8

看看MLB At Bat 应用程序的这段视频。基本上，我只想展示一个modalViewController风格UIModalPresentationFormSheet，让它从另一个视图中生长，然后翻转。就像您在 MLB 应用程序的记分板上点击游戏一样。有谁知道我怎么能做到这一点？

谢谢

编辑：我的主要观点与 MLB 应用程序的设置几乎相同。我正在使用AQGridView并希望在点击网格视图中的单元格时发生动画。

编辑2：我也愿意放弃这个UIViewController概念，只使用一个 plain UIView，然后UIModalPresentationFormSheet手动复制风格，如果这样更容易的话。

编辑 3：好的，忘记使用 aUIViewController来执行此操作，因为我没有得到任何回复，我会假设这是不可能的。我的新问题是如何使用 just 复制已发布视频中的动画UIView？所以基本上，初始视图需要同时增长、移动和翻转。

编辑4：我想我已经弄清楚了实际的动画，现在我唯一的问题是计算要输入的坐标CATransform3DTranslate。我的视图需要像视频中一样进行动画处理。它需要从另一个视图开始并动画到屏幕的中心。这是我尝试计算在中心弹出的视图的坐标的方法：

CGPoint detailInitialPoint = [gridView convertPoint:view.frame.origin toView:detailView.frame.origin];
CGPoint detailFinalPoint = detailView.frame.origin;

gridView是我的主视图的容器视图，其中包含较小的网格项。view是我们从中制作动画的特定网格项目。并且detailView是出现在屏幕中间的视图。

4

5 回答 5

6

您可以使用 UIViewControler 上的类别实现自己的转换。

UIViewController+ShowModalFromView.h

#import <Foundation/Foundation.h>
#import <QuartzCore/QuartzCore.h>

@interface UIViewController (ShowModalFromView)
- (void)presentModalViewController:(UIViewController *)modalViewController fromView:(UIView *)view;
@end

UIViewController+ShowModalFromView.m

#import "UIViewController+ShowModalFromView.h"

@implementation UIViewController (ShowModalFromView)

- (void)presentModalViewController:(UIViewController *)modalViewController fromView:(UIView *)view {
    modalViewController.modalPresentationStyle = UIModalPresentationFormSheet;

// Add the modal viewController but don't animate it. We will handle the animation manually
[self presentModalViewController:modalViewController animated:NO];

// Remove the shadow. It causes weird artifacts while animating the view.
CGColorRef originalShadowColor = modalViewController.view.superview.layer.shadowColor;
modalViewController.view.superview.layer.shadowColor = [[UIColor clearColor] CGColor];

// Save the original size of the viewController's view    
CGRect originalFrame = modalViewController.view.superview.frame;

// Set the frame to the one of the view we want to animate from
modalViewController.view.superview.frame = view.frame;

// Begin animation
[UIView animateWithDuration:1.0f
                 animations:^{
                     // Set the original frame back
                     modalViewController.view.superview.frame = originalFrame;
                 }
                 completion:^(BOOL finished) {
                     // Set the original shadow color back after the animation has finished
                     modalViewController.view.superview.layer.shadowColor = originalShadowColor;
                 }];
}

@end

这可以很容易地更改为使用您想要的任何动画过渡；对于您的，您可能想要使用 CA3DTransform。希望这可以帮助！

于 2012-04-06T03:15:34.653 回答
1

要进行翻转、增长和平移动画，您可以使用以下代码：

- (void)animate {
    int newX, newY; //New position
    int newW, newH; //New size
    [UIView animateWithDuration:someDuration delay:someDelay animations:^{
        yourView.transform = CATransform3DMakeRotation(M_PI_2,1.0,0.0,0.0); //flip halfway
        yourView.frame = CGRectMake(newX/2, newY/2, newW/2, newH/2);
    } completion:^{
        while ([yourView.subviews count] > 0)
            [[yourView.subviews lastObject] removeFromSuperview]; // remove all subviews
        // Add your new views here 
        [UIView animateWithDuration:someDuration delay:someDelay animations:^{
            yourView.transform = CATransform3DMakeRotation(M_PI,1.0,0.0,0.0); //finish the flip
            yourView.frame = CGRectMake(newX, newY, newW, newH);
        } completion:^{
            // Flip completion code here
        }];
    }];
}

希望这可以帮助！

于 2012-04-15T20:28:56.017 回答
1

好的，我想通了。这是我所做的：

CGFloat duration = 0.8;

/*
//Detail View Animations 
*/

CATransform3D initialDetailScale = CATransform3DMakeScale(view.frame.size.width/vc.view.frame.size.width, view.frame.size.height/vc.view.frame.size.height, 1.0);
CATransform3D initialDetailTransform = CATransform3DRotate(initialDetailScale, -M_PI, 0.0, -1.0, 0.0);
CATransform3D finalDetailScale = CATransform3DMakeScale(1.0, 1.0, 1.0);
CATransform3D finalDetailTransform = CATransform3DRotate(finalDetailScale, 0.0, 0.0, -1.0, 0.0);

NSMutableArray *detailAnimations = [NSMutableArray array];

