objective-c - NSURLConnection sendSynchronousRequest 不阻塞

Question

我正在调用NSURLConnection-sendSynchronousRequest在 NSOperation 中，但该方法立即返回。我希望它会阻止操作，直到收到所有数据。这是我的误解吗？

Answer 1

将 NSURLConnection 对象的委托设置为 self

NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

然后实现connectionDidFinishLoading方法e

-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
//your code
}