Add a UIView animation with a layer

Projects sometimes encounter the use of UIView to add animation, here I think it is better to add animation on the layer, because you can set the animation properties in detail to facilitate understanding

Here is a rotation animation:

-(void) Roundbtnaction: (ID) Sender {


UIButton * Button = (UIButton *) sender;

Animation self-rotation (layer animation):
cabasicanimation* rotationanimation;

Rotationanimation = [cabasicanimation animationwithkeypath:@ "Transform.rotation.z"];

Rotationanimation.tovalue = [NSNumber numberwithfloat:m_pi * 1];

[Camediatimingfunction Functionwithname:kcamediatimingfunctioneaseineaseout];

Rotationanimation.duration = 1;

Rotationanimation.repeatcount = 0;//You can set to the maximum integer value

Rotationanimation.cumulative = NO;

Rotationanimation.removedoncompletion = NO;

Rotationanimation.fillmode = Kcafillmodeforwards;

[Button.layer addanimation:rotationanimation Forkey: @ "Rotation"];

}

Original: http://www.cnblogs.com/A--G/p/4679316.html

Add a UIView animation with a layer