Android 实现蘑菇街购物车动画效果

浏览数：21 / 时间：2015年06月11日

1.在蘑菇街购物当中有这个这种效果。

商品添加到顶端购物篮里面，其实就是一连串Tween动画。

2.这个动画的思路是：

　　将购物篮的图片先隐藏在屏幕的中间，当点击立即购买按钮进行scale变化由1.0->1.4在由1.4->1.0的下效果。然后translate和Alpha等动画集合的执行。对动画进行监听，当动画执行完成后，创建一个自定义的popwindow展现出来进行确定。

代码如下：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <set xmlns:android="http://schemas.android.com/apk/res/android" >
 3 
 4     <set>
 5         <scale
 6             android:duration="300"
 7             android:fromXScale="1.0"
 8             android:fromYScale="1.0"
 9             android:pivotX="50.0%"
10             android:pivotY="50.0%"
11             android:toXScale="1.4"
12             android:toYScale="1.4" />
13         <scale
14             android:duration="300"
15             android:fromXScale="1.4"
16             android:fromYScale="1.4"
17             android:pivotX="50.0%"
18             android:pivotY="50.0%"
19             android:startOffset="300"
20             android:toXScale="1.0"
21             android:toYScale="1.0" />
22     </set>
23     <set>
24         <translate
25             android:duration="700"
26             android:fromXDelta="0.0"
27             android:fromYDelta="0.0"
28             android:startOffset="600"
29             android:toXDelta="75.0%p"
30             android:toYDelta="-109.99756%p" />
31 
32         <alpha
33             android:duration="700"
34             android:fromAlpha="1.0"
35             android:startOffset="600"
36             android:toAlpha="0.1" />
37 
38         <scale
39             android:duration="700"
40             android:fromXScale="1.0"
41             android:fromYScale="1.0"
42             android:pivotX="50.0%"
43             android:pivotY="50.0%"
44             android:startOffset="600"
45             android:toXScale="0.4"
46             android:toYScale="0.4" />
47     </set>
48 
49 </set>

Activity代码：

  1 package com.kince.mogujie;
  2 
  3 import android.app.Activity;
  4 import android.content.Context;
  5 import android.graphics.drawable.ColorDrawable;
  6 import android.os.Bundle;
  7 import android.os.Handler;
  8 import android.view.Gravity;
  9 import android.view.LayoutInflater;
 10 import android.view.View;
 11 import android.view.View.OnClickListener;
 12 import android.view.animation.Animation;
 13 import android.view.animation.Animation.AnimationListener;
 14 import android.view.animation.AnimationUtils;
 15 import android.widget.ImageView;
 16 import android.widget.PopupWindow;
 17 import android.widget.RelativeLayout.LayoutParams;
 18 import android.widget.TextView;
 19 
 20 /**
 21  * @author kince
 22  * @category 模仿蘑菇街购物车动画效果 使用Tween动画 
 23  * @issue 1、第一次执行动画效果图片放大效果明显，之后放大效果不明显，蘑菇街也有这样的问题。
 24  *        2、弹出的popubWindow变形 希望对这方面了解的朋友告知一下
 25  *
 26  */
 27 public class MainActivity extends Activity {
 28 
 29     private ImageView mAnimImageView;
 30     private TextView mTextView;
 31     private TextView mNumTextView;
 32     private Animation mAnimation;
 33     private PopupWindow mPopupWindow;
 34     private int goodsNum=0;
 35     
 36     @Override
 37     protected void onCreate(Bundle savedInstanceState) {
 38         super.onCreate(savedInstanceState);
 39         setContentView(R.layout.detail_frame_layout);
 40 
 41         mAnimImageView = (ImageView) findViewById(R.id.cart_anim_icon);
 42         mTextView = (TextView) findViewById(R.id.detail_cart_btn);
 43         mNumTextView = (TextView) findViewById(R.id.detail_shopping_new);
 44         mTextView.setOnClickListener(new OnClickListener() {
 45 
 46             @Override
 47             public void onClick(View v) {
 48                 // TODO Auto-generated method stub
 49                 mAnimImageView.setVisibility(View.VISIBLE);
 50                 mAnimImageView.startAnimation(mAnimation);
 51             }
 52         });
 53         mAnimation = AnimationUtils.loadAnimation(this, R.anim.cart_anim);
 54         mAnimation.setAnimationListener(new AnimationListener() {
 55 
 56             @Override
 57             public void onAnimationStart(Animation animation) {
 58                 // TODO Auto-generated method stub
 59 
 60             }
 61 
 62             @Override
 63             public void onAnimationRepeat(Animation animation) {
 64                 // TODO Auto-generated method stub
 65 
 66             }
 67 
 68             @Override
 69             public void onAnimationEnd(Animation animation) {
 70                 // TODO Auto-generated method stub
 71                 goodsNum++;
 72                 mNumTextView.setText(goodsNum+"");
 73                 mAnimImageView.setVisibility(View.INVISIBLE);
 74                 createPopbWindow();
 75                 mPopupWindow.showAtLocation(mAnimImageView, Gravity.CENTER
 76                         | Gravity.CENTER_HORIZONTAL, 0, 0);
 77             }
 78         });
 79 
 80         new Handler().postDelayed(new Runnable() {
 81 
 82             @Override
 83             public void run() {
 84                 // TODO Auto-generated method stub
 85                 mAnimImageView.setVisibility(View.VISIBLE);
 86                 mAnimImageView.startAnimation(mAnimation);
 87 
 88             }
 89         }, 1500);
 90     }
 91 
 92     private void createPopbWindow() {
 93         LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 94         View contentview = inflater.inflate(R.layout.cart_popup_layout, null);
 95         contentview.setFocusable(true);
 96         contentview.setFocusableInTouchMode(true);
 97         mPopupWindow = new PopupWindow(this);
 98         mPopupWindow.setContentView(contentview);
 99         mPopupWindow.setBackgroundDrawable(new ColorDrawable(0x00000000));
100         mPopupWindow.setWidth(LayoutParams.WRAP_CONTENT);
101         mPopupWindow.setHeight(LayoutParams.WRAP_CONTENT);
102         mPopupWindow.setFocusable(true);
103         mPopupWindow.setOutsideTouchable(false);
104         mPopupWindow.setAnimationStyle(R.style.anim_menu_bottombar);
105     }
106 
107 }