iOS：card.io使用，ioscard.io使用

iOS：card.io使用，ioscard.io使用

最近項目要用到一個功能：通過掃描銀行卡，擷取銀行卡號，在網上搜過後，選用了card.io這個SDK，過程如下：
（1）下載Card.io
Card.io是讓手機網路攝影機擷取信用卡的資訊，中間利用了OCR（光學字元辨識）的掃描技術返回結果，它還推出了SDK（軟體開發包），讓開發人員們可以把card.io添加到自己的應用當中。可以在https://github.com/paypal/PayPal-iOS-SDK下載最新的SDK或者直接下載我的下載好的：http://download.csdn.net/detail/u012890196/8658627
（2）添加到項目裡
1、將下載的SDK包裡名為CardIO的檔案拖到工程裡，在TARGETS-Build Phases - Link Binary With Librarys添加下面依賴庫
* AudioToolbox
* AVFoundation
* CoreGraphics
* CoreMedia
* CoreVideo
* Foundation
* MobileCoreServices
* OpenGLES
* QuartzCore
* Security
* UIKit
如果是xcode5或者更新的版本，只需要添加下面的庫
* AVFoundation
* AudioToolbox
* CoreMedia
* MobileCoreServices
並且保證Build Settings裡面這兩項都是YES：
* Enable Modules (C and Objective-C)
*Link Frameworks Automatically

2、在TARGETS-Build Settings添加 -lc++到Other Linker Flags

（3）使用
我是把它作為一個viewController類使用
代碼：
匯入

#import "CardIO.h"#import "CardIOPaymentViewControllerDelegate.h"- (void)viewWillAppear:(BOOL)animated {  [super viewWillAppear:animated];  [CardIOUtilities preload];}//開始掃描- (IBAction)scanCard:(id)sender {  CardIOPaymentViewController *scanViewController = [[CardIOPaymentViewController alloc] initWithPaymentDelegate:self];  [self presentViewController:scanViewController animated:YES completion:nil];}下面是代理方法//取消掃描- (void)userDidCancelPaymentViewController:(CardIOPaymentViewController *)scanViewController {  NSLog(@"User canceled payment info");  // Handle user cancellation here...  [scanViewController dismissViewControllerAnimated:YES completion:nil];}//掃描完成-(void)userDidProvideCreditCardInfo:(CardIOCreditCardInfo *)info inPaymentViewController:(CardIOPaymentViewController *)scanViewController {  //掃描結果//CardIOCreditCardInfo *info裡麵包含了銀行卡的一些資訊，如info.cardNumber是掃描的銀行卡號，現實的是完整號碼，而info.redactedCardNumber只顯示銀行卡後四位，前面的用*代替了，返回的銀行卡號都沒有空格可以用下面注釋的方法來加空格//    NSString *strTem = [info.cardNumber stringByReplacingOccurrencesOfString:@" " withString:@""];//    NSString *strTem2 = @"";//    if (strTem.length % 4 == 0)//    {//        int count = strTem.length / 4;//        for (int i = 0; i < count; i++)//        {//            NSString *str = [strTem substringWithRange:NSMakeRange(i * 4, 4)];//            strTem2 = [strTem2 stringByAppendingString:[NSString stringWithFormat:@"%@ ", str]];//        }//    }//    else//    {//        int count = strTem.length / 4;//        for (int j = 0; j <= count; j++)//        {//            if (j == count)//            {//                NSString *str = [strTem substringWithRange:NSMakeRange(j * 4, strTem.length % 4)];//                strTem2 = [strTem2 stringByAppendingString:[NSString stringWithFormat:@"%@ ", str]];//            }//            else//            {//                NSString *str = [strTem substringWithRange:NSMakeRange(j * 4, 4)];//                strTem2 = [strTem2 stringByAppendingString:[NSString stringWithFormat:@"%@ ", str]];//            }//        }//    }  NSLog(@"Received card info. Number: %@, expiry: %02i/%i, cvv: %@.", info.redactedCardNumber, info.expiryMonth, info.expiryYear, info.cvv);  // Use the card info...  [scanViewController dismissViewControllerAnimated:YES completion:nil];}