android添加购物车动画实现

来源：互联网发布：金牛考勤软件初始密码编辑：程序博客网时间：2024/06/07 09:44

商品列表Adapter

[java] view plain copy
   
   
import android.content.Context;  
import android.graphics.drawable.Drawable;  
import android.view.LayoutInflater;  
import android.view.View;  
import android.view.ViewGroup;  
import android.widget.BaseAdapter;  
import android.widget.Button;  
import android.widget.ImageView;  
import android.widget.LinearLayout;  
/** 
 * 商品列表Adapter 
 * @author antkingwei 
 * 
 */  
public class GoodAdapter extends BaseAdapter{  
    private Context mContext;  
    private LayoutInflater layoutInflater;  
    private HolderClickListener mHolderClickListener;  
    final class ViewHolder {  
        ImageView imgview;  
        Button button;  
    }  
    public GoodAdapter(Context context){  
        this.mContext = context;  
        layoutInflater = LayoutInflater.from(mContext);  
    }  
   
       
    @Override  
    public int getCount() {  
        // TODO Auto-generated method stub  
        return 16;  
    }  
   
    @Override  
    public Object getItem(int position) {  
        // TODO Auto-generated method stub  
        return null;  
    }  
   
    @Override  
    public long getItemId(int position) {  
        // TODO Auto-generated method stub  
        return position;  
    }  
   
    @Override  
    public View getView(int position, View convertView, ViewGroup parent) {  
        // TODO Auto-generated method stub  
        final int selectedId = position;  
        final ViewHolder viewHolder;  
        if(convertView ==null){  
            viewHolder = new ViewHolder();  
            convertView = layoutInflater.inflate(R.layout.adapter_listview, null);  
            viewHolder.imgview = (ImageView)convertView.findViewById(R.id.item_img);  
            viewHolder.button = (Button)convertView.findViewById(R.id.item_button);  
            convertView.setTag(viewHolder);  
        }else{  
            viewHolder =(ViewHolder)convertView.getTag();  
        }  
        viewHolder.button.setOnClickListener(new View.OnClickListener() {  
               
            @Override  
            public void onClick(View v) {  
                // TODO Auto-generated method stub  
                if(mHolderClickListener!=null){  
                    int[] start_location = new int[2];  
                    viewHolder.imgview.getLocationInWindow(start_location);//获取点击商品图片的位置  
                    Drawable drawable = viewHolder.imgview.getDrawable();//复制一个新的商品图标  
                    mHolderClickListener.onHolderClick(drawable,start_location);  
                }  
            }  
        });  
        return convertView;  
    }  
    public void SetOnSetHolderClickListener(HolderClickListener holderClickListener){  
        this.mHolderClickListener = holderClickListener;  
    }  
    public interface HolderClickListener{  
        public void onHolderClick(Drawable drawable,int[] start_location);  
    }  
   
}  

活动类

[java] view plain copy
package com.example.addshopcart;  
import com.example.addshopcart.GoodAdapter.HolderClickListener;  
import android.os.Bundle;  
import android.os.Handler;  
import android.os.Message;  
import android.app.Activity;  
import android.content.Context;  
import android.graphics.drawable.Drawable;  
import android.view.Menu;  
import android.view.View;  
import android.view.ViewGroup;  
import android.view.animation.Animation;  
import android.view.animation.Animation.AnimationListener;  
import android.view.animation.AnimationSet;  
import android.view.animation.RotateAnimation;  
import android.view.animation.ScaleAnimation;  
import android.view.animation.TranslateAnimation;  
import android.widget.Button;  
import android.widget.FrameLayout;  
import android.widget.ImageView;  
import android.widget.ListView;  
/** 
 *  
 * @author antkingwei 
 * 
 */  
public class MainActivity extends Activity {  
    private ListView listView;  
    private Button cart_btn;  
    private GoodAdapter goodAdapter;  
    //动画时间  
    private int AnimationDuration = 1000;  
    //正在执行的动画数量  
    private int number = 0;  
    //是否完成清理  
    private boolean isClean = false;  
    private FrameLayout animation_viewGroup;  
    private Handler myHandler = new Handler(){  
      public void handleMessage(Message msg){  
          switch(msg.what){  
          case 0:  
              //用来清除动画后留下的垃圾  
              try{  
                  animation_viewGroup.removeAllViews();  
                  }catch(Exception e){  
                         
                  }  
                           
                  isClean = false;  
                     
              break;  
           default:  
                  break;  
          }  
      }  
    };  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
        listView = (ListView)this.findViewById(R.id.listview);  
        cart_btn = (Button)this.findViewById(R.id.button);  
        animation_viewGroup = createAnimLayout();  
        goodAdapter = new GoodAdapter(this);  
        goodAdapter.SetOnSetHolderClickListener(new HolderClickListener(){  
   
            @Override  
            public void onHolderClick(Drawable drawable,int[] start_location) {  
                // TODO Auto-generated method stub  
                 doAnim(drawable,start_location);  
                         
                   
            }  
               
        });  
        listView.setAdapter(goodAdapter);  
    }  
       
    private void doAnim(Drawable drawable,int[] start_location){  
        if(!isClean){  
            setAnim(drawable,start_location);  
        }else{  
            try{  
              animation_viewGroup.removeAllViews();  
              isClean = false;  
              setAnim(drawable,start_location);  
            }catch(Exception e){  
                e.printStackTrace();  
            }  
            finally{  
                isClean = true;  
            }  
        }  
    }  
    /** 
     * @Description: 创建动画层 
     * @param 
     * @return void 
     * @throws 
     */  
    private FrameLayout createAnimLayout(){  
        ViewGroup rootView = (ViewGroup)this.getWindow().getDecorView();  
        FrameLayout animLayout = new FrameLayout(this);  
        FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,FrameLayout.LayoutParams.MATCH_PARENT);  
        animLayout.setLayoutParams(lp);  
        animLayout.setBackgroundResource(android.R.color.transparent);  
        rootView.addView(animLayout);  
        return animLayout;  
           
