整体项目结构如图所示:

 

 

MainActivity.java代码下:

package com.hoperun.ray.activity;

import android.app.Activity;

import android.content.Context;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.PopupWindow;

public class MainActivity extends Activity {

 
 private Button btn;
 
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        btn = (Button) findViewById(R.id.btn);
       
        btn.setOnClickListener(new View.OnClickListener() {
   
   public void onClick(View v) {
    //调用弹框函数
    showPopupWindow(MainActivity.this, MainActivity.this.findViewById(R.id.btn));
   }
  });
    }
   
    /**
     * 弹框方法
     * @param context
     * @param parent
     */
    public void showPopupWindow(Context context , View parent){
     LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     //设置弹框布局
     final View vPopupWindow = inflater.inflate(R.layout.tb, null, false);
     final PopupWindow popupWindow = new PopupWindow(vPopupWindow, 300, 300, true);
     
     popupWindow.showAtLocation(parent,Gravity.CENTER,0,0);
    }
}

关闭框口调用PopupWindow.dismiss();

使用到的布局代码:

main.xml

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

<LinearLayout xmlns:android=""
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello"
        />
    <Button
        android:id="@+id/btn"
        android:text="弹框"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        />
</LinearLayout>

弹框布局tb.xml

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

<TableLayout xmlns:android=""
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TableRow>
       <TextView
           android:text="单价"
            android:padding="5dip"/>
        <TextView
            android:text="个数"
            android:padding="3dip"/>
        <TextView
            android:text="总额"
            android:padding="5dip"/>
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/priceTextView" android:layout_width="5dip"
       android:layout_height="wrap_content" />
  <TextView android:id="@+id/countTextView" android:layout_width="3dip"
       android:layout_height="wrap_content" />
  <TextView android:id="@+id/allpriceTextView" android:layout_width="5dip"
       android:layout_height="wrap_content" />
    </TableRow>
    <View                              
        android:layout_height="2dip"
        android:background="#F00" />
    
    <TableRow>
        <TextView
            android:text="请选择支付方式:"
            android:layout_span="3"
            android:background="#FFC0C0C0"
            android:textColor="#f00"
            android:layout_width="fill_parent"/>
    </TableRow>
   
    <TableRow>
        <ImageView/>
        <TextView
            android:text="手机支付"
            android:layout_span="2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"/>
    </TableRow>
   
    <TableRow>
        <ImageView/>
        <TextView
            android:text="信用卡支付"
            android:layout_span="2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"/>
    </TableRow> 
</TableLayout>

效果如下图: