点击控件弹出Popwindow下拉框

 		 //设置科室不能编辑i
        et_apply_keshi.setKeyListener(null);
        //设置职称不能编辑
        et_apply_zhicheng.setKeyListener(null);



 if (o instanceof KeShiBean) {
            Log.e("科室接口:", ((KeShiBean) o).getMessage());
            for (int i=0;i<((KeShiBean) o).getResult().size();i++){
                iv_apply_keshi.setOnClickListener(new View.OnClickListener() {
                    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
                    @Override
                    public void onClick(View view) {
                        if (((KeShiBean) o).getMessage().equals("查询成功")) {
                            //创建窗口
                            final ListPopupWindow listPopupWindow=new ListPopupWindow(getBaseContext());
                            //创建适配器 适配器继承 BaseAdapter  参数为集合数据和上下文
                            PopupWindow_Adapter popupWindow_adapter = new PopupWindow_Adapter(((KeShiBean) o).getResult(), getBaseContext());
                            //给listPopupWindow设置适配器
                            listPopupWindow.setAdapter(popupWindow_adapter);
                            //设置listPopupWindow的宽
                            listPopupWindow.setWidth(300);
                            //设置listPopupWindow的高
                            listPopupWindow.setHeight(400);
                            //设置背景颜色
                            listPopupWindow.setBackgroundDrawable(getResources().getDrawable(R.color.white));
                            
                            //设置listPopupWindow在哪个控件下面
                            listPopupWindow.setAnchorView(sp_apply_keshi);
                            listPopupWindow.setModal(true);
                            //设置下拉列表的对齐方式。Gravity.START表示与参照控件左侧对齐，Gravity.END表示与参照控件右侧对齐。注意：该函数只在4.4.2及以上版本中使用。
                            listPopupWindow.setDropDownGravity(Gravity.START);
                            //设置listPopupWindow子视图点击事件 改变输入框内容
                            listPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                                @Override
                                public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                                    sp_apply_keshi.setText(((KeShiBean) o).getResult().get(i).getDepartmentName());
                                    //进行存值 科室的id
                                    KeShi = ((KeShiBean) o).getResult().get(i).getId();
                                    Log.e("科室id:",KeShi+"");
                                    //收回listPopupWindow展示
                                    listPopupWindow.dismiss();
                                }
                            });
                            //展示listPopupWindow
                            listPopupWindow.show();
                        }
                    }
                });


            }

**

Adapter

**

public class PopupWindow_Adapter extends BaseAdapter {
    private List<KeShiBean.ResultBean> list;
    private Context context;

    public PopupWindow_Adapter(List<KeShiBean.ResultBean> result, Context baseContext) {
        list=result;
        context=baseContext;
    }


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

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

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

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        ViewHolder holder;
        if (view==null){
            view= LayoutInflater.from(context).inflate(R.layout.popupwindows_adappter,null);
            holder=new ViewHolder();
            holder.textView=view.findViewById(R.id.tv_pop_xiala);
            view.setTag(holder);
        }else {
            holder= (ViewHolder) view.getTag();
        }
        holder.textView.setText(list.get(i).getDepartmentName());
        return view;
    }
    class ViewHolder{
        TextView textView;
    }
}