如何防止CALayer隐式动画？

Question

当我设置实例的backgroundColor属性时CALayer,更改似乎有点动画.但在我的情况下,我不希望这样.如何设置backgroundColor无动画？

Answer 1

您可以CATransaction使用禁用的动画将更改包装为:

[CATransaction begin];
[CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];
//change background colour
[CATransaction commit];

Answer 2

[CATransaction begin];
[CATransaction setDisableActions:YES];
//your code here        
[CATransaction commit];

Answer 3

尝试给你的图层delegate,然后有delegate实现:

- (id<CAAction>)actionForLayer:(CALayer *)layer forKey:(NSString *)key {
    return [NSNull null];
}

Answer 4

迅速

这里还有其他一些Swift答案,但我认为这是最基本的答案:

CATransaction.begin()
CATransaction.setDisableActions(true)

// change the layer's background color

CATransaction.commit()