iOS Undefined symbols for architecture arm64解決辦法

Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$_YYCache", referenced from:
      objc-class-ref in LFNetworking.o
  "_OBJC_CLASS_$_AFHTTPRequestSerializer", referenced from:
      objc-class-ref in LFNetworking.o
  "_OBJC_CLASS_$_AFJSONResponseSerializer", referenced from:
      objc-class-ref in LFNetworking.o
  "_OBJC_CLASS_$_AFHTTPSessionManager", referenced from:
      objc-class-ref in LFNetworking.o
ld: symbol(s) not found for architecture arm64

 

出現這種錯誤有多種可能：

1.Build Setting->Architectures查看是否包含arm64指令集

2.若是用CocoaPods導入的庫，Build Setting->Linking->Other Linker Flags，添加$(inherited)

3.該類只有@interface，沒有@implementation

 

暫時列出這幾種，之後遇到了再補充