//需要遵守的代理
<SKStoreProductViewControllerDelegate,UIGestureRecognizerDelegate,SKPaymentTransactionObserver,SKProductsRequestDelegate>


#import <StoreKit/StoreKit.h>

//沙盒测试环境验证
#define SANDBOX @"https://sandbox.itunes.apple.com/verifyReceipt"
//正式环境验证
#define AppStore @"https://buy.itunes.apple.com/verifyReceipt"

- (void)buyBtnAction {
    
    [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
    
    NSArray* transactions = [SKPaymentQueue defaultQueue].transactions;
    
    for (SKPaymentTransaction *transaction in transactions) {
        
        NSLog(@"transactionState:%ld", transaction.transactionState);
        [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
    }

    if([SKPaymentQueue canMakePayments]){
        
        NSLog(@"-------------请求对应的产品信息----------------");
        
        NSArray *product = [[NSArray alloc] initWithObjects:self.product_id,nil];
        NSSet *nsset = [NSSet setWithArray:product];
        SKProductsRequest *request = [[SKProductsRequest alloc] initWithProductIdentifiers:nsset];
        request.delegate = self;
        [request start];
        
    }else{
        NSLog(@"不允许程序内付费");
    }
}

//收到产品返回信息
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response{
    
    NSLog(@"--------------收到产品反馈消息---------------------");
    NSArray *product = response.products;
    if([product count] == 0){
        NSLog(@"--------------没有商品------------------");
        return;
    }
    
    NSLog(@"productID:%@", response.invalidProductIdentifiers);
    NSLog(@"产品付费数量:%lu",(unsigned long)[product count]);
    
    SKProduct *p = nil;
    for (SKProduct *pro in product) {
        
        NSLog(@"%@", [pro description]);
        NSLog(@"%@", [pro localizedTitle]);
        NSLog(@"%@", [pro localizedDescription]);
        NSLog(@"%@", [pro price]);
        NSLog(@"%@", [pro productIdentifier]);
        
        if([pro.productIdentifier isEqualToString:self.product_id]){
            p = pro;
        }
    }
    
    SKPayment *payment = [SKPayment paymentWithProduct:p];
    
    NSLog(@"发送购买请求");
    
    [[SKPaymentQueue defaultQueue] addPayment:payment];
}

//请求失败
- (void)request:(SKRequest *)request didFailWithError:(NSError *)error{
    
    NSLog(@"------------------错误-----------------:%@", error);
}

- (void)requestDidFinish:(SKRequest *)request{
    
    NSLog(@"------------反馈信息结束-----------------");
}

/**
 *  验证购买，避免越狱软件模拟苹果请求达到非法购买问题
 *
 */
-(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];
    
    NSString *receiptString=[receiptData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed];//转化为base64字符串
    
    NSString *bodyString = [NSString stringWithFormat:@"{\"receipt-data\" : \"%@\"}", receiptString];//拼接请求数据
    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(@"Appstore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(@"Appstore下购买成功！");
        [self rechargeSuccess];
    
        NSArray *items = @[MMItemMake(@"确定", MMItemTypeHighlight, nil)];
        [[[MMAlertView alloc] initWithTitle:@"充值成功！" detail:nil items:items] showWithBlock:nil];
        
        
    }else{
        
        NSLog(@"Appstore下购买失败，未通过验证！");
        
        //创建请求到苹果官方进行购买验证
        NSURL *url2 = [NSURL URLWithString:SANDBOX];
        NSMutableURLRequest *requestM2 = [NSMutableURLRequest requestWithURL:url2];
        requestM2.HTTPBody = bodyData;
        requestM2.HTTPMethod = @"POST";
        //创建连接并发送同步请求
        NSError *error2 = nil;
        NSData *responseData2 = [NSURLConnection sendSynchronousRequest:requestM2 returningResponse:nil error:&error2];
        
        if (error2) {
            
            NSLog(@"SandBox验证购买过程中发生错误，错误信息：%@",error2.localizedDescription);
            return;
        }
        NSDictionary *dic2 = [NSJSONSerialization JSONObjectWithData:responseData2 options:NSJSONReadingAllowFragments error:nil];
        NSLog(@"%@",dic2);
        if([dic2[@"status"] intValue] == 0){
            
            NSLog(@"SandBox下购买成功！");
            
            [self rechargeSuccess];
            NSArray *items = @[MMItemMake(@"确定", MMItemTypeHighlight, nil)];
            [[[MMAlertView alloc] initWithTitle:@"充值成功！" detail:nil items:items] showWithBlock:nil];
            
        }else{
            
            NSLog(@"SandBox下购买失败，未通过验证！");
            
        }
    }
}
//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");
                [[SKPaymentQueue defaultQueue] finishTransaction:tran];
                [self verifyPurchaseWithPaymentTransaction];
                
            }
                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];
                
            }
                break;
            default:
                break;
        }
    }
}
//交易结束
- (void)paymentQueue:(SKPaymentQueue *)queue removedTransactions:(NSArray<SKPaymentTransaction *> *)transactions {
    
    [[SKPaymentQueue defaultQueue] removeTransactionObserver:self];
    NSLog(@"交易结束");
    
}

- (void)dealloc {
    
    [[SKPaymentQueue defaultQueue] removeTransactionObserver:self];
}