ApplePay

　　ApplePay要在项目有里配置，，配置好项目之后，就剩下编码了，做ApplePay首先要检查设备是否支持ApplePay，支持 ApplePay的设备在 iPhone6及以后，  PKPaymentButton按钮在 iOS 8.3以后可以使用，中国银联卡在 iOS 9.2及以后可以使用。

代码：

ViewController

#import "ViewController.h"
#import <PassKit/PassKit.h>
#import "UIView+ShowAlert.h"

#define kDevice_SystemVersion [[UIDevice currentDevice].systemVersion floatValue]

//用户是否可进行某种卡的支付，是否支持Amex、MasterCard、Visa
#define SupportApplePayNetworks @[PKPaymentNetworkAmex, PKPaymentNetworkMasterCard,PKPaymentNetworkVisa]

//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
#define SupportApplePayNetworksAndChina @[PKPaymentNetworkAmex, PKPaymentNetworkMasterCard,PKPaymentNetworkVisa,PKPaymentNetworkChinaUnionPay]

@interface ViewController () <PKPaymentAuthorizationViewControllerDelegate>

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // PKPaymentButton 按钮 8.3 之后
    if (kDevice_SystemVersion >= 8.3) {
        PKPaymentButton *payButton = [[PKPaymentButton alloc] initWithPaymentButtonType:PKPaymentButtonTypeBuy paymentButtonStyle:PKPaymentButtonStyleBlack];
        payButton.center = self.view.center;
        [self.view addSubview:payButton];

        [payButton addTarget:self action:@selector(pay:) forControlEvents:UIControlEventTouchUpInside];
    }
}

- (IBAction)pay:(id)sender {

    // 苹果支付 8.3 版本之后可以用，如果在中国是 9.2 之后可以
    if (![PKPaymentAuthorizationViewController class] || kDevice_SystemVersion < 8.3) {
        [self.view myShowAlertView:@"OS does not support Apple Pay, please upgrade to version 8.3 or above. Only iPhone6 or above devices are supported."];
        return;
    }

    //检查当前设备是否可以支付
    if(![PKPaymentAuthorizationViewController canMakePayments]) {
        [self.view myShowAlertView:@"The device does not support Apple Pay, please upgrade to version 8.3 or above. Only iPhone6 or above devices are supported."];
        return;
    }

    //检查用户是否可进行某种卡的支付，银联卡9.2之后才支持。 根据自己项目的需要进行检测
    NSArray *supportedNetworks = kDevice_SystemVersion >= 9.2 ? SupportApplePayNetworksAndChina:SupportApplePayNetworks;
    if (![PKPaymentAuthorizationViewController canMakePaymentsUsingNetworks:supportedNetworks]) {
        [self.view myShowAlertView:@"No payment card binding."];
        return;
    }


    PKPaymentRequest *paymentRequest = [[PKPaymentRequest alloc] init];

    PKPaymentSummaryItem *total = [PKPaymentSummaryItem summaryItemWithLabel:@"ROMWE" amount:[NSDecimalNumber decimalNumberWithString:@"33.99"]];

    paymentRequest.paymentSummaryItems = @[total];

    // currencyCode 设置币种
//    paymentRequest.currencyCode = [[NSLocale currentLocale] objectForKey:NSLocaleCountryCode];//用户当前地区的币种
    //    // 人民币
        paymentRequest.currencyCode = @"CNY";

    // countryCode 设置国家
    paymentRequest.countryCode = @"CN";  // 中国    注意：currencyCode 和 countryCode 应该是对应的额

    // 在 developer.apple.com member center 里设置的 merchantID
    paymentRequest.merchantIdentifier = @"merchant.com.romwe.dotfashion";

    // PKMerchantCapabilityCredit 在真机上无法回调 `didAuthorizePayment` 方法
    paymentRequest.merchantCapabilities = PKMerchantCapability3DS;

    // 支持哪种结算网关
    paymentRequest.supportedNetworks = supportedNetworks;


    PKPaymentAuthorizationViewController *paymentVC = [[PKPaymentAuthorizationViewController alloc] initWithPaymentRequest:paymentRequest];
    if (paymentVC) {
        paymentVC.delegate = self;
        [self presentViewController:paymentVC animated:YES completion:NULL];
    } else {
        [self.view myShowAlertView:@"You can only use debit or credit card provided by:American express, Visa, Mastercard, Union pay"];
    }

}

#pragma mark - Payment delegate
//支付卡选择回调
- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller didSelectPaymentMethod:(PKPaymentMethod *)paymentMethod completion:(void (^)(NSArray<PKPaymentSummaryItem *> * _Nonnull))completion {
    NSLog(@"didSelectPaymentMethod");
    completion(@[]);
}

//送货地址回调
-(void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller didSelectShippingContact:(PKContact *)contact completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<PKShippingMethod *> * _Nonnull, NSArray<PKPaymentSummaryItem *> * _Nonnull))completion {
    NSLog(@"didSelectShippingContact");
}

//送货方式回调
- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller didSelectShippingMethod:(PKShippingMethod *)shippingMethod completion:(void (^)(PKPaymentAuthorizationStatus, NSArray<PKPaymentSummaryItem *> * _Nonnull))completion {
    NSLog(@"didSelectShippingMethod");
}

//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))completion {
    NSLog(@"---------------did authorize payment token: %@, %@", payment.token, payment.token.transactionIdentifier);

    // 发送网络 请求  做服务器验证
    BOOL seccess; // 服务器返回成功
    if (/* 请求成功 */seccess) {
        completion(PKPaymentAuthorizationStatusSuccess);
    } else {
        completion(PKPaymentAuthorizationStatusFailure);
    }
}

//支付完成回调
- (void)paymentAuthorizationViewControllerDidFinish:(PKPaymentAuthorizationViewController *)controller {
    [controller dismissViewControllerAnimated:controller completion:NULL];

    // 支付完成之后可以在这里做一些逻辑，比如跳转到订单详情
    UIViewController *vc = [[UIViewController alloc] init];
    vc.view.backgroundColor = [UIColor redColor];
    [self.navigationController pushViewController:vc animated:YES];
}

@end

Demo:http://files.cnblogs.com/files/10-19-92/ApplePayDemo.zip