CABasicAnimation *detailTransform = [CABasicAnimation animationWithKeyPath:@"transform"];
detailTransform.fromValue = [NSValue valueWithCATransform3D:initialDetailTransform];
detailTransform.toValue = [NSValue valueWithCATransform3D:finalDetailTransform];
detailTransform.duration = duration;
[detailAnimations addObject:detailTransform];

CABasicAnimation *detailFadeIn = [CABasicAnimation animationWithKeyPath:@"opacity"];
detailFadeIn.fromValue = [NSNumber numberWithFloat:1.0];
detailFadeIn.toValue = [NSNumber numberWithFloat:1.0];
detailFadeIn.duration = duration/2;
detailFadeIn.beginTime = duration/2;
[detailAnimations addObject:detailFadeIn];

CABasicAnimation *detailMove = [CABasicAnimation animationWithKeyPath:@"position"];
detailMove.fromValue = [NSValue valueWithCGPoint:vc.view.layer.position];
detailMove.toValue = [NSValue valueWithCGPoint:self.view.layer.position];
detailMove.duration = duration;
[detailAnimations addObject:detailMove];

CAAnimationGroup *detailGroup = [CAAnimationGroup animation];
[detailGroup setAnimations:detailAnimations];
[detailGroup setDuration:duration];
detailGroup.removedOnCompletion = NO;
detailGroup.fillMode = kCAFillModeForwards;
detailGroup.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[vc.view.layer addAnimation:detailGroup forKey:@"anim"];

/*
//Grid Item View Animations
*/

CATransform3D initialGridScale = CATransform3DMakeScale(1.0, 1.0, 1.0);
CATransform3D initialGridTransform = CATransform3DRotate(initialGridScale, 0.0, 0.0, 1.0, 0.0);
CATransform3D finalGridScale = CATransform3DMakeScale(vc.view.frame.size.width/view.frame.size.width, vc.view.frame.size.height/view.frame.size.height, 1.0);
CATransform3D finalGridTransform = CATransform3DRotate(finalGridScale, M_PI, 0.0, 1.0, 0.0);

NSMutableArray *gridAnimations = [NSMutableArray array];

CABasicAnimation *gridTransform = [CABasicAnimation animationWithKeyPath:@"transform"];
gridTransform.fromValue = [NSValue valueWithCATransform3D:initialGridTransform];
gridTransform.toValue = [NSValue valueWithCATransform3D:finalGridTransform];
gridTransform.duration = duration;
[gridAnimations addObject:gridTransform];

CABasicAnimation *gridFadeOut = [CABasicAnimation animationWithKeyPath:@"opacity"];
gridFadeOut.fromValue = [NSNumber numberWithFloat:0.0];
gridFadeOut.toValue = [NSNumber numberWithFloat:0.0];
gridFadeOut.duration = duration/2;
gridFadeOut.beginTime = duration/2;
[gridAnimations addObject:gridFadeOut];

CABasicAnimation *gridMove = [CABasicAnimation animationWithKeyPath:@"position"];
gridMove.fromValue = [NSValue valueWithCGPoint:view.layer.position];
gridMove.toValue = [NSValue valueWithCGPoint:[self.view.layer convertPoint:self.view.layer.position toLayer:gridView.layer]];
gridMove.duration = duration;
[gridAnimations addObject:gridMove];

CAAnimationGroup *gridGroup = [CAAnimationGroup animation];
[gridGroup setAnimations:gridAnimations];
gridGroup.duration = duration;
gridGroup.fillMode = kCAFillModeForwards;
gridGroup.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
gridGroup.removedOnCompletion = NO;
[view.layer addAnimation:gridGroup forKey:@"anim"];

我正在使用AQGridView. 在我的代码示例中是我正在制作动画view的实例。AQGridViewCell并且vc.view是我正在展示的细节UIViewController/ UIView。

于 2012-04-16T20:51:29.173 回答
0

我强烈建议您看看这篇文章。

您不需要自己实际处理所有这些动画。

如果您使用UIView类方法transitionFromView:toView:duration:options:completion:并传入UIViewAnimationOptionTransitionFlipFromLeft或UIViewAnimationOptionTransitionFlipFromRight-- 无论您希望动画以哪种方式翻转。

我已经使用这种方法实现了与 MLB 应用程序中显示的相同的东西。您from view将是网格中的单元格，而to view将是单元格“背面”的内容。

希望这将减少您需要的整体代码。

于 2012-07-02T17:53:47.167 回答
0

我会使用带有自定义 UICollectionViewCell 的 UICollectionView 并使用其委托调用进行动画处理......只是其他人可以选择的示例。

#pragma mark - UICollectionViewDelegate
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:  
(NSIndexPath *)indexPath
{


[UIView beginAnimations:@"showImage" context:Nil];
    CGRect cellFrame = cell.frame;
    CGRect imgFram = cell.imageView.frame;
    [UIView setAnimationDuration:0.8];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:cell   
cache:YES];
    cellFrame.size = CGSizeMake(200, 200);
    cellFrame.origin.y = 10;
    cellFrame.origin.x = 45;
    cell.frame = cellFrame;
    imgFram.size = CGSizeMake(200, 200);
    cell.imageView.frame = imgFram;
    [collectionView bringSubviewToFront:cell];
    [UIView commitAnimations];
}
于 2013-04-16T19:58:02.820 回答