我是 Mac 开发的新手，我们有没有像 imagev = [NSArray arrayWithObjects
我需要一些像我们在 iOS 中做的事情想在 mac 中做的事情，
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，我如何制作动画
问候
我发现有人使用Core Animation 方法来解决这个问题，这对我来说已经足够接近了。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;
}
然后你可以像这样动画它：
- (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];
}
以Ben Flynn的出色回答为基础。
在斯威夫特 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)
如果预计视图会调整大小：
删除这些行：
let layerRect = CGRect(origin: CGPoint.zero, size: self.frame.size)
layer.frame = layerRect
layer.bounds = layerRect
并self.needsLayout = true在添加子层后调用。这将导致layout()被调用。
//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，覆盖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.
}
可可没有类似的东西animatedImageWithImages:duration:。Cocoa 中的图像可以在空间（不同的分辨率）和颜色深度上有所不同，但时间不一样；单个图像始终是静态图像，从不动画。
（动画 GIF可能有一个例外，但 GIF 每帧不能显示超过 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 机制创建或显示 GIF。 )
您需要做的不是创建图像，而是创建电影。将图像添加到电影中，改变每个图像的持续时间以达到您想要的播放速度。然后，在电影视图中显示您的电影，可选择隐藏控制器。
斯威夫特 4.2
在添加beginTime. 因为Swift 3一些常数也发生了变化。所以我已将解决方案转换为Swift 4.2. 另外，我认为将其创建为CALayer扩展会很方便：
extension CALayer {
static func image(sequence: [NSImage], duration: CFTimeInterval? = nil, frame: CGRect? = nil) -> CALayer {
let layer = CALayer()
if let f = frame { layer.frame = f }
layer.autoresizingMask = [.layerWidthSizable, .layerHeightSizable]
let keyPath = "contents"
let keyFrameAnimation = CAKeyframeAnimation(keyPath: keyPath)
keyFrameAnimation.values = sequence
keyFrameAnimation.calculationMode = .discrete
keyFrameAnimation.fillMode = .forwards
keyFrameAnimation.duration = duration ?? CFTimeInterval(sequence.count / 18)
keyFrameAnimation.repeatCount = Float.infinity
keyFrameAnimation.autoreverses = false
keyFrameAnimation.isRemovedOnCompletion = false
keyFrameAnimation.beginTime = 0.0
layer.add(keyFrameAnimation, forKey: keyPath)
return layer
}
}
像这样使用它
let sequenceLayer = CALayer.image(sequence: imageSequence, duration: 0.55, frame: yourView.bounds)
@interface AnimatedNSImage : NSImage
@property (nonatomic, retain) IBInspectable NSImageView *delegate;
@property (nonatomic, readonly) NSArray *frames;
@property (nonatomic, readonly) CGFloat duration;
- (instancetype) initWithImages:(NSArray*)frames duration:(CGFloat)duration;
@end
在 .m 文件中...
@interface AnimatedNSImage () {
NSTimer *_scheduledTimer;
NSArray *_frames;
NSUInteger _frameIndex;
CGFloat _duration;
}
@end
@implementation AnimatedNSImage
@synthesize delegate;
- (NSArray *) frames
{
return _frames;
}
- (CGImageRef) CGImage
{
if (_frames && _frames.count >0) {
NSImage *_frame = _frames[_frameIndex];
return _frame.CGImage;
}
return nil;
}
- (NSArray<NSImageRep *> *) representations
{
NSImage *_frame = _frames[_frameIndex];
return _frame.representations;
}
- (CGFloat) duration
{
return _duration;
}
- (void) __showNextFrame:(id)sender
{
_frameIndex = (_frameIndex + 1) % _frames.count;
if (delegate) {
[delegate setNeedsDisplay:YES];
}
}
- (NSSize) size
{
if (_frames && _frames.count >0) {
NSImage *_frame = _frames[_frameIndex];
return _frame.size;
}
return CGSizeZero;
}
- (void) setup
{
_scheduledTimer = [NSTimer scheduledTimerWithTimeInterval:_duration target:self selector:@selector(__showNextFrame:) userInfo:nil repeats:YES];
}
- (void) dealloc
{
[_scheduledTimer invalidate];
_scheduledTimer = nil;
}
- (instancetype) initWithImages:(NSArray *)frames duration:(CGFloat)duration
{
self = [super init];
if (self) {
_frames = frames;
_duration = duration / 100.0f;
[self setup];
}
return self;
}
@end
请注意，您必须分配委托（给 NSImageView）才能调用刷新。
一个例子....
IBOutlet NSImageView *_testGifView;
AnimatedNSImage *_animatedImage = [NSImage animatedImageWithAnimatedGIFURL:[NSURL URLWithString:@"https://media.giphy.com/media/B2zB8mHrHHUXS57Cuz/giphy.gif"]];
_testGifView.image = _animatedImage;
_animatedImage.delegate = _testGifView;
当然可以根据需要调整计划的计时器，因为输入时间以厘秒（而不是分钟）为单位。