ios开发问题小结

呃，代码没带回来，想总结的细节点，有很多竟然一时无法完整想起。因此

现在就想到几点写几点吧。拿到代码后，在持续补充。

1>UIView(UIImageView) 围绕中心旋转

[UIView beginAnimations:nil context:nil];

[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];

[UIView setAnimaionDuration:.1f]; //设置动画时长

photoImg.layer.anchorPoint = CGPointMake(0.5,0.5); //围绕中心旋转

photoImg.transform = CGAffineTransformMakeRotation(M_PI);

[UIView comitAnimations];

2>ios7下，视图布满全屏

{

if( [[UIDevice currentDevice] systemVersion] floatValue] >= 7.0 )

{

CGRect frame = self.navigationController.view.frame;

self.automaticallyAdjustScrollViewInsets = NO;

[self setNeedsStatusBarAppearanceUpdate];

}

}

3>ios状态栏白色字体

[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];

[[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];

[self setNeedsStatusBarAppearanceUpdate];

4>UITableView消除Section的粘滞性(viewForHeadSection随表单滚动)

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {

CGFloat sectionHeaderHeight = 60;

if (scrollView.contentOffset.y<=sectionHeaderHeight&&scrollView.contentOffset.y>=0) {

scrollView.contentInset = UIEdgeInsetsMake(-scrollView.contentOffset.y, 0, 0, 0);

} else if (scrollView.contentOffset.y>=sectionHeaderHeight) {

scrollView.contentInset = UIEdgeInsetsMake(-sectionHeaderHeight, 0, 0, 0);

}

}