[英]move a CALayer (add animation)
well I have a CALayer layer
and I would like to move it, with a CADisplaylink. 好吧,我有一个CALayer
layer
,我想用CADisplaylink移动它。 Like : 喜欢 :
layer.center=CGPointMake(layer.center.x + 10, layer.center.y + 10);
but I can't use center
or position
for the layer.Here is my problem, I want to make it move like it was a uiimageview. 但是我不能使用图层的
center
或position
。这是我的问题,我想让它像uiimageview一样移动。
To move layer try to use this method 要移动图层,请尝试使用此方法
-(void)moveLayer:(CALayer*)layer to:(CGPoint)point{
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
animation.fromValue = [layer valueForKey:@"position"];
animation.toValue = [NSValue valueWithCGPoint:point];
layer.position = point;
[layer addAnimation:animation forKey:@"position"];
}
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