使用ARC的peoplePicker内存泄漏

Question

我在我的项目中使用了ARC，并在以下内容中收到了潜在内存泄漏的警告(参见注释行)。不知道该怎么处理。

-( BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker 
  shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier{

ABMultiValueRef phoneProperty = ABRecordCopyValue(person,property);
  // Call to function 'ABRecordCopyValue' returns a Core Foundation object with a +1 retain count

int idx = ABMultiValueGetIndexForIdentifier (phoneProperty, identifier);    

emailToValue= (__bridge_transfer NSString *)ABMultiValueCopyValueAtIndex(phoneProperty,idx);
  // Object Leaked: object allocated and stored into 'phoneProperty' is not referenced   later in this execution path and has a retain count of +1

任何建议都将不胜感激。

提前谢谢。

Answer 1

ARC只管理Objective-C对象的内存，因此您的应用需要使用CFRelease释放ABRecordCopyValue返回的phoneProperty (方法中的Copy表示它已被保留)。

Answer 2

无论是否使用ARC，你们都必须自己处理CFMemory。在离开之前添加以下代码：

if (phoneProperty){
CFRelease(phoneProperty);
}