ios应用内购买相关崩溃

我有一个非消费品可以通过应用内购买从我的应用中删除广告。 它有时工作得很好，如果我关闭应用程序并再次打开，我的代码将在默认情况下检测是否购买了PRO版本。 问题是，在购买时，我想从选项卡栏中删除“升级到专业版”按钮，这段代码会使应用程序崩溃。以下是处理应用内购买的控制器：

#import "RemoveAdsViewController.h"
#import <StoreKit/StoreKit.h>
#import "Flurry.h"
#define kRemoveAdsProductIdentifier @"AiutoPro"

@interface RemoveAdsViewController ()

@end

@implementation RemoveAdsViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationItem.title = NSLocalizedStringFromTable(@"aiutopro", @"i18n", @"");
    self.buyLabel.text = NSLocalizedStringFromTable(@"buyText", @"i18n", @"");
    self.recoverLabel.text = NSLocalizedStringFromTable(@"recoverText", @"i18n", @"");
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma Actions
- (IBAction)buyNow:(id)sender {
    NSLog(@"User requests to remove ads");

    if ([SKPaymentQueue canMakePayments]) {
        NSLog(@"User can make payments");

        SKProductsRequest *productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:[NSSet setWithObject:kRemoveAdsProductIdentifier]];
        productsRequest.delegate = self;
        [productsRequest start];
    }
    else {
        NSLog(@"User cannot make payments due to parental controls");
    }
}

- (IBAction)alreadyBought:(id)sender {
    [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
    [[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
}

- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
    SKProduct *validProduct = nil;
    NSUInteger count = [response.products count];

    if ([response.invalidProductIdentifiers count] > 0) {
        NSLog(@"Invalid Product Identifier");
    }

    if (count > 0) {
        validProduct = [response.products objectAtIndex:0];
        NSLog(@"Products Available!");
        [self purchase:validProduct];
    }
    else {
        NSLog(@"The product id was valid, but it has no products available");
    }
}

- (void)purchase:(SKProduct *)product {
    SKPayment *payment = [SKPayment paymentWithProduct:product];
    [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
    [[SKPaymentQueue defaultQueue] addPayment:payment];
}

- (void)paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue {
    NSLog(@"received restored transactions: %lu", (unsigned long)queue.transactions.count);
    for (SKPaymentTransaction *transaction in queue.transactions) {
        if (SKPaymentTransactionStateRestored) {
            NSLog(@"Transaction state -> Restored");
            [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
            [self doRemoveAds];
            break;
        }
    }
}

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
    for (SKPaymentTransaction *transaction in transactions) {
        switch (transaction.transactionState) {
            case SKPaymentTransactionStatePurchasing:
                NSLog(@"Transaction state -> Purchasing");
                break;

            case SKPaymentTransactionStatePurchased:
                [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
                [self doRemoveAds];
                [Flurry logEvent:@"Purchase"];
                NSLog(@"Transaction state -> Purchased");
                break;

            case SKPaymentTransactionStateRestored:
                [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
                NSLog(@"Transaction state -> Restored");
                [self doRemoveAds];
                [Flurry logEvent:@"Restore"];
                break;

            case SKPaymentTransactionStateFailed:
                if (transaction.error.code != SKErrorPaymentCancelled) {
                    NSLog(@"Transaction state -> Cancelled");
                }
                [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
                break;
        }
    }
}

- (void)doRemoveAds {
    // Persist to UserDefaults
    [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"areAdsRemoved"];
    [[NSUserDefaults standardUserDefaults] synchronize];

    // Remove upgrade tabbar button
    NSMutableArray* newArray = [NSMutableArray arrayWithArray:self.tabBarController.viewControllers];
    [newArray removeLastObject];

    [self.tabBarController setViewControllers:newArray animated:YES];
}

@end

想法？

你需要把

[[SKPaymentQueue defaultQueue] removeTransactionObserver:self];

---

在dealoc方法中。这将告诉SKPaymentQueue，RemoveAdsViewController在解除分配后将不会侦听任何事务。

@Raymond我已将您的答案添加到我的代码中，但应用程序仍会崩溃。请给我一些建议。

[[SKPaymentQueue defaultQueue] removeTransactionObserver:self];