Android 实现蘑菇街购物车动画效果

package com.kince.mogujie;

import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.PopupWindow;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.TextView;

/**
 * @author kince
 * @category 模仿蘑菇街购物车动画效果 使用Tween动画 
 * @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。
 *        2、弹出的popubWindow变形 希望对这方面了解的朋友告知一下
 *
 */
public class MainActivity extends Activity {

	private ImageView mAnimImageView;
	private TextView mTextView;
	private TextView mNumTextView;
	private Animation mAnimation;
	private PopupWindow mPopupWindow;
    private int goodsNum=0;
    
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.detail_frame_layout);

		mAnimImageView = (ImageView) findViewById(R.id.cart_anim_icon);
		mTextView = (TextView) findViewById(R.id.detail_cart_btn);
		mNumTextView = (TextView) findViewById(R.id.detail_shopping_new);
		mTextView.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				mAnimImageView.setVisibility(View.VISIBLE);
				mAnimImageView.startAnimation(mAnimation);
			}
		});
		mAnimation = AnimationUtils.loadAnimation(this, R.anim.cart_anim);
		mAnimation.setAnimationListener(new AnimationListener() {

			@Override
			public void onAnimationStart(Animation animation) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onAnimationRepeat(Animation animation) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onAnimationEnd(Animation animation) {
				// TODO Auto-generated method stub
				goodsNum++;
				mNumTextView.setText(goodsNum+"");
				mAnimImageView.setVisibility(View.INVISIBLE);
				createPopbWindow();
				mPopupWindow.showAtLocation(mAnimImageView, Gravity.CENTER
						| Gravity.CENTER_HORIZONTAL, 0, 0);
			}
		});

		new Handler().postDelayed(new Runnable() {

			@Override
			public void run() {
				// TODO Auto-generated method stub
				mAnimImageView.setVisibility(View.VISIBLE);
				mAnimImageView.startAnimation(mAnimation);

			}
		}, 1500);
	}

	private void createPopbWindow() {
		LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		View contentview = inflater.inflate(R.layout.cart_popup_layout, null);
		contentview.setFocusable(true);
		contentview.setFocusableInTouchMode(true);
		mPopupWindow = new PopupWindow(this);
		mPopupWindow.setContentView(contentview);
		mPopupWindow.setBackgroundDrawable(new ColorDrawable(0x00000000));
		mPopupWindow.setWidth(LayoutParams.WRAP_CONTENT);
		mPopupWindow.setHeight(LayoutParams.WRAP_CONTENT);
		mPopupWindow.setFocusable(true);
		mPopupWindow.setOutsideTouchable(false);
		mPopupWindow.setAnimationStyle(R.style.anim_menu_bottombar);
	}

}

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <set>
        <scale
            android:duration="300"
            android:fromXScale="1.0"
            android:fromYScale="1.0"
            android:pivotX="50.0%"
            android:pivotY="50.0%"
            android:toXScale="1.4"
            android:toYScale="1.4" />
        <scale
            android:duration="300"
            android:fromXScale="1.4"
            android:fromYScale="1.4"
            android:pivotX="50.0%"
            android:pivotY="50.0%"
            android:startOffset="300"
            android:toXScale="1.0"
            android:toYScale="1.0" />
    </set>
    <set>
        <translate
            android:duration="700"
            android:fromXDelta="0.0"
            android:fromYDelta="0.0"
            android:startOffset="600"
            android:toXDelta="75.0%p"
            android:toYDelta="-109.99756%p" />

        <alpha
            android:duration="700"
            android:fromAlpha="1.0"
            android:startOffset="600"
            android:toAlpha="0.1" />

        <scale
            android:duration="700"
            android:fromXScale="1.0"
            android:fromYScale="1.0"
            android:pivotX="50.0%"
            android:pivotY="50.0%"
            android:startOffset="600"
            android:toXScale="0.4"
            android:toYScale="0.4" />
    </set>

</set>