)duration; + (SCNAction *)moveBy:(SCNVector3)delta duration:(NSTimeInterval)duration; b.移动到指定的位置 +...(SCNAction *)moveTo:(SCNVector3)location duration:(NSTimeInterval)duration; 旋转 a.相对于当前位置旋转 + (SCNAction...*)rotateByX:(CGFloat)xAngle y:(CGFloat)yAngle z:(CGFloat)zAngle duration:(NSTimeInterval)duration; +...:(NSTimeInterval)sec; b.透明减小到0 + (SCNAction *)fadeOutWithDuration:(NSTimeInterval)sec; c.透明度逐渐递增 + (SCNAction...)sec; b.等待随机时间 + (SCNAction *)waitForDuration:(NSTimeInterval)sec withRange:(NSTimeInterval)durationRange
+ scheduledTimerWithTimeInterval: invocation: repeats: + (NSTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval...+ timerWithTimeInterval: invocation: repeats: + (NSTimer *)timerWithTimeInterval:(NSTimeInterval)ti invocation...run]; 停止 Timer – invalidate Timer设置 – isValid – fireDate – setFireDate: – timeInterval – userInfo NSTimeInterval...类：是一个浮点数字，用来定义秒 例子： iphone为我们提供了一个很强大得时间定时器 NSTimer 他可以完成任何定时功能： 我们使用起来也很简单，只要记住三要素就可以，具体得三要素是：时间间隔NSTimeInterval...浮点型，事件代理 delegate和事件处理方法@selector（）；就可以用 + (NSTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval)
:(NSTimeInterval)sec; + (SKTransition *)fadeWithColor:(SKColor *)color duration:(NSTimeInterval)sec;...:(NSTimeInterval)sec; + (SKTransition *)revealWithDirection:(SKTransitionDirection)direction duration...NSTimeInterval)sec; + (SKTransition *)doorsOpenHorizontalWithDuration:(NSTimeInterval)sec; + (SKTransition...:(NSTimeInterval)sec; + (SKTransition *)doorsCloseVerticalWithDuration:(NSTimeInterval)sec; + (SKTransition...*)doorwayWithDuration:(NSTimeInterval)sec; 动画效果还挺多的,就不一一演示了,我在使用这个方法的时候,遇到了一个大坑。
//获取gif图片的总时长和循环次数 - (NSTimeInterval)durationForGifData:(NSData *)data{ //将GIF图片转换成对应的图片源 CGImageSourceRef...CGImageSourceGetCount(gifSource); //定义数组存储拆分出来的图片 NSMutableArray* frames = [[NSMutableArray alloc] init]; NSTimeInterval...UIImage imageWithCGImage:imageRef]; //将图片加入数组中 [frames addObject:imageName]; NSTimeInterval...每一帧时间间隔.png //获取GIF图片每帧的时长 - (NSTimeInterval)gifImageDeleyTime:(CGImageSourceRef)imageSource index:(...NSInteger)index { NSTimeInterval duration = 0; CFDictionaryRef imageProperties = CGImageSourceCopyPropertiesAtIndex
UIView动画 @interface UIView(UIViewAnimationWithBlocks) + (void)animateWithDuration:(NSTimeInterval)duration...delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations...(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); + (void)animateWithDuration:(NSTimeInterval...)duration delay:(NSTimeInterval)delay usingSpringWithDamping:(CGFloat)dampingRatio initialSpringVelocity...)duration delay:(NSTimeInterval)delay options:(UIViewKeyframeAnimationOptions)options animations:(void
尤其是小型游戏，然而对于初学者时常会注意不到其中的内存释放问题，将其基本用法总结如下： 一、初始化方法：有五种初始化方法，分别是 + (NSTimer *)timerWithTimeInterval:(NSTimeInterval...:NSDefaultRunLoopMode]; //开始循环 [timer fire]; } + (NSTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval... scheduledTimerWithTimeInterval:1 invocation:invo repeats:YES]; + (NSTimer *)timerWithTimeInterval:(NSTimeInterval...self selector:@selector(myLog) userInfo:nil repeats:NO] + (NSTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval...@property NSTimeInterval tolerance; 这是7.0之后新增的一个属性，因为NSTimer并不完全精准，通过这个值设置误差范围。
没有必要啊，这就是考验我们对时间的操作，代码实现如下： 代码实现 #pragma mark -- 判断是否弹出广告 - (BOOL)isLoadAdvertIn { //当前时间戳 NSTimeInterval...interval = [[NSDate date] timeIntervalSince1970]; NSTimeInterval time00 = [GDDateUtil setCurrentlyDaySetHour...:00 setMinute:00 setSec:00];//当前天00点的时间戳 NSTimeInterval time12 = [GDDateUtil setCurrentlyDaySetHour...:12 setMinute:00 setSec:00];//当前天12点的时间戳 NSTimeInterval time14 = [GDDateUtil setCurrentlyDaySetHour...:14 setMinute:00 setSec:00];//当前天14点的时间戳 NSTimeInterval time24 = [GDDateUtil setCurrentlyDaySetHour
二、UIView动画的几个方法 + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations...UIView animateWithDuration:1 animations:^{ _myView.alpha=0; }]; + (void)animateWithDuration:(NSTimeInterval... if (finished) { _myView.alpha=1; } }]; + (void)animateWithDuration:(NSTimeInterval...)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void...+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay usingSpringWithDamping
