Apple Pay接入详细教程
Apple Pay运行环境：iPhone6以上设备，操作系统最低iOS9.0以上，部分信息设置需要iOS9.2以上。目前还不支持企业证书添加。
环境搭建好后可以在模拟器上面运行，xcode7.2.1+iPhone6SP9.2系统下，系统会绑定几种虚拟的银行卡，和几个联系人，方便调试，支付也不会发生真实的付款，真的很方便。
准备工作
在接入Apple Pay之前，首先要申请MerchantID及对应证书。（请移步我写的申请MerchantID及对应证书详细图文教程）
工程设置
bundleID设置
1456455943607231.pngCapability中启用Apple Pay权限，并选择merchantID。1456456105324713.png之后项目会多一个Applepay的配置文件ApplePayYasin.entitlements1456456125808611.png需要引用的库Xcode7.0以上不需要再手动添加需要引用的库了，只需要导入头文件就可以了
#import <passkit passkit.h=""> //用户绑定的银行卡信息
#import <passkit pkpaymentauthorizationviewcontroller.h=""> //Apple pay的展示控件#import <addressbook addressbook.h=""> //用户联系信息相关</addressbook></passkit></passkit>设备Applepay权限检测
if (![PKPaymentAuthorizationViewController class]) {
//PKPaymentAuthorizationViewController需iOS8.0以上支持 NSLog(@"操作系统不支持ApplePay，请升级至9.0以上版本，且iPhone6以上设备才支持"); return; } //检查当前设备是否可以支付 if (![PKPaymentAuthorizationViewController canMakePayments]) { //支付需iOS9.0以上支持 NSLog(@"设备不支持ApplePay，请升级至9.0以上版本，且iPhone6以上设备才支持"); return; } //检查用户是否可进行某种卡的支付，是否支持Amex、MasterCard、Visa与银联四种卡，根据自己项目的需要进行检测 NSArray *supportedNetworks = @[PKPaymentNetworkAmex, PKPaymentNetworkMasterCard,PKPaymentNetworkVisa,PKPaymentNetworkChinaUnionPay]; if (![PKPaymentAuthorizationViewController canMakePaymentsUsingNetworks:supportedNetworks]) { NSLog(@"没有绑定支付卡"); return; }创建支付请求PKPaymentRequest
初始化PKPaymentRequest
这里需要注意RMB的币种代码是CNY
//设置币种、国家码及merchant标识符等基本信息
PKPaymentRequest *payRequest = [[PKPaymentRequest alloc]init]; payRequest.countryCode = @"CN"; //国家代码 payRequest.currencyCode = @"CNY"; //RMB的币种代码 payRequest.merchantIdentifier = @"merchant.ApplePayDemoYasin"; //申请的merchantID payRequest.supportedNetworks = supportedNetworks; //用户可进行支付的银行卡 payRequest.merchantCapabilities = PKMerchantCapability3DS|PKMerchantCapabilityEMV; //设置支持的交易处理协议，3DS必须支持，EMV为可选，目前国内的话还是使用两者吧设置发票配送信息和货物配送地址信息,用户设置后可以通过代理回调代理获取信息的更新
// payRequest.requiredBillingAddressFields = PKAddressFieldEmail;
//如果需要邮寄账单可以选择进行设置，默认PKAddressFieldNone(不邮寄账单)//楼主感觉账单邮寄地址可以事先让用户选择是否需要，否则会增加客户的输入麻烦度，体验不好， payRequest.requiredShippingAddressFields = PKAddressFieldPostalAddress|PKAddressFieldPhone|PKAddressFieldName; //送货地址信息，这里设置需要地址和联系方式和姓名，如果需要进行设置，默认PKAddressFieldNone(没有送货地址)1456456275620997.png
送货信息页面展示设置货物的配送方式，不需要不配置
//设置两种配送方式
PKShippingMethod *freeShipping = [PKShippingMethod summaryItemWithLabel:@"包邮" amount:[NSDecimalNumber zero]]; freeShipping.identifier = @"freeshipping"; freeShipping.detail = @"6-8 天 送达"; PKShippingMethod *expressShipping = [PKShippingMethod summaryItemWithLabel:@"极速送达" amount:[NSDecimalNumber decimalNumberWithString:@"10.00"]]; expressShipping.identifier = @"expressshipping"; expressShipping.detail = @"2-3 小时 送达"; payRequest.shippingMethods = @[freeShipping, expressShipping];1456456318214732.png
1456456342629640.png账单信息的设置每条账单的设置
账单列表使用PKPaymentSummaryItem添加描述和价格，价格使用NSDecimalNumber。
PKPaymentSummaryItem初始化：
label为商品名字或者是描述，amount为商品价格，折扣为负数，type为该条账单为最终价格还是估算价格(比如出租车价格预估)
+ (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可以使用数字初始化，也可以使用字符串。
使用方法请移步我写的NSDecimalNumber--十进制数
添加账单列表：
NSDecimalNumber *subtotalAmount = [NSDecimalNumber decimalNumberWithMantissa:1275 exponent:-2 isNegative:NO]; //12.75
PKPaymentSummaryItem *subtotal = [PKPaymentSummaryItem summaryItemWithLabel:@"商品价格" amount:subtotalAmount];NSDecimalNumber *discountAmount = [NSDecimalNumber decimalNumberWithString:@"-12.74"]; //-12.74PKPaymentSummaryItem *discount = [PKPaymentSummaryItem summaryItemWithLabel:@"优惠折扣" amount:discountAmount];NSDecimalNumber *methodsAmount = [NSDecimalNumber zero];PKPaymentSummaryItem *methods = [PKPaymentSummaryItem summaryItemWithLabel:@"包邮" 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]; //最后这个是支付给谁。哈哈，快支付给我summaryItems = [NSMutableArray arrayWithArray:@[subtotal, discount, methods, total]];//summaryItems为账单列表，类型是 NSMutableArray，这里设置成成员变量，在后续的代理回调中可以进行支付金额的调整。payRequest.paymentSummaryItems = summaryItems;显示购物信息并进行支付
