iOS集成微信支付

一、微信支付,首先利用CocoaPods,导入支付宝SDK
pod 'WechatOpenSDK'
二、 创建微信支付管理类 WechatManager
//  WechatManager.h
#import <Foundation/Foundation.h>
#import <WXApi.h>

@interface WechatManager : NSObject

+ (id)shareInstance;

+ (BOOL)handleOpenUrl:(NSURL *)url;

+ (void)hangleWechatPayWith:(PayReq *)req;

@end
// WechatManager.m
#import "WechatManager.h"

@interface WechatManager()<WXApiDelegate>

@end

@implementation WechatManager

+ (id)shareInstance {
    static WechatManager *weChatPayInstance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        weChatPayInstance = [[WechatManager alloc] init];
    });
    return weChatPayInstance;
}

+ (BOOL)handleOpenUrl:(NSURL *)url {
    return [WXApi handleOpenURL:url delegate:[WechatManager shareInstance]];
}

+ (void)hangleWechatPayWith:(PayReq *)req {
    [WXApi sendReq:req completion:^(BOOL success) {
        if (success) {
            NSLog(@"微信支付成功");
        } else {
             NSLog(@"微信支付异常");
        }
    }];
}

#pragma mark - 微信支付回调

- (void)onResp:(BaseResp *)resp {
    if ([resp isKindOfClass:[PayResp class]]) {
        /*
         enum  WXErrCode {
         WXSuccess           = 0,    < 成功
         WXErrCodeCommon     = -1,  < 普通错误类型
         WXErrCodeUserCancel = -2,   < 用户点击取消并返回
         WXErrCodeSentFail   = -3,   < 发送失败
         WXErrCodeAuthDeny   = -4,   < 授权失败
         WXErrCodeUnsupport  = -5,   < 微信不支持
         };
         */
        PayResp *response = (PayResp*)resp;
        switch (response.errCode) {
            case WXSuccess: {
                NSLog(@"微信回调支付成功");
                [[NSNotificationCenter defaultCenter] postNotificationName:UserNotificationAlipayOrWechatSuccess
                                                                    object:nil
                                                                  userInfo:nil];
            break;
            }
            case WXErrCodeCommon: {
                NSLog(@"微信回调支付异常");
                break;
            }
            case WXErrCodeUserCancel: {
                NSLog(@"微信回调用户取消支付");
                break;
            }
            case WXErrCodeSentFail: {
                NSLog(@"微信回调发送支付信息失败");
                break;
            }
            case WXErrCodeAuthDeny: {
                NSLog(@"微信回调授权失败");
                break;
            }
            case WXErrCodeUnsupport: {
                NSLog(@"微信回调微信版本暂不支持");
                break;
            }
            default: {
                break;
            }
        }
    }
}
@end
三、在AppDelegate里面注册APPKey
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = [UIColor whiteColor];
     LoginCodeViewController *mainViewController = [[LoginCodeViewController alloc] init];
        self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:mainViewController];
    [self.window makeKeyAndVisible];
    // 微信支付注册
    // WeiXinPayKey:APP在微信开发者网站上申请的Key。WeiXinLinks:微信开发者Universal Link(这个有点麻烦,后面会详细说明,先把集成过程讲完)。
    BOOL isSuccess = [WXApi registerApp:WeiXinPayKey universalLink:WeiXinLinks];
    if (isSuccess) {
        NSLog(@"微信支付API注册成功");
    } else {
        NSLog(@"微信支付API注册失败");
    }    return YES;
}
四、补充说明:WeiXinPayKey:APP在微信开发者网站上申请的Key。WeiXinLinks:是微信开发者的Universal Link(通用链接),
  1. 该链接一般为以https开头的公司域名;
  2. 开发者中心配置,配置App ID支持Associated Domains:
配置开发者中心支持Associated Domains.png
  1. Xcode工程配置
  • 在工程里 -Capabilities 里面打开Associated Domains开关,配置内容为以下格式:
applinks:www.baidu.com

