控制Gallery 速度

// 实现短距离滑动 @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { int kEvent; if (isScrollingLeft(e1, e2)) { // Check if scrolling left kEvent = KeyEvent.KEYCODE_DPAD_LEFT; } else { // Otherwise scrolling right kEvent = KeyEvent.KEYCODE_DPAD_RIGHT; } onKeyDown(kEvent, null); return true; } private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2) { return e2.getX() > e1.getX(); }