//ApplePay控件
PKPaymentAuthorizationViewController *view = [[PKPaymentAuthorizationViewController alloc]initWithPaymentRequest:payRequest]; view.delegate = self; [self presentViewController:view animated:YES completion:nil];PKPaymentAuthorizationViewControllerDelegate代理
这里还有两个类要介绍
PKPayment 支付成功信息
PKPaymentToken *payToken = payment.token;
//支付凭据，发给服务端进行验证支付是否真实有效PKContact *billingContact = payment.billingContact; //账单信息PKContact *shippingContact = payment.shippingContact; //送货信息PKContact *shippingMethod = payment.shippingMethod; //送货方式PKContact 联系人信息
NSPersonNameComponents *name = contact.name; //联系人姓名
CNPostalAddress *postalAddress = contact.postalAddress; //联系人地址NSString *emailAddress = contact.emailAddress; //联系人邮箱CNPhoneNumber *phoneNumber = contact.phoneNumber; //联系人手机NSString *supplementarySubLocality = contact.supplementarySubLocality; //补充信息，地址详细描述，其他备注等等,iOS9.2及以上才有代理说明
送货地址回调
-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
didSelectShippingContact:(PKContact *)contact completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<pkshippingmethod *> * _Nonnull, NSArray<pkpaymentsummaryitem *> * _Nonnull))completion{ //contact送货地址信息，PKContact类型 //送货信息选择回调，如果需要根据送货地址调整送货方式，比如普通地区包邮+极速配送，偏远地区只有付费普通配送，进行支付金额重新计算，可以实现该代理，返回给系统：shippingMethods配送方式，summaryItems账单列表，如果不支持该送货信息返回想要的PKPaymentAuthorizationStatus completion(PKPaymentAuthorizationStatusSuccess, shippingMethods, summaryItems);}</pkpaymentsummaryitem *></pkshippingmethod *>送货方式回调
-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
didSelectShippingMethod:(PKShippingMethod *)shippingMethod completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<pkpaymentsummaryitem *> * _Nonnull))completion{ //配送方式回调，如果需要根据不同的送货方式进行支付金额的调整，比如包邮和付费加速配送，可以实现该代理 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);}</pkpaymentsummaryitem *>支付卡选择回调
-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller didSelectPaymentMethod:(PKPaymentMethod *)paymentMethod completion:(void (^)(NSArray<pkpaymentsummaryitem *> * _Nonnull))completion{
//支付银行卡回调，如果需要根据不同的银行调整付费金额，可以实现该代理 completion(summaryItems);}</pkpaymentsummaryitem *>送货地址回调，已弃用
-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller didSelectShippingAddress:(ABRecordRef)address completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<pkshippingmethod *> * _Nonnull, NSArray<pkpaymentsummaryitem *> * _Nonnull))completion{
//送货地址回调，已弃用}</pkpaymentsummaryitem *></pkshippingmethod *>付款成功苹果服务器返回信息回调，做服务器验证
-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
didAuthorizePayment:(PKPayment *)payment completion:(void (^)(PKPaymentAuthorizationStatus status))completion { PKPaymentToken *payToken = payment.token; //支付凭据，发给服务端进行验证支付是否真实有效 PKContact *billingContact = payment.billingContact; //账单信息 PKContact *shippingContact = payment.shippingContact; //送货信息 PKContact *shippingMethod = payment.shippingMethod; //送货方式 //等待服务器返回结果后再进行系统block调用 dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ //模拟服务器通信 completion(PKPaymentAuthorizationStatusSuccess); });}支付完成回调
-(void)paymentAuthorizationViewControllerDidFinish:(PKPaymentAuthorizationViewController *)controller{
[controller dismissViewControllerAnimated:YES completion:nil];}