Question

NSHost *h = [NSHost hostWithName:name];

Im getting two errors from this line of code

ARC Issue: Receiver  NSHost  for class message is a forward declaration. 
ARC Issue: No known class message for selector  hostWithName:

围绕这一点,我发现,前述声明错误通常是因为没有列入某些框架。然而,这一局面是令人厌恶的,因为国家安全局是基金会框架的一部分,由我的头盔进口。是的,我的执行进口了我的头盔。

An opt+click on NSHost says that NSHost is declared in NSStream.h, not NSHost.h. The NSStream header file only declares @class NSHost.

Product => Clean doesn t solve anything either. I m pretty confused as to what the issue is here :(

EDIT: I think the problem is that NSHost is not available for iOS :-/

Answer 1

你应该import在你档案的顶端(或者在你的共同档案中)。

Or, if you really really want to go the manual route, #import (assuming that file exists).