我遇到ABAddressBookGetPersonCount返回-1的情况.测试人员向我保证地址簿中存在联系人.所有手机都运行iOS 6.0.1.
这是代码：
NSMutableDictionary *myAddressBook = [[NSMutableDictionary alloc] init];
ABAddressBookRef addressBook = ABAddressBookCreate();
CFArrayRef people = ABAddressBookCopyArrayOfAllPeople(addressBook);
int numEntries = ABAddressBookGetPersonCount(addressBook);
if (numEntries == 0)
{
NSString *title = NSLocalizedString(@"error",nil);
NSString *description = NSLocalizedString(@"error_empty_contacts",nil);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message:description
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
return;
}
NSLog(@"emails: found %d",numEntries);
我无法在我的任何手机上重现这一点,但测试人员尝试过3部手机.它适用于iPhone 5,但不适用于4或3;
我找不到任何表明值为-1的文档.我假设它是某种错误,但是什么？
解决方法
在iOS 6下,此代码无效.您必须验证您的应用是否有权访问通讯录.最有可能的是,-1表示应用程序在这些设备上没有权限(或未知权限状态).
从ABAddressBookRequestAccessCompletionHandler的文档中：
CFErrorRef myError = NULL;
ABAddressBookRef myAddressBook = ABAddressBookCreateWithOptions(NULL,&myError);
APLViewController * __weak weakSelf = self; // avoid capturing self in the block
ABAddressBookRequestAccessWithCompletion(myAddressBook,^(bool granted,CFErrorRef error) {
if (granted) {
NSArray *theSmiths = CFBridgingRelease(
ABAddressBookCopyPeopleWithName(myAddressBook,CFSTR("Smith")
)
);
weakSelf.numberOfSmiths = [theSmiths count];
} else {
// Handle the error
}
});
CFRelease(myAddressBook);
