NSImageView动画

Question

我是Mac开发的新手，我们有像imagev = [NSArray arrayWithObjects ]这样的方法吗？

我需要一些东西，就像我们在iOS里做的一样，

imageVie.animationImages = [NSArray arrayWithObjects:
 [UIImage imageNamed:@"1.png"],[UIImage imageNamed:@"2.png"],
 [UIImage imageNamed:@"3.png"],[UIImage imageNamed:@"4.png"],
 [UIImage imageNamed:@"5.png"],[UIImage imageNamed:@"6.png"],
 [UIImage imageNamed:@"7.png"] ,nil];

在iPhone中，我如何动画

问候

Answer 1

我发现有人在用处理这个问题的核心动画方法，这对我来说已经足够近了。我稍微修改了一下。你需要@import QuartzCore;

- (void)awakeFromNib
{
    CALayer *layer = [CALayer layer];
    NSMutableArray *spinnerImages = [NSMutableArray arrayWithCapacity:30u];
    for (NSUInteger i = 0; i < 30; ++i)
    {
        NSString *imageName = [NSString stringWithFormat:@"spinner%@", @(i)];
        [spinnerImages addObject:[NSImage imageNamed:imageName]];
    }
    self.spinnerImages = spinnerImages;
    layer.frame = self.imageView.bounds;
    [self.imageView setLayer:layer]; // This view is just a container for the layer. Its frame can be managed by a xib.
    self.imageView.wantsLayer = YES;

    self.spinnerLayer = layer;
}

然后你可以像这样把它动画化：

- (void)stopAnimating
{
    if ([self.layer.animationKeys containsObject:kAnimationKey])
    {
        [self.layer removeAnimationForKey:kAnimationKey];
    }
}

- (void)startAnimating
{
    if ([self.layer.animationKeys containsObject:kAnimationKey])
    {
        return;
    }
    CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:kAnimationKey];
    [animation setCalculationMode:kCAAnimationDiscrete];
    [animation setDuration:1.0f];
    [animation setRepeatCount:HUGE_VALF];
    [animation setValues:self.spinnerImages];
    [self.spinnerLayer addAnimation:animation forKey:kAnimationKey];
}

Answer 2

以Ben Flynn的伟大答案为基础。

在Swift 3中：

// This needs to happen around init.
// NSView (and who inherit from it) does not come with a layer.
// self.layer will be nil at init.
self.layer = CALayer()
self.wantsLayer = true

let layer = CALayer()
let keyPath = "contents" // (I did not find a constant for that key.)
let frameAnimation = CAKeyframeAnimation(keyPath: keyPath)
frameAnimation.calculationMode = kCAAnimationDiscrete

// Duration
// This is the duration of one cycle
let durationOfAnimation: CFTimeInterval = 2.5
frameAnimation.duration = durationOfAnimation
frameAnimation.repeatCount = HUGE// can also use Float.infinity

let imageSeq: [NSImage] = imageSequance // Your images to animate
frameAnimation.values = imageSeq

// Sadly, there are no layout constraints on CALayer.
// If your view will be resized while animating, you'll need to override
// 'func layout()' and calculate aspect ratio if needs be
let layerRect = CGRect(origin: CGPoint.zero, size: self.frame.size)
layer.frame = layerRect
layer.bounds = layerRect
layer.add(frameAnimation, forKey: keyPath)

self.layer?.addSublayer(layer)

如果需要调整视图的大小：

移除以下线条：

let layerRect = CGRect(origin: CGPoint.zero, size: self.frame.size)
layer.frame = layerRect
layer.bounds = layerRect

并在添加子层后调用self.needsLayout = true。这将导致调用layout()。

//let layerRect = CGRect(origin: CGPoint.zero, size: self.frame.size)
//layer.frame = layerRect
//layer.bounds = layerRect
layer.add(frameAnimation, forKey: keyPath)

self.layer?.addSublayer(layer)
self.needsLayout = true

最后，重写layout()

override func layout() {
    super.layout()

    var layerFrame = CGRect(origin: CGPoint.zero, size: self.frame.size)
    self.myLayer.frame = layerFrame
    self.myLayer.bounds = // Adjust ratio as needed.
}

Answer 3

可可没有像animatedImageWithImages:duration:这样的东西。Cocoa中的图像可以在空间(不同的分辨率)和颜色深度上有所变化，但不是时间；单个图像总是静态图像，而不是动画。

(动画GIF可能有例外，但GIF不能显示每帧255或256种颜色，并且不支持部分透明。此外，我还没有尝试使用NSImage或CGImage机器创建或显示GIF。)

你需要做的不是创建一个图像，而是一部电影。然后，添加图片到电影，改变每一个的持续时间，以达到你想要的播放速度。在电影观中显示您的电影，可以选择使用隐藏控制器。