instancetype)requestWithURL:(NSURL *)URL cachePolicy:(NSURLRequestCachePolicy)cachePolicy timeoutInterval:(NSTimeInterval...instancetype)initWithURL:(NSURL *)URL cachePolicy:(NSURLRequestCachePolicy)cachePolicy timeoutInterval:(NSTimeInterval...*/ @property (readonly) NSURLRequestCachePolicy cachePolicy; //只读属性 获取请求的超时时限 @property (readonly) NSTimeInterval...nullable, copy) NSURL *URL; //设置请求的缓存策略 @property NSURLRequestCachePolicy cachePolicy; //设置超时时间 @property NSTimeInterval
)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval...willAnimateFirstHalfOfRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval...willAnimateSecondHalfOfRotationFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation duration:(NSTimeInterval...视图旋转之前自动调用 -(void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval
从现在开始的24小时 NSTimeInterval secondsPerDay = 24*60*60; NSDate *tomorrow = [NSDate dateWithTimeIntervalSinceNow...根据已有日期创建日期 NSTimeInterval secondsPerDay1 = 24*60*60; NSDate *now = [NSDate date]; NSDate...两个日期之间相隔多少秒 NSTimeInterval secondsBetweenDates= [yesterDay timeIntervalSinceDate:now]; NSLog(
创建当前时间 NSDate *date = [NSDate date]; 从现在开始的24小时 NSTimeInterval a_day = 24*60*60; NSDate...*tomorrow = [NSDate dateWithTimeIntervalSinceNow:a_day]; 根据已有日期创建日期 NSTimeInterval a_day = 24*60...laterDate = [tomorrow laterDate:date]; NSLog(@"laterDate = %@",laterDate); //两个日期之间相隔多少秒 NSTimeInterval
－－ 下面说说NSTImer, 一样我们直接看头文件并用注释说明 @interface NSTimer : NSObject + (NSTimer *)timerWithTimeInterval:(NSTimeInterval...响应事件用的NSIvocation, 系统为自动帮你将timer添加到currentRunLoop中，defaultMode + (NSTimer *)timerWithTimeInterval:(NSTimeInterval...PerformanceSelector, userInfo中可以用来传参数，需要手动添加到RunLoop中 + (NSTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval...userInfo可以用来传递参数， 系统会自动帮你将timer添加到currentRunLoop中, defaultMode + (NSTimer *)timerWithTimeInterval:(NSTimeInterval...timeInterval; //只读属性， 获取当前timer的触发间隔 @property NSTimeInterval tolerance NS_AVAILABLE(10_9, 7_0);
startDate =[date dateFromString:startTime]; NSDate *endDdate = [date dateFromString:endTime]; NSTimeInterval...startInterval = [startDate timeIntervalSince1970]*1; NSTimeInterval endInterval = [endDdate timeIntervalSince1970...]*1; NSTimeInterval value = endInterval - startInterval; // 天 int day = (int)value /
MPMovieSourceTypeFile, // 文件类型 MPMovieSourceTypeStreaming // 数据流 }; @property (nonatomic, readonly) NSTimeInterval...duration; 视频文件的时长 @property (nonatomic, readonly) NSTimeInterval playableDuration; 缓存完成能够播放的时长 @property...(nonatomic, readonly) CGSize naturalSize; 视频的原始大小 @property (nonatomic) NSTimeInterval initialPlaybackTime...; 播放器开始播放的时间 @property (nonatomic) NSTimeInterval endPlaybackTime; 播放器结束播放的时间 @property (nonatomic) BOOL...play; //调用此方法进行视频播放的暂停操作 - (void)pause; //调用此方法停止视频播放 - (void)stop; //当前视频已播放的时间 @property(nonatomic) NSTimeInterval
setAnimationDuration:5]; 提交动画(真正开始做动画) [UIView commitAnimations]; 13 块动画 +(void)animateWithDuration:(NSTimeInterval...void))animations completion:(void (^__nullable)(BOOL finished))completion; +(void)animateWithDuration:(NSTimeInterval...)duration animations:(void (^)(void))animations; +(void)animateWithDuration:(NSTimeInterval)**duration...** delay:(NSTimeInterval)**delay** usingSpringWithDamping:(CGFloat)**dampingRatio** initialSpringVelocity
两个方法： + (void)transitionWithView:(UIView *)view duration:(NSTimeInterval)duration options:(UIViewAnimationOptions...+ (void)transitionFromView:(UIView *)fromView toView:(UIView *)toView duration:(NSTimeInterval)duration
- (BOOL)prepareToPlay; 开始播放音频 - (BOOL)play; 在一段时间间隔后播放 - (BOOL)playAtTime:(NSTimeInterval)time; 暂停播放，...BOOL playing; 获取当前音频声道数 @property(readonly) NSUInteger numberOfChannels; 获取当前音频时长 @property(readonly) NSTimeInterval...设置播放速度，1为正常，0.5为一半速度，2.0为2倍速度 @property float rate; 设置当前播放的时间点 @property NSTimeInterval currentTime;
kCVPixelBufferLock_ReadOnly); CVPixelBufferLockBaseAddress(dstPixelBuffer, kCVPixelBufferLock_ReadOnly); NSTimeInterval...width:CVPixelBufferGetHeight(srcPixelBuffer) height:CVPixelBufferGetWidth(srcPixelBuffer)]; NSTimeInterval...dstPixelBuffer),CVPixelBufferGetHeight(srcPixelBuffer),CVPixelBufferGetWidth(srcPixelBuffer)); NSTimeInterval...CVPixelBufferGetWidthOfPlane(srcPixelBuffer, 0), CVPixelBufferGetHeightOfPlane(srcPixelBuffer, 0)); NSTimeInterval...CVPixelBufferGetWidthOfPlane(srcPixelBuffer, 0), CVPixelBufferGetHeightOfPlane(srcPixelBuffer, 0)); NSTimeInterval
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