常见的动画效果（二）

使用前

需引入QuartzCore.framework, 并在相关文件中加入 #import "QuartzCore/QuartzCore.h"

定义

shakeFeedbackOverlay为UIImageView

设置

self.shakeFeedbackOverlay.alpha = 0.0;

self.shakeFeedbackOverlay.layer.cornerRadius = 10.0; //设置圆角半径

1、图像左右抖动

CABasicAnimation* shake = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];

shake.fromValue = [NSNumber numberWithFloat:-M_PI/32];

shake.toValue = [NSNumber numberWithFloat:+M_PI/32];

shake.duration = 0.1;

shake.autoreverses = YES; //是否重复

shake.repeatCount = 4;

[self.shakeFeedbackOverlay.layer addAnimation:shake forKey:@"shakeAnimation"];

self.shakeFeedbackOverlay.alpha = 1.0;

[UIView animateWithDuration:2.0 delay:0.0 options:UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction animations:^{ self.shakeFeedbackOverlay.alpha = 0.0; //透明度变0则消失 } completion:nil];

2、图像顺时针旋转

CABasicAnimation* shake = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];

shake.fromValue = [NSNumber numberWithFloat:0];

shake.toValue = [NSNumber numberWithFloat:2*M_PI];

shake.duration = 0.8; shake.autoreverses = NO;

shake.repeatCount = 1;

[self.shakeFeedbackOverlay.layer addAnimation:shake forKey:@"shakeAnimation"];

self.shakeFeedbackOverlay.alpha = 1.0;

[UIView animateWithDuration:10.0 delay:0.0 options:UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction animations:^{ self.shakeFeedbackOverlay.alpha = 0.0; } completion:nil];

3、图像关键帧动画

CAKeyframeAnimation *animation = [CAKeyframeAnimation animation];

CGMutablePathRef aPath =CGPathCreateMutable();

CGPathMoveToPoint(aPath, nil, 20, 20);

CGPathAddCurveToPoint(aPath, nil, 160, 30, 220, 220, 240, 420);

animation.path = aPath;

animation.autoreverses = YES;

animation.duration = 2;

animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];

animation.rotationMode = @"auto";

[ballView.layer addAnimation:animationforKey:@"position"];

4、组合动画 CAAnimationGroup

CABasicAnimation *flip = [CABasicAnimation animationWithKeyPath:@"transform.rotation.y"];

flip.toValue = [NSNumbernumberWithDouble:-M_PI];

CABasicAnimation *scale= [CABasicAnimation animationWithKeyPath:@"transform.scale"];

scale.toValue = [NSNumbernumberWithDouble:12];

scale.duration = 1.5;

scale.autoreverses = YES;

CAAnimationGroup *group = [CAAnimationGroup animation];

group.animations = [NSArray arrayWithObjects:flip, scale,nil];

group.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

group.duration = 3;

group.fillMode = kCAFillModeForwards;

group.removedOnCompletion =NO;

[ballView.layer addAnimation:groupforKey:@"position"];

5、指定时间内旋转图片

//启动定时器旋转光圈

- (void)startRotate

{

self.rotateTimer = [NSTimer scheduledTimerWithTimeInterval:0.02

target:self

selector:@selector(rotateGraduation)

userInfo:nil

repeats:YES];

}

//关闭定时器

- (void)stopTimer

{

if ([self.rotateTimerisValid])

{

[self.rotateTimerinvalidate];

self.rotateTimer =nil;

}

//旋转动画

- (void)rotateGraduation

{

self.timeCount--;

if (self.timeCount == 0)

{

[self stopTimer];

// doSomeThing //旋转完毕可以干点别的

self.timeCount = 25;

}

else

{

//计算角度旋转

static CGFloat radian = 150 * (M_2_PI / 360);

CGAffineTransform transformTmp =self.lightImageView.transform;

transformTmp = CGAffineTransformRotate(transformTmp, radian);

self.lightImageView.transform= transformTmp;

};

}

调用方法

self.timeCount = 25; //动画执行25次

[self startRotate];

