动画-缩放,旋转 CGAffineTransform

CGAffineTransform transform; // = CGAffineTransformScale(flyImoji.transform, 8, 8);
    transform = CGAffineTransformMakeRotation(90);
        [UIView animateWithDuration:1 animations:^{
            flyImoji.transform = transform;
            flyImoji.frame = endFrame;
            flyImoji.alpha = endAlpha;
        } completion:^(BOOL finished) {
            [flyImoji removeFromSuperview];
        }];
https://github.com/yixiangboy/IOSAnimationDemo