NSString *userid = @"100002"; //标记用户NSString *price = @"3"; //标识商品NSDictionary *parametersDic = [[NSDictionary alloc]initWithObjectsAndKeys:userid,@"userid",price,@"price", nil];AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];[manager GET:@"http://192.168.2.104:3000/apay" parameters:parametersDic progress:^(NSProgress * _Nonnull downloadProgress) {} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {//接收服务器返回的订单号//在这里调起苹果支付（即下面的getProduct方法）NSLog(@"send verify message succeed:%@",responseObject);} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {NSLog(@"send verify message filure:%@",error);}];

//查询是否可以内购并且获取产品信息（实际应从服务器中获取）
- (void)getProduct{if ([SKPaymentQueue canMakePayments]) {// 监听购买结果[[SKPaymentQueue defaultQueue] addTransactionObserver:self];NSSet *set = [NSSet setWithArray:@[@"com.socol.12",@"comsocol.68",@"com.socol.168"]];//这里在ituns里面配置SKProductsRequest * request = [[SKProductsRequest alloc] initWithProductIdentifiers:set];request.delegate = self;[request start]; //发送请求 ，返回的结果会走SKProductsRequestDelegate}else{NSLog(@"失败，用户禁止应用内付购买");}
}

#pragma mark - SKProductsRequestDelegate 协议方法
//当开始购买后将回调该方法返回查询的结果
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {NSArray *myProduct = response.products;if (myProduct.count == 0) {NSLog(@"无法获取产品信息，购买失败。");return;}NSLog(@"所有产品信息如下");for (SKProduct *pro in myProduct) {NSLog(@"localizedDescription - %@",pro.localizedDescription);//产品描述NSLog(@"price - %@",pro.price);//价格NSLog(@"localizedTitle - %@",pro.localizedTitle);//产品标题NSLog(@"priceLocale - %@",pro.priceLocale);//产品地域标识NSLog(@"productIdentifier - %@",pro.productIdentifier); //产品idNSLog(@"downloadable - %d",pro.downloadable);//产品描述NSLog(@"downloadContentLengths - %@",pro.downloadContentLengths);//产品描述NSLog(@"downloadContentVersion - %@",pro.downloadContentVersion);//产品描述NSLog(@"----------------------------------------------------------------");}//这里购买某一件商品（符合用户需求的）for (SKProduct *pro in myProduct) {if (@“3" isEqualToString:[pro.price stringValue]]) {product = pro;SKPayment * payment = [SKPayment paymentWithProduct:product];[[SKPaymentQueue defaultQueue] addPayment:payment];//开始购买 购买结果也会走SKPaymentTransactionObserverbreak;}}
}

#pragma mark -SKPaymentTransactionObserver方法
//当注册监听购买结果后将调用该方法
- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {for (SKPaymentTransaction *transaction in transactions){switch (transaction.transactionState){case SKPaymentTransactionStatePurchased://交易完成[self completeTransaction:transaction];//调用交易成功的方法break;case SKPaymentTransactionStateFailed://交易失败NSLog(@"发生错误：%@",transaction.error);[self failedTransaction:transaction];break;case SKPaymentTransactionStateRestored://已经购买过该商品[self restoreTransaction:transaction];break;case SKPaymentTransactionStatePurchasing:      //商品添加进列表NSLog(@"商品添加进列表");case SKPaymentTransactionStateDeferred:      //商品添加进列表NSLog(@"等待外部操作");break;default:break;}}
}

//购买成功
- (void)completeTransaction:(SKPaymentTransaction *)transaction {// Your application should implement these two methods.NSLog(@"购买成功-----单号：%@",transaction.transactionIdentifier);NSData *datas = [transaction.transactionReceipt base64EncodedDataWithOptions:0];NSString *datasStr = [[NSString alloc]initWithData:datas encoding:NSUTF8StringEncoding];NSLog(@"验证信息%@",datasStr);//本地存储购买凭证（防止验证信息发送不到服务器的情况，每当重启应用都应该检测userdefault里面是否有pripayid值，如果有重新向服务器发送验证信息  防止漏单   当服务器接收到验证信息后清空userdefault）[[NSUserDefaults standardUserDefaults] setObject:self.prepayid forKey:@"prepayid"];[[NSUserDefaults standardUserDefaults] setObject:datasStr forKey:@"verifyString"];//购买成功后通知服务器[self verifyTransaction:datasStr withOrderString:@“用户的userid"];// Remove the transaction from the payment queue.[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}//购买失败
- (void)failedTransaction:(SKPaymentTransaction *)transaction {if(transaction.error.code != SKErrorPaymentCancelled) {NSLog(@"购买失败");} else {NSLog(@"用户取消交易");}//购买失败通知服务器[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
//重复购买
- (void)restoreTransaction:(SKPaymentTransaction *)transaction {// 对于已购商品，处理恢复购买的逻辑NSLog(@"已购买过该商品");//重复购买通知服务器[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}

//通知服务器
- (void)verifyTransaction:(NSString *)transactionString withOrderString:(NSString *)orderString{NSDictionary *parametersDic = [[NSDictionary alloc]initWithObjectsAndKeys:orderString,@"orderString",transactionString,@"verifyString", nil];AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];[manager POST:@"http://192.168.2.111:3000/notify" parameters:parametersDic progress:^(NSProgress * _Nonnull uploadProgress) {} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {NSLog(@"send verify message succeed:%@",responseObject); //如果验证信息成功发送给服务器后就清空userdefault 否则每次重启应用都会向服务器发送验证信息 防止漏单[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"orderString"];[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"verifyString"];} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {NSLog(@"send verify message filure:%@",error);[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"orderString"];[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"verifyString"];}];
}