PopupWindow简单使用

如图是效果图

当点击 “点我”的按钮是   会弹出 如图的 弹窗

补充为PopupWindow设置一个显示动画和消失的动画

先在anim的文件下分别设置显示和消失的动画

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate

        android:duration="500"

        android:fromXDelta="0%"

        android:toXDelta="0%"

        android:fromYDelta="100%"

        android:toYDelta="0%" />

       <!--  <alpha

            android:fromAlpha="0.0"

            android:toAlpha="1.0"

            android:duration="500"

            android:startOffset="500"/> -->

</set>

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate

        android:fromXDelta="0"

        android:toXDelta="0"

        android:fromYDelta="0"

        android:toYDelta="100%"

        android:duration="500" />

</set> 

再在style内写其他的

    <style name="popwin_anim_style">

        <item name="android:windowEnterAnimation">@anim/popshow</item>

        <item name="android:windowExitAnimation">@anim/pophide</item>

    </style>

            //创建PopupWindow实例，同时传入弹出窗口的显示高度和宽度以及是否设置焦点

            popupWindow = new PopupWindow(infView,LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT,true);

            //如果不设置PopupWindow背景，无论是点击外部区域还是Back键都没法dismiss弹窗

            popupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

            //设置显示的动画

            popupWindow.setAnimationStyle(R.style.popwin_anim_style);

主代码如下    布局xml  就是只有一个 Button

 package org.xml.popdemo;

 import ogg.huanxin.huadong.R;

 import android.app.Activity;

 import android.os.Bundle;

 import android.view.View;

 import android.view.View.OnClickListener;

 import android.widget.Button;

 public class MainPopWindow extends Activity implements OnClickListener {

     private Button popButton;

     private PopWindowForAttr popWindowForAttr;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         // TODO Auto-generated method stub

         super.onCreate(savedInstanceState);

         super.setContentView(R.layout.main_popwindow);

         popButton=(Button)super.findViewById(R.id.popbutton);

         popButton.setOnClickListener(this);

         popWindowForAttr = new PopWindowForAttr(this);

     }

     @Override

     public void onClick(View v) {

         // TODO Auto-generated method stub

         switch (v.getId()) {

         case R.id.popbutton:

             popWindowForAttr.showAsDropDown(v);

             break;

         default:

             break;

         }

     }

 }

 package org.xml.popdemo;

 import ogg.huanxin.huadong.R;

 import android.app.ActionBar.LayoutParams;

 import android.content.Context;

 import android.graphics.Color;

 import android.graphics.drawable.ColorDrawable;

 import android.view.Gravity;

 import android.view.LayoutInflater;

 import android.view.View;

 import android.view.View.OnClickListener;

 import android.widget.Button;

 import android.widget.ImageButton;

 import android.widget.PopupWindow;

 import android.widget.TextView;

 import android.widget.Toast;

 import android.widget.PopupWindow.OnDismissListener;

 public class PopWindowForAttr implements OnClickListener, OnDismissListener {

     private Context context;

     private PopupWindow popupWindow;

     private Button addCart, doCart;

     private final int AddReduce = 1;

     private TextView Popreduce, Popnum, Popadd;

     private ImageButton deleteButton;

     public PopWindowForAttr(Context context) {

         this.context = context;

         // 自定义的一个控件作为显示内容

         View contentView = LayoutInflater.from(context).inflate(

                 R.layout.popupwindowdemo, null);

         //

         addCart = (Button) contentView.findViewById(R.id.addCart);

         doCart = (Button) contentView.findViewById(R.id.doCart);

         Popreduce = (TextView) contentView.findViewById(R.id.pop_reduce);

         Popnum = (TextView) contentView.findViewById(R.id.pop_num);

         Popadd = (TextView) contentView.findViewById(R.id.pop_add);

         deleteButton = (ImageButton) contentView.findViewById(R.id.delete);

         // 各组件绑定事件

         addCart.setOnClickListener(this);

         doCart.setOnClickListener(this);

         Popreduce.setOnClickListener(this);

         Popadd.setOnClickListener(this);

         deleteButton.setOnClickListener(this);

