布局文件==》
<?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:orientation="horizontal" ><Buttonandroid:id="@+id/btnTest"android:gravity="center_horizontal"android:layout_width="wrap_content"android:layout_height="wrap_content" android:text="110"/></LinearLayout><?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:orientation="vertical" ><ImageViewandroid:id="@+id/header"android:background="@drawable/eighteen"android:layout_width="wrap_content"android:layout_height="wrap_content" /><Buttonandroid:id="@+id/btnclose"android:layout_width="match_parent"android:layout_height="wrap_content" android:text="关闭"/>
</LinearLayout>代码实现==》
package com.example.mypopupwindow;import android.os.Bundle;
import android.app.Activity;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.PopupWindow;public class MainActivity extends Activity
{@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);// 装载R.layout.acitivity_main对应的界面布局View root = this.getLayoutInflater().inflate(R.layout.popup, null);// 创建PopupWindow对象final PopupWindow popup = new PopupWindow(root, 500, 500);Button btn = (Button) this.findViewById(R.id.btnTest);btn.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){// 以下拉方式显示popup.showAsDropDown(v);// 将PopupWindow显示在指定位置popup.showAtLocation(findViewById(R.id.btnTest), Gravity.CENTER_HORIZONTAL, 200, 200);}});root.findViewById(R.id.btnclose).setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){popup.dismiss();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu){// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}