Android 应用内计费，inventory.getPurchase在与付款不同的设备上为空

在我的应用程序中，用户可以购买广告删除，我保留此项目（无消费）。所以我在我的主要活动中有一个片段，用于检查用户是否购买了该项目

public class BillingInventoryFragment extends Fragment {
// Helper billing object
private IabHelper mHelper;


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setRetainInstance(true);

    initialiseBilling();
}


private void initialiseBilling() {
    if (mHelper != null) {
        return;
    }

    // Create the helper, passing it our context and the public key to verify signatures with
    mHelper = new IabHelper(getActivity(), BillingUtils.getApplicationKey());

    // Enable debug logging (for a production application, you should set this to false).
    mHelper.enableDebugLogging(true);

    // Start setup. This is asynchronous and the specified listener will be called once setup completes.
    mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
        @Override
        public void onIabSetupFinished(IabResult result) {
            // Have we been disposed of in the meantime? If so, quit.
            if (mHelper == null) {
                return;
            }

            // Something went wrong
            if (!result.isSuccess()) {
                Log.e(getActivity().getApplicationInfo().name, "Problem setting up in-app billing: " + result.getMessage());
                return;
            }

            // IAB is fully set up. Now, let's get an inventory of stuff we own.
            mHelper.queryInventoryAsync(iabInventoryListener());
        }
    });
}


/**
 * Listener that's called when we finish querying the items and subscriptions we own
 */
private IabHelper.QueryInventoryFinishedListener iabInventoryListener() {
    return new IabHelper.QueryInventoryFinishedListener() {
        @Override
        public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
            // Have we been disposed of in the meantime? If so, quit.
            if (mHelper == null) {
                return;
            }

            // Something went wrong
            if (!result.isSuccess()) {
                Log.d(TAG, String.format("result not success, result = %s", result) );
                return;
            }

            // Do your checks here...

            // Do we have the premium upgrade?
            Purchase purchasePro = inventory.getPurchase(BillingUtils.SKU_PRO); // Where BillingUtils.SKU_PRO is your product ID (eg. permanent.ad_removal)
            Log.d(TAG, String.format("Purchase pro = %s", purchasePro));
            BillingUtils.isPro = (purchasePro != null && BillingUtils.verifyDeveloperPayload(purchasePro));

            // After checking inventory, re-jig stuff which the user can access now
            // that we've determined what they've purchased
            BillingUtils.initialiseStuff();
        }
    };
}

/**
 * Very important!
 */
@Override
public void onDestroy() {
    super.onDestroy();

    if (mHelper != null) {
        mHelper.dispose();
        mHelper = null;
    }
}

}

一切都在一台设备上工作，但当我在第二台设备上测试时：

inventory.getPurchase(BillingUtils.SKU_PRO);

返回null

---

当我再次尝试在第二台设备上购买物品时，我无法购买，因为我拥有它。

如果您确定您成功购买了该物品。这可能与使用的

Gmail有关。

---

你应该在这两台设备上使用相同的

Gmail

，因为

Google

正在使用设备上注册的

Gmail

识别其用户。

是的，我使用相同的Gmail帐户。这就是为什么当我再次尝试在第二台设备上购买物品时，我不能，因为我已经拥有它，谷歌也知道它。这是

inAppBilling

V3查询购买物品的官方方式，我在订阅式购买中面临同样的问题。你是怎么解决的？你有解决办法吗？你有解决办法吗？同样的问题。你找到解决办法了吗？同样的问题。BillingClient.queryPurchases（）的文档说明：获取在应用程序中购买的所有物品的购买详细信息。此方法使用Google Play Store应用程序的缓存，而无需启动网络请求。因此，这只是设备上的一个脱机呼叫。。