popwind在Android项目中用到的非常多今天就写一下我在项目中使用的情况，以后方便使用,下面直接上代码。
当点击城市模块的布局时候响应
ll_city.setOnClickListener(
this)
;执行以下操作
//城市
case R.id.ll_city:
View view = LayoutInflater.
from(
this).inflate(R.layout.popup_area
, null)
;
lv_city = (ListView) view.findViewById(R.id.lv_area)
;
initPopwind(view
,ll_city)
;
CityAdapter cityAdapter =
new CityAdapter(
this, cityList)
;
lv_city.setAdapter(cityAdapter)
;
//城市点击事件
lv_city.setOnItemClickListener(
new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent
, View view
, int position
, long id) {
popupWindow.dismiss()
;
CityAdapter adapter = (CityAdapter) (parent.getAdapter())
;
//根据左侧一级分类选中情况，更新背景色
adapter.setSelectedPosition(position)
;
adapter.notifyDataSetChanged()
;
tv_city.setText(
cityList.get(position).getCity_name())
;
//请求最新数据
city_id =
cityList.get(position).getCity_id()
;
requestData(
province_id, city_id, 0)
;
}
})
;
break;初始化popwind，设置popwind的高度为屏幕的百分之60
private void initPopwind(View view
, final View ll_view) {
LinearLayout layout =
new LinearLayout(PartyActivity.
this)
;
WindowManager wm = (WindowManager)
getSystemService(Context.
WINDOW_SERVICE)
;
LinearLayout.LayoutParams params =
new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.
MATCH_PARENT, (
int) (
screenHeight *
0.6))
;
view.setLayoutParams(params)
;
layout.addView(view)
;
layout.setBackgroundColor(Color.
argb(
60, 0, 0, 0))
;//设置整个popwind的底色有透明覆盖效果
popupWindow =
new PopupWindow(layout
, screenWidth, screenHeight)
;
popupWindow.setFocusable(
true)
;
popupWindow.setBackgroundDrawable(
new BitmapDrawable())
;
popupWindow.setOutsideTouchable(
true)
;
layout.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
popupWindow.dismiss()
;
}
})
;
popupWindow.showAsDropDown(ll_view)
;
}popwind所加载的布局文件，你可以根据自己的需求更改，我需要展示的是城市列表所以写成了listview
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/lv_area"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:divider="@color/liner_color_grag"
android:dividerHeight="1dp"
android:background="#fff"/>
</LinearLayout>城市listview的adapter适配器
/**
* 城市的adapter
* Created by wss.
*/
public class CityAdapter
extends BaseAdapter{
private Context
context;
private List<CityBean>
list;
public CityAdapter(Context context
, List<CityBean> list){
this.
context = context
;
this.
list = list
;
}
@Override
public int getCount() {
return list==
null?
0:
list.size()
;
}
@Override
public Object
getItem(
int position) {
return null;
}
@Override
public long getItemId(
int position) {
return 0;
}
@Override
public View
getView(
int position
, View convertView
, ViewGroup parent) {
ViewHolder holder
;
if (convertView==
null){
holder =
new ViewHolder()
;
convertView = LayoutInflater.
from(
context).inflate(R.layout.right_listview_item
, null)
;
holder.
nameTV = (TextView) convertView.findViewById(R.id.right_item_name)
;
convertView.setTag(holder)
;
}
else{
holder = (ViewHolder) convertView.getTag()
;
}
holder.
nameTV.setText(
list.get(position).getCity_name())
;
return convertView
;
}
private int selectedPosition =
0;
public void setSelectedPosition(
int selectedPosition) {
this.
selectedPosition = selectedPosition
;
}
public int getSelectedPosition() {
return selectedPosition;
}
private class ViewHolder{
TextView
nameTV;
}
}listview条目的布局文件，我这个写的布局很简单，自己可以根据需要写，如果是布局已经定好，条目固定而且数量有限就可以不用使用listview了，也就不需要adapter和条目的布局文件了。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="45dp"
>
<TextView
android:id="@+id/right_item_name"
android:layout_width="match_parent"
android:layout_height="45dp"
android:textSize="14sp"
android:textColor="@color/province"
android:text="安钢"
android:maxLength="10"
android:ellipsize="end"
android:gravity="center_vertical"
android:background="@color/lv_bg"
android:paddingLeft="10dp"
/>
</LinearLayout>popwind代码写完了效果如下：
这个效果需要加上siderbar，下一篇博客会介绍这个功能
popwind效果如上图，希望能帮到大家。
