84669 person learning
152542 person learning
20005 person learning
5487 person learning
7821 person learning
359900 person learning
3350 person learning
180660 person learning
48569 person learning
18603 person learning
40936 person learning
1549 person learning
1183 person learning
32909 person learning
走同样的路,发现不同的人生
self.scrollView.delegate = self; - (void)scrollViewDidScroll:(UIScrollView *)scrollView { CGPoint offset = scrollView.contentOffset; if (offset.y < 100.f) { self.navigationController.navigationBar.alpha = 1.f - offset.y / 100.f; self.navigationItem.leftBarButtonItem = ...; self.navigationItem.rightBarButtonItem = ...; } else { self.navigationController.navigationBar.alpha = MIN(1.f, (offset.y - 100.f) / 100.f); self.navigationItem.leftBarButtonItem = ...; self.navigationItem.rightBarButtonItem = ...; } }
就是一个判断滚动条位置,然后元素背景过度!去研究css3过度属性
应该是组合模式 先透明度 最后换图片
就是一个判断滚动条位置,然后元素背景过度!去研究css3过度属性
应该是组合模式 先透明度 最后换图片