iPhone开发--警告Receiver 'ClassName' is a forward class and corresponding @interface may not exist
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今天上午重构代码的时候出现了如下的警告：
Receiver 'ClassName' is a forward class and corresponding @interface may not exist
查看代码，也并无错误啊，编译结果也正常，思考无果，只好求救网络，在stackoverflow上找到了答案：原因可能是你在.h文件中包含@classs yourclass.h，但是你并未在yourclass.m文件中包含#import "yourclass.h"
英文为：Maybe you have
@class UIPickerTable in your .h file and you did not have #import UIPickerTable.h on your {RootViewController}.m file呵呵，原因竟是我没包含头文件，呵呵，真是大意。编译器太“智能”了，直接编译成功，运行正常，但是提示的警告令人费解，有时我真希望编译器能准确提示错误在哪，而不是自动给我纠错，让我错的稀里糊涂。
摘录自：http://stackoverflow.com/questions/620661/receiver-classname-is-a-forward-class-and-corresponding-interface-may-not-exi
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