动画,就像从iPhone照片库中删除一样

Question

我尝试实现动画:当你进入iPhone图库时,按下图像,你会看到全屏图像.下面你可以看到带有垃圾按钮的工具栏.按此按钮时,图像将被动画删除.我试着实现这个,但我不知道,如何实现图像的转换,苹果的使用.这是最好的,我能做到:

[UIView transitionWithView:self.view duration:0.1 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
        [self.view addSubview:scrollImageView];
    } completion:^(BOOL finished) {
        [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionAllowUserInteraction animations:^{
            CGRect frame = scrollImageView.frame;
            frame.size = CGSizeMake(frame.size.width * 0.75, frame.size.height * 0.75);
            frame.origin = CGPointMake((size.width - frame.size.width) / 2, (size.height - frame.size.height) / 2);
            scrollImageView.frame = frame;
        } completion:^(BOOL finished) {
            [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionAllowUserInteraction animations:^{
                CGRect frame = scrollImageView.frame;
                frame.size = CGSizeMake(frame.size.width * 0.05, frame.size.height * 0.05);
                frame.origin = CGPointMake(size.width, size.height);
                scrollImageView.frame = frame;
                CGAffineTransform transform = scrollImageView.transform;
                CGAffineTransform rotatedTransform = CGAffineTransformRotate(transform, 45 * 3.14 / 180);
                scrollImageView.transform = rotatedTransform;
            } completion:^(BOOL finished) {
                [scrollImageView removeFromSuperview];
            }];
        }];
    }];

先感谢您.

更新 据我所知,我无法使用Core-Animation制作这个动画,但是任何人都可以向我推荐与iPhone Gallery动画最相似的动画,但不使用OpenGL？

Answer 1

您可以对此动画使用以下示例:

UIView *senderView = (UIView*)sender;

CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"transform"];
            anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
            anim.duration = 0.125;
            anim.repeatCount = 1;
            anim.autoreverses = YES;
            anim.removedOnCompletion = YES;
            anim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(1.2, 1.2, 1.0)];
            //[senderView.layer addAnimation:anim forKey:nil];


UIBezierPath *movePath = [UIBezierPath bezierPath];
            [movePath moveToPoint:icon.center];
            [movePath addQuadCurveToPoint:senderView.center
                             controlPoint:CGPointMake(senderView.center.x, icon.center.y)];

            CAKeyframeAnimation *moveAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"];
            moveAnim.path = movePath.CGPath;
            moveAnim.removedOnCompletion = YES;

            CABasicAnimation *scaleAnim = [CABasicAnimation animationWithKeyPath:@"transform"];
            scaleAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];
            scaleAnim.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.1, 0.1, 1.0)];
            scaleAnim.removedOnCompletion = YES;

            CABasicAnimation *opacityAnim = [CABasicAnimation animationWithKeyPath:@"alpha"];
            opacityAnim.fromValue = [NSNumber numberWithFloat:1.0];
            opacityAnim.toValue = [NSNumber numberWithFloat:0.1];
            opacityAnim.removedOnCompletion = YES;

            CAAnimationGroup *animGroup = [CAAnimationGroup animation];
            animGroup.animations = [NSArray arrayWithObjects:moveAnim, scaleAnim, opacityAnim, nil];
            animGroup.duration = 0.5;
            [icon.layer addAnimation:animGroup forKey:nil];

我已经修改了代码,您必须执行以下在它的变化,设置发件人视图self.view,并更改动画的结束点(这是目前senderView.center)根据您的要求

Answer 2

此时，您所讨论的确切动画无法使用 Core Animation 或 UIKit 来完成。您需要使用 OpenGL 并将图像应用为纹理并在其中制作动画。