我没有iOS和Swift的经验,但已经获得了一个利用NSURLConnection.sendSynchronousRequest
向网络服务发送JSON请求的项目。我知道同步请求是阻塞请求,但无论如何我可以取消所述请求吗?
例如,用户按下按钮并取消请求?
答案 0 :(得分:0)
您可以将请求包装到NSOpertations中,并将您的操作添加到NSOperationsQueue中。
在NSOperations上,您可以随时致电取消。
有关nsoperations和队列的更多信息: http://www.raywenderlich.com/19788/how-to-use-nsoperations-and-nsoperationqueues
答案 1 :(得分:-2)
只需使用取消() swift func:
Apple Documentation - NSURLConnection.cancel()
Cancels an asynchronous load of a request.
Declaration
SWIFT
func cancel()
OBJECTIVE-C
- (void)cancel
Discussion
After this method is called, the connection makes no further delegate method calls. If you want to reattempt the connection, you should create a new connection object.
Availability
Available in OS X v10.2 and later.