         // 将加载的视图view载入PopubWindow,并且设置popupwindow这个组件的动画效果

         popupWindow = new PopupWindow(contentView, LayoutParams.MATCH_PARENT,

                 LayoutParams.WRAP_CONTENT, true);

         // 如果不设置PopupWindow的背景，无论是点击外部区域还是Back键都无法dismiss弹框

         popupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

         // 当popWindow消失时的监听

         popupWindow.setOnDismissListener(this);

     }

     public void showAsDropDown(View v) {

         // showAsDropDown(View anchor)：相对某个控件的位置（正左下方），无偏移

         // showAsDropDown(View anchor, int xoff, int yoff)：相对某个控件的位置，有偏移

         // showAtLocation(View parent, int gravity, int x, int

         // y)：相对于父控件的位置（例如正中央Gravity.CENTER，下方Gravity.BOTTOM等），可以设置偏移或无偏移

         popupWindow.showAtLocation(v, Gravity.BOTTOM, 100, 100);

         // 设置setFocusable(true)，要不然点击弹窗其他地方以及返回键，弹窗都不会退出

         // 也才能让popupWindow里面的布局控件获得点击的事件，否则就被它的父亲view给拦截了

         popupWindow.setFocusable(true);

         //这个方法时设置popupWindow以外的区域可以相应触摸事件，比如我们重写了触摸事件去做一些别的操作，但首先Focusable是true。

         popupWindow.setOutsideTouchable(true);

         popupWindow.update();

     }

     // 销毁

     @Override

     public void onDismiss() {

         // TODO Auto-generated method stub

         popupWindow.dismiss();

     }

     @Override

     public void onClick(View arg0) {

         // TODO Auto-generated method stub

         switch (arg0.getId()) {

         case R.id.addCart:

             Toast.makeText(context, "添加到购物车", Toast.LENGTH_SHORT).show();

             break;

         case R.id.doCart:

             Toast.makeText(context, "立即购买", Toast.LENGTH_SHORT).show();

             break;

         case R.id.delete:

             onDismiss();

             break;

         case R.id.pop_reduce:

             if (!Popnum.getText().toString().equals("1")) {

                 String num_ReduceString = Integer.valueOf(Popnum.getText()

                         .toString()) - AddReduce + "";

                 Popnum.setText(num_ReduceString);

             } else {

                 Toast.makeText(context, "您买入的数量不能低于1", Toast.LENGTH_SHORT)

                         .show();

             }

             break;

         case R.id.pop_add:

             if (!Popnum.getText().toString().equals("1000")) {

                 String numString = Integer.valueOf(Popnum.getText().toString())

                         + AddReduce + "";

                 Popnum.setText(numString);

             }

             break;

         default:

             break;

         }

     }

 }

 <?xml version="1.0" encoding="utf-8"?>

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

     android:layout_width="match_parent"

     android:layout_height="match_parent"

     android:background="#FFFFFF"

     android:orientation="vertical"

     android:paddingLeft="15dp"

     android:paddingRight="15dp" >

     <LinearLayout

         android:layout_width="match_parent"

         android:layout_height="wrap_content"

         android:layout_gravity="center_vertical"

         android:layout_marginTop="10dp" >

         <ImageView

             android:layout_width="50dp"

             android:layout_height="50dp"

             android:scaleType="fitCenter"

             android:src="@drawable/d" />

         <LinearLayout

             android:layout_width="wrap_content"

             android:layout_height="match_parent"

             android:layout_marginLeft="10dp"

             android:layout_weight="1"

             android:orientation="vertical" >

             <TextView

                 android:layout_width="wrap_content"

                 android:layout_height="wrap_content"

                 android:gravity="center_vertical"

                 android:text="现售价：￥49.00"

                 android:textSize="15sp" />

             <TextView

                 android:id="@+id/kucun"

                 android:layout_width="wrap_content"

                 android:layout_height="wrap_content"

                 android:gravity="center_vertical"

                 android:paddingTop="4dp"

                 android:text="库存为：987"

