针对ScreenShotBack的疑问

无意间看到文明大神的 ScreenShotBack的 全屏返回，截图手势返回，景深效果，类似斗鱼、天天快报、腾讯新闻等APP的手势返回。

感觉实现的效果非常好， 本人非常喜欢今日头条也喜欢他的全屏返回手势的效果

先来体验一下文明大神的效果

文明效果.gif

效果非常好, 但是有一个待完善的东西是: 我们在全屏返回详情页面的时候，发现tableView的数据可以上下滑动, 这是我们不愿意看到的

自己针对这种情况做了修改
BaseNavigationController.m 中的

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    NSLog(@"shouldRecognizeSimultaneouslyWithGestureRecognizer---%@", otherGestureRecognizer);
    if ([otherGestureRecognizer isKindOfClass:NSClassFromString(@"UIScrollViewPanGestureRecognizer")] || [otherGestureRecognizer isKindOfClass:NSClassFromString(@"UIPanGestureRecognizer")]|| [otherGestureRecognizer isKindOfClass:NSClassFromString(@"UIScrollViewPagingSwipeGestureRecognizer")]){
        //冲突要有两个，二者不可兼得
        UIView *aView = otherGestureRecognizer.view;
        if ([aView isKindOfClass:[UIScrollView class]] && [otherGestureRecognizer isKindOfClass:[UIPanGestureRecognizer class]]) {
            UIScrollView *sv = (UIScrollView *)aView;
            CGFloat svWidth = sv.contentSize.width;
            NSInteger subViewsNum = svWidth/[UIScreen mainScreen].bounds.size.width;
            
            UIPanGestureRecognizer *panGest = (UIPanGestureRecognizer *)otherGestureRecognizer;
            CGPoint translation = [panGest translationInView:self.view];
            //设置左滑和右滑的情况
            // 右滑的情况
            if (translation.x > 0){
                // 如果是scrollView多视图  类似附近 广场 推荐的滚动
                if((sv.contentOffset.x==0) && (subViewsNum > 1) ){
                    return YES;
                }
            }else{
                // tableView的左滑
                if ((sv.contentOffset.x==0) && (subViewsNum == 1)){
                    return YES;
                }
            }
        }
    }
    return NO;
}

转机

联系到作者文明大神, 给出了较好的解决方案。

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    NSLog(@"shouldRecognizeSimultaneouslyWithGestureRecognizer---%@", otherGestureRecognizer);
    if ([otherGestureRecognizer isKindOfClass:NSClassFromString(@"UIScrollViewPanGestureRecognizer")] || [otherGestureRecognizer isKindOfClass:NSClassFromString(@"UIPanGestureRecognizer")]|| [otherGestureRecognizer isKindOfClass:NSClassFromString(@"UIScrollViewPagingSwipeGestureRecognizer")]){
        //冲突要有两个，二者不可兼得
        UIView *aView = otherGestureRecognizer.view;
        if ([aView isKindOfClass:[UIScrollView class]] && [otherGestureRecognizer isKindOfClass:[UIPanGestureRecognizer class]]) {
            UIScrollView *sv = (UIScrollView *)aView;
            
            //设置左滑和右滑的情况
            // 右滑的情况
            
            // 如果是scrollView多视图  类似附近 广场 推荐的滚动
            if([sv isKindOfClass:[UITableView class]]){
                return NO;
            }
            // 如果是scrollView多视图  类似附近 广场 推荐的滚动
            if(sv.contentOffset.x==0){
                return YES;
            }
            
            
        }
    }
    return NO;
}

感觉现在我们解决方法 并不好 所以还望各位大神可以给出指导意见！ 小弟不胜感激！ 修改后的代码在我的gitHub上 SmallTwoInn/ScreenShotBack

晚上吧自己修改这个问题的心理路程好好记录下！

Gesture Recognizers与触摸事件分发

如何判断UIPanGestureRecognizer的拖动方向

ScreenShotBack