利用UIPanGestureRecognizer 判断手势滑动方向

/**

• 添加平移手势
• @param view
  */

• (void)addTapGestureWithView:(UIView *)view
  {

  UIPanGestureRecognizer *recognizer = [[UIPanGestureRecognizer alloc]
  initWithTarget:self action:@selector(handleSwipe:)];
  [self.view addGestureRecognizer:recognizer];
  [recognizer release];
  }

/**

• 平移手势响应事件
• @param swipe swipe description
  */

• (void)handleSwipe:(UIPanGestureRecognizer *)swipe
  {

  if (swipe.state == UIGestureRecognizerStateChanged) {
  [self commitTranslation:[swipe translationInView:self.view]];
  }
  }

/**

• 判断手势方向
• @param translation translation description
  */

• (void)commitTranslation:(CGPoint)translation
  {

  CGFloat absX = fabs(translation.x);
  CGFloat absY = fabs(translation.y);

  // 设置滑动有效距离
  if (MAX(absX, absY) < 10)
  return;

if (absX > absY ) {
    
    if (translation.x<0) {
        
        //向左滑动
    }else{
    
        //向右滑动
    }
  
} else if (absY > absX) {
    if (translation.y<0) {
        
        //向上滑动
    }else{
        
        //向下滑动
    }
}

}