ios - 从 UIView 动画中获取 UIImage

Question

我有一些简单的动画代码:

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:duration];
[UIView setAnimationCurve:curve];
[UIView setAnimationBeginsFromCurrentState:YES];

// The transform matrix
CGAffineTransform transform = CGAffineTransformMakeTranslation(x, y);
image.transform = transform;

// Commit the changes
[UIView commitAnimations];

是否可以将动画的每一帧获取为 uiimages？

Answer 1

您无法将每个帧作为 UIImages 获取(除非您在动画 View 的帧上以非常快的速度使用 UIGraphicsGetCurrentContext ，而且我什至不确定这是否有效)，但是使用核心动画，您可以访问 CALayer 的 presentationLayer 属性，该属性(来自 CALayer Class Reference ):

Returns a copy of the layer containing all properties as they were at the start of the current transaction, with any active animations applied.

希望这对您有所帮助!