CFStringRef釋放帶來壞訪問時，它是零

ABMultiValueRef phonesRef = ABRecordCopyValue(person, kABPersonPhoneProperty); 
    for (int i=0; i < ABMultiValueGetCount(phonesRef); i++) 
    { 
     CFStringRef currentPhoneLabel = ABMultiValueCopyLabelAtIndex(phonesRef, i); 
     CFStringRef currentPhoneValue = ABMultiValueCopyValueAtIndex(phonesRef, i); 

     if (currentPhoneLabel != nil && currentPhoneValue != nil) 
     { 
      if (CFStringCompare(currentPhoneLabel, kABPersonPhoneMobileLabel, 0) == kCFCompareEqualTo) 
      { 
       [contactInfoDict setObject:(__bridge NSString *)currentPhoneValue forKey:@"workNumber"]; 
      } 

      if (CFStringCompare(currentPhoneLabel, kABHomeLabel, 0) == kCFCompareEqualTo) 
      { 
       [contactInfoDict setObject:(__bridge NSString *)currentPhoneValue forKey:@"homeNumber"]; 
      } 
     } 
     else if (currentPhoneValue != nil && currentPhoneLabel == nil) 
     { 
      [contactInfoDict setObject:(__bridge NSString *)currentPhoneValue forKey:@"workNumber"]; 
     } 

     CFRelease(currentPhoneLabel); 
     CFRelease(currentPhoneValue); 
    } 
    CFRelease(phonesRef);

這裏是我的導入聯繫人電話到我的iOS應用程序的代碼，但是當currentPhoneLabel是CFRelease（currentPhoneLabel）零xocde。我不知道爲什麼會發生。任何幫助將是非常可觀的。CFStringRef釋放帶來壞訪問時，它是零

感謝

來源

2015-12-24 Paras Gorasiya

我從下面計算器的答案是指其中約內存釋放，通過您的崩潰日誌，如果該標籤中沒有數據，它如何釋放內存？它應該是崩潰的權利？ http://stackoverflow.com/questions/17959760/do-i-need-to-manually-release-cfstringref –

你已經在代碼中的其他地方看守，所以你只需要在每次調用增加一個後衛CFRelease()還有：

if (currentPhoneLabel != NULL) 
    CFRelease(currentPhoneLabel); 
// etc.

來源

2015-12-24 10:56:05 trojanfoe

CFStringRef釋放帶來壞訪問時，它是零

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