我有一个基于导航的应用程序,我想改变推送和弹出动画的动画。我该怎么做呢?
编辑2018
这个问题有很多答案,现在已经有很长一段时间了,我重新选择了我认为最相关的答案。如果有人有不同的想法,请在评论中告诉我
我有一个基于导航的应用程序,我想改变推送和弹出动画的动画。我该怎么做呢?
编辑2018
这个问题有很多答案,现在已经有很长一段时间了,我重新选择了我认为最相关的答案。如果有人有不同的想法,请在评论中告诉我
当前回答
I found a mildly recursive way to do this that works for my purposes. I have an instance variable BOOL that I use to block the normal popping animation and substitute my own non-animated pop message. The variable is initially set to NO. When the back button is tapped, the delegate method sets it to YES and sends a new non-animated pop message to the nav bar, thereby calling the same delegate method again, this time with the variable set to YES. With the variable is set to YES, the delegate method sets it to NO and returns YES to allow the non-animated pop occur. After the second delegate call returns, we end up back in the first one, where NO is returned, blocking the original animated pop! It's actually not as messy as it sounds. My shouldPopItem method looks like this:
- (BOOL)navigationBar:(UINavigationBar *)navigationBar shouldPopItem:(UINavigationItem *)item
{
if ([[navigationBar items] indexOfObject:item] == 1)
{
[expandedStack restack];
}
if (!progPop)
{
progPop = YES;
[navBar popNavigationItemAnimated:NO];
return NO;
}
else
{
progPop = NO;
return YES;
}
}
对我有用。
其他回答
@Magnus回答,只有Swift(2.0)才会这样
let transition = CATransition()
transition.duration = 0.5
transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromTop
self.navigationController!.view.layer.addAnimation(transition, forKey: nil)
let writeView : WriteViewController = self.storyboard?.instantiateViewControllerWithIdentifier("WriteView") as! WriteViewController
self.navigationController?.pushViewController(writeView, animated: false)
旁注:
你也可以用Segue做这个,只需要在prepareForSegue或shouldPerformSegueWithIdentifier中实现。但是,这也会保留默认动画。要解决这个问题,你必须转到故事板,单击Segue,取消选中“Animates”框。但这将限制你的应用在IOS 9.0及以上(至少当我在Xcode 7中这样做时)。
在segue中,最后两行应该替换为:
self.navigationController?.popViewControllerAnimated(false)
即使我设为false,它还是会忽略它。
从示例应用程序中,可以看到这种变化。 https://github.com/mpospese/MPFoldTransition/
#pragma mark - UINavigationController(MPFoldTransition)
@implementation UINavigationController(MPFoldTransition)
//- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
- (void)pushViewController:(UIViewController *)viewController foldStyle:(MPFoldStyle)style
{
[MPFoldTransition transitionFromViewController:[self visibleViewController]
toViewController:viewController
duration:[MPFoldTransition defaultDuration]
style:style
completion:^(BOOL finished) {
[self pushViewController:viewController animated:NO];
}
];
}
- (UIViewController *)popViewControllerWithFoldStyle:(MPFoldStyle)style
{
UIViewController *toController = [[self viewControllers] objectAtIndex:[[self viewControllers] count] - 2];
[MPFoldTransition transitionFromViewController:[self visibleViewController]
toViewController:toController
duration:[MPFoldTransition defaultDuration]
style:style
completion:^(BOOL finished) {
[self popViewControllerAnimated:NO];
}
];
return toController;
}
意识到这是一个老问题。我仍然想张贴这个答案,因为我有一些问题弹出几个viewcontroller与建议的答案。我的解决方案是子类UINavigationController和覆盖所有的弹出和推方法。
翻转导航控制器.h
@interface FlippingNavigationController : UINavigationController
@end
FlippingNavigationController.m:
#import "FlippingNavigationController.h"
#define FLIP_DURATION 0.5
@implementation FlippingNavigationController
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
[UIView transitionWithView:self.view
duration:animated?FLIP_DURATION:0
options:UIViewAnimationOptionCurveEaseInOut | UIViewAnimationOptionTransitionFlipFromRight
animations:^{ [super pushViewController:viewController
animated:NO]; }
completion:nil];
}
- (UIViewController *)popViewControllerAnimated:(BOOL)animated
{
return [[self popToViewController:[self.viewControllers[self.viewControllers.count - 2]]
animated:animated] lastObject];
}
- (NSArray *)popToRootViewControllerAnimated:(BOOL)animated
{
return [self popToViewController:[self.viewControllers firstObject]
animated:animated];
}
- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated
{
__block NSArray* viewControllers = nil;
[UIView transitionWithView:self.view
duration:animated?FLIP_DURATION:0
options:UIViewAnimationOptionCurveEaseInOut | UIViewAnimationOptionTransitionFlipFromLeft
animations:^{ viewControllers = [super popToViewController:viewController animated:NO]; }
completion:nil];
return viewControllers;
}
@end
记住,在Swift中,扩展绝对是你的朋友!
public extension UINavigationController {
/**
Pop current view controller to previous view controller.
- parameter type: transition animation type.
- parameter duration: transition animation duration.
*/
func pop(transitionType type: String = kCATransitionFade, duration: CFTimeInterval = 0.3) {
self.addTransition(transitionType: type, duration: duration)
self.popViewControllerAnimated(false)
}
/**
Push a new view controller on the view controllers's stack.
- parameter vc: view controller to push.
- parameter type: transition animation type.
- parameter duration: transition animation duration.
*/
func push(viewController vc: UIViewController, transitionType type: String = kCATransitionFade, duration: CFTimeInterval = 0.3) {
self.addTransition(transitionType: type, duration: duration)
self.pushViewController(vc, animated: false)
}
private func addTransition(transitionType type: String = kCATransitionFade, duration: CFTimeInterval = 0.3) {
let transition = CATransition()
transition.duration = duration
transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
transition.type = type
self.view.layer.addAnimation(transition, forKey: nil)
}
}
我不知道有什么方法可以公开更改过渡动画。
如果“后退”按钮不是必需的,你应该使用模态视图控制器来实现“push from bottom”/“flip”/“fade”/(≥3.2)“页面卷曲”过渡。
在私有端,方法-pushViewController:animated:调用未记录的方法-pushViewController:transition:forceImmediate:,因此,例如,如果你想要一个从左到右的翻转转换,你可以使用
[navCtrler pushViewController:ctrler transition:10 forceImmediate:NO];
但是,您不能以这种方式更改“pop”过渡。