UI_5_动画

1 建立动画块

//请求标志着动画块的开始

 [UIViewbeginAnimations:@"动画回调" context:nil];

//定义动画加速和减速方式,

 [UIViewsetAnimationCurve:UIViewAnimationCurveEaseInOut];

typedef NS_ENUM(NSInteger, UIViewAnimationCurve) {    UIViewAnimationCurveEaseInOut,         // slow at beginning and end//淡入淡出    UIViewAnimationCurveEaseIn,            // slow at beginning//淡入    UIViewAnimationCurveEaseOut,           // slow at end//淡出    UIViewAnimationCurveLinear//线性};

//动画的执行时间

[UIViewsetAnimationDuration:1.5f];

//设置代理

 [UIViewsetAnimationDelegate:self];

//animationDidStop:finished:context:带两个参数,这两个参数在回调函数中作为函数参数传入

[UIViewsetAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];

//视图的过度,过渡效果UIKit封装了四种,分别是左旋转,右旋转,向上翻页,向下翻页

typedef NS_ENUM(NSInteger, UIViewAnimationTransition) {    UIViewAnimationTransitionNone,    UIViewAnimationTransitionFlipFromLeft,    UIViewAnimationTransitionFlipFromRight,    UIViewAnimationTransitionCurlUp,    UIViewAnimationTransitionCurlDown,};

[UIViewsetAnimationTransition:UIViewAnimationTransitionCurlDownforView:imageViewcache:YES];

 //标志着动画块的结束

[UIViewcommitAnimations];

#pragma -mark 动画结束实行 的方法- (void)animationDidStop:(NSString *)name finished:(NSString *)finished context:(NSString *)context

简单说一下这个方法,其中的finished,如果动画正常结束时,它的值为1,否则为0;;在为了区分动画是否结束时有很大的作用

2 使用Core Animation Transittion

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    //touch 事件中 获取点击的view    UITouch *touch = [touches anyObject];        UIView *view = touch.view;        //创建一个CATransaction对象并设置代理,动画时长和动画加速减速    CATransition *animation = [CATransition animation];    animation.delegate = self;    animation.duration = 2.0f;    animation.timingFunction = UIViewAnimationCurveEaseInOut;        //设置动画模式    animation.type = kCATransitionPush;    //动画模式有以下四种    /* Common transition types. *///    NSString * const kCATransitionFade//    NSString * const kCATransitionMoveIn//    NSString * const kCATransitionPush//    NSString * const kCATransitionReveal    //设置动画的方向    animation.subtype = kCATransitionFromBottom;    /* Common transition subtypes. *///    NSString * const kCATransitionFromRight//    NSString * const kCATransitionFromLeft//    NSString * const kCATransitionFromTop//    NSString * const kCATransitionFromBottom    [view.layer addAnimation:animation forKey:@"move in"];    }

---翻页动画

            //翻页的动画            [UIView beginAnimations:@"动画回调" context:imageView];            [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];            [UIView setAnimationDuration:1.5f];            [UIView setAnimationDelegate:self];            [UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];                        [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:imageView cache:YES];            /*             typedef NS_ENUM(NSInteger, UIViewAnimationTransition) {             UIViewAnimationTransitionNone,             UIViewAnimationTransitionFlipFromLeft,             UIViewAnimationTransitionFlipFromRight,             UIViewAnimationTransitionCurlUp,             UIViewAnimationTransitionCurlDown,             };             */            [UIView commitAnimations];

---旋转动画

            //旋转的动画,本工程用xib创建界面,要去掉Use AutoLayout...不然每一次旋转都会自动变化得不到想要的结果            CGAffineTransform transform = CGAffineTransformRotate(imageView.transform, M_PI/4);            [UIView beginAnimations:nil context:nil];            [UIView setAnimationDuration:1];            [imageView setTransform:transform];            [UIView commitAnimations];

还有一些角度的宏定义

/*  Even though these might be more useful as long doubles, POSIX requires    that they be double-precision literals.                                   */#define M_E         2.71828182845904523536028747135266250   /* e              */#define M_LOG2E     1.44269504088896340735992468100189214   /* log2(e)        */#define M_LOG10E    0.434294481903251827651128918916605082  /* log10(e)       */#define M_LN2       0.693147180559945309417232121458176568  /* loge(2)        */#define M_LN10      2.30258509299404568401799145468436421   /* loge(10)       */#define M_PI        3.14159265358979323846264338327950288   /* pi             */#define M_PI_2      1.57079632679489661923132169163975144   /* pi/2           */#define M_PI_4      0.785398163397448309615660845819875721  /* pi/4           */#define M_1_PI      0.318309886183790671537767526745028724  /* 1/pi           */#define M_2_PI      0.636619772367581343075535053490057448  /* 2/pi           */#define M_2_SQRTPI  1.12837916709551257389615890312154517   /* 2/sqrt(pi)     */#define M_SQRT2     1.41421356237309504880168872420969808   /* sqrt(2)        */#define M_SQRT1_2   0.707106781186547524400844362104849039  /* 1/sqrt(2)      */

几个动画,淡入淡出,翻转,移动(按照自己的坐标)

 case danru:        {            CABasicAnimation *anmi = [CABasicAnimation animationWithKeyPath:@"opacity"];            //"opacity"是一个系统的key,关键字            [anmi setFromValue:[NSNumber numberWithFloat:1.0]];//初始值            [anmi setFromValue:[NSNumber numberWithFloat:0.1]];//结束值            [anmi setDuration:2];//时间            [anmi setRepeatCount:2];//重复两次            [anmi setAutoreverses:YES];//让淡入淡出的效果在模糊状态上,不立刻变得清晰            [imageView.layer addAnimation:anmi forKey:@"这个key"];            //要把这个动画 添加到layer层,,(如果想在一个动画结束后再继续别的动画,这个key就起作用)        }        case overturn:        {            CABasicAnimation *anmi = [CABasicAnimation animationWithKeyPath:@"bounds.size"];            //bounds.size  也是一个系统key            [anmi setFromValue:[NSValue valueWithCGSize:CGSizeMake(-207, -305)]];            //FromValue,,1CGSizeMake里的参数 为负数的时候 才会翻转..第一个是左右,第二个是上下            [anmi setToValue:[NSValue valueWithCGSize:imageView.bounds.size]];            [anmi setDuration:10];            //[anmi setRemovedOnCompletion:YES];//动画结束后从图层移除这个动画            [imageView.layer addAnimation:anmi forKey:@"qqq"];            break;        }                case move3:        {            CAKeyframeAnimation *anmi = [CAKeyframeAnimation animationWithKeyPath:@"position"];            NSArray *point = [NSArray arrayWithObjects:[NSValue valueWithCGPoint:CGPointMake(100, 20)],[NSValue valueWithCGPoint:CGPointMake(10, 200)],[NSValue valueWithCGPoint:CGPointMake(250, 150)], nil];            [anmi setValues:point];            [anmi setDuration:3];            [imageView.layer addAnimation:anmi forKey:@"222"];            break;        }