iOS：ABPeoplePickerNavigationController系统通讯录使用

　　昨天因项目需求要访问系统通讯录获取电话号码，于是乎从一无所知，开始倒腾，倒腾了一下午，总算了弄好了。写这边博客是为了记录一下，自己下一次弄的时候就别在出错了。同时，有和我一样的菜鸟能够避免走一下弯路。

　　好了，言归正传，要访问系统的通讯录，首先需要添加AddressBook.framework和AddressBookUI.framework两个框架到你工程中build phase的"Link Binary With Libraries"之下，然后就可以开始了。

　　首先我们需要创建一个控制器：ViewController，在.h文件中导入头文件：<AddressBook/AddressBook.h>、 <AddressBookUI/AddressBookUI.h>，

#import <AddressBook/AddressBook.h>
#import <AddressBookUI/AddressBookUI.h>

然后在控制器实现ABPeoplePickerNavigationControllerDelegate, UINavigationControllerDelegate协议

@interface ViewController ()<ABPeoplePickerNavigationControllerDelegate, UINavigationControllerDelegate>

在viewDidAppear方法中创建ABPeoplePickerNavigationController，同时设置viewController作为委托对象

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    ABPeoplePickerNavigationController *pNC = [[ABPeoplePickerNavigationController alloc] init];
    pNC.peoplePickerDelegate = self;
    [self presentViewController:pNC animated:YES completion:nil];
}

接下来需要实现ABPeoplePickerNavigationControllerDelegate协议

#pragma mark - ABPeoplePickerNavigationControllerDelegate
- (void)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker didSelectPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier {

    ABMultiValueRef phone = ABRecordCopyValue(person, kABPersonPhoneProperty);

    long index = ABMultiValueGetIndexForIdentifier(phone,identifier);

    NSString *phoneNO = (__bridge NSString *)ABMultiValueCopyValueAtIndex(phone, index);
    phoneNO = [phoneNO stringByReplacingOccurrencesOfString:@"-" withString:@""];
    NSLog(@"%@", phoneNO);
    if (phone && phoneNO.length == 11) {

        [peoplePicker dismissViewControllerAnimated:YES completion:nil];
        return;
    }else{
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"错误提示" message:@"请选择正确手机号" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];
        [alertView show];
    }
}

- (void)peoplePickerNavigationController:(ABPeoplePickerNavigationController*)peoplePicker didSelectPerson:(ABRecordRef)person NS_AVAILABLE_IOS(8_0)
{
    ABPersonViewController *personViewController = [[ABPersonViewController alloc] init];
    personViewController.displayedPerson = person;

    [peoplePicker pushViewController:personViewController animated:YES];

}

- (void)peoplePickerNavigationControllerDidCancel:(ABPeoplePickerNavigationController *)peoplePicker
{
    [peoplePicker dismissViewControllerAnimated:YES completion:nil];
}

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person NS_DEPRECATED_IOS(2_0, 8_0)
{
    return YES;
}

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier NS_DEPRECATED_IOS(2_0, 8_0)
{
    ABMultiValueRef phone = ABRecordCopyValue(person, kABPersonPhoneProperty);

    long index = ABMultiValueGetIndexForIdentifier(phone,identifier);

    NSString *phoneNO = (__bridge NSString *)ABMultiValueCopyValueAtIndex(phone, index);
    phoneNO = [phoneNO stringByReplacingOccurrencesOfString:@"-" withString:@""];
    NSLog(@"%@", phoneNO);
    if (phone && phoneNO.length == 11) {

        [peoplePicker dismissViewControllerAnimated:YES completion:nil];
        return NO;
    }else{
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"错误提示" message:@"请选择正确手机号" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];
        [alertView show];
    }
    return YES;
}@end

到这里本以为大功告成，的确在iOS7是没有任何问题，但是iOS8出现了坑爹的问题，就是选择联系人后

ABPeoplePickerNavigationController会自动dismiss掉，这个问题可坑坏我了。问了谷歌和度娘，在stackvoerflow找到了类似的问题，但是都没有得到解决，在觉得没有办法的时候，又开始看ABPeoplePickerNavigationController.h的头文件，发现了

predicateForSelectionOfPerson属性，于是乎在viewDidAppear方法中加入如下代码：

 if([[UIDevice currentDevice].systemVersion floatValue] >= 8.0){
        pNC.predicateForSelectionOfPerson = [NSPredicate predicateWithValue:false];
    }

运行程序，大功告成。