swift2 - I got Marquee Label error in UICollectionViewCell

Question

I got this error when i scrolls fast Left to Right or Right to Left.

" Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFType doubleValue]: unrecognized selector sent to instance 0x13cf0d300"

I have implemented the code. given below image.

Answer 1

你确定你completionHandler在主队列中被调用吗？如果没有，请尝试将代码包装completionHandler在

dispatch_async(dispatch_get_main_queue()) {
    if thumbnailsURL == url {
        // Your animation code
    }
}