使用horizantalScrollView滚动时更改中心项目的大小

// 获取horizontalScrollView实例
HorizontalScrollView horizontalScrollView = findViewById(R.id.horizontalScrollView);

// 获取子视图容器
LinearLayout linearLayout = findViewById(R.id.linearLayout);

// 监听horizontalScrollView的滚动事件
horizontalScrollView.setOnScrollChangeListener(new View.OnScrollChangeListener() {
    @Override
    public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
        // 计算中心项目的位置
        int centerX = scrollX + horizontalScrollView.getWidth() / 2;

        // 遍历子视图容器中的子视图
        for (int i = 0; i < linearLayout.getChildCount(); i++) {
            View childView = linearLayout.getChildAt(i);
            int childLeft = childView.getLeft();
            int childRight = childView.getRight();

            // 判断中心项目是否在当前子视图的范围内
            if (centerX >= childLeft && centerX <= childRight) {
                // 计算中心项目的大小
                int centerWidth = childView.getWidth() * 2;
                int centerHeight = childView.getHeight() * 2;

                // 修改中心项目的布局参数
                LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) childView.getLayoutParams();
                layoutParams.width = centerWidth;
                layoutParams.height = centerHeight;
                childView.setLayoutParams(layoutParams);
            }
        }
    }
});