private void init(final Context context) {
        mStarDrawable = new ArrayList<>();
        mInterpolators = new ArrayList<>();
        mStartPoint = new PointF();
        mEndPoint = new PointF();
        mControllPointOne = new PointF();
        mControllPointTwo = new PointF();

        //初始化圖片資源
        mStarDrawable.add(getResources().getDrawable(R.mipmap.heart_red));
        mStarDrawable.add(getResources().getDrawable(R.mipmap.heart_blue));
        mStarDrawable.add(getResources().getDrawable(R.mipmap.heart_yellow));
        mStarDrawable.add(getResources().getDrawable(R.mipmap.heart_green));

        //初始化插補器
        mInterpolators.add(new LinearInterpolator());
        mInterpolators.add(new AccelerateDecelerateInterpolator());
        mInterpolators.add(new AccelerateInterpolator());
        mInterpolators.add(new DecelerateInterpolator());

        ImageView image_heard = new ImageView(context);
        image_heard.setImageDrawable(mStarDrawable.get(0));

        image_heard.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
                LayoutParams.WRAP_CONTENT));
        image_heard.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                //點選之後開始動畫,新增紅心到佈局檔案並開始動畫
                final ImageView image_random = new ImageView(context);
                image_random.setImageDrawable(mStarDrawable.get(random.nextInt(4)));

                image_random.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
                        LayoutParams.WRAP_CONTENT));
                addView(image_random);

                invalidate();

                //開始做動畫效果
                
                BezierTypeEvaluator bezierTypeEvaluator = new BezierTypeEvaluator(mControllPointOne, mControllPointTwo);
            
                ValueAnimator valueAnimator = ValueAnimator.ofObject(bezierTypeEvaluator, mStartPoint, endPointRandom);
                valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
                    @Override
                    public void onAnimationUpdate(ValueAnimator animation) {
                        PointF pointF = (PointF) animation.getAnimatedValue();
                        image_random.setX(pointF.x);
                        image_random.setY(pointF.y);
                    }
                });

                valueAnimator.setDuration(2000);
                valueAnimator.start();

            }
        });
        addView(image_heard);
    }