IabHelper:检查订阅是否自动更新

Question

我有一个带有订阅的Android应用程序，我使用IabHelper来查询用户是否有活动订阅。现在我也需要知道这个订阅是否是自动更新的。

我查询订阅状态如下：

private boolean userIsSubscribed() {
    ArrayList<String> skuList = new ArrayList<>();
    skuList.add(PREMIUM_SUBSCRIPTION);
    // Check the subscription status
    try {
        Inventory inventory = iabHelper.queryInventory(true, null, skuList);
        Purchase purchase = inventory.getPurchase(PREMIUM_SUBSCRIPTION);
        // Is the user subscribed?
        if (purchase != null && purchase.getPurchaseState() == 0) {
            // User is subscribed
            Log.d(TAG, "Subscribed.");
            // TODO check if subscription is auto-renewing
            return true;
        } else {
            // User is not subscribed
            Log.d(TAG, "Not subscribed.");
            return false;
        }
    } catch (IabException | NullPointerException e) {
        // There was an error with the subscription process
        Log.e(TAG, e.getMessage(), e);
        return false;
    } catch (IllegalStateException e) {
        // IabHelper not set up
        Log.e(TAG, e.getMessage(), e);
        return false;
    }
}

不幸的是，Purchase对象没有请求autoRenewal字段的方法。有什么别的办法能让我得到这个信息吗？

Answer 1

调用Purchase#isAutoRenewing方法。如果缺少此方法，则可能需要更新引用IAB文件：

    if (purchase != null && purchase.getPurchaseState() == 0) {
        // User is subscribed
        Log.d(TAG, "Subscribed.");
        if (purchase.isAutoRenewing()){
            return true;
        }

https://github.com/googlesamples/android-play-billing/blob/master/TrivialDrive/app/src/main/java/com/example/android/trivialdrivesample/util/Purchase.java