Cocoa：NSView动画 [英] Cocoa: NSView Animation

问题描述

这是一样简单，因此我不能为我的生活找到什么问题，我通过文档作为指南，但它仍然没有工作。我有一个更大的观点内的视图。 IBAction应该淡出内部视图...就是这样。这是我有：

This is as simple as can be so I can't for the life of me find what's wrong, I looked through the documentation as a guide but it still didn't work. I have a view inside a larger view. An IBAction is supposed to fade out the inner view... that's it. Here's what I've got:

NSViewAnimation *theAnim;
NSMutableDictionary *viewDict;

// Create the attributes dictionary for the view.
viewDict = [NSMutableDictionary dictionaryWithCapacity:2];

// Set the target object to be the view.
[viewDict setObject:_innerView forKey:NSViewAnimationTargetKey];

// Set this view to fade out
[viewDict setObject:NSViewAnimationFadeOutEffect forKey:NSViewAnimationEffectKey];

theAnim = [[NSViewAnimation alloc] initWithViewAnimations:@[viewDict]];

// Set some additional attributes for the animation.
[theAnim setDuration:1.0];

// Run the animation.
[theAnim startAnimation];

我用NSLogs检查了viewDict和theAnim，我几乎从一个旧的程序复制这个工作，这是工作，现在找不到什么错。

I checked the viewDict and theAnim with NSLogs and neither are nil. I pretty much copied this from an old program I had where this was working, can't find what's wrong now.

我在xcode 5.1.1，感谢

I'm on xcode 5.1.1, thanks for the help.

推荐答案

现代方法更容易：

[NSAnimationContext runAnimationGroup:^(NSAnimationContext *context) {
    context.duration = 1;
    view.animator.alphaValue = 0;
}
completionHandler:^{
    view.hidden = YES;
    view.alphaValue = 1;
}];

如果视图层次是基于layer的，它实际上就足够了：

If the view hierarchy is layer-backed, it's actually sufficient to do:

view.animator.hidden = YES;

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