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。