访问电话簿时的ios内存泄漏 [英] ios memory leak when accessing phone book
问题描述
- (NSArray *)getAllContacts{
CFErrorRef *error = nil;
ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, error);
__block BOOL accessGranted = NO;
if (ABAddressBookRequestAccessWithCompletion != NULL) { // we're on iOS 6
dispatch_semaphore_t sema = dispatch_semaphore_create(0);
ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
accessGranted = granted;
dispatch_semaphore_signal(sema);
});
dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
}
else { // we're on iOS 5 or older
accessGranted = YES;
}
if (accessGranted == YES) {
#ifdef DEBUG
NSLog(@"Fetching contact info ----> ");
#endif
ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, error);
ABRecordRef source = ABAddressBookCopyDefaultSource(addressBook);
CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBook, source, kABPersonSortByFirstName);
CFIndex nPeople = ABAddressBookGetPersonCount(addressBook);
NSMutableArray* items = [NSMutableArray arrayWithCapacity:nPeople];
for (int i = 0; i < nPeople; i++)
{
ContactsData *contacts = [ContactsData new];
ABRecordRef person = CFArrayGetValueAtIndex(allPeople, i);
//get First Name and Last Name
contacts.firstNames = (__bridge NSString*)ABRecordCopyValue(person, kABPersonFirstNameProperty);
contacts.lastNames = (__bridge NSString*)ABRecordCopyValue(person, kABPersonLastNameProperty);
if (!contacts.firstNames) {
contacts.firstNames = @"";
}
if (!contacts.lastNames) {
contacts.lastNames = @"";
}
// get contacts picture, if pic doesn't exists, show standart one
// NSData *imgData = (__bridge NSData *)ABPersonCopyImageData(person);
// contacts.image = [UIImage imageWithData:imgData];
// if (!contacts.image) {
// contacts.image = [UIImage imageNamed:@"NOIMG.png"];
// }
// //get Phone Numbers
//
// NSMutableArray *phoneNumbers = [[NSMutableArray alloc] init];
//
// ABMultiValueRef multiPhones = ABRecordCopyValue(person, kABPersonPhoneProperty);
// for(CFIndex i=0;i<ABMultiValueGetCount(multiPhones);i++) {
//
// CFStringRef phoneNumberRef = ABMultiValueCopyValueAtIndex(multiPhones, i);
// NSString *phoneNumber = (__bridge NSString *) phoneNumberRef;
// [phoneNumbers addObject:phoneNumber];
//
// //NSLog(@"All numbers %@", phoneNumbers);
//
// }
// [contacts setNumbers:phoneNumbers];
//get Contact email
NSMutableArray *contactEmails = [NSMutableArray new];
ABMultiValueRef multiEmails = ABRecordCopyValue(person, kABPersonEmailProperty);
for (CFIndex i=0; i<ABMultiValueGetCount(multiEmails); i++) {
CFStringRef contactEmailRef = ABMultiValueCopyValueAtIndex(multiEmails, i);
NSString *contactEmail = (__bridge NSString *)contactEmailRef;
[contactEmails addObject:contactEmail];
// NSLog(@"All emails are:%@", contactEmails);
}
[contacts setEmails:contactEmails];
//---- if no mail id found then dont add contact
if (contactEmails && contactEmails.count != 0) {
[items addObject:contacts];
}
#ifdef DEBUG
// NSLog(@"Person is: %@ # %@", contacts.firstNames,contacts.lastNames);
// NSLog(@"Phones are: %@", contacts.numbers);
// NSLog(@"Email is:%@", contacts.emails);
#endif
}
return items;
} else {
#ifdef DEBUG
NSLog(@"Cannot fetch Contacts :( ");
#endif
return nil;
}
}
崩溃日志: 8月6日19:11:08 iPad:获取联系信息---->
crash log: Aug 6 19:11:08 IPad : Fetching contact info ---->
8月6日19:11:08 IPad :(警告)[ABLog]:实际的默认来源不存在
Aug 6 19:11:08 IPad : (Warn ) [ABLog]: Actual default source doesn't exist
8月6日19:11:57 iPad com.apple.debugserver-310.2 [449]:得到了一个'k'数据包，杀死了劣等进程.
