【iOS学习】CATransaction.h阅读笔记

//为当前线程开启一个新的事务

+ (void)begin;

//提交当前事务期间所做的全部修改，如果不存在当前事务则会引发异常。

+ (void)commit;

//提交一个现存的隐式事务。将推迟提交直到实际提交的嵌套的显式事务已经完成。

+ (void)flush;

//锁（待续。。。）

+ (void)lock;

+ (void)unlock;

//获取和设定事务持续的时间，默认是0.25s

+ (CFTimeInterval)animationDuration;

+ (void)setAnimationDuration:(CFTimeInterval)dur;

//待续（。。。）

+ (nullable CAMediaTimingFunction *)animationTimingFunction;

+ (void)setAnimationTimingFunction:(nullable CAMediaTimingFunction *)function;

//暂时禁用图层的行为

+ (BOOL)disableActions;

+ (void)setDisableActions:(BOOL)flag;

//block

#if __BLOCKS__

+ (nullable void (^)(void))completionBlock;

+ (void)setCompletionBlock:(nullable void (^)(void))block;

#endif

//设定属性值

+ (nullable id)valueForKey:(NSString *)key;

+ (void)setValue:(nullable id)anObject forKey:(NSString *)key;

@end

/** 属性值 **/

CA_EXTERN NSString * const kCATransactionAnimationDuration

__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);

CA_EXTERN NSString * const kCATransactionDisableActions

__OSX_AVAILABLE_STARTING (__MAC_10_5, __IPHONE_2_0);

CA_EXTERN NSString * const kCATransactionAnimationTimingFunction

__OSX_AVAILABLE_STARTING (__MAC_10_6, __IPHONE_3_0);

CA_EXTERN NSString * const kCATransactionCompletionBlock

__OSX_AVAILABLE_STARTING (__MAC_10_6, __IPHONE_4_0);

NS_ASSUME_NONNULL_END