#pragma mark - ScrollowDelegate
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
double contentOffY = scrollView.contentOffset.y;
if (contentOffY >=0) {
[self setFrontPageNavBarAndStateHide:contentOffY/64];
}else {
[self setFrontPageNavBarAndStateHide:0];
}
}
-(void)setFrontPageNavBarAndStateHide:(CGFloat)progress{
if (progress > 0) {
self.navigationController.navigationBar.transform = CGAffineTransformTranslate(CGAffineTransformIdentity, 0, -(self.navigationController.navigationBar.bounds.size.height + 20)*progress);
}else {
self.navigationController.navigationBar.transform = CGAffineTransformTranslate(CGAffineTransformIdentity, 0, 0);
}
}
对于tableview 或者 scrollview 我们明明设置他的坐标从（0，0）开始却发现他是从导航栏下面开始，这是iOS7以后的新特性，可以重写
- (void)viewDidLayoutSubviews {
[super viewDidLayoutSubviews];
self.view.frame = CGRectMake(0, 0, kScreenWidth, kScreenHeight);
}