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3我有一个被触摸操纵的图像.

让我们说它是一个指向箭头的图像.在它旋转180度后,箭头现在指向下方,我想重置CGAffineTransform属性,以便它现在认为它转回0度.

我想要这个,因为我必须翻译,旋转,缩放等,无论图像的角度是0还是180.

提前致谢.

EDITED Ater 5回复:

嗯,我不确定这些答案是否符合我的要求.我为不清楚而道歉.

1. 触摸箭头指向上方的图像并向右移动 - 一切都很好.
2. 用旋转手势旋转图像并转动180度 - 一切都很好
3. 图像现在被触摸并向右移动 - 由于坐标是颠倒的,现在图像上下跳跃使我的其他动画序列变得棘手.

为了防止上述问题和其他问题,我希望在旋转180后重置所有内容.例如,一旦图像变为180度,CGAffineTransform属性就知道它已经转为180%.我想在那个时候重置这些属性,所以CGAffineTransform认为它变为0度而不是180度,尽管图像是视觉上倒置的.我希望这种情况在没有任何视觉变化的情况下发生,一旦旋转到180度.

希望这更清楚......

我想做什么:

由父视图控制器管理的父视图不应该旋转.

由子视图控制器管理的子视图应该旋转到所有方向.

我试过的:

ParentViewController

override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
    return .Portrait
}

override func shouldAutorotate() -> Bool {
    return true
}

fun addChildViewController() {
    let storyBoard = UIStoryboard(name: "Main", bundle: nil)
    self.childViewController = storyBoard("Child View Controller") as? ChildViewController
    self .addChildViewController(self.childViewController!)
    self.childViewController! .didMoveToParentViewController(self)
    self.view .addSubview(self.childViewController!.view)
    self.childViewController!.view.frame = CGRectMake (40, 200, 400, 250)
}

ChildViewController

override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
    return  .All
}

override func shouldAutorotate() -> Bool {
    return true
}

Xcode部署信息中支持的方向设置为全部四个.

我得到了什么:

没有View的旋转.如果我将父级的旋转设置为all,则所有视图一起旋转.所以它是全有或全无. …

Simliar到iOS Photos App,用户通过捏合放大和缩小图像:

UIView> UIScrollView> UIImageView> UIImage

最初,我遇到了缩放比例1以下的问题:图像偏离中心.我通过这样做得到了解决方法:

func scrollViewDidZoom(scrollView: UIScrollView) {
        let offsetX = max((scrollView.bounds.width - scrollView.contentSize.width) * 0.5, 0)
        let offsetY = max((scrollView.bounds.height - scrollView.contentSize.height) * 0.5, 0)
        scrollView.contentInset = UIEdgeInsetsMake(offsetY, offsetX, 0, 0)
}

这在缩小时效果很好.

UIImage内容模式是aspectFit

问题

当我ZOOM IN时,当zoomScale大于1时,滚动视图插图需要拥抱滚动视图包含的UIImage的周围环境.这消除了UIImage周围的死空间.IE,照片应用程序通过捏或双击放大.

试着

    func scrollViewDidZoom(scrollView: UIScrollView) {
    if scrollView.zoomScale > 1 {
        let imageScale = (self.imageView.bounds.width/self.imageView.image!.size.width)
        let imageWidth = self.imageView.image!.size.width * imageScale
        let imageHeight = self.imageView.image!.size.height * imageScale
        scrollView.contentInset = UIEdgeInsetsMake(((scrollView.frame.height - imageHeight) * 0.5), (scrollView.frame.width - imageWidth) …

问题:

在调用状态栏消失后,模态呈现的视图控制器不会向上移动,在顶部留下20px空/透明空间.

正常:没有问题

在电话:没有问题

在呼叫消失后:

在顶部留下20px高的空/透明空间,露出下面的橙色视图.但是,状态栏仍然存在于透明区域上方.导航栏还为状态栏留出空间,它的位置只有20px太低.

