自定义Segue动画 [英] Custom Segue Animation
本文介绍了自定义Segue动画的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试使用自定义序列来执行一种缩放动画. 执行过渡时，sourceViewController变黑，然后发生缩放.
还尝试将pushViewController:设置为完成块，但根本不执行转换.
- (void)perform {
UIViewController *sourceViewController = (UIViewController *) self.sourceViewController;
UIViewController *destinationViewController = (UIViewController *) self.destinationViewController;
[destinationViewController.view setTransform:CGAffineTransformMakeScale(0.5,0.5)];
[destinationViewController.view setAlpha:0.0];
[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationCurveEaseOut
animations:^{
[destinationViewController.view setTransform:CGAffineTransformMakeScale(1.0,1.0)];
[destinationViewController.view setAlpha:1.0];
[sourceViewController.navigationController pushViewController:destinationViewController animated:NO];
}
completion:^(BOOL finished){
}];
}
我做错了什么?
解决方案
感觉很笨拙，但是您可以尝试在动画之前将destinationViewController.view作为子视图添加，然后在完成动画后将其删除并推回上没有动画.在过渡之前解决黑屏，但可能并不完美，具体取决于您要对导航栏执行的操作，但可能更接近:
[sourceViewController.view addSubview:destinationViewController.view];
[destinationViewController.view setFrame:sourceViewController.view.window.frame];
[destinationViewController.view setTransform:CGAffineTransformMakeScale(0.5,0.5)];
[destinationViewController.view setAlpha:1.0];
[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationCurveEaseOut
animations:^{
[destinationViewController.view setTransform:CGAffineTransformMakeScale(1.0,1.0)];
[destinationViewController.view setAlpha:1.0];
}
completion:^(BOOL finished){
[destinationViewController.view removeFromSuperview];
[sourceViewController.navigationController pushViewController:destinationViewController animated:NO];
}];
注意，在有效的iOS 7中，您将使用自定义过渡.有关更多信息，请参阅WWDC 2013 使用视图控制器的自定义转换. /p>
例如，如果尝试使用导航控制器进行自定义过渡，则第一个视图控制器会将其自身指定为导航控制器的委托:
self.navigationController.delegate = self;
然后，它将分别为push和pop指定自定义动画器:
- (id<UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController
animationControllerForOperation:(UINavigationControllerOperation)operation
fromViewController:(UIViewController *)fromVC
toViewController:(UIViewController *)toVC
{
if (operation == UINavigationControllerOperationPush) {
return [[PushAnimator alloc] init];
} else {
return [[PopAnimator alloc] init];
}
}
然后您显然会实现这些动画师:
@interface PushAnimator : NSObject <UIViewControllerAnimatedTransitioning>
@end
@implementation PushAnimator
- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
return 0.5;
}
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
[[transitionContext containerView] addSubview:toViewController.view];
toViewController.view.frame = fromViewController.view.frame;
toViewController.view.transform = CGAffineTransformMakeScale(0.5,0.5);
toViewController.view.alpha = 0.0;
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0.0 options:0 animations:^{
toViewController.view.transform = CGAffineTransformIdentity;
toViewController.view.alpha = 1.0;
} completion:^(BOOL finished) {
[fromViewController.view removeFromSuperview];
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
}
@end
和
@interface PopAnimator : NSObject <UIViewControllerAnimatedTransitioning>
@end
@implementation PopAnimator
- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
return 0.5;
}
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
[[transitionContext containerView] insertSubview:toViewController.view belowSubview:fromViewController.view];
toViewController.view.frame = fromViewController.view.frame;
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0.0 options:0 animations:^{
fromViewController.view.transform = CGAffineTransformMakeScale(0.5,0.5);
fromViewController.view.alpha = 0.0;
} completion:^(BOOL finished) {
[fromViewController.view removeFromSuperview];
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
}
@end
I am trying to use a custom segue to perform a kind of zoom animation. When the transition is executed, the sourceViewController goes black, then the zoom occurs.
Tried also to set the pushViewController: into the completion block but the transition is not executed at all.
- (void)perform {
UIViewController *sourceViewController = (UIViewController *) self.sourceViewController;
UIViewController *destinationViewController = (UIViewController *) self.destinationViewController;
[destinationViewController.view setTransform:CGAffineTransformMakeScale(0.5,0.5)];
[destinationViewController.view setAlpha:0.0];
[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationCurveEaseOut
animations:^{
[destinationViewController.view setTransform:CGAffineTransformMakeScale(1.0,1.0)];
[destinationViewController.view setAlpha:1.0];
[sourceViewController.navigationController pushViewController:destinationViewController animated:NO];
}
completion:^(BOOL finished){
}];
}
What I am doing wrong ?
解决方案
It feels kludgy, but you can try adding the destinationViewController.view as a subview before your animation and then when the animation is done, remove it and push it back on without animation. Solves the black screen before the transition, but perhaps not perfect, depending upon what you want to do with the navigation bar, but maybe closer:
[sourceViewController.view addSubview:destinationViewController.view];
[destinationViewController.view setFrame:sourceViewController.view.window.frame];
[destinationViewController.view setTransform:CGAffineTransformMakeScale(0.5,0.5)];
[destinationViewController.view setAlpha:1.0];
[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationCurveEaseOut
animations:^{
[destinationViewController.view setTransform:CGAffineTransformMakeScale(1.0,1.0)];
[destinationViewController.view setAlpha:1.0];
}
completion:^(BOOL finished){
[destinationViewController.view removeFromSuperview];
[sourceViewController.navigationController pushViewController:destinationViewController animated:NO];
}];
Note, effective iOS 7, you would use custom transitions. For more information, see WWDC 2013 Custom Transitions Using View Controllers.
For example, if trying to do a custom transition with navigation controller, the first view controller would specify itself as the delegate of the navigation controller:
self.navigationController.delegate = self;
Then, it would specify the custom animators for push and pop, respectively:
- (id<UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController
animationControllerForOperation:(UINavigationControllerOperation)operation
fromViewController:(UIViewController *)fromVC
toViewController:(UIViewController *)toVC
{
if (operation == UINavigationControllerOperationPush) {
return [[PushAnimator alloc] init];
} else {
return [[PopAnimator alloc] init];
}
}
And then you'd obviously implement these animators:
@interface PushAnimator : NSObject <UIViewControllerAnimatedTransitioning>
@end
@implementation PushAnimator
- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
return 0.5;
}
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
[[transitionContext containerView] addSubview:toViewController.view];
toViewController.view.frame = fromViewController.view.frame;
toViewController.view.transform = CGAffineTransformMakeScale(0.5,0.5);
toViewController.view.alpha = 0.0;
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0.0 options:0 animations:^{
toViewController.view.transform = CGAffineTransformIdentity;
toViewController.view.alpha = 1.0;
} completion:^(BOOL finished) {
[fromViewController.view removeFromSuperview];
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
}
@end
and
@interface PopAnimator : NSObject <UIViewControllerAnimatedTransitioning>
@end
@implementation PopAnimator
- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
return 0.5;
}
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
[[transitionContext containerView] insertSubview:toViewController.view belowSubview:fromViewController.view];
toViewController.view.frame = fromViewController.view.frame;
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0.0 options:0 animations:^{
fromViewController.view.transform = CGAffineTransformMakeScale(0.5,0.5);
fromViewController.view.alpha = 0.0;
} completion:^(BOOL finished) {
[fromViewController.view removeFromSuperview];
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
}
@end
这篇关于自定义Segue动画的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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