Apple Pay執行環境：iPhone6以上裝置，作業系統最低iOS9.0以上，部分資訊設定需要iOS9.2以上。目前還不支援企業證書新增。

環境搭建好後可以在模擬器上面執行，xcode7.2.1+iPhone6SP9.2系統下，系統會繫結幾種虛擬的銀行卡，和幾個聯絡人，方便除錯，支付也不會發生真實的付款，真的很方便。
[TCO]

準備工作

在接入Apple Pay之前，首先要申請MerchantID及對應證書。
請移步我寫的申請MerchantID及對應證書詳細圖文教程

工程設定

bundleID設定



Capability中啟用Apple Pay許可權，並選擇merchantID。



之後專案會多一個Applepay的配置檔案ApplePayYasin.entitlements



需要引用的庫

Xcode7.0以上不需要再手動新增需要引用的庫了，只需要匯入標頭檔案就可以了


#import <PassKit/PassKit.h>                                 //使用者繫結的銀行卡資訊
#import <PassKit/PKPaymentAuthorizationViewController.h>    //Apple pay的展示控制元件
#import <AddressBook/AddressBook.h>                         //使用者聯絡資訊相關

裝置Applepay許可權檢測

    if (![PKPaymentAuthorizationViewController class]) {
        //PKPaymentAuthorizationViewController需iOS8.0以上支援
        NSLog(@"作業系統不支援ApplePay，請升級至9.0以上版本，且iPhone6以上裝置才支援");
        return;
    }
    //檢查當前裝置是否可以支付
    if (![PKPaymentAuthorizationViewController canMakePayments]) {
        //支付需iOS9.0以上支援
        NSLog(@"裝置不支援ApplePay，請升級至9.0以上版本，且iPhone6以上裝置才支援");
        return;
    }
    //檢查使用者是否可進行某種卡的支付，是否支援Amex、MasterCard、Visa與銀聯四種卡，根據自己專案的需要進行檢測
    NSArray *supportedNetworks = @[PKPaymentNetworkAmex, PKPaymentNetworkMasterCard,PKPaymentNetworkVisa,PKPaymentNetworkChinaUnionPay];
    if (![PKPaymentAuthorizationViewController canMakePaymentsUsingNetworks:supportedNetworks]) {
        NSLog(@"沒有繫結支付卡");
        return;
    }

建立支付請求PKPaymentRequest

初始化PKPaymentRequest

這裡需要注意RMB的幣種程式碼是CNY

//設定幣種、國家碼及merchant識別符號等基本資訊
  PKPaymentRequest *payRequest = [[PKPaymentRequest alloc]init];
  payRequest.countryCode = @"CN";     //國家程式碼
  payRequest.currencyCode = @"CNY";       //RMB的幣種程式碼
  payRequest.merchantIdentifier = @"merchant.ApplePayDemoYasin";  //申請的merchantID
  payRequest.supportedNetworks = supportedNetworks;   //使用者可進行支付的銀行卡
  payRequest.merchantCapabilities = PKMerchantCapability3DS|PKMerchantCapabilityEMV;      //設定支援的交易處理協議，3DS必須支援，EMV為可選，目前國內的話還是使用兩者吧

設定發票配送資訊和貨物配送地址資訊,使用者設定後可以通過代理回撥代理獲取資訊的更新

//    payRequest.requiredBillingAddressFields = PKAddressFieldEmail;   
//如果需要郵寄賬單可以選擇進行設定，預設PKAddressFieldNone(不郵寄賬單)
//樓主感覺賬單郵寄地址可以事先讓使用者選擇是否需要，否則會增加客戶的輸入麻煩度，體驗不好，
  payRequest.requiredShippingAddressFields = PKAddressFieldPostalAddress|PKAddressFieldPhone|PKAddressFieldName;
  //送貨地址資訊，這裡設定需要地址和聯絡方式和姓名，如果需要進行設定，預設PKAddressFieldNone(沒有送貨地址)


送貨資訊頁面展示

設定貨物的配送方式，不需要不配置

//設定兩種配送方式
  PKShippingMethod *freeShipping = [PKShippingMethod summaryItemWithLabel:@"包郵" amount:[NSDecimalNumber zero]];
  freeShipping.identifier = @"freeshipping";
  freeShipping.detail = @"6-8 天 送達";