    }  
   
    /** 
     * @deprecated 将要执行动画的view 添加到动画层 
     * @param vg 
     *        动画运行的层 这里是frameLayout 
     * @param view 
     *        要运行动画的View 
     * @param location 
     *        动画的起始位置 
     * @return 
     */  
    private View addViewToAnimLayout(ViewGroup vg,View view,int[] location){  
        int x = location[0];  
        int y = location[1];  
        vg.addView(view);  
        FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(  
                dip2px(this,90),dip2px(this,90));  
        lp.leftMargin = x;  
        lp.topMargin = y;  
        view.setPadding(5, 5, 5, 5);  
        view.setLayoutParams(lp);  
           
        return view;  
    }  
    /** 
     * dip，dp转化成px 用来处理不同分辨路的屏幕 
     * @param context 
     * @param dpValue 
     * @return 
     */  
    private int dip2px(Context context,float dpValue){  
        float scale = context.getResources().getDisplayMetrics().density;  
        return (int)(dpValue*scale +0.5f);  
    }  
       
   /** 
    * 动画效果设置 
    * @param drawable 
    *       将要加入购物车的商品 
    * @param start_location 
    *        起始位置 
    */  
   private void setAnim(Drawable drawable,int[] start_location){  
         
         
       Animation mScaleAnimation = new ScaleAnimation(1.5f,0.0f,1.5f,0.0f,Animation.RELATIVE_TO_SELF,0.1f,Animation.RELATIVE_TO_SELF,0.1f);  
       mScaleAnimation.setDuration(AnimationDuration);  
       mScaleAnimation.setFillAfter(true);  
          
   
       final ImageView iview = new ImageView(this);  
       iview.setImageDrawable(drawable);  
       final View view = addViewToAnimLayout(animation_viewGroup,iview,start_location);  
       view.setAlpha(0.6f);  
          
       int[] end_location = new int[2];  
       cart_btn.getLocationInWindow(end_location);  
       int endX = end_location[0];  
       int endY = end_location[1]-start_location[1];  
          
       Animation mTranslateAnimation = new TranslateAnimation(0,endX,0,endY);  
       Animation mRotateAnimation = new RotateAnimation(0, 180, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);  
       mRotateAnimation.setDuration(AnimationDuration);  
       mTranslateAnimation.setDuration(AnimationDuration);  
       AnimationSet mAnimationSet = new AnimationSet(true);  
   
       mAnimationSet.setFillAfter(true);  
       mAnimationSet.addAnimation(mRotateAnimation);  
       mAnimationSet.addAnimation(mScaleAnimation);  
       mAnimationSet.addAnimation(mTranslateAnimation);  
          
       mAnimationSet.setAnimationListener(new AnimationListener(){  
           
        @Override  
        public void onAnimationStart(Animation animation) {  
            // TODO Auto-generated method stub  
            number++;  
        }  
   
        @Override  
        public void onAnimationEnd(Animation animation) {  
            // TODO Auto-generated method stub  
             
            number--;  
            if(number==0){  
                isClean = true;  
                myHandler.sendEmptyMessage(0);  
            }  
               
        }  
   
        @Override  
        public void onAnimationRepeat(Animation animation) {  
            // TODO Auto-generated method stub  
               
        }  
              
       });  
       view.startAnimation(mAnimationSet);  
         
   }  
   /** 
    * 内存过低时及时处理动画产生的未处理冗余 
    */  
    @Override  
   public void onLowMemory() {  
    // TODO Auto-generated method stub  
        isClean = true;  
        try{  
            animation_viewGroup.removeAllViews();  
        }catch(Exception e){  
            e.printStackTrace();  
        }  
        isClean = false;  
     super.onLowMemory();  
   }  
       
    @Override  
    public 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;  
    }  
   
}  

activity_main.xml

[html] view plain copy
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    android:paddingBottom="@dimen/activity_vertical_margin"  
    android:paddingLeft="@dimen/activity_horizontal_margin"  
    android:paddingRight="@dimen/activity_horizontal_margin"  
    android:paddingTop="@dimen/activity_vertical_margin"  
    tools:context=".MainActivity" >  
   
    <ListView  
        android:layout_width="match_parent"  
        android:layout_height="match_parent"  
        android:id="@+id/listview"  
        ></ListView>  
    <Button  
        android:layout_alignBottom="@+id/listview"  
        android:layout_centerHorizontal="true"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:id="@+id/button"  
        android:text="购物车"  
        />  
   
</RelativeLayout>  

AdapterItem布局

[html] view plain copy
<?xml version="1.0" encoding="utf-8"?>  
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
     >  
    <ImageView  
        android:id="@+id/item_img"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:src="@drawable/ic_launcher"  
        android:layout_alignParentLeft="true"  
        />  
    <Button  
       android:id="@+id/item_button"  
       android:layout_width="wrap_content"  
       android:layout_height="wrap_content"  
       android:layout_alignParentRight="true"  
       android:text="添加"  
       >  
    </Button>  
   
</RelativeLayout>  

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