注：本文部分代码摘抄自《ios5核心框架》一书，原文有改动

6：移动图片到右下角

//向右下角缩小移动
- (IBAction)buttonClick:(id)sender
{CGPoint fromPoint = imageView.center;//路径曲线
    UIBezierPath *movePath = [UIBezierPath bezierPath];[movePath moveToPoint:fromPoint];CGPoint toPoint = CGPointMake(300, 460);[movePath addQuadCurveToPoint:toPointcontrolPoint:CGPointMake(toPoint.x,fromPoint.y)];//关键帧
    CAKeyframeAnimation *moveAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"];moveAnim.path = movePath.CGPath;moveAnim.removedOnCompletion = YES;//旋转变化
    CABasicAnimation *scaleAnim = [CABasicAnimation animationWithKeyPath:@"transform"];scaleAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];//x，y轴缩小到0.1,Z 轴不变
    scaleAnim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.1, 0.1, 1.0)];scaleAnim.removedOnCompletion = YES;//透明度变化
    CABasicAnimation *opacityAnim = [CABasicAnimation animationWithKeyPath:@"alpha"];opacityAnim.fromValue = [NSNumber numberWithFloat:1.0];opacityAnim.toValue = [NSNumber numberWithFloat:0.1];opacityAnim.removedOnCompletion = YES;//关键帧，旋转，透明度组合起来执行
    CAAnimationGroup *animGroup = [CAAnimationGroup animation];animGroup.animations = [NSArray arrayWithObjects:moveAnim, scaleAnim,opacityAnim, nil];animGroup.duration = 1;[imageView.layer addAnimation:animGroup forKey:nil];
}

7 ：移动图片到右下角

 //向右边旋转
- (IBAction)rightRotateBtnClick:(id)sender
{CGPoint fromPoint = imageView.center;UIBezierPath *movePath = [UIBezierPath bezierPath];[movePath moveToPoint:fromPoint];CGPoint toPoint = CGPointMake(fromPoint.x +100 , fromPoint.y) ;[movePath addLineToPoint:toPoint];CAKeyframeAnimation *moveAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"];moveAnim.path = movePath.CGPath;CABasicAnimation *scaleAnim = [CABasicAnimation animationWithKeyPath:@"transform"];scaleAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];//沿Z轴旋转
    scaleAnim.toValue = [NSValue valueWithCATransform3D: CATransform3DMakeRotation(M_PI,0,0,1)];//沿Y轴旋转// scaleAnim.toValue = [NSValue valueWithCATransform3D: CATransform3DMakeRotation(M_PI,0,1.0,0)];//沿X轴旋转// scaleAnim.toValue = [NSValue valueWithCATransform3D: CATransform3DMakeRotation(M_PI,1.0,0,0)];
    scaleAnim.cumulative = YES;scaleAnim.duration =1;//旋转2遍，360度
    scaleAnim.repeatCount =2;imageView.center = toPoint;scaleAnim.removedOnCompletion = YES;CAAnimationGroup *animGroup = [CAAnimationGroup animation];animGroup.animations = [NSArray arrayWithObjects:moveAnim, scaleAnim, nil];animGroup.duration = 2;[imageView.layer addAnimation:animGroup forKey:nil];}

8：图片旋转360度

//图片旋转360度
- (IBAction)rota360BtnClick:(id)sender
{CABasicAnimation *animation = [ CABasicAnimationanimationWithKeyPath: @"transform" ];animation.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];//围绕Z轴旋转，垂直与屏幕
    animation.toValue = [ NSValue valueWithCATransform3D: CATransform3DMakeRotation(M_PI, 0, 0, 1.0) ];animation.duration = 1;//旋转效果累计，先转180度，接着再旋转180度，从而实现360旋转
   animation.cumulative = YES;animation.repeatCount = 2;//在图片边缘添加一个像素的透明区域，去图片锯齿
    CGRect imageRrect = CGRectMake(0, 0,imageView.frame.size.width, imageView.frame.size.height);UIGraphicsBeginImageContext(imageRrect.size); [imageView.image drawInRect:CGRectMake(1,1,imageView.frame.size.width-2,imageView.frame.size.height-2)];imageView.image = UIGraphicsGetImageFromCurrentImageContext();UIGraphicsEndImageContext();[imageView.layer addAnimation:animation forKey:nil];
}

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