iOS 一些简单动画

1.旋转动画

CABasicAnimation* rotationAnimation;

rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];

rotationAnimation.toValue = [NSNumber numberWithFloat: M_PI * 2.0 ];

[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

rotationAnimation.duration = 2;

rotationAnimation.repeatCount = 1000;//你可以设置到最大的整数值

rotationAnimation.cumulative = NO;

rotationAnimation.removedOnCompletion = NO;

rotationAnimation.fillMode = kCAFillModeForwards;

[self.image.layer addAnimation:rotationAnimation forKey:@"Rotation"];

2.缩放动画

CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];

scaleAnimation.fromValue = [NSNumber numberWithFloat:0.0];

scaleAnimation.toValue = [NSNumber numberWithFloat:1.0];

scaleAnimation.duration = 1.0f;

scaleAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

scaleAnimation.removedOnCompletion = NO;

scaleAnimation.fillMode = kCAFillModeForwards;

[self.image.layer addAnimation:scaleAnimation forKey:@"Scale"];

3.透明度变化

CABasicAnimation *opacityAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];

opacityAnimation.fromValue = [NSNumber numberWithFloat:1];

opacityAnimation.toValue = [NSNumber numberWithFloat:0];

opacityAnimation.duration = 2.0f;

opacityAnimation.removedOnCompletion = NO;

opacityAnimation.fillMode = kCAFillModeForwards;

[self.image.layer addAnimation:opacityAnimation forKey:@"opacity"];

4.创建动画组，把动画放在一个组里展示

CAAnimationGroup *animationGroup = [CAAnimationGroup animation];

animationGroup.duration = 2.0f;

animationGroup.autoreverses = YES;   //是否重播，原动画的倒播

animationGroup.repeatCount = NSNotFound;//HUGE_VALF;     //HUGE_VALF,源自math.h

[animationGroup setAnimations:[NSArray arrayWithObjects:rotationAnimation, scaleAnimation, opacityAnimation,nil]];