仿饿了么购物车下单动画效果

效果图

[代码]java代码：

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tv_shop_add.setOnClickListener( new OnClickListener() {                    @Override                  public void onClick(View v) {                      // 一个整型数组，用来存储按钮的在屏幕的X、Y坐标                      int [] start_location = new int [ 2 ];                      // 这是获取购买按钮的在屏幕的X、Y坐标（这也是动画开始的坐标）                      v.getLocationInWindow(start_location);                      buyImg = new ImageView(context);                      // 设置buyImg的图片                      buyImg.setImageBitmap(getAddDrawBitMap());                      // 开始执行动画                      setAnim(buyImg, start_location);                        // iscontans(arrayList.get(position));                  }              });

[代码]java代码：

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/**   * 运动的控件   *   * @return   */ public Bitmap getAddDrawBitMap() {      ImageView text = new ImageView(context);      // 运动的控件，样式可以自定义      text.setBackgroundResource(R.drawable.xiaohongdian_shangping);      return convertViewToBitmap(text); }   /**   * 创建动画层   */ private ViewGroup createAnimLayout() {      ViewGroup rootView = (ViewGroup) ((Activity) context).getWindow().getDecorView();      LinearLayout animLayout = new LinearLayout(context);      LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,              LinearLayout.LayoutParams.MATCH_PARENT);      animLayout.setLayoutParams(lp);      animLayout.setId(Integer.MAX_VALUE);      animLayout.setBackgroundResource(android.R.color.transparent);      rootView.addView(animLayout);      return animLayout; }   private View addViewToAnimLayout( final ViewGroup vg, final View view, int [] location) {      int x = location[ 0 ];      int y = location[ 1 ];      LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,              LinearLayout.LayoutParams.WRAP_CONTENT);      lp.leftMargin = x;      lp.topMargin = y;      view.setLayoutParams(lp);      return view; }   /**   * // 开始执行动画   * @param v   * @param start_location   */ private void setAnim( final View v, int [] start_location) {      anim_mask_layout = null ;      anim_mask_layout = createAnimLayout();      // 把动画小球添加到动画层      anim_mask_layout.addView(v);      final View view = addViewToAnimLayout(anim_mask_layout, v, start_location);      // 这是用来存储动画结束位置的X、Y坐标      int [] end_location = new int [ 2 ];      // rl_gouwuche是小球运动的终点 一般是购物车图标      rl_gouwuche.getLocationInWindow(end_location);        // 计算位移      int endX = 0 - start_location[ 0 ] + 40 ; // 动画位移的X坐标      int endY = end_location[ 1 ] - start_location[ 1 ]; // 动画位移的y坐标      TranslateAnimation translateAnimationX = new TranslateAnimation( 0 , endX, 0 , 0 );      translateAnimationX.setInterpolator( new LinearInterpolator());      translateAnimationX.setRepeatCount( 0 ); // 动画重复执行的次数      translateAnimationX.setFillAfter( true );        TranslateAnimation translateAnimationY = new TranslateAnimation( 0 , 0 , 0 , endY);      translateAnimationY.setInterpolator( new AccelerateInterpolator());      translateAnimationY.setRepeatCount( 0 ); // 动画重复执行的次数      translateAnimationX.setFillAfter( true );        AnimationSet set = new AnimationSet( false );      set.setFillAfter( false );      set.addAnimation(translateAnimationY);      set.addAnimation(translateAnimationX);      set.setDuration( 800 ); // 动画的执行时间      view.startAnimation(set);      // 动画监听事件      set.setAnimationListener( new AnimationListener() {          // 动画的开始          @Override          public void onAnimationStart(Animation animation) {              v.setVisibility(View.VISIBLE);          }            @Override          public void onAnimationRepeat(Animation animation) {              // TODO Auto-generated method stub          }            // 动画的结束          @Override          public void onAnimationEnd(Animation animation) {              v.setVisibility(View.GONE);          }      });   }   /**   * 将定义的view装换成 bitmap格式   *   * @param view   * @return   */ public Bitmap convertViewToBitmap(View view) {      view.measure(MeasureSpec.makeMeasureSpec( 0 , MeasureSpec.UNSPECIFIED),              MeasureSpec.makeMeasureSpec( 0 , MeasureSpec.UNSPECIFIED));      view.layout( 0 , 0 , view.getMeasuredWidth(), view.getMeasuredHeight());      view.buildDrawingCache();      Bitmap bitmap = view.getDrawingCache();      return bitmap; }