如何使用Apple Keychain？

Question

我正在尝试使用scifihifi-iphone (from Github)来存储和检索用户名和密码。但是，当我添加SFHFKeychainUtils类时，我得到以下错误：

  "_kSecAttrAccount", referenced from:
      _kSecAttrAccount$non_lazy_ptr in SFHFKeychainUtils.o
  "_SecItemDelete", referenced from:
      +[SFHFKeychainUtils deleteItemForUsername:andServiceName:error:] in SFHFKeychainUtils.o
  "_kSecReturnAttributes", referenced from:
      _kSecReturnAttributes$non_lazy_ptr in SFHFKeychainUtils.o
  "_kSecClass", referenced from:
      _kSecClass$non_lazy_ptr in SFHFKeychainUtils.o
  "_kSecClassGenericPassword", referenced from:
      _kSecClassGenericPassword$non_lazy_ptr in SFHFKeychainUtils.o
  "_SecItemAdd", referenced from:
      +[SFHFKeychainUtils storeUsername:andPassword:forServiceName:updateExisting:error:] in SFHFKeychainUtils.o
  "_kSecAttrLabel", referenced from:
      _kSecAttrLabel$non_lazy_ptr in SFHFKeychainUtils.o
  "_SecItemUpdate", referenced from:
      +[SFHFKeychainUtils storeUsername:andPassword:forServiceName:updateExisting:error:] in SFHFKeychainUtils.o
  "_kSecAttrService", referenced from:
      _kSecAttrService$non_lazy_ptr in SFHFKeychainUtils.o
  "_kSecReturnData", referenced from:
      _kSecReturnData$non_lazy_ptr in SFHFKeychainUtils.o
  "_SecItemCopyMatching", referenced from:
      +[SFHFKeychainUtils getPasswordForUsername:andServiceName:error:] in SFHFKeychainUtils.o
      +[SFHFKeychainUtils getPasswordForUsername:andServiceName:error:] in SFHFKeychainUtils.o
  "_kSecValueData", referenced from:
      _kSecValueData$non_lazy_ptr in SFHFKeychainUtils.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

我遗漏了什么？当我单击错误时，它不会将我带到代码中的任何位置。

Answer 1

添加Security.framework，然后重建。有时我发现我必须先构建干净，然后再重建。

要添加它，在Xcode中右键单击您的目标，然后添加->现有框架并选择(或导航)到Security.framework。