• 基于iOS 10
• 模态呈现的视图控制器
• 自定义模态演示
• 后面的主视图控制器是橙色
• 不使用Autolayout
• 当旋转到横向时,20px In-Call Bar离开并仍然留下20px的间隙.
• 我选择退出在横向方向显示状态栏.(即大多数股票应用程序)

我试着听App代表:

willChangeStatusBarFrame
didChangeStatusBarFrame

还可以查看基于控制器的通知:

UIApplicationWillChangeStatusBarFrame
UIApplicationDidChangeStatusBarFrame

当我为所有上述四种方法记录呈现视图的帧时,帧始终位于(y:0)原点.

更新

查看控制器自定义模式演示

    let storyboard = UIStoryboard(name: "StoryBoard1", bundle: nil)
    self.modalVC = storyboard.instantiateViewController(withIdentifier: "My Modal View Controller") as? MyModalViewController
    self.modalVC!.transitioningDelegate = self
    self.modalVC.modalPresentationStyle = .custom
    self.modalVC.modalPresentationCapturesStatusBarAppearance = true;
    self.present(self.modalVC!, animated: true, completion: nil)


    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        let containerView = transitionContext.containerView
        let fromViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from)
        let toViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to)
        toViewController!.view.transform = CGAffineTransform(scaleX: 0.001, …

我想做什么:

在Apple的Photo's App上,如果在滚动到任意偏移的同时旋转设备,预先在中心的相同单元将在旋转后终止于中心.

我试图用UICollectionView实现相同的行为.' indexPathsForVisibleItems '似乎是这样做的方式....

到目前为止我得到了什么:

以下代码提供了旋转之间的平滑操作,但中心项计算似乎是关闭的:

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
    super.viewWillTransition(to: size, with: coordinator)

    self.collectionView?.collectionViewLayout.invalidateLayout()

    let middleItem = (self.collectionView?.indexPathsForVisibleItems.count / 2) - 1
    let indexPath = self.collectionView?.indexPathsForVisibleItems[middleItem]

    coordinator.animate(alongsideTransition: { ctx in

        self.collectionView?.layoutIfNeeded()
        self.collectionView?.scrollToItem(at: indexPath!, at: .centeredVertically, animated: false)

    }, completion: { _ in


    })
}

什么不适用于上述代码:

1. 肖像 - >风景:从细胞最终应该在中心处稍微偏离.
2. 肖像 - >风景 - >肖像:完全偏离肖像中的偏移量.
3. 人像 - >风景 - >人像 - >风景:离开!

笔记:

• 由于必须重新计算单元格大小和间距,我必须在旋转时使集合视图布局无效.
• self.collectionView？.layoutIfNeeded()位于动画
  块内,使转换顺利进行
• 可能是在集合视图布局未完成之前调用scrollToItem,导致不正确的滚动偏移？

替代方法？ …

是)我有的

我正在使用UIViewControllerAnimatedTransitioning protocol附加UIViewPropertyAnimator平移来关闭视图控制器

extension SecondViewController : UIViewControllerAnimatedTransitioning {
    func interruptibleAnimator(using ctx: UIViewControllerContextTransitioning) -> UIViewImplicitlyAnimating {

        if self.animator != nil {
            return self.animator!
        }

        let containerView = ctx.containerView
        let toVC = ctx.viewController(forKey: .to) as! FirstViewController
        let fromVC = ctx.viewController(forKey: .from) as! SecondViewController

        containerView.insertSubview(toVC.view, belowSubview: fromVC.view)

        self.animator = UIViewPropertyAnimator(duration: transitionDuration(using: ctx),
                                          curve: .easeOut, animations: {

            self.fromVC.view.transform = CGAffineTransform(scale: 0.5)

        })

        self.animator.isInterruptible = true
        self.animator.isUserInteractionEnabled = true
        self.animator.isManualHitTestingEnabled = true

        self.animator.addCompletion { position in
            switch position {
            case .end: …