                 android:textSize="12sp" />

         </LinearLayout>

         <ImageButton

             android:layout_width="wrap_content"

             android:layout_height="wrap_content"

             android:id="@+id/delete"

             android:layout_weight="1"

             android:background="@null"

             android:padding="4dp"

             android:src="@drawable/delete" />

     </LinearLayout>

     <LinearLayout

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         android:background="#eee"

         android:orientation="horizontal" >

         <TextView

             android:layout_width="0dp"

             android:layout_height="wrap_content"

             android:layout_weight="1"

             android:padding="1dp"

             android:text="购买数量" />

         <TextView

             android:id="@+id/pop_reduce"

             android:layout_width="wrap_content"

             android:layout_height="wrap_content"

             android:paddingBottom="10dp"

             android:paddingLeft="12dp"

             android:paddingRight="12dp"

             android:paddingTop="10dp"

             android:text="-"

             android:color="#000000" />

         <TextView

             android:id="@+id/pop_num"

             android:layout_width="60dp"

             android:layout_height="wrap_content"

             android:gravity="center"

             android:padding="10dp"

             android:text="1"

             android:textColor="#000000" />

         <TextView

             android:id="@+id/pop_add"

             android:layout_width="wrap_content"

             android:layout_height="wrap_content"

             android:paddingBottom="10dp"

             android:paddingLeft="12dp"

             android:paddingRight="12dp"

             android:paddingTop="10dp"

             android:text="+"

             android:textColor="#000000" />

     </LinearLayout>

     <LinearLayout

         android:layout_width="wrap_content"

         android:layout_height="wrap_content" >

         <Button

             android:id="@+id/addCart"

             android:layout_width="wrap_content"

             android:layout_height="wrap_content"

             android:layout_weight="1"

             android:background="@drawable/png_3"

             android:paddingBottom="10dp"

             android:paddingLeft="20dp"

             android:paddingRight="20dp"

             android:paddingTop="10dp"

             android:text="加入购物车"

             android:textColor="@android:color/white" />

         <Button

             android:id="@+id/doCart"

             android:layout_width="wrap_content"

             android:layout_height="wrap_content"

             android:layout_weight="1"

             android:background="@drawable/png_3"

             android:paddingBottom="10dp"

             android:paddingLeft="20dp"

             android:paddingRight="20dp"

             android:paddingTop="10dp"

             android:text="立即购买"

             android:textColor="@android:color/white" />

     </LinearLayout>

 </LinearLayout>

另外一种常见的方式  当点击一个下拉箭头  会出现的一个popowind 如下拉选择

下拉选择

1 假如listview的item中有Button，ImageButton，CheckBox等会强制获取焦点的view，这时listview的item无法获取焦点，从而无法被点击

解决方法    在item的根布局增加以下的属性android:descendantFocusability="blocksDescendants"设置后，Button获取焦点，item中的其他控件页可以获取焦点了

如下是主要代码

 package com.ithello.xiala;

 import java.util.ArrayList;

 import java.util.List;

 import android.app.Activity;

 import android.graphics.drawable.BitmapDrawable;

 import android.os.Bundle;

 import android.util.Log;

 import android.view.View;

 import android.view.View.OnClickListener;

 import android.view.ViewGroup;

 import android.widget.AdapterView;

 import android.widget.AdapterView.OnItemClickListener;

 import android.widget.BaseAdapter;

 import android.widget.EditText;

 import android.widget.ImageView;

 import android.widget.ListView;

 import android.widget.PopupWindow;

 import android.widget.TextView;

 /**

  * 实现下拉选择的控件

  *

  * @author Administrator

  *

  */

 public class MainActivity extends Activity implements OnClickListener {

     /**文本编辑框*/

     private EditText editText;

     /**下拉的图标点击可以出现弹窗*/

     private ImageView imageView;

     /**弹窗中的list数据*/

     private List<String> list = new ArrayList<String>();

     /***/

     private ListView listView;

     /**弹窗PopupWindow*/

     private PopupWindow popupWindow;

