CFStringRef潜在泄漏，同时从联系人获取电话号码

Question

我从地址簿中获取电话号码，因为我使用此代码。

- (IBAction)contacts { 


    ABPeoplePickerNavigationController *peoplePickerController = [[ABPeoplePickerNavigationController alloc] init]; 
    peoplePickerController.peoplePickerDelegate = self; 
    [self presentModalViewController:peoplePickerController animated:NO]; 
    [peoplePickerController release]; 

} 
- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker 
     shouldContinueAfterSelectingPerson:(ABRecordRef)person { 


    return YES; 
} 

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker 
    shouldContinueAfterSelectingPerson:(ABRecordRef)person 
          property:(ABPropertyID)property 
          identifier:(ABMultiValueIdentifier)identifier { 
if (property == kABPersonPhoneProperty) { 
    ABMultiValueRef phonenumbers = ABRecordCopyValue(person, property); 
    CFStringRef phonenumberselected = ABMultiValueCopyValueAtIndex(phonenumbers, identifier); 

    NSString *aNSString = (NSString *)phonenumberselected; 
    if ([share_toadd length] == 0) { 
     [share_toadd appendString:aNSString]; 
    } 
    else { 
     [share_toadd appendString:@","]; 
     [share_toadd appendString:aNSString]; 
    } 

    share_textfield.text = share_toadd; 
    // Return to the main view controller. 
    [ self dismissModalViewControllerAnimated:YES ]; 
    return NO; 

    [share_textfield release]; 
} 
return YES; 

}

，但我在CFStringRef

Potential leak of an object allocated on line 1126 

Call to function 'ABRecordCopyValue' returns a Core Foundation object with a +1 retain count (owning reference) 

Object allocated on line 1126 is no longer referenced after this point and has a retain count of +1 (object leaked) 

获得潜在的泄漏任何一个可以请帮助我。

我该如何解决它。

Answer 1

当您完成使用该对象时，应该调用CFRelease（phonenumbersselected）。