In App Purchase - TaehoonADS/Study_iOS GitHub Wiki

참고 :+1: 인앱결제에 대한 블로그_kr

사용되는 프레임 워크

1. StoreKit

사용되는 객체 1.SKPaymentQueue

+canMakePayments() ; 스토어가 사용 가능한가? +defaultQueue() ; 초기 Queue 반환

addTransactionObsever:object ;옵져버를 등록한다. 추후에

옵져버로 등록된 클래스는 SKPaymentTransactionObserver Protocol 구현해야함.

#import <StoreKit/SKProductsRequest.h>
#import <StoreKit/SKProduct.h>
#import <StoreKit/SKPaymentQueue.h>
#import <StoreKit/SKPaymentTransaction.h>

-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions{
    for(SKPaymentTransaction *transaction in transactions){
        switch(transaction.transactionState){
        case SKPaymentTransactionStatePurchased:
            [self completeTransaction:transaction];
            break;
        case SKPaymentTransactionStateFailed:
            [self failedTransaction:transaction];
            break;
        case SKPaymentTransactionStateRestored:
           [self resotreTransaction:transaction];
        default:
            break;
        }
    }
} 

transaction 상태에 따라 성공인지, 실패인지, 복구되었는지에 따라 처리해 주어야한다.

-(void)restoreTransaction:(SKPaymentTransaction*)transaction{
    NSLog(@"SKPaymentTransactionStateResored");
    [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}

-(void)failedTransaction:(SKPaymentTransaction*)transaction{
    NSLog(@"SKPaymentTransactionStatFailed");
    [SKPaymentQueue defaultQueue](/TaehoonADS/Study_iOS/wiki/SKPaymentQueue-defaultQueue) finishTransaction:transaction];
}

-(void)completeTransaction:(SKPaymentTransaction*)transaction{
    NSLog(@"SKPaymentTransactionStatePurchased");

    NSLog(@"Transaction Identifier : %@", transaction.transactionIdentifier);
    NSLog(@"Transaction Date : %@", transaction.transactionDate);
    
    [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}

아이템 정보를 가져오려면 SKProductRequest 객체가 요청을 하고 그 결과에 따라 delegate의 productRequest:didReceiveResponse 메소드를 호출한다.

SKProductsRequest *productRequest = [SKProductsRequest alloc] initWithProductIdentifiers:[NSSet setWithObject:@"testitem_01"](/TaehoonADS/Study_iOS/wiki/SKProductsRequest-alloc]-initWithProductIdentifiers:[NSSet-setWithObject:@"testitem_01");

productRequest.delegate = self;

[productRequest start];

delegate 는 SKProductRequestDelegate Protocol 구현을 하면 된다.

-(void)productsRequest:(SKProductsRequest*)request didReceiveResponse:(SKProductsResponse*)response{
    NSLog(@"SKProductRequest got response");
    if([response.products count]) > 0 ) {
        NSString *invalidString = [response.invalidProductIdentifiers objectAtIndex:0];
        NSLog(@"Invalid Identifiers : %@", invalidString);
    }
}

원하는 아이템 결제를 요청하려면 어떻게 해야하는가?

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