下载地址：https://github.com/AllLuckly/card.io-iOS-SDK

首先是把框架整个拉进自己的工程，然后在
TARGETS---Build Phases---Link Binary With Libraries
里边分别加入下面这几个框架
Accelerate.framework
MobileCoreServices.framework
CoreMedia.framework
AudioToolbox.framework
AVFoundation.framework
再在TARGETS---Build Settings---Other Linker Flags中添加-ObjC和-lc++

然后在我们需要调用的VC中导入头文件#import "CardIO.h"和#import "CardIOPaymentViewControllerDelegate.h"
加上代理CardIOPaymentViewControllerDelegate

代码实现：

//
//  ViewController.m
//  扫描银行卡识别卡号
//
//  Created by 张士玉 on 16/7/13.
//  Copyright © 2016年 张士玉. All rights reserved.
//#import "ViewController.h"
#import "CardIO.h"
#import "CardIOPaymentViewControllerDelegate.h"@interface ViewController ()<CardIOPaymentViewControllerDelegate>@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.[CardIOUtilities preload];
}//开始调用扫描
- (IBAction)begin:(id)sender {CardIOPaymentViewController *scanViewController = [[CardIOPaymentViewController alloc] initWithPaymentDelegate:self];[self presentViewController:scanViewController animated:YES completion:nil];
}//取消扫描
- (void)userDidCancelPaymentViewController:(CardIOPaymentViewController *)paymentViewController {[paymentViewController dismissViewControllerAnimated:YES completion:nil];
}//扫描完成
- (void)userDidProvideCreditCardInfo:(CardIOCreditCardInfo *)cardInfo inPaymentViewController:(CardIOPaymentViewController *)paymentViewController {//扫描结果NSLog(@"Received card info. Number: %@, expiry: %02lu/%lu, cvv: %@.", cardInfo.redactedCardNumber, (unsigned long)cardInfo.expiryMonth, (unsigned long)cardInfo.expiryYear, cardInfo.cvv);NSString *no = cardInfo.cardNumber;NSLog(@"%@", no);[paymentViewController dismissViewControllerAnimated:YES completion:nil];}- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated.
}@end