之前的第一篇文章中介绍了AddressBookUI这个框架，这一篇文章再来看一下AddressBook这个框架，这个框架和前者相比不带UI，也就是我们可以从这个框架中获取到联系人相关数据，然后根据数据自定义UI界面。
使用这个框架的话要进行授权。在AppDelegate中药执行以下代码：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    //要想访问通讯录，iOS10之后要在info.plist加上如下字段
//    <key>NSContactsUsageDescription</key>
//    <string>是否可以访问通讯录</string>
    
    //针对AddressBook这个框架，自iOS6开始，必选授权才能上架，否则不能上架
    //获取授权状态
    /*
     kABAuthorizationStatusNotDetermined = 0, 用户未选择
     kABAuthorizationStatusRestricted,         一些许可配置阻止了通讯录的交互kABAuthorizationStatusDenied,                用户拒绝kABAuthorizationStatusAuthorized  用户授权
     */
    //1.获取授权状态
    ABAuthorizationStatus state = ABAddressBookGetAuthorizationStatus();
    //2.创建 AddressBook
    ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, NULL);
    //3.没有授权时才去授权
    if (state == kABAuthorizationStatusNotDetermined ) {
        //请求授权
        ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
            //3.1 判断是否出错
            if (error) {
                return ;
            }
            //3.2 判断是否授权
            if (granted) {
                NSLog(@"已经授权");
            }else{
                NSLog(@"没有授权");
            }
        });
    }
    //4.释放CF对象
    CFRelease(addressBook);
    return YES;
}

接下来看如何获取联系人相关数据，和第一篇文章中的部分代码很类似，代码中好友注释。

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    //点击屏幕 获取所有联系人信息
    //1.判断是否授权成功，授权成功才能获取数据
    if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusAuthorized) {
        //2.创建通讯录
        ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, NULL);
        //3.联系人  --->Array
        CFArrayRef persons = ABAddressBookCopyArrayOfAllPeople(addressBook);
        //4.获取联系人个数
        CFIndex count = CFArrayGetCount(persons);
        //遍历联系人
        for (CFIndex i = 0; i < count; i++) {
            //5.获取单个联系人数据
            ABRecordRef person = CFArrayGetValueAtIndex(persons, i);
            //6.获取姓名
            NSString *lastName = CFBridgingRelease(ABRecordCopyValue(person, kABPersonLastNameProperty));
            NSString *firstName = CFBridgingRelease(ABRecordCopyValue(person, kABPersonFirstNameProperty));
            NSLog(@"姓：%@   名：%@",lastName,firstName);
            
            //7.获取电话
            ABMultiValueRef phones = ABRecordCopyValue(person, kABPersonPhoneProperty);
            //7.1 获取电话个数  phones.count不可以获取个数
            CFIndex count = ABMultiValueGetCount(phones);
            //7.2 遍历联系人
            for (CFIndex i = 0 ; i < count; i++) {
                //7.3 获取联系电话的标签
                //两种写法
                NSString *label = (__bridge_transfer NSString *)ABMultiValueCopyLabelAtIndex(phones, i);
                //NSString *label = CFBridgingRelease(ABMultiValueCopyLabelAtIndex(phones, i));
                NSLog(@"电话标签：%@",label);//_$!<Home>!$_
                
                //7.4 获取联系人电话
                NSString *value =(__bridge_transfer NSString *)ABMultiValueCopyValueAtIndex(phones, i);
                NSLog(@"电话号码:%@",value);
            }
            NSLog(@"\n\n");
            //8.释放CF对象
            CFRelease(phones);
        }
        //8.释放CF对象
        CFRelease(persons);
        CFRelease(addressBook);
    }else{
        NSLog(@"请前往设置中更改权限");
    }
}