Question

怎么取消一个NSURLConnection 的异步请求？

当用户输入的时候我要实现个到web service的验证，用的是[NSURLConnection sendAsynchronousRequest]，但是想，如果用户修改了输入的内容的话，就即时取消这个月异步请求，这个取消怎么做？

Answer 1

cancelCancels an asynchronous load of a request.- (void)cancelDiscussionAfter this method is called, the connection’s delegate no longer receives any messages for the connection. If you want to reattempt the connection, you should create a new connection object.