Aug 6 19:11:57 IPad com.apple.debugserver-310.2[449] : Got a 'k' packet, killing the inferior process.
8月6日19:11:57 iPad com.apple.debugserver-310.2 [449]:发送ptrace PT_KILL终止劣等进程.
Aug 6 19:11:57 IPad com.apple.debugserver-310.2[449] : Sending ptrace PT_KILL to terminate inferior process.
8月6日19:11:57 IPad com.apple.debugserver-310.2 [449]:38 +82.923904秒[01c1/060b]:错误::: ptrace(请求= PT_THUPDATE，pid = 0x01c2，tid = 0x2603，信号= 0)错误=资源繁忙(0x00000010)
Aug 6 19:11:57 IPad com.apple.debugserver-310.2[449] : 38 +82.923904 sec [01c1/060b]: error: ::ptrace (request = PT_THUPDATE, pid = 0x01c2, tid = 0x2603, signal = 0) err = Resource busy (0x00000010)
8月6日19:11:57 IPad com.apple.debugserver-310.2 [449]:39 +0.005248秒[01c1/060b]:错误::: task_info(target_task = 0x1c0b，flavor = TASK_BASIC_INFO，task_info_out => 0x27d93d48 ，task_info_outCnt => 8)err =(os/kern)无效参数(0x00000004)
Aug 6 19:11:57 IPad com.apple.debugserver-310.2[449] : 39 +0.005248 sec [01c1/060b]: error: ::task_info ( target_task = 0x1c0b, flavor = TASK_BASIC_INFO, task_info_out => 0x27d93d48, task_info_outCnt => 8 ) err = (os/kern) invalid argument (0x00000004)
8月6日19:11:57 IPad com.apple.launchd 1 ( UIKitApplication:com.baltech.gaurav [0x7f50] [450]):(UIKitApplication:com.baltech.gaurav [0x7f50])退出:被杀:9
Aug 6 19:11:57 IPad com.apple.launchd1 (UIKitApplication:com.baltech.gaurav[0x7f50][450]) : (UIKitApplication:com.baltech.gaurav[0x7f50]) Exited: Killed: 9
8月6日19:11:57 iPad com.apple.debugserver-310.2 [449]:等待20毫秒以获取进程的状态(状态=已退出)
Aug 6 19:11:57 IPad com.apple.debugserver-310.2[449] : Waited 20 ms for process to be reaped (state = Exited)
8月6日19:11:57 IPad com.apple.debugserver-310.2 [449]:40 +0.025414秒[01c1/1207]:错误::: read(-1，0x4089ec，18446744069414585344)=> -1错误=错误的文件描述符(0x00000009)
Aug 6 19:11:57 IPad com.apple.debugserver-310.2[449] : 40 +0.025414 sec [01c1/1207]: error: ::read ( -1, 0x4089ec, 18446744069414585344 ) => -1 err = Bad file descriptor (0x00000009)
8月6日19:11:57 iPad com.apple.debugserver-310.2 [449]:正在退出.
Aug 6 19:11:57 IPad com.apple.debugserver-310.2[449] : Exiting.
8月6日19:11:57 IPad背板[28]:应用程序'UIKitApplication:com.baltech.gaurav [0x7f50]'异常退出，信号为9:杀死:9
Aug 6 19:11:57 IPad backboardd[28] : Application 'UIKitApplication:com.baltech.gaurav[0x7f50]' exited abnormally with signal 9: Killed: 9
- 预先感谢
推荐答案
用 __ bridge_transfer
contacts.firstNames = (__bridge_transfer NSString*)ABRecordCopyValue(person, kABPersonFirstNameProperty);
请参阅 Apple文档 :
__ bridge 或 CFRelease 在Objective-C和Core Foundation之间转移指针，而没有所有权转移.
__bridge or CFRelease transfers a pointer between Objective-C and Core Foundation with no transfer of ownership.
__ bridge_transfer 或 CFBridgingRelease 将非Objective-C指针移动到Objective-C，并将所有权转移到ARC. ARC负责放弃对象的所有权.
__bridge_transfer or CFBridgingRelease moves a non-Objective-C pointer to Objective-C and also transfers ownership to ARC. ARC is responsible for relinquishing ownership of the object.
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