ios-获取通讯录 姓名和电话

#import "ViewController.h"
#import <ContactsUI/ContactsUI.h>
@interface ViewController ()<CNContactPickerDelegate>
{
    UIButton * btn;

}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    btn = [UIButton buttonWithType:UIButtonTypeCustom];
    [btn setTitle:@"通讯录" forState:UIControlStateNormal];
    btn.frame = CGRectMake(0, 100, 200, 200);
    btn.backgroundColor = [UIColor cyanColor];
    [btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(pressBtn) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btn];

}

-(void)pressBtn{

    //让用户给权限,没有的话会被拒的各位
    CNAuthorizationStatus status = [CNContactStore authorizationStatusForEntityType:CNEntityTypeContacts];
    if (status == CNAuthorizationStatusNotDetermined) {
        CNContactStore *store = [[CNContactStore alloc] init];
        [store requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) {
            if (error) {
                NSLog(@"weishouquan ");
            }else
            {
                NSLog(@"chenggong ");//用户给权限了
                CNContactPickerViewController * picker = [CNContactPickerViewController new];
                picker.delegate = self;
                picker.displayedPropertyKeys = @[CNContactPhoneNumbersKey];//只显示手机号
                [self presentViewController: picker  animated:YES completion:nil];
            }
        }];
    }

    if (status == CNAuthorizationStatusAuthorized) {//有权限时
        CNContactPickerViewController * picker = [CNContactPickerViewController new];
        picker.delegate = self;
        picker.displayedPropertyKeys = @[CNContactPhoneNumbersKey];
        [self presentViewController: picker  animated:YES completion:nil];
    }
    else{
        NSLog(@"您未开启通讯录权限,请前往设置中心开启");
    }
}

-(void)contactPicker:(CNContactPickerViewController *)picker didSelectContact:(CNContact *)contact{

    CNPhoneNumber * num = nil;
    NSString * string = nil;
    if (contact.phoneNumbers.count >0) {
        num = contact.phoneNumbers[0].value;
        string = [NSString stringWithFormat:@"%@%@%@",contact.familyName,contact.givenName,[num valueForKey:@"digits"]];
    }else{
        string = [NSString stringWithFormat:@"%@%@",contact.familyName,contact.givenName];

    }

    NSLog(@"%@",string);//2016-12-12 10:28:06.823028 通讯录[17274:5041432] 滴滴出行4001809660

    [btn setTitle:string forState:UIControlStateNormal];

}