应用调用系统新建联系人页面点击添加相片启动相机拍照相机预览界面为黑色不能拍照

//1.创建Contact对象，须是可变
CNMutableContact *contact = [[CNMutableContact alloc] init];

//2.为contact赋值
CNLabeledValue *phoneNumber = [CNLabeledValue labeledValueWithLabel:CNLabelPhoneNumberMobile value:[CNPhoneNumber phoneNumberWithStringValue:self.showNumView.inputNumberLabel.text]];
contact.phoneNumbers = @[phoneNumber];

//3.创建新建联系人页面
CNContactViewController *contactVC = [CNContactViewController viewControllerForNewContact:contact];

//代理内容根据自己需要实现
contactVC.delegate = self;

[self.navigationController pushViewController:contactVC animated:YES];