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+ (void)beginAnimations:(NSString *)animationID context:(void *)context; // 开始准备动画
+ (void)commitAnimations; // 运行动画
// 没有get方法,下面的set在快外调用无效
+ (void)setAnimationDelegate:(id)delegate; // 委托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动画时间
+ (void)setAnimationDelay:(NSTimeInterval)delay; // default = 0.0延迟多少时间开始执行动画
+ (void)setAnimationStartDate:(NSDate *)startDate; // default = now ([NSDate date])动画开始日期?不知道啥用.- -
+ (void)setAnimationCurve:(UIViewAnimationCurve)curve; // default = UIViewAnimationCurveEaseInOut动画方式
+ (void)setAnimationRepeatCount:(float)repeatCount; // default = 0.0. May be fractional重复次数
+ (void)setAnimationRepeatAutoreverses:(BOOL)repeatAutoreverses; // default = NO. YES的话,动画(非最后一次)结束后动态复原到最开始状态
+ (void)setAnimationBeginsFromCurrentState:(BOOL)fromCurrentState; // default = NO. YES,停止之前的动画,从现在这里开始新动画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; // 添加动画到view上,cache是YES的时候比较高效,但是动画过程中不能更新界面上的内容,NO时每一帧都重新画,可以实时更新
+ (void)setAnimationsEnabled:(BOOL)enabled; // 是否忽略一些动画设置
+ (BOOL)areAnimationsEnabled;
一个动画的代码
[UIView beginAnimations:nil context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveLinear];
[UIView setAnimationDuration:2.7];
[UIView setAnimationTransition:transition forView:self.view cache:YES];
// operation>>>
[self.view exchangeSubviewAtIndex:0 withSubviewAtIndex:1];
// end<<<<<<
[UIView commitAnimations];
其中transition取值范围
typedef enum {
UIViewAnimationTransitionNone,
UIViewAnimationTransitionFlipFromLeft,
UIViewAnimationTransitionFlipFromRight,
UIViewAnimationTransitionCurlUp,
UIViewAnimationTransitionCurlDown,
} UIViewAnimationTransition;
特点:基础,使用方便,但是效果有限
二.block方式:使用UIView类的UIViewAnimationWithBlocks扩展
函数说明
+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0);//间隔,延迟,动画参数(好像没用?),界面更改块,结束块
+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion
+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations
+ (void)transitionWithView:(UIView *)view duration:(NSTimeInterval)duration options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))
+ (void)transitionFromView:(UIView *)fromView toView:(UIView *)toView duration:(NSTimeInterval)duration options:(UIViewAnimationOptions)options completion:(void(^)(BOOL finished))completion __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_4_0); //toView added to fromView.superview, fromView removed from its superview界面替换,这里的options参数有效
举例:
[UIView animateWithDuration:0.7 delay:0 options:0 animations:^(){
self.view.alpha = 0.2;
[self.view exchangeSubviewAtIndex:1 withSubviewAtIndex:0];
self.view.alpha = 1;
} completion:^(BOOL finished)
{
}];
当areAnimationsEnabled为NO时,上面不能动画显示
[UIView transitionFromView:lImage toView:mImage duration:0.7 options:options completion:^(BOOL finished)
{
if (finished) {
[self.view addSubview:lImage];
[self.view sendSubviewToBack:lImage];
[self.view sendSubviewToBack:mImage];
}
}];
options取值范围
enum {
UIViewAnimationOptionLayoutSubviews = 1 << 0,
UIViewAnimationOptionAllowUserInteraction = 1 << 1, // turn on user interaction while animating
UIViewAnimationOptionBeginFromCurrentState = 1 << 2, // start all views from current value, not initial value
UIViewAnimationOptionRepeat = 1 << 3, // repeat animation indefinitely
UIViewAnimationOptionAutoreverse = 1 << 4, // if repeat, run animation back and forth
UIViewAnimationOptionOverrideInheritedDuration = 1 << 5, // ignore nested duration
UIViewAnimationOptionOverrideInheritedCurve = 1 << 6, // ignore nested curve
UIViewAnimationOptionAllowAnimatedContent = 1 << 7, // animate contents (applies to transitions only)
UIViewAnimationOptionShowHideTransitionViews = 1 << 8, // flip to/from hidden state instead of adding/removing
UIViewAnimationOptionCurveEaseInOut = 0 << 16, // default
UIViewAnimationOptionCurveEaseIn = 1 << 16,
UIViewAnimationOptionCurveEaseOut = 2 << 16,
UIViewAnimationOptionCurveLinear = 3 << 16,
UIViewAnimationOptionTransitionNone = 0 << 20, // default
UIViewAnimationOptionTransitionFlipFromLeft = 1 << 20,
UIViewAnimationOptionTransitionFlipFromRight = 2 << 20,
UIViewAnimationOptionTransitionCurlUp = 3 << 20,
UIViewAnimationOptionTransitionCurlDown = 4 << 20,
UIViewAnimationOptionTransitionCrossDissolve = 5 << 20,//ios5
UIViewAnimationOptionTransitionFlipFromTop = 6 << 20,//ios5
UIViewAnimationOptionTransitionFlipFromBottom = 7 << 20,//ios5
};
typedef NSUInteger UIViewAnimationOptions;
特点:快捷方便,效果更多.可以如上示例1那样实现界面个元素属性渐进变化的动态展示
对于不太复杂的动画,上面的写法很精练,因为只有一条语句,如果动画太过复杂了,写在这样一条语句中就会显得冗长了,对于代码调试没那么方非常方便。标签:
原文地址:http://www.cnblogs.com/iOS-mt/p/4193128.html