关于ViewDragHelper

/**             * 经测试left是child距离其父容器左边的距离（父容器的padding也算）,dx是距离其初始位置的相对值，偏左为负             * 偏右为正             * 返回值是child距离父容器左边的距离范围(不能写死)             */            @Override            public int clampViewPositionHorizontal(View child, int left, int dx) {//                Log.e("aaaaaa",left+"aa"+dx);//                return 0;            final int leftBound = getPaddingLeft();                final int rightBound = getWidth() - child.getWidth() - leftBound;                final int newLeft = Math.min(Math.max(left, leftBound), rightBound);                Log.e("aaaaaa", leftBound+"aaaaaa"+rightBound+"aaaaaa"+left+"aaaaaa"+newLeft);                return newLeft;            }