  PKShippingMethod *expressShipping = [PKShippingMethod summaryItemWithLabel:@"極速送達" amount:[NSDecimalNumber decimalNumberWithString:@"10.00"]];
  expressShipping.identifier = @"expressshipping";
  expressShipping.detail = @"2-3 小時 送達";

  payRequest.shippingMethods = @[freeShipping, expressShipping];





賬單資訊的設定

每條賬單的設定
賬單列表使用PKPaymentSummaryItem新增描述和價格，價格使用NSDecimalNumber。
PKPaymentSummaryItem初始化：
label為商品名字或者是描述，amount為商品價格，折扣為負數，type為該條賬單為最終價格還是估算價格(比如計程車價格預估)

+ (instancetype)summaryItemWithLabel:(NSString *)label amount:(NSDecimalNumber *)amount;
+ (instancetype)summaryItemWithLabel:(NSString *)label amount:(NSDecimalNumber *)amount type:(PKPaymentSummaryItemType)type NS_AVAILABLE(NA, 9_0);

NSDecimalNumber初始化：
NSDecimalNumber可以使用數字初始化，也可以使用字串。
使用方法請移步我寫的NSDecimalNumber--十進位制數
新增賬單列表：

NSDecimalNumber *subtotalAmount = [NSDecimalNumber decimalNumberWithMantissa:1275 exponent:-2 isNegative:NO];   //12.75
PKPaymentSummaryItem *subtotal = [PKPaymentSummaryItem summaryItemWithLabel:@"商品價格" amount:subtotalAmount];

NSDecimalNumber *discountAmount = [NSDecimalNumber decimalNumberWithString:@"-12.74"];      //-12.74
PKPaymentSummaryItem *discount = [PKPaymentSummaryItem summaryItemWithLabel:@"優惠折扣" amount:discountAmount];

NSDecimalNumber *methodsAmount = [NSDecimalNumber zero];
PKPaymentSummaryItem *methods = [PKPaymentSummaryItem summaryItemWithLabel:@"包郵" amount:methodsAmount];

NSDecimalNumber *totalAmount = [NSDecimalNumber zero];
totalAmount = [totalAmount decimalNumberByAdding:subtotalAmount];
totalAmount = [totalAmount decimalNumberByAdding:discountAmount];
totalAmount = [totalAmount decimalNumberByAdding:methodsAmount];
PKPaymentSummaryItem *total = [PKPaymentSummaryItem summaryItemWithLabel:@"Yasin" amount:totalAmount];  //最後這個是支付給誰。哈哈，快支付給我

summaryItems = [NSMutableArray arrayWithArray:@[subtotal, discount, methods, total]];
//summaryItems為賬單列表，型別是 NSMutableArray，這裡設定成成員變數，在後續的代理回撥中可以進行支付金額的調整。
payRequest.paymentSummaryItems = summaryItems;

顯示購物資訊並進行支付

//ApplePay控制元件
    PKPaymentAuthorizationViewController *view = [[PKPaymentAuthorizationViewController alloc]initWithPaymentRequest:payRequest];
    view.delegate = self;
    [self presentViewController:view animated:YES completion:nil];

PKPaymentAuthorizationViewControllerDelegate代理


這裡還有兩個類要介紹
PKPayment 支付成功資訊

PKPaymentToken *payToken = payment.token;
//支付憑據，發給服務端進行驗證支付是否真實有效
PKContact *billingContact = payment.billingContact;     //賬單資訊
PKContact *shippingContact = payment.shippingContact;   //送貨資訊
PKContact *shippingMethod = payment.shippingMethod;     //送貨方式

PKContact 聯絡人資訊

NSPersonNameComponents *name = contact.name;                //聯絡人姓名
CNPostalAddress *postalAddress = contact.postalAddress;     //聯絡人地址
NSString *emailAddress = contact.emailAddress;              //聯絡人郵箱
CNPhoneNumber *phoneNumber = contact.phoneNumber;           //聯絡人手機
NSString *supplementarySubLocality = contact.supplementarySubLocality;  //補充資訊，地址詳細描述，其他備註等等,iOS9.2及以上才有

