listview子条目点击改变背景

布局什么的，自己操作就好

下面是Listview的适配器，在适配里完成有注释的代码即可：

public class ListView_Adapter extends BaseAdapter {
    List<Fenlei.DataBean> data;
    Context context;
    //要定义一个Int类型的变量
    int aa;
    public ListView_Adapter(List<Fenlei.DataBean> data, Context context) {
        this.data = data;
        this.context = context;
    }

    @Override
    public int getCount() {
        return data.size();
    }

    @Override
    public Object getItem(int i) {
        return data.get(i);
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        viewHolder holder=null;
        if (view==null){
          holder=new viewHolder();
            view = View.inflate(context, R.layout.si, null);
            holder.te = view.findViewById(R.id.f2_list_tv);
            view.setTag(holder);
        }else {
            holder = (viewHolder) view.getTag();
        }
        //根据值改变数据颜色
        if(aa==i){
           view.setBackgroundColor(Color.parseColor("#FAFAFA"));
        }else{
           view.setBackgroundColor(Color.WHITE);
        }
        holder.te.setText(data.get(i).getName());
        return view;
    }
    class viewHolder{
        TextView te;
    }
    //给上面变量定义一个有参构造
    public void setClickPosition(int aa){

        this.aa = aa;
    }
}

然后在你的主方法里调用你的Listview的Item点击事件，代码如下：

left_list_view.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                // 当前点击哪个条目
                leftAdapter.setClickPosition(i);
                // 刷新适配器
                leftAdapter.notifyDataSetChanged();
                // 讲item滚动到屏幕中间
                left_list_view.smoothScrollToPositionFromTop(i, (view.getHeight() - view.getHeight()) / 2);
            }
        });