.shops_allshops_type_grid, null); //载入gridview布局
            grid  = (ShowAllShopsType_list_grid) item.findViewById(R.id.shopstypegridview);// 获取girdview的节点
            grid.setNumColumns(4);// 设置每行列数
            grid.setGravity(Gravity.CENTER);// 位置居中
            grid.setVerticalSpacing(10);
            grid.setAdapter(gridAdapter(parent.getContext(),(int)getGroupId(groupPosition)));
            grid.setOnItemClickListener(this);
            grid.setVisibility(View.VISIBLE);

            return item;
        }


        @Override
        public boolean isChildSelectable(int groupPosition, int childPosition) {
            // TODO Auto-generated method stub
            return true;
        }

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {

            Intent intent =new Intent(getContext(),ShowAllShops.class);
            intent.putExtra("text", ((TextView)view).getText());
            //getContext().startActivity(intent);
            shopactivty.setResult(1, intent);
            shopactivty.finish();

}
    }

代码只是提供思路的，详细的哪里不懂可以评论发

第二个问题是gridview的自适应

public class ShowAllShopsType_list_grid extends GridView{

    public ShowAllShopsType_list_grid(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    /**
     * 设置不滚动
     */
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
                MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);

    }

 这里只是重写了onMeasure 方法，这样的重写 在ScrollView里放置ListView的冲突上面一样可以解决。