我试图找出使图像随着用户的手指向左或向右拖动以及旋转角度旋转的最佳方法。
float x1 = lastEvent[0] - lastEvent[1];
float y1 = lastEvent[2] - lastEvent[3];
float degrees1 = (float)(Math.atan2(y1, x1));
float x2 = event.getX(0) - event.getX(1);
float y2 = event.getY(0) - event.getY(1);
float degrees2 = (float)(Math.atan2(y2, x2));
float degrees = (float) Math.toDegrees(degrees2-degrees1);
但它并没有像我想要的那样旋转.. 有没有旋转手势的监听器?谢谢