iOS如何使下滑手势和scrollview的横向滚动手势不冲突

作者: QYiZHong | 来源:发表于2018-05-26 16:34 被阅读43次

我用到的下滑手势是pan手势

实现协议

UIGestureRecognizerDelegate

里的两个方法

#pragma make - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return NO;
}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
if ([gestureRecognizer isKindOfClass:[UIPanGestureRecognizer class]]) {
    UIPanGestureRecognizer *pan = (UIPanGestureRecognizer *)gestureRecognizer;
    CGPoint point = [pan velocityInView:pan.view];
    if (point.y != 0 && fabs(point.y) > fabs(point.x)) {
        return YES;
    }
}
    return NO;
}

第二个方法是判断pan手势什么时候才响应，这里可以看出来是滑动的y的坐标大于x坐标才return YES 响应