#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];}