一、微信支付，首先利用CocoaPods导入微信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:UserNotificationAlipayOrWechatSuccessobject:niluserInfo: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 为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AppID支持Associated Domains：
3.Xcode工程配置
在工程 Capabilities 里面打开Associated Domains开关，配置内容为以下格式：
applinks:www.baidu.com 
在工程 Info 里面新建 LSApplicationQueriesSchemes 数组，配置内容为以下格式：
4.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": [ "*" ]}]}
}5.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schemes就是微信开发者平台注册的AppKey
七、调用支付接口，处理微信支付后的通知事件
1.在支付界面控制器，添加通知
- (void)viewDidLoad {[[NSNotificationCenter defaultCenter] addObserver:selfselector:@selector(ailyPayOrWechatSuccessAction)name:UserNotificationAlipayOrWechatSuccessobject:nil];[[NSNotificationCenter defaultCenter] addObserver:selfselector:@selector(ailyPayOrWechatFailAction)name:UserNotificationAlipayOrWechatFailobject:nil];
}2.实现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];
}3.创建订单，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);}}];
}
