Ios 调用函数'；ABRecordCopyValue'；返回带有+；1保留计数

我的项目中有以下代码

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

    [popContactsForm dismissPopoverAnimated:YES];

    [ssemailvc setName: (NSString *)ABRecordCopyValue(person,kABPersonFirstNameProperty)];        
    ABMultiValueRef emails = (NSString *)ABRecordCopyValue(person,kABPersonEmailProperty);


    if (ABMultiValueGetCount(emails)>0) {
        [ssemailvc setEmail:(NSString *)ABMultiValueCopyValueAtIndex(emails,0)];
    }else [ssemailvc setEmail:@""];

    CFRelease(emails);


    [peoplePicker dismissModalViewControllerAnimated:YES];      
    [popEmailForm setPopoverContentSize:CGSizeMake(350.0, 225.0)];

    return NO;
}

我收到了以下警告

1.调用函数“ABRecordCopyValue”返回一个具有+1保留计数的corefoundation对象 2.object泄漏：分配的对象在执行的后期未被引用，其保留计数为+1

---

请告诉我如何克服此问题

如果使用ARC，您可以使用桥接器：

CFStringRef name = (CFStringRef)ABRecordCopyValue(person,kABPersonFirstNameProperty);
[ssemailvc setName:(__bridge NSString*)name];
CFRelease(name);

或过桥：

NSString * name = (__bridge_transfer NSString *)ABRecordCopyValue(person,kABPersonFirstNameProperty);
[ssemailvc setName:name];

---

如果您正在使用MRC：

CFStringRef name = (CFStringRef)ABRecordCopyValue(person,kABPersonFirstNameProperty);
[ssemailvc setName:(NSString*)name];
CFRelease(name);

---

您看到此警告的原因是

ABRecordCopyValue

返回一个

CFStringRef

，其中

+1个retain count

试一试

---

不。我没有使用ARC。您是否尝试过下面发布的两个答案中的任何一个？我已将代码转换为ARC:[ssemailvc setName:（uuu bridge NSString*）ABRecordCopyValue（person，kabbersonfirstnameproperty）]；ABMultiValueRef emails=（u桥ABMultiValueRef）（u桥NSString*）ABRecordCopyValue（person，kABPersonEmailProperty））；如果（ABMultiValueGetCount（emails）>0）{[ssemailvc setEmail:（\uu桥NSString*）ABMultiValueCopyValueAtIndex（emails，0）]；}其他[ssemailvc setEmail:@''；发布（电子邮件）；但它仍然显示出同样的问题1。你应该接受贾斯汀的回答。2.对于通过

ABMultiValueCopyValueAtIndex

检索的电子邮件，您也应该重复

CFRelease

过程。3.您向

NSString*

发送的

电子邮件的类型转换不正确，您应该删除该类型转换。
- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker
  shouldContinueAfterSelectingPerson:(ABRecordRef)person {

[popContactsForm dismissPopoverAnimated:YES];

CFStringRef strLname = ABRecordCopyValue(person, kABPersonLastNameProperty);
[ssemailvc setName: (NSString *) strLname];  

if(strLname){
CFRelease(strLname);
}

ABMultiValueRef emails = (NSString *)ABRecordCopyValue(person,kABPersonEmailProperty);


if (ABMultiValueGetCount(emails)>0) {
    [ssemailvc setEmail:(NSString *)ABMultiValueCopyValueAtIndex(emails,0)];
}else [ssemailvc setEmail:@""];

if(emails){
CFRelease(emails);
}

[peoplePicker dismissModalViewControllerAnimated:YES];      
[popEmailForm setPopoverContentSize:CGSizeMake(350.0, 225.0)];

return NO;
}