如何禁用 CALayer 隐式动画? [英] How to disable CALayer implicit animations?

问题描述

快把我逼疯了！我正在开发绘图应用程序.假设我正在处理一个名为 sheet 的 UIView.

It's driving me crazy! I am working on a drawing application. Let's say I am working on a UIView called sheet.

我正在向该视图添加一些子图层([sheet.layer addSublayer:...])，然后我想绘制到它们中.为此，我创建了一个 CGImageRef 并将其放入图层的 contents.但它是动画的，我不想要那样.

I am adding some sublayers to this view ([sheet.layer addSublayer:...]) and then I want to draw into them. To do so I am creating a CGImageRef and putting it into the layer's contents. But it's animated and I don't want that.

我什么都试过了:

• removeAnimationForKey:
• removeAllAnimations
• 设置动作字典
• 使用动作层delegate
• [CATransaction setDisableAnimations:YES]

似乎是对的.我不明白为什么这个图层仍然是动画的;_;
难道我做错了什么?有什么秘诀吗?

It's seems correct. I don't understand why this layer is still animated ;_;
Am I doing something wrong? Is there a secret way?

推荐答案

Swift

CATransaction.begin()
CATransaction.setDisableActions(true)

// change layer properties that you don't want to animate

CATransaction.commit()

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