XCode6里, 新建工程默认是没有pch文件的,苹果取消pch文件这一点肯定有它的道理,刚开始很多人可能不适应,如果我们想使用pch文件,需要手动添加,添加步骤如下:(依旧直接上图) @ 取消的原因: Stackoverflow上有一个人对此的解释是这样的: I suspect because of modules, which remove the need for the #import <Cocoa/Cocoa.h>. As to where to put c
ItcastWeibo-Prefix.pch //// Prefix header//// The contents of this file are implicitly included at the beginning of every source file.// #import <Availability.h> #ifndef __IPHONE_5_0#warning "This project uses features only available in iOS S