ios - iOS 中的 NSURLErrorCancelled = -999 是什么？

Question

谁能描述一下“NSURLErrorCancelled = -999”是如何使用的。

Answer 1

来自 Apple 文档:

NSURLErrorCancelled (-999)

"Returned when an asynchronous load is canceled. A Web Kit framework delegate will receive this error when it performs a cancel operation on a loading resource. Note that an NSURLConnection or NSURLDownload delegate will not receive this error if the download is canceled."

你能做的最好的事情就是忽略这个错误

if ([error code] != NSURLErrorCancelled) {
   //here you'll get a real error 
}