最近一直在總結之前寫過的一些功能，今年就記錄一下之前實現的加入購物車有動畫

1.點選的位置是開始位置

2.購物車圖片是結束位置

3.點選加入的時候獲取開始位置座標，並獲取動畫圖片

4.加入購物車成功後，開始傳送handle 執行動畫

下面直接上程式碼：

private int[] startLocation;
private ImageView ball;// 小圓點
private ViewGroup anim_mask_layout;//動畫層
private Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        switch (msg.what) {
            case 0:
                setAnim(ball, startLocation);// 開始執行動畫
                break;
            case 4:
                int page1 = (Integer) msg.obj;
                viewPager.setCurrentItem(page1);
                break;
        }
    }
};
 

//彈出動畫
startLocation = new int[2];// 一個整型陣列，用來儲存按鈕的在螢幕的X、Y座標
view.getLocationInWindow(startLocation);// 這是獲取購買按鈕的在螢幕的X、Y座標（這也是動畫開始的座標）
ball = new ImageView(MakerApplyProductActivity.this);// buyImg是動畫的圖片，我的是一個小球（R.drawable.sign）

ball.setLayoutParams(new ViewGroup.LayoutParams(80, 80));
//    ball.setImageResource(R.drawable.mall_cart);// 設定buyImg的圖片
GlideUtils.loadPic(MakerApplyProductActivity.this,
        item.get商品主圖(),
        ball);
 

 new Thread(new Runnable() {
                                    @Override
                                    public void run() {
                                        Message msg = new Message();
                                        msg.arg1 = 0;
                                        msg.obj = tab;
//                                            handler.sendEmptyMessage(0);
                                        handler.sendMessage(msg);
                                    }
                                }).start();

                            }
 

 private void setAnim(final View v, int[] startLocation) {

        anim_mask_layout = null;
        anim_mask_layout = createAnimLayout();
        anim_mask_layout.addView(v);//把動畫小球新增到動畫層
        final View view = addViewToAnimLayout(anim_mask_layout, v,
                startLocation);
        int[] endLocation = new int[2];// 儲存動畫結束位置的X、Y座標

//        tab.getTabAt(tab.getSelectedTabPosition() + 1).getLocationInWindow(endLocation);// re_zhongcai_tanchu是那個拋物線最後掉落的控制元件
        tab.getLocationInWindow(endLocation);

        // 計算位移
        int endX = 0 - startLocation[0] + 250;// 動畫位移的X座標
        int endY = endLocation[1] - startLocation[1];// 動畫位移的y座標
        TranslateAnimation translateAnimationX = new TranslateAnimation(0,
                endX, 0, 0);
        translateAnimationX.setInterpolator(new LinearInterpolator());
        translateAnimationX.setRepeatCount(0);// 動畫重複執行的次數
        translateAnimationX.setFillAfter(true);

        TranslateAnimation translateAnimationY = new TranslateAnimation(0, 0,
                0, endY);
        translateAnimationY.setInterpolator(new AccelerateInterpolator());
        translateAnimationY.setRepeatCount(0);// 動畫重複執行的次數
        translateAnimationX.setFillAfter(true);

        final AnimationSet set = new AnimationSet(false);
        set.setFillAfter(false);
        set.addAnimation(translateAnimationY);
        set.addAnimation(translateAnimationX);
        set.setDuration(1000);// 動畫的執行時間
        view.startAnimation(set);
        // 動畫監聽事件
        set.setAnimationListener(new Animation.AnimationListener() {
            // 動畫的開始
            @Override
            public void onAnimationStart(Animation animation) {
                v.setVisibility(View.VISIBLE);
                //    Log.e("動畫","asdasdasdasd");
            }

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

            // 動畫的結束
            @Override
            public void onAnimationEnd(Animation animation) {
                v.setVisibility(View.GONE);
                set.cancel();
                animation.cancel();
//                anim_mask_layout.removeView(v);
            }
        });

    }

    /**
     * @param
     * @return void
     * @throws
     * @Description: 建立動畫層
     */
    private ViewGroup createAnimLayout() {
//        final Dialog dialog = new Dialog(context, R.style.dialogStyle);
//        Window window = dialog.getWindow();
        ViewGroup rootView = (ViewGroup) this.getWindow().getDecorView();
//        if(rootView != null) rootView.removeAllViews();
        LinearLayout animLayout = new LinearLayout(this);
        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 parent, 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;
    }