iPhone中分配的对象的潜在泄漏

当我分析我的项目下面的代码给我泄漏警告。 有什么办法来解决我的内存泄漏问题？

警告 ：

Potential leak of an object allocated on line 38 and stored into 'addressBook' 

贝娄是我的代码。

 - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; m_tableDataArray = [[[NSMutableArray alloc] init]autorelease]; NSMutableArray *listDate = [[[NSMutableArray alloc] init]autorelease]; ABAddressBookRef addressBook = ABAddressBookCreate(); NSArray *addresses = (NSArray *) ABAddressBookCopyArrayOfAllPeople(addressBook); NSInteger addressesCount = [addresses count]; for (int i = 0; i < addressesCount; i++) { ABRecordRef record = [addresses objectAtIndex:i]; NSString *firstName = (NSString *)ABRecordCopyValue(record, kABPersonFirstNameProperty); NSString *lastName = (NSString *)ABRecordCopyValue(record, kABPersonLastNameProperty); if(firstName != nil && lastName != nil){ NSString *contactFirstLast = [NSString stringWithFormat: @"%@ %@", firstName, lastName]; [listDate addObject:contactFirstLast]; } [firstName release]; [lastName release]; } m_tableDataArray = [[NSArray arrayWithArray:listDate] retain]; [addresses release]; addresses = nil; [m_mainTable reloadData]; } 

谢谢你…

Answer 1

一旦你完成使用addressBook你需要释放它使用：

 CFRelease(addressBook); 

这可能应该放在viewWillAppear:方法的末尾。

更新： viewWillAppear:的版本中有一些不必要的数组和步骤viewWillAppear: 我已经清理了一下，并修复了潜在的内存泄漏。

注意：我没有真正运行这个，所以仔细检查它是否正常工作。

 - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; // I assume m_tableDataArray is an instance variable. If so, if the // view appears multiple times it will result in a leak unless we // release pre-existing instances first. [m_tableDataArray release], m_tableDataArray = nil; m_tableDataArray = [[NSMutableArray alloc] init]; ABAddressBookRef addressBook = ABAddressBookCreate(); NSArray *addresses = (NSArray *)ABAddressBookCopyArrayOfAllPeople(addressBook); for (ABRecordRef record in addresses) { NSString *firstName = (NSString *)ABRecordCopyValue(record, kABPersonFirstNameProperty); NSString *lastName = (NSString *)ABRecordCopyValue(record, kABPersonLastNameProperty); if(firstName != nil && lastName != nil){ NSString *contactFirstLast = [NSString stringWithFormat: @"%@ %@", firstName, lastName]; [m_tableDataArray addObject:contactFirstLast]; } [firstName release]; [lastName release]; } [addresses release], addresses = nil; CFRelease(addressBook); [m_mainTable reloadData]; }