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iOS－UIView动画
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互联网集市收集整理的这篇技术教程文章主要介绍了iOS－UIView动画，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含5482字，纯文字阅读大概需要8分钟。
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iOS－UIView动画
今天的主题是UIView的动画。
在iOS中UIView的动画是基于CALayer动画封装。
动画就是静态的图片通过一定频率显示，给人们动画的效果。
UIView动画有基于类方法的实现和基于Block方法块的实现。
一.UIView基于类方法的实现的使用
类方法列表：
@interface UIView(UIViewAnimation) + (void)beginAnimations:(NSString *)animationID context:(void *)context; // additional context info passed to will start/did stop selectors. begin/commit can be nested + (void)commitAnimations; // starts up any animations when the top level animation is commited // no getters. if called outside animation block, these setters have no effect. + (void)setAnimationDelegate:(id)delegate; // default = nil + (void)setAnimationWillStartSelector:(SEL)selector; // default = NULL. -animationWillStart:(NSString *)animationID context:(void *)context + (void)setAnimationDidStopSelector:(SEL)selector; // default = NULL. -animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context + (void)setAnimationDuration:(NSTimeInterval)duration; // default = 0.2 + (void)setAnimationDelay:(NSTimeInterval)delay; // default = 0.0 + (void)setAnimationStartDate:(NSDate *)startDate; // default = now ([NSDate date]) + (void)setAnimationCurve:(UIViewAnimationCurve)curve; // default = UIViewAnimationCurveEaseInOut + (void)setAnimationRepeatCount:(float)repeatCount; // default = 0.0. May be fractional + (void)setAnimationRepeatAutoreverses:(BOOL)repeatAutoreverses; // default = NO. used if repeat count is non-zero + (void)setAnimationBeginsFromCurrentState:(BOOL)fromCurrentState; // default = NO. If YES, the current view position is always used for new animations -- allowing animations to "pile up" on each other. Otherwise, the last end state is used for the animation (the default). + (void)setAnimationTransition:(UIViewAnimationTransition)transition forView:(UIView *)view cache:(BOOL)cache; // current limitation - only one per begin/commit block + (void)setAnimationsEnabled:(BOOL)enabled; // ignore any attribute changes while set. + (BOOL)areAnimationsEnabled; + (void)performWithoutAnimation:(void (^)(void))actionsWithoutAnimation NS_AVAILABLE_IOS(7_0); @end
1.+ (void)beginAnimations:(NSString *)animationID context:(void *)context;
该方法是动画的起点，它总是和commitAnimation成对出现。
2.+ (void)commitAnimations
提交动画，
其他的主要是用来设置动画的代理，执行时间，延迟执行动画，是否自动的重复，重复的次数等。下面是它们的使用。
-(void)classMethodAnimation{
[UIView beginAnimations:@"animation" context:nil];
//设置动画重复次数
[UIView setAnimationRepeatCount:10.];
//开始动画改变它的位置从originPoint（0，0）变味originPoint（100，100）
anim.frame = CGRectMake(100, 100, 50, 50);
//设置动画曲线，也就是动画效果
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
//设置动画延迟
[UIView setAnimationDelay:4];
//设置动画代理
[UIView setAnimationDelegate:self];
//设置动画停止时的时间
[UIView setAnimationDidStopSelector:@selector(animationStop)];
//设置动画执行时间
[UIView setAnimationDuration:10];
//设置动画是否自动反转
[UIView setAnimationRepeatAutoreverses:YES];
//设置动画开始时调用的方法
[UIView setAnimationWillStartSelector:@selector(startAnimation)];
[UIView commitAnimations];
}
控制台运行输出结果：（主要是动画代理方法的调用，动画效果见demo）
2015-04-06 08:28:14.230 ViewAnimation[1299:49180] 动画停止了-[ViewController startAnimation]
2015-04-06 08:28:16.227 ViewAnimation[1299:49180] 动画停止了-[ViewController animationStop]
二.UIView动画block方法
@interface UIView(UIViewAnimationWithBlocks) + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); // delay = 0.0, options = 0 + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations NS_AVAILABLE_IOS(4_0); // delay = 0.0, options = 0, completion = NULL + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay usingSpringWithDamping:(CGFloat)dampingRatio initialSpringVelocity:(CGFloat)velocity options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion NS_AVAILABLE_IOS(7_0); + (void)transitionWithView:(UIView *)view duration:(NSTimeInterval)duration options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); + (void)transitionFromView:(UIView *)fromView toView:(UIView *)toView duration:(NSTimeInterval)duration options:(UIViewAnimationOptions)options completion:(void (^)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); // toView added to fromView.superview, fromView removed from its superview + (void)performSystemAnimation:(UISystemAnimation)animation onViews:(NSArray *)views options:(UIViewAnimationOptions)options animations:(void (^)(void))parallelAnimations completion:(void (^)(BOOL finished))completion NS_AVAILABLE_IOS(7_0); @end
-(void)blockAnimation{
[UIView animateWithDuration:5 animations:^{
anim.frame = CGRectMake(100, 100, 50, 50);
}];
[UIView animateWithDuration:5 animations:^{
anim.frame = CGRectMake(200, 200, 50, 50);
anim.backgroundColor = [UIColor grayColor];
} completion:^(BOOL finished) {
NSLog(@"block animation complet operation");
}];
}
运行控制态输出效果：
2015-04-06 08:33:49.944 ViewAnimation[1359:51632] block animation complet operation
两个动画小结：
通过block把动画内容包含到block中实现动画，使用beginAnimation和commitsAnimation函数对包含动画，都是通过参数设置动画的执行属性。
原文：http://blog.csdn.net/fanyiyao980404514/article/details/44899423
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