     /**弹窗PopupWindow的默认高度*/

     private int popupWindowHight = 300;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         // TODO Auto-generated method stub

         super.onCreate(savedInstanceState);

         setContentView(R.layout.mainactivity);

         setView();

         setData();

     }

     private void setView() {

         // TODO Auto-generated method stub

         editText = (EditText) findViewById(R.id.edt_main);

         imageView = (ImageView) findViewById(R.id.iv);

         imageView.setOnClickListener(this);

     }

     private void setData() {

         // TODO Auto-generated method stub

         // 初始化数据

         for (int i = 0; i < 15; i++) {

             list.add(900000 + i + "");

         }

         listView = new ListView(this);

         listView.setVerticalScrollBarEnabled(false);// 隐藏listview的滚动条
            listView.setBackgroundColor(Color.parseColor("#E6E6E6"));
            listView.setDivider(new ColorDrawable(Color.WHITE));
            listView.setDividerHeight(1);

         MyAdapter adapter = new MyAdapter();

         listView.setAdapter(adapter);

         listView.setOnItemClickListener(new OnItemClickListener() {

             @Override

             public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

                     long arg3) {

                 // TODO Auto-generated method stub

                 Log.d("jiejie", arg2 + "");

                 editText.setText(list.get(arg2));

                 popupWindow.dismiss();

             }

         });

     }

     /**

      * 显示一个PopupWindow

      */

     private void showNumPopu() {

         if (popupWindow == null) {

             popupWindow = new PopupWindow(listView, editText.getWidth(),

                     popupWindowHight);

         }

         // 要让其中的view获取焦点，必须设置为true

         popupWindow.setFocusable(true);

         // 还必须设置一个背景图片

         popupWindow.setBackgroundDrawable(new BitmapDrawable());

         // 设置点击外部点击消失

         popupWindow.setOutsideTouchable(true);

         popupWindow.showAsDropDown(editText, 0, 0);

     }

     @Override

     public void onClick(View arg0) {

         // TODO Auto-generated method stub

         switch (arg0.getId()) {

         case R.id.iv:

             showNumPopu();

             break;

         default:

             break;

         }

     }

     // list的适配器

     private class MyAdapter extends BaseAdapter {

         @Override

         public int getCount() {

             // TODO Auto-generated method stub

             return list.size();

         }

         @Override

         public Object getItem(int arg0) {

             // TODO Auto-generated method stub

             return arg0;

         }

         @Override

         public long getItemId(int arg0) {

             // TODO Auto-generated method stub

             return arg0;

         }

         @Override

         public View getView(final int position, View arg1, ViewGroup arg2) {

             // TODO Auto-generated method stub

             final View view = View.inflate(MainActivity.this,

                     R.layout.item_list, null);

             TextView tv_number = (TextView) view.findViewById(R.id.item_text);

             ImageView iv_delete = (ImageView) view

                     .findViewById(R.id.item_image);

             tv_number.setText(list.get(position));

             iv_delete.setOnClickListener(new OnClickListener() {

                 @Override

                 public void onClick(View arg0) {

                     // TODO Auto-generated method stub

                     Log.d("jiejie", "position " + position);

                     list.remove(position);

                     notifyDataSetChanged();

                     int listviewHeight = view.getHeight() * list.size();

                     popupWindow.update(

                             editText.getWidth(),

                             listviewHeight > popupWindowHight ? popupWindowHight

                                     : listviewHeight);

                     if (list.size() == 0) {

                         imageView.setVisibility(View.INVISIBLE);

                         popupWindow.dismiss();

                     }

                 }

             });

             return view;

         }

     }

 }

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="#000"

    android:orientation="vertical" >

    <RelativeLayout

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="30dp" >

        <EditText

            android:id="@+id/edt_main"

            android:layout_width="180dp"

            android:layout_height="40dp"

            android:hint=""

            android:background="#fff"

            android:paddingRight="20dp" />

        <ImageView

            android:id="@+id/iv"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_alignRight="@id/edt_main"

            android:layout_centerVertical="true"

            android:contentDescription="@null"

            android:padding="5dp"

            android:src="@drawable/spread" />

    </RelativeLayout>

</LinearLayout>