代理說明

送貨地址回撥

-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
                didSelectShippingContact:(PKContact *)contact
                              completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<PKShippingMethod *> * _Nonnull, NSArray<PKPaymentSummaryItem *> * _Nonnull))completion{
  //contact送貨地址資訊，PKContact型別
  //送貨資訊選擇回撥，如果需要根據送貨地址調整送貨方式，比如普通地區包郵+極速配送，偏遠地區只有付費普通配送，進行支付金額重新計算，可以實現該代理，返回給系統：shippingMethods配送方式，summaryItems賬單列表，如果不支援該送貨資訊返回想要的PKPaymentAuthorizationStatus
  completion(PKPaymentAuthorizationStatusSuccess, shippingMethods, summaryItems);
}

送貨方式回撥

-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
                 didSelectShippingMethod:(PKShippingMethod *)shippingMethod
                              completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<PKPaymentSummaryItem *> * _Nonnull))completion{
  //配送方式回撥，如果需要根據不同的送貨方式進行支付金額的調整，比如包郵和付費加速配送，可以實現該代理
  PKShippingMethod *oldShippingMethod = [summaryItems objectAtIndex:2];
  PKPaymentSummaryItem *total = [summaryItems lastObject];
  total.amount = [total.amount decimalNumberBySubtracting:oldShippingMethod.amount];
-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
                 didSelectShippingMethod:(PKShippingMethod *)shippingMethod
                              completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<PKPaymentSummaryItem *> * _Nonnull))completion{
  //配送方式回撥，如果需要根據不同的送貨方式進行支付金額的調整，比如包郵和付費加速配送，可以實現該代理
  PKShippingMethod *oldShippingMethod = [summaryItems objectAtIndex:2];
  PKPaymentSummaryItem *total = [summaryItems lastObject];
  total.amount = [total.amount decimalNumberBySubtracting:oldShippingMethod.amount];
  total.amount = [total.amount decimalNumberByAdding:shippingMethod.amount];

  [summaryItems replaceObjectAtIndex:2 withObject:shippingMethod];
  [summaryItems replaceObjectAtIndex:3 withObject:total];

  completion(PKPaymentAuthorizationStatusSuccess, summaryItems);
}  total.amount = [total.amount decimalNumberByAdding:shippingMethod.amount];

  [summaryItems replaceObjectAtIndex:2 withObject:shippingMethod];
  [summaryItems replaceObjectAtIndex:3 withObject:total];

  completion(PKPaymentAuthorizationStatusSuccess, summaryItems);
}

支付卡選擇回撥

-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller didSelectPaymentMethod:(PKPaymentMethod *)paymentMethod completion:(void (^)(NSArray<PKPaymentSummaryItem *> * _Nonnull))completion{
  //支付銀行卡回撥，如果需要根據不同的銀行調整付費金額，可以實現該代理
  completion(summaryItems);
}

送貨地址回撥，已棄用

-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller didSelectShippingAddress:(ABRecordRef)address completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<PKShippingMethod *> * _Nonnull, NSArray<PKPaymentSummaryItem *> * _Nonnull))completion{
  //送貨地址回撥，已棄用
}

付款成功蘋果伺服器返回資訊回撥，做伺服器驗證

-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
                     didAuthorizePayment:(PKPayment *)payment
                              completion:(void (^)(PKPaymentAuthorizationStatus status))completion {
  PKPaymentToken *payToken = payment.token;
  //支付憑據，發給服務端進行驗證支付是否真實有效
  PKContact *billingContact = payment.billingContact;     //賬單資訊
  PKContact *shippingContact = payment.shippingContact;   //送貨資訊
  PKContact *shippingMethod = payment.shippingMethod;     //送貨方式
  //等待伺服器返回結果後再進行系統block呼叫
  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
      //模擬伺服器通訊
      completion(PKPaymentAuthorizationStatusSuccess);
  });
}

支付完成回撥

-(void)paymentAuthorizationViewControllerDidFinish:(PKPaymentAuthorizationViewController *)controller{
  [controller dismissViewControllerAnimated:YES completion:nil];
}


來源：Yasin的簡書
連結：http://www.jianshu.com/p/738aee78ba52#