How do you add multiple in-app purchases to an iPhone application? - objective-c

Question

okay, So i basically followed the tutorial in this link
http://www.techotopia.com/index.php/An_iOS_7_In-App_Purchase_Tutorial
I also tried the tutorial in this one: How do you add an in-app purchase to an iOS application? but it did not work for me. I would really appreciate it if someone helps me out. I'm going to use the first link because that's the tutorial I used. It works fine for one in app purchase, BUT, how do i do it for more in app purchases? for more levels? The tutorial only teaches one, and so I try and follow the same tutorial but by changing the names, and it STILL doesn't work. The closest I got was it does purchase it, but it does not enable the button even though I connected the Outlets. Need help, the coding is provided below:
ViewController.h
enter code here#import <UIKit/UIKit.h>
#import <StoreKit/StoreKit.h>
#import "PurchaseViewController.h"
#import "SecondPurchaseViewController.h"
#interface MAGViewController : UIViewController
- (IBAction)purchaseItem:(id)sender;
#property (strong, nonatomic) IBOutlet UIButton *level2Button;
#property (strong, nonatomic) PurchaseViewController *purchaseController;
- (IBAction)SecondpurchaseItem:(id)sender;
#property (strong, nonatomic) IBOutlet UIButton *level3Button;
#property (strong, nonatomic) SecondPurchaseViewController *SecondpurchaseController;
-(void)enableLevel2;
-(void)enableLevel3;
#end
And the .m file is: (i did put the #import "PurchaseViewController.h" so it's not that and i also put the Second one as well.
- (IBAction)purchaseItem:(id)sender {
_purchaseController.productID =
#"com.example.IAP.courseone";
[self.navigationController
pushViewController:_purchaseController animated:YES];
[_purchaseController getProductInfo: self];
}
- (IBAction)SecondpurchaseItem:(id)sender {
_SecondpurchaseController.SecondproductID =
#"com.example.IAP.coursetwo";
[self.navigationController
pushViewController:_SecondpurchaseController animated:YES];
[_SecondpurchaseController getSecondProductInfo: self];
}
-(void)enableLevel2
{
_level2Button.enabled = YES;
}
-(void)enableLevel3
{
_level3Button.enabled = YES;
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
_purchaseController = [[PurchaseViewController alloc]init];
[[SKPaymentQueue defaultQueue]
addTransactionObserver:_purchaseController];
//
_SecondpurchaseController = [[SecondPurchaseViewController alloc]init];
[[SKPaymentQueue defaultQueue]
addTransactionObserver:_SecondpurchaseController];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
PurchaseViewController.h is
#import <UIKit/UIKit.h>
#import <StoreKit/StoreKit.h>
#interface PurchaseViewController : UIViewController <SKPaymentTransactionObserver, SKProductsRequestDelegate>
#property (strong, nonatomic) IBOutlet UILabel *productTitle;
#property (strong, nonatomic) IBOutlet UITextView *productDescription;
#property (strong, nonatomic) IBOutlet UIButton *buyButton;
- (IBAction)buyProduct:(id)sender;
#property (strong, nonatomic) SKProduct *product;
#property (strong, nonatomic) NSString *productID;
- (void)getProductInfo:(UIViewController *)viewController;
#end
PurchaseViewController.m is:
#interface PurchaseViewController ()
#property (strong, nonatomic) MAGViewController *homeViewController;
#end
#implementation PurchaseViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
//// -->
-(void)getProductInfo: (MAGViewController *) viewController
{
_homeViewController = viewController;
if ([SKPaymentQueue canMakePayments])
{
SKProductsRequest *request = [[SKProductsRequest alloc]
initWithProductIdentifiers:
[NSSet setWithObject:self.productID]];
request.delegate = self;
[request start];
}
else
_productDescription.text =
#"Please enable In App Purchase in Settings";
}
//
//
#pragma mark -
#pragma mark SKProductsRequestDelegate
-(void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response
{
NSArray *products = response.products;
if (products.count != 0)
{
_product = products[0];
_buyButton.enabled = YES;
_productTitle.text = _product.localizedTitle;
_productDescription.text = _product.localizedDescription;
} else {
_productTitle.text = #"Product not found";
}
products = response.invalidProductIdentifiers;
for (SKProduct *product in products)
{
NSLog(#"Product not found: %#", product);
}
}
////
- (IBAction)buyProduct:(id)sender {
SKPayment *payment = [SKPayment paymentWithProduct:_product];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
////
#pragma mark -
#pragma mark SKPaymentTransactionObserver
-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
for (SKPaymentTransaction *transaction in transactions)
{
switch (transaction.transactionState) {
case SKPaymentTransactionStatePurchased:
[self unlockFeature];
[[SKPaymentQueue defaultQueue]
finishTransaction:transaction];
break;
case SKPaymentTransactionStateRestored:
NSLog(#"Transaction state -> Restored");
//add the same code as you did from SKPaymentTransactionStatePurchased here
[self unlockFeature];
[[SKPaymentQueue defaultQueue]
finishTransaction:transaction];
break;
case SKPaymentTransactionStateFailed:
NSLog(#"Transaction Failed");
[[SKPaymentQueue defaultQueue]
finishTransaction:transaction];
break;
default:
break;
}
}
}
////
-(void)unlockFeature
{
_buyButton.enabled = NO;
[_buyButton setTitle:#"Purchased"
forState:UIControlStateDisabled];
[_homeViewController enableLevel2];
}
- (IBAction) restore{
//this is called when the user restores purchases, you should hook this up to a button
[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
}
- (void) paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue
{
NSLog(#"received restored transactions: %lul", queue.transactions.count);
for (SKPaymentTransaction *transaction in queue.transactions)
{
if(SKPaymentTransactionStateRestored){
NSLog(#"Transaction state -> Restored");
//called when the user successfully restores a purchase
[self unlockFeature];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
break;
}
}
}
//// <--
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
_buyButton.enabled = NO;
}
How do i make it work for more than one IAP purchase? The ray wenderlick tutorial shows in a table view, but i don't want a table view, i want custom buttons with a custom background of my own, so this tutorial is great, but i don't know how to make it work with more than one iap. thank you in advance if u know the answer, please comment. i've been struggling over 2 days already.

Answer 1

In .h file add this method.
+ (RageIAPHelper *)sharedInstance;
in implementaion file .m
+ (RageIAPHelper *)sharedInstance {
static dispatch_once_t once;
static RageIAPHelper * sharedInstance;
dispatch_once(&once, ^{
NSSet * productIdentifiers = [NSSet setWithObjects:
#"com.razeware.inapprage.drummerrage",
#"com.razeware.inapprage.itunesconnectrage",
#"com.razeware.inapprage.nightlyrage",
#"com.razeware.inapprage.studylikeaboss",
#"com.razeware.inapprage.updogsadness",
nil];
sharedInstance = [[self alloc] initWithProductIdentifiers:productIdentifiers];
});
return sharedInstance;
}
by this we can get more productIdentifiers.
follow this tutorial Click Here
Hope this will help you.