我有以下在iOS 11上正常工作:

let ciContext       = CIContext(options: [kCIContextWorkingFormat : kCIFormatRGBAh])  
var outputImage     : CIImage  
let mainImage       = CIImage(data: jpegData)  
let disparityImage  = CIImage(data: jpegData, options: [kCIImageAuxiliaryDisparity : true])  
let filter          = CIFilter(name: "CIDepthBlurEffect",  
                      withInputParameters: [kCIInputImageKey : mainImage!,  
                      kCIInputDisparityImageKey: disparityImage!])  
outputImage         = filter!.outputImage!

问题

在iOS 12之前,Rendtition很好,一切都模糊了.这是迄今为止的每个测试版.整个图像模糊不清.

我找不到任何API更改说明,也CIDepthBlurEffect没有记录开始.

控制台中的Xcode/iOS 8/AVFoundation相关错误:

error in __connection_block_invoke_2: Connection interrupted

我只是将AVCaptureVideoDataOutput添加到Apple的示例应用程序'AVCamManualUsingtheManualCaptureAPI'

我添加的是:

    // CoreImage wants BGRA pixel format
    NSDictionary *outputSettings = @{ (id)kCVPixelBufferPixelFormatTypeKey : [NSNumber numberWithInteger:kCVPixelFormatType_32BGRA]};

    // create and configure video data output
    AVCaptureVideoDataOutput *videoDataOutput = [[AVCaptureVideoDataOutput alloc] init];
    videoDataOutput.videoSettings = outputSettings;
    videoDataOutput.alwaysDiscardsLateVideoFrames = YES;
    [videoDataOutput setSampleBufferDelegate:self queue:sessionQueue];

上面插入到示例项目的代码段:

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

    self.recordButton.layer.cornerRadius = self.stillButton.layer.cornerRadius = self.cameraButton.layer.cornerRadius = 4;
    self.recordButton.clipsToBounds = self.stillButton.clipsToBounds = self.cameraButton.clipsToBounds = YES;

    // Create the AVCaptureSession
    AVCaptureSession *session = [[AVCaptureSession alloc] init]; …

新款MacBook Pro带触摸条,在macOS Sierra中,系统控制条的图标,它们位于何处？

我看了下HD/System/Library/CoreServices,不是.....

在GM Xcode(和iOS 11)之前运行良好.现在我收到这些错误:

Apple Mach-O Linker (ld) Error Group
  "__T0So20AVCapturePhotoOutputC12AVFoundation01_abC16SwiftNativeTypesACWP", referenced from:
xxxxxxxxxx

"__T012AVFoundation37_AVCapturePhotoOutputSwiftNativeTypesPAAE012availableRawc11PixelFormatG0SaySo8NSNumberCGfg", referenced from:
xxxxxxxxx

"  "__T0So22AVCapturePhotoSettingsC12AVFoundation01_abC16SwiftNativeTypesACWP", referenced from:
xxxxxxxxxx

ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

它指向的一些行是:

photoSettings = AVCapturePhotoSettings(rawPixelFormatType: OSType(self.photoOutput.availableRawPhotoPixelFormatTypes.first!))
photoSettings.previewPhotoFormat = [kCVPixelBufferPixelFormatTypeKey as String: photoSettings.availablePreviewPhotoPixelFormatTypes.first!.uint32Value,
                                                kCVPixelBufferWidthKey as String: 3024, kCVPixelBufferHeightKey as String: 3024]

也:

let rawFormat = self.photoOutput.availableRawPhotoPixelFormatTypes.first!.uint32Value
photoSettings = AVCapturePhotoSettings(rawPixelFormatType: OSType(rawFormat),
                            processedFormat: [AVVideoCodecKey : AVVideoCodecJPEG,
                                              AVVideoCompressionPropertiesKey : [AVVideoQualityKey : 1.0]] …