Xcode配置.jpg
  • 在工程里 -Info 里面新建 LSApplicationQueriesSchemes数组,配置内容为以下格式:
    LSApplicationQueriesSchemes.png
  1. 配置指定文件,这个文件名必须为apple-app-site-association,切记没有后缀名,文件内容如下:
{
    "applinks": {
        "apps": [],
        "details": [
            {
                "appID": "9JA89QQLNQ.com.apple.wwdc",
                "paths": [ "/wwdc/news/", "/videos/wwdc/2015/*"]
            },
            {
                "appID": "Xcode项目的Bundle Identifier",
                "paths": [ "*" ]
            }
        ]
    }
}
  1. 上传上一步新建的文件到域名根目录下:
  • 上传该文件到你的域名所对应的根目录或者.well-known目录下,这是为了苹果能获取到你上传的文件。
五、APPDelegate 处理支付SDK回调
#pragma mark - 微信支付配置返回 url处理方法

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options {
    if ([url.scheme containsString:WeiXinPayKey]) {
        if ([url.absoluteString containsString:[NSString stringWithFormat:@"%@://pay", WeiXinPayKey]]) {
            return [WechatManager handleOpenUrl:url];
        } else if ([url.absoluteString containsString:[NSString stringWithFormat:@"%@://oauth?", WeiXinPayKey]]) {
            return [WechatManager handleOpenUrl:url];
        }
    }
    return YES;
}
- (BOOL)application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray<id<UIUserActivityRestoring>> * _Nullable))restorationHandler {
    NSURL *continueURL = userActivity.webpageURL;
    NSString *relativePath = continueURL.relativePath;
    if ([relativePath containsString:WeiXinPayKey] && [relativePath containsString:@"pay"]) {
        return [WXApi handleOpenUniversalLink:userActivity delegate:[WechatManager shareInstance]];
    } else if ([relativePath containsString:[NSString stringWithFormat:@"%@", WeiXinPayKey]]) {
        return [WXApi handleOpenUniversalLink:userActivity delegate:[WechatShareManager shareInstance]];
    }
    return YES;
}
六、URL-Types配置,这个schems就是微信开发者平台注册的APPKey
URLType配置.jpg
七、调用支付接口,处理微信支付后处理通知
  1. 在支付界面控制器,添加通知
- (void)viewDidLoad {
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(ailyPayOrWechatSuccessAction)
                                                 name:UserNotificationAlipayOrWechatSuccess
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(ailyPayOrWechatFailAction)
                                                 name:UserNotificationAlipayOrWechatFail
                                               object:nil];
}

  1. 书写支付结果通知回调方法, 然后对通知的函数进行处理
#pragma mark - 利用通知处理支付结果

// 支付成功
- (void)ailyPayOrWechatSuccessAction {
    // 处理支付结果
    NSLog(@"处理支付成功结果");
}

// 支付失败
- (void)ailyPayOrWechatFailAction {
    NSLog(@"处理支付失败结果");

}

- (void)dealloc {
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}
  1. 创建订单,创建成功后拿到后台返回的信息,然后调用微信支付
#pragma mark - 确认支付

- (void)userBuyGoodsAction {
    
    //  @param address_id 地址ID
    //  @param count 商品数量
    //  @param refer_id 商品ID
    //  @param refer_type 商品类型 0课程 1直播
    //  @param type 支付类型 0微信 1支付宝
    //  @param coupon_id 优惠券ID
    //  @param handle 返回签名
    
    int type = self.isWeixinPay ? 0 : 1;
    [HttpManager createOrderWithAddressId:self.locationModel.location_id count:@(1) refer_id:self.lessonModel.ID refer_type:@(0) type:@(type) coupon_id:nil andHandle:^(NSString *error, NSDictionary *result) {
        if (error == nil) {
           NSLog(@"微信支付创建订单回执-%@",result);
           NSDictionary *dict = [self jsonToDictionary:result[@"data"][@"data"]];
           PayReq *req   = [[PayReq alloc] init];
           req.nonceStr  = [dict objectForKey:@"noncestr"];
           req.timeStamp = [[dict objectForKey:@"timestamp"] intValue];
           req.package   = [dict objectForKey:@"package"];
           req.partnerId = [dict objectForKey:@"partnerid"];
           req.prepayId  = [dict objectForKey:@"prepayid"];
           req.sign      = [dict objectForKey:@"sign"];
           [WechatManager hangleWechatPayWith:req];
        } else {
            NSLog(@"订单创建失败,失败原因-%@",result);
        }
    }];
}

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