PopupWindow简单使用

 1 package org.xml.popdemo;
 2 
 3 import ogg.huanxin.huadong.R;
 4 import android.app.Activity;
 5 import android.os.Bundle;
 6 import android.view.View;
 7 import android.view.View.OnClickListener;
 8 import android.widget.Button;
 9 
10 public class MainPopWindow extends Activity implements OnClickListener {
11     private Button popButton;
12     private PopWindowForAttr popWindowForAttr;
13 
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         // TODO Auto-generated method stub
17         super.onCreate(savedInstanceState);
18         super.setContentView(R.layout.main_popwindow);
19         popButton=(Button)super.findViewById(R.id.popbutton);
20         popButton.setOnClickListener(this);
21         popWindowForAttr = new PopWindowForAttr(this);
22     }
23 
24     @Override
25     public void onClick(View v) {
26         // TODO Auto-generated method stub
27         switch (v.getId()) {
28         case R.id.popbutton:
29             popWindowForAttr.showAsDropDown(v);
30             break;
31         default:
32             break;
33 
34         }
35     }
36 }

  1 package org.xml.popdemo;
  2 
  3 import ogg.huanxin.huadong.R;
  4 import android.app.ActionBar.LayoutParams;
  5 import android.content.Context;
  6 import android.graphics.Color;
  7 import android.graphics.drawable.ColorDrawable;
  8 import android.view.Gravity;
  9 import android.view.LayoutInflater;
 10 import android.view.View;
 11 import android.view.View.OnClickListener;
 12 import android.widget.Button;
 13 import android.widget.ImageButton;
 14 import android.widget.PopupWindow;
 15 import android.widget.TextView;
 16 import android.widget.Toast;
 17 import android.widget.PopupWindow.OnDismissListener;
 18 
 19 public class PopWindowForAttr implements OnClickListener, OnDismissListener {
 20     private Context context;
 21     private PopupWindow popupWindow;
 22     private Button addCart, doCart;
 23     private final int AddReduce = 1;
 24     private TextView Popreduce, Popnum, Popadd;
 25     private ImageButton deleteButton;
 26 
 27     public PopWindowForAttr(Context context) {
 28         this.context = context;
 29         // 自定义的一个控件作为显示内容
 30         View contentView = LayoutInflater.from(context).inflate(
 31                 R.layout.popupwindowdemo, null);
 32         //
 33         addCart = (Button) contentView.findViewById(R.id.addCart);
 34         doCart = (Button) contentView.findViewById(R.id.doCart);
 35         Popreduce = (TextView) contentView.findViewById(R.id.pop_reduce);
 36         Popnum = (TextView) contentView.findViewById(R.id.pop_num);
 37         Popadd = (TextView) contentView.findViewById(R.id.pop_add);
 38         deleteButton = (ImageButton) contentView.findViewById(R.id.delete);
 39         // 各组件绑定事件
 40         addCart.setOnClickListener(this);
 41         doCart.setOnClickListener(this);
 42         Popreduce.setOnClickListener(this);
 43         Popadd.setOnClickListener(this);
 44         deleteButton.setOnClickListener(this);
 45         // 将加载的视图view载入PopubWindow,并且设置popupwindow这个组件的动画效果
 46         popupWindow = new PopupWindow(contentView, LayoutParams.MATCH_PARENT,
 47                 LayoutParams.WRAP_CONTENT, true);
 48         // 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
 49         popupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
 50         // 当popWindow消失时的监听
 51         popupWindow.setOnDismissListener(this);
 52     }
 53 
 54     public void showAsDropDown(View v) {
 55         // showAsDropDown(View anchor)：相对某个控件的位置（正左下方），无偏移
 56         // showAsDropDown(View anchor, int xoff, int yoff)：相对某个控件的位置，有偏移
 57         // showAtLocation(View parent, int gravity, int x, int
 58         // 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
 59         popupWindow.showAtLocation(v, Gravity.BOTTOM, 100, 100);
 60         // 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
 61         // 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
 62         popupWindow.setFocusable(true);
 63         //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。
 64         popupWindow.setOutsideTouchable(true);
 65         popupWindow.update();
 66 
 67     }
 68 
 69     // 销毁
 70     @Override
 71     public void onDismiss() {
 72         // TODO Auto-generated method stub
 73         popupWindow.dismiss();
 74     }
 75 
 76     @Override
 77     public void onClick(View arg0) {
 78         // TODO Auto-generated method stub
 79         switch (arg0.getId()) {
 80         case R.id.addCart:
 81             Toast.makeText(context, "添加到购物车", Toast.LENGTH_SHORT).show();
 82             break;
 83         case R.id.doCart:
 84             Toast.makeText(context, "立即购买", Toast.LENGTH_SHORT).show();
 85             break;
 86         case R.id.delete:
 87             onDismiss();
 88             break;
 89         case R.id.pop_reduce:
 90             if (!Popnum.getText().toString().equals("1")) {
 91                 String num_ReduceString = Integer.valueOf(Popnum.getText()
 92                         .toString()) - AddReduce + "";
 93                 Popnum.setText(num_ReduceString);
 94             } else {
 95                 Toast.makeText(context, "您买入的数量不能低于1", Toast.LENGTH_SHORT)
 96                         .show();
 97             }
 98             break;
 99         case R.id.pop_add:
100             if (!Popnum.getText().toString().equals("1000")) {
101                 String numString = Integer.valueOf(Popnum.getText().toString())
102                         + AddReduce + "";
103                 Popnum.setText(numString);
104             }
105             break;
106         default:
107             break;
108         }
109     }
110 }