UIViewAnimation 详解

UIAnimation

UIViewAnimation 动画函数分析

@interface UIView(UIViewAnimation)
// 准备开始动画，animationID标识动画，context自定义消息
+ (void)beginAnimations:(NSString *)animationID context:(void *)context; 

// 运行动画
+ (void)commitAnimations;                                                 

// 设置代理 default = nil
+ (void)setAnimationDelegate:(id)delegate;   

// 将要开始动画时执行某些方法                      
+ (void)setAnimationWillStartSelector:(SEL)selector; 

// 动画结束执行某些操作
+ (void)setAnimationDidStopSelector:(SEL)selector; 

// default = 0.2 ，设置动画持续事件
+ (void)setAnimationDuration:(NSTimeInterval)duration;

// default = 0.0 , 设置动画开始时间
+ (void)setAnimationDelay:(NSTimeInterval)delay;   

// default = now ([NSDate date]) ， 设置动画开始日期                 
+ (void)setAnimationStartDate:(NSDate *)startDate; 

// default = UIViewAnimationCurveEaseInOut 设置动画运动效果【注1】            
+ (void)setAnimationCurve:(UIViewAnimationCurve)curve;      

// default = 0.0. May be fractional  设置动画重复次数        
+ (void)setAnimationRepeatCount:(float)repeatCount; 

// default = NO. used if repeat count is non-zero
//动画自动重复，重复次数不能为0
+ (void)setAnimationRepeatAutoreverses:(BOOL)repeatAutoreverses;    

// 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)setAnimationBeginsFromCurrentState:(BOOL)fromCurrentState;  

// current limitation - only one per begin/commit 
// 动画效果【注2】
+ (void)setAnimationTransition:(UIViewAnimationTransition)transition forView:(UIView *)view cache:(BOOL)cache;  

// ignore any attribute changes while set.
+ (void)setAnimationsEnabled:(BOOL)enabled;     

// 返回一个bool值，表示动画是否结束了                 
+ (BOOL)areAnimationsEnabled;
@end

UIViewAnimation  block 动画

@interface UIView(UIViewAnimationWithBlocks)

 
+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)