IOS动画学习（一）

IOS动画学习（一）

（1）基础动画CABasicAnimation

//基础动画
    CABasicAnimation *base = [CABasicAnimation animationWithKeyPath:@"position"];
    
    base.duration = 1.0f;
    
    base.toValue = [NSValue valueWithCGPoint:CGPointMake(30, 40)];
    
    
    base.delegate = self;
    
    [self.view.layer addAnimation:base forKey:@"basean"];
    
  
  
  //委托函数  
    -(void)animationDidStart:(CAAnimation *)anim {
    
    
    NSLog(@"动画开始");
}

-(void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {
    

    NSLog(@"动画结束");
}

（2）关键帧动画CAKeyframeAnimation

//关键帧动画(path的优先级比values得高，两个都设置优先执行path)
    CAKeyframeAnimation *keyFrame = [CAKeyframeAnimation animationWithKeyPath:@"position"];
    
    keyFrame.duration = 2.0f;
    
    keyFrame.repeatCount = 10;
    keyFrame.values = @[
                        [NSValue valueWithCGPoint:CGPointMake(80, 220)],
                        [NSValue valueWithCGPoint:CGPointMake(90, 230)],
                        [NSValue valueWithCGPoint:CGPointMake(100, 240)],
                        [NSValue valueWithCGPoint:CGPointMake(110, 250)]
                        ];
    
    keyFrame.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; //淡出淡入
    
    
//    CGMutablePathRef path = CGPathCreateMutable();
//    CGPathMoveToPoint(path, NULL, self.view.layer.position.x, self.view.layer.position.y);
//    
//    CGPathAddCurveToPoint(path, NULL, 80, 220, 90, 230, 100, 240);//贝塞尔曲线（三点确定一条曲线）
//    
//    keyFrame.path = path;
//    
//    CGPathRelease(path);
    
    
    keyFrame.autoreverses = YES;
    
    [self.view.layer addAnimation:keyFrame forKey:@"keyFrame"];

（3）转场动画CATransition

//转换动画
    CATransition *transi = [CATransition animation];
    
    transi.type = kCATransitionMoveIn; //新视图覆盖旧试图上
    
    transi.subtype = kCATransitionFromLeft; //过渡动画，从左侧
    
    transi.duration = 1.0f;
    
    [self.view.layer addAnimation:transi forKey:@"transi"];

（4）组动画CAAnimationGroup

//绕z轴旋转
    CABasicAnimation *ratate = [CABasicAnimation animationWithKeyPath:@"transform.ratation.z"];
    
    ratate.toValue = [NSNumber numberWithFloat:M_PI * 3];
    ratate.removedOnCompletion = NO;
    
    ratate.autoreverses = YES;
    ratate.duration = 1.0f;
    
    //移动动画
    CAKeyframeAnimation *positionKey = [CAKeyframeAnimation animationWithKeyPath:@"position"];
    
    CGPoint endPoint = CGPointMake(50, 300);
    
    CGMutablePathRef path = CGPathCreateMutable();
    CGPathMoveToPoint(path, NULL, self.view.layer.position.x, self.view.layer.position.y);
    
    CGPathAddCurveToPoint(path, NULL, 160, 280, -30, 300, endPoint.x, endPoint.y);
    
    positionKey.path = path;
    
    positionKey.autoreverses = YES;
    positionKey.removedOnCompletion = NO;
    
    
    
    //组动画
    CAAnimationGroup *group = [CAAnimationGroup animation];

    group.animations = @[ratate,positionKey];
    group.duration = 8.0f;
    group.removedOnCompletion = NO;
    group.beginTime = CACurrentMediaTime() + 2;
    
    [self.view.layer addAnimation:group forKey:@"group"];

（5）UIView封装的block动画

//block方式
    /*开始动画，UIView的动画方法执行完后动画会停留在重点位置，而不需要进行任何特殊处理
     duration:执行时间
     delay:延迟时间
     options:动画设置，例如自动恢复、匀速运动等
     completion:动画完成回调方法
     */
    
    //UIView封装的动画
    //(1)关键帧
    [UIView animateKeyframesWithDuration:8.0f delay:0 options:UIViewKeyframeAnimationOptionAutoreverse | UIViewKeyframeAnimationOptionRepeat animations:^{
        
        [UIView addKeyframeWithRelativeStartTime:0 relativeDuration:0.5 animations:^{
            
        }];
        
        [UIView addKeyframeWithRelativeStartTime:0.5 relativeDuration:0.25 animations:^{
            
        }];
        
        [UIView addKeyframeWithRelativeStartTime:0.75 relativeDuration:0.25 animations:^{
            
            
        }];
        
    } completion:^(BOOL finished) {
        
    }];
    
    
    /*创建弹性动画
     damping:阻尼，范围0-1，阻尼越接近于0，弹性效果越明显
     velocity:弹性复位的速度
     */
    [UIView animateWithDuration:5.0f delay:0 usingSpringWithDamping:0.1 initialSpringVelocity:1.0 options:UIViewAnimationOptionCurveLinear animations:^{
        
        //这里写执行的动画
        
    } completion:^(BOOL finished) {
        
        //动画完成后的操作
    }];
    
    
    //转场的block动画
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectZero];
    
    [UIView transitionWithView:imageView duration:4.0f options:UIViewAnimationOptionCurveLinear | UIViewAnimationTransitionFlipFromLeft animations:^{
        
        //动画内容
        
    } completion:^(BOOL finished) {
        
        //动画完成的操作
    }];