更改Calayer属性的动画时间

这多少有点简单。你有一个IVAR CALayer *yourLayer . 然后设置委托并实现委托方法 -(id<CAAction>)actionForLayer:forKey:

- (void)awakeFromNib {
    yourLayer.delegate = self;
    yourLayer.name = @"yourLayer";
}  
- (id <CAAction>)actionForLayer:(CALayer *)layer forKey:(NSString *)event {
    if([layer.name isEqualToString yourLayer.name]) { // Check for right layer

        CABasicAnimation *ani = [CABasicAnimation animationWithKeyPath:event]; // Default Animation for 'event'
        ani.duration = .5; // Your custom animation duration
        return ani;

    } else return nil; // Default Animation
}

你可以打电话给:

[CATransaction setAnimationDuration:durationSecs] 

在-layoutPublishers或任何其他修改层并希望它们隐式动画的地方。这将影响当前的隐式事务和此事务中的任何子事务。

另一种方法是:

[CATransaction begin];
[CATransaction setValue:[NSNumber numberWithFloat:2.5f] forKey:kCATransactionAnimationDuration];
//Perform CALayer actions, such as changing the layer contents, position, whatever.
aCALayerObject.contents = [self newCALayerContents];    
[CATransaction commit];

这段代码将在2.5秒内使加莱尔的内容发生变化。您还可以使用它完全禁用所有动画。这样地:

[CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];