急求。。。Scroller问题

部分代码如下                            if (canDragOver()) {//判断是否可以翻页
                                    startAnimation(1200);
                            } else {
                                    mTouch.x = mCornerX - 0.09f;//如果不能翻页就让mTouch返回没有静止时的状态
                                    mTouch.y = mCornerY - 0.09f; // - 0.09f是防止mTouch = 800 或mTouch= 0 要不在这些值时会出现BUG
                            }
                            this.repaint();
                     /******************/
                public void computeScroll() {
                super.computeScroll();
                if (mScroller.computeScrollOffset()) {
                        float x = mScroller.getCurrX();
                        float y = mScroller.getCurrY();
                        mTouch.x = x;
                        mTouch.y = y;
                        repaint();
                }}
        
        
                private void startAnimation(int delayMillis) {
                        int dx, dy;
                        // dx 水平方向滑动的距离，负值会使滚动向左滚动
                        // dy 垂直方向滑动的距离，负值会使滚动向上滚动
                        if (mCornerX > 0) {
                                dx = -(int) (Constant.SCREEN_WIDTH + mTouch.x);
                        } else {
                                dx = (int) (Constant.SCREEN_WIDTH - mTouch.x + Constant.SCREEN_WIDTH);
                        }
                        if (mCornerY > 0) {
                                dy = (int) (Constant.SCREEN_HEIGHT - mTouch.y);
                        } else {
                                dy = (int) (1 - mTouch.y); // 防止mTouch.y最终变为0
                        }
                        mScroller.startScroll((int) mTouch.x, (int) mTouch.y, dx, dy,
                                        delayMillis);
                }
不知道是那里出错了，没有反应求解