页面不显示导航栏,上托一定的距离显示导航栏.
设置导航栏存在且透明:
1.设置导航栏的透明:
//导航栏透明
self.navigationController.navigationBar.translucent = YES;
//导航栏背景图
UIImage *image = [[UIImage alloc] init];
[self.navigationController.navigationBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
//导航栏下面的线
[self.navigationController.navigationBar setShadowImage:image];
//导航栏透明
self.navigationController.navigationBar.alpha = 0;
2.设置导航栏显示
self.navigationController.navigationBar.translucent = NO;
[self.navigationController.navigationBar setBackgroundImage:nil forBarMetrics:UIBarMetricsDefault];
[self.navigationController.navigationBar setShadowImage:nil];
self.navigationController.navigationBar.alpha = 1;
3.渐变加入动画就好:
[UIView animateWithDuration:1 animations:^{ };
4.自己实现导航栏的模态推出(搜的)
[UIView animateWithDuration:1.5 animations:^{
CATransition* transition = [CATransition animation];
transition.type=kCATransitionPush;//可更改为其他方式
transition.subtype = kCATransitionFromTop;//可更改为其他方式
[self.navigationController.view.layer addAnimation:transition forKey:kCATransition];
[self.navigationController pushViewController:login animated:NO];
}];
