苹果内购买

#import <StoreKit/StoreKit.h>

<SKProductsRequestDelegate,SKPaymentTransactionObserver>

1、根据商品id，请求商品列表

　  NSArray *product = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"ProductList" ofType:@"plist"]];
    NSSet *nsset = [NSSet setWithArray:product];
    SKProductsRequest *request = [[SKProductsRequest alloc] initWithProductIdentifiers:nsset];
    request.delegate = self;
    [request start];

2、请求结果

//收到产品返回信息
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response{
    //商品信息
    NSArray *product = response.products;
}

//请求失败
- (void)request:(SKRequest *)request didFailWithError:(NSError *)error{

}
//请求结束
- (void)requestDidFinish:(SKRequest *)request{

}

3、发起支付请求

SKPayment *payment = [SKPayment paymentWithProduct:product];
[[SKPaymentQueue defaultQueue] addPayment:payment];

4、监听购买结果

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transaction{
    for(SKPaymentTransaction *tran in transaction){
        switch (tran.transactionState) {
            case SKPaymentTransactionStatePurchased:{

                NSLog(@"交易完成");
                // 发送到苹果服务器验证凭证
                [self verifyPurchaseWithPaymentTransaction];
                [[SKPaymentQueue defaultQueue] finishTransaction:tran];
            }
                break;
            case SKPaymentTransactionStatePurchasing:

                NSLog(@"商品添加进列表");
                break;
            case SKPaymentTransactionStateRestored:{

                NSLog(@"已经购买过商品");
                [[SKPaymentQueue defaultQueue] finishTransaction:tran];
            }
                break;
            case SKPaymentTransactionStateFailed:{

                NSLog(@"交易失败");
                [[SKPaymentQueue defaultQueue] finishTransaction:tran];
                [SVProgressHUD showErrorWithStatus:@"购买失败"];
            }
                break;
            default:
                break;
        }
    }
}

5、验证购买结果

-(void)verifyPurchaseWithPaymentTransaction{
    //从沙盒中获取交易凭证并且拼接成请求体数据
    NSURL *receiptUrl=[[NSBundle mainBundle] appStoreReceiptURL];
    NSData *receiptData=[NSData dataWithContentsOfURL:receiptUrl];
    //转化为base64字符串
    NSString *receiptString=[receiptData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed];
    //拼接请求数据
    NSString *bodyString = [NSString stringWithFormat:@"{\"receipt-data\" : \"%@\"}", receiptString];
    NSData *bodyData = [bodyString dataUsingEncoding:NSUTF8StringEncoding];
    
    //创建请求到苹果官方进行购买验证
    NSURL *url=[NSURL URLWithString:AppStore];
    NSMutableURLRequest *requestM=[NSMutableURLRequest requestWithURL:url];
    requestM.HTTPBody=bodyData;
    requestM.HTTPMethod=@"POST";
    
    //创建连接并发送同步请求
    NSError *error=nil;
    NSData *responseData=[NSURLConnection sendSynchronousRequest:requestM returningResponse:nil error:&error];

    if (error) {

        NSLog(@"验证购买过程中发生错误，错误信息：%@",error.localizedDescription);
        return;
    }
    
    NSDictionary *dic=[NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingAllowFragments error:nil];
    NSLog(@"%@",dic);
    
    if([dic[@"status"] intValue]==0){

        NSLog(@"购买成功！");
    }else{

        NSLog(@"购买失败，未通过验证！");
    }
}

6、交易结束

//交易结束
- (void)completeTransaction:(SKPaymentTransaction *)transaction{

    NSLog(@"交易结束");
    [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}