轉換kABemailProperty到的NSString

Question

在我的地址簿的應用程序，當我取電子郵件ID的接觸，我等這樣的事情：

ABMultiValueRef 0x2994e0 with 1 value(s) 
0: null (0x3f5655e0) - xyz@gmail.com (0x2994b0) 

如何從獲得即字符串值僅

xyz@gmail.com 

以上結果？

感謝

Answer 1

// This is what you have currently (i.e. the multivalues) 
ABMultiValueRef emailValues = ABRecordCopyValue(person, kABPersonEmailProperty); 

// This is how you extract the first item from the multivalues: 
CFStringRef cfEmailAddress = ABMultiValueCopyValueAtIndex(emailValues, 0); 

// This is how you convert it to an NSString. 
NSString *emailAddress = CFBridgingRelease(cfEmailAddress);