使用非消耗性产品（first_view 和 second_view）完成付款后，我有两个按钮打开两个新视图，我的代码在一个产品上运行良好，但我不知道如何将多个产品用于多个产品这是我的第一次体验使用应用内购买编码。我想我需要更新下面我正在使用此代码的 productsRequest 方法：
implementation ViewController
@synthesize firstBTN, secondBTN,;
#define kStoredData @"first_view"
-(BOOL)IAPItemPurchased {
NSError *error = nil;
NSString *password = [SFHFKeychainUtils getPasswordForUsername:@"username" andServiceName:kStoredData error:&error];
if ([password isEqualToString:@"password"]) return YES; else return NO;
}
-(IBAction)firstBTNPressed:(id)sender {
if ([self IAPItemPurchased]) {
firstViewController *controller = [[firstViewController alloc] initWithNibName:@"firstView" bundle:nil];
[self presentModalViewController:controller animated:YES];
[controller release];
} else {
// not purchased so show a view to prompt for purchase
askToPurchase = [[UIAlertView alloc]
initWithTitle:@"Feature Locked"
message:@"Purchase Feature?"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:@"Yes", @"No", nil];
askToPurchase.delegate = self;
[askToPurchase show];
[askToPurchase release];
}
}
-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
for (SKPaymentTransaction *transaction in transactions) {
switch (transaction.transactionState) {
case SKPaymentTransactionStatePurchasing:
break;
case SKPaymentTransactionStatePurchased:
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
UIAlertView *tmp = [[UIAlertView alloc]
initWithTitle:@"Complete"
message:@"You have unlocked Feature 2!"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:@"Ok", nil];
[tmp show];
[tmp release];
NSError *error = nil;
[SFHFKeychainUtils storeUsername:@"username" andPassword:@"password" forServiceName:kStoredData updateExisting:YES error:&error];
[firstBTN setBackgroundImage:nil forState:UIControlStateNormal];
break;
case SKPaymentTransactionStateRestored:
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
break;
case SKPaymentTransactionStateFailed:
if (transaction.error.code != SKErrorPaymentCancelled) {
NSLog(@"Error payment cancelled");
}
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
break;
default:
break;
}
}
}
-(void)productsRequest:(SKProductsRequest *)request didReceiveResponse: (SKProductsResponse *)response
{
SKProduct *validProduct = nil;
int count = [response.products count];
if (count>0) {
validProduct = [response.products objectAtIndex:0];
SKPayment *payment = [SKPayment paymentWithProductIdentifier:@"first_view"];
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
else {
UIAlertView *tmp = [[UIAlertView alloc]
initWithTitle:@"Not Available"
message:@"No products to purchase"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:@"Ok", nil];
[tmp show];
[tmp release];
}
}
-(void)requestDidFinish:(SKRequest *)request
{
[request release];
}
-(void)request:(SKRequest *)request didFailWithError:(NSError *)error
{
NSLog(@"Failed to connect with error: %@", [error localizedDescription]);
}
#pragma mark AlertView Delegate
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex: (NSInteger)buttonIndex {
if (alertView==askToPurchase) {
if (buttonIndex==0) {
if ([SKPaymentQueue canMakePayments]) {
SKProductsRequest *request = [[SKProductsRequest alloc] initWithProductIdentifiers:[NSSet setWithObject:@"first_view"]];
request.delegate = self;
[request start];
} else {
UIAlertView *tmp = [[UIAlertView alloc]
initWithTitle:@"Prohibited"
message:@"Parental Control is enabled, cannot make a purchase!"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:@"Ok", nil];
[tmp show];
[tmp release];
}
}
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
if ([self IAPItemPurchased]) {
[firstBTN setBackgroundImage:nil forState:UIControlStateNormal];
} else {
[firstBTN setBackgroundImage:[UIImage imageNamed:@"Locked.png"] forState:UIControlStateNormal];
}
}
你能帮我用打开第二个视图的第二个按钮做同样的事情吗？提前致谢。