UIView动画

1、普通动画

#import "ViewController.h"

@interface ViewController ()
{
UIImageView * _imageView;
}
@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = [UIColor whiteColor];

UIImage * image = [UIImage imageNamed:@"dog.jpg"];
_imageView = [[UIImageView alloc] initWithImage:image];
_imageView.center = CGPointMake(_imageView.frame.size.width/2, _imageView.frame.size.height/2);
[self.view addSubview:_imageView];
}

-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
//重新设置图片位置是为了重复触摸屏幕可以重复多吃动画效果
_imageView.center = CGPointMake(_imageView.frame.size.width/2, _imageView.frame.size.height/2);

[UIView beginAnimations:nil context:NULL];

//设置动画持续时间
[UIView setAnimationDuration:1.0];

//设置动画延迟1秒后开始执行
[UIView setAnimationDelay:1.0];

//设置动画重复3次
[UIView setAnimationRepeatCount:3];

//改变图片位置
_imageView.center = CGPointMake(250, 500);

//提交动画
[UIView commitAnimations];

}



2、透明化与动画弧

-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
//重新设置图片位置是为了重复触摸屏幕可以重复多吃动画效果
_imageView.center = CGPointMake(_imageView.frame.size.width/2, _imageView.frame.size.height/2);

//改变透明度
_imageView.alpha = 1.0;

[UIView beginAnimations:nil context:NULL];

//设置动画持续时间
[UIView setAnimationDuration:1.0];

//设置动画延迟1秒后开始执行
[UIView setAnimationDelay:1.0];

//设置动画重复3次
[UIView setAnimationRepeatCount:3];

[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

//改变图片位置
_imageView.center = CGPointMake(250, 500);

_imageView.alpha = 0.0;

//提交动画
[UIView commitAnimations];

}

其中动画弧的效果为：
typedef NS_ENUM(NSInteger, UIViewAnimationCurve) {
//开始后速度慢慢加快，中间处开始速度慢慢降低
 UIViewAnimationCurveEaseInOut, // slow at beginning and end

//速度慢慢变快
UIViewAnimationCurveEaseIn, // slow at beginning

//速度慢慢变慢
UIViewAnimationCurveEaseOut, // slow at end

//匀速
UIViewAnimationCurveLinear
};

3、放大、缩小、旋转
[UIView beginAnimations:nil context:NULL];

//第一个2是x方向上扩大一倍，第二个是y方向上扩大一倍
CGAffineTransform transformScale = CGAffineTransformScale(CGAffineTransformIdentity, 2, 2);

//控制旋转
CGAffineTransform transformRotate = CGAffineTransformRotate(CGAffineTransformIdentity, M_1_PI);

_imageView.transform = CGAffineTransformConcat(transformScale, transformRotate);

[UIView commitAnimations];





具体其他动画请参考博文：http://blog.csdn.net/lvdezhou/article/details/49660213

4、动画复原效果

此效果为：动画执行完后，再以动画方式复原，然后立马显示原动画的最终效果

[UIView beginAnimations:nil context:NULL];

//设置动画延迟1秒后开始执行
[UIView setAnimationDelay:1.0];

//设置动画持续时间3秒，是为了能够慢动作看清楚动画
[UIView setAnimationDuration:3.0];

//设置动画复原效果
[UIView setAnimationRepeatAutoreverses:YES];

//第一个2是x方向上扩大一倍，第二个是y方向上扩大一倍
CGAffineTransform transformScale = CGAffineTransformScale(CGAffineTransformIdentity, 2, 2);

//控制旋转
CGAffineTransform transformRotate = CGAffineTransformRotate(CGAffineTransformIdentity, M_1_PI);

_imageView.transform = CGAffineTransformConcat(transformScale, transformRotate);

[UIView commitAnimations];
下面图片录的不怎么样，但还是能看出来效果的：



5、状态监视：

监测动画的开始/结束时机

[UIView beginAnimations:nil context:NULL];

//设置动画延迟1秒后开始执行
[UIView setAnimationDelay:1.0];

[UIView setAnimationDuration:3.0];

[UIView setAnimationDelegate:self];
[UIView setAnimationWillStartSelector:@selector(startActionWithAnimationID:withContext:)];
[UIView setAnimationDidStopSelector:@selector(stopActionWithAnimationID:withFinished:withContext:)];

[UIView setAnimationRepeatAutoreverses:YES];

//第一个2是x方向上扩大一倍，第二个是y方向上扩大一倍
CGAffineTransform transformScale = CGAffineTransformScale(CGAffineTransformIdentity, 2, 2);

//控制旋转
CGAffineTransform transformRotate = CGAffineTransformRotate(CGAffineTransformIdentity, M_1_PI);

_imageView.transform = CGAffineTransformConcat(transformScale, transformRotate);

[UIView commitAnimations];
下面是两个监视函数：

- (void) startActionWithAnimationID:(NSString *)animationID withContext:(void *) context {
NSLog(@"%@---%p", animationID, context);
NSLog(@"%s", __func__);
}

- (void) stopActionWithAnimationID:(NSString *)animationID withFinished:(NSNumber *)finished withContext:(void *) context {
//其中finished可以辨别动画是否正常结束，其余两个参数都是[UIView beginAnimations:nil context:NULL]中的值
NSLog(@"%@---%@---%p", animationID, finished, context);
NSLog(@"%s", __func__);
}6、过渡动画
typedef NS_ENUM(NSInteger, UIViewAnimationTransition) {
UIViewAnimationTransitionNone,
UIViewAnimationTransitionFlipFromLeft,//从左向右翻转
UIViewAnimationTransitionFlipFromRight,//从右到左翻转
UIViewAnimationTransitionCurlUp,//向下向上翻页
UIViewAnimationTransitionCurlDown,//从上向下翻页
};

UIViewAnimationTransition transition = UIViewAnimationTransitionFlipFromLeft;

//设置动画的时候添加：
[UIView setAnimationTransition:transition forView:_imageView cache:YES];