ios開發問題：添加庫和複製其它工程檔案編譯錯誤問題

首先添加庫問題：

選擇頁簽Build Phases->Link Binary With Libraries點+添加庫

然後command+shift+k清除曆史debug的垃圾

複製其它工程檔案編譯錯誤問題:

當拷貝檔案到工程裡的時候，若不注意勾選"Add to Target"，運行時會報如下類似的錯誤:Undefined symbols for architecture i386: "_OBJC_CLASS_$_SKPSMTPMessage", referenced from:  objc-class-ref in ConfirmController.o "_kSKPSMTPPartContentTransferEncodingKey", referenced from:  -[ConfirmController sendEmail] in ConfirmController.o "_kSKPSMTPPartMessageKey", referenced from:  -[ConfirmController sendEmail] in ConfirmController.o "_kSKPSMTPPartContentTypeKey", referenced from:  -[ConfirmController sendEmail] in ConfirmController.o ld: symbol(s) not found for architecture i386  解決方案：先點擊方案（左邊列表，點擊方案的圖示）選擇target選擇頁簽Build PhasesCompile Source如果沒展開的話先展開向下找加號，點擊加號，將這個target需要的.m檔案的標頭檔都加入吧（如果只有一個 就把左右的.h檔案都加入）這樣就應該可以了