恢复已经在iPhone上购买了应用内购买？ [英] Restore already bought in-app-purchases on iPhone?

问题描述

我到目前为止：重新安装后，用户需要点击购买功能，然后他会因为0.99美元的问题而感到害怕，然后必须登录才会被告知该功能已经购买并且他免费获得。

I got so far: After a reinstall, a user needs to click "buy feature", then he gets scared with the $0.99 question, then has to login and then gets told the feature is already bought and he gets it for free.

我知道苹果是一种宗教，用户是坚定的信徒，但是不是更好的方法吗？ :-)我想要的是检查功能而不实际购买它。让用户输入他的帐户信息似乎是必要的，也许买一个0.00美元的功能？或者是否有某种方法可以做到这一点？

I know apple is a religion and users are strong believers, but isn't there a better way? :-) What I want is to check for the feature without actually buying it. Letting the user enter his account info seems to be neccessary, maybe buy a $0.00 feature? or is there a method somewhere that does this?

我正在使用MKStoreKit进行整个应用内购买，但任何解决方案都会很棒。

I'm using MKStoreKit for the whole In-App-Purchase, but any solution would be great.

更新

thanx到darvids0n，你的方法解决了我的问题！这是其他人尝试相同的工作代码：

thanx to darvids0n, your method solved my problem! here's some working code for others trying the same:

- (void)removePreviousPurchases { //just for sandbox testing
    [[MKStoreManager sharedManager] removeAllKeychainData];
}

- (void)restorePreviousPurchases { //needs account info to be entered
    if([SKPaymentQueue canMakePayments]) {
        [[MKStoreManager sharedManager] restorePreviousTransactionsOnComplete:^(void) {
             NSLog(@"Restored.");
             /* update views, etc. */
        }
        onError:^(NSError *error) {
            NSLog(@"Restore failed: %@", [error localizedDescription]);
            /* update views, etc. */
        }];
    }
    else
    {
        NSLog(@"Parental control enabled");
        /* show parental control warning */
    }
}

推荐答案

如果0.99美元的商品是非消费品，那么你应该提供一个恢复购买按钮（或类似的）按钮

If the $0.99 item is non-consumable, then you should provide a "Restore Purchases" button (or similar) which calls

[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];

假设您已经添加了一个事务观察器，并实现了协议，包括处理已恢复交易的案例（州 SKPaymentTransactionStateRestored ）这将有效。

Assuming you've added a transaction observer already, and implemented the protocol including a case to handle a restored transaction (with state SKPaymentTransactionStateRestored) this will work.

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