android - 知道何时取消订阅-Play Billing 1.0

我正在使用此tuto将Play Billing Library集成到我的应用程序中：http://www.androidrey.com/implement-play-billing-library-in-android-application/，并且一切正常……很好，根本没有。我有一个问题要知道何时取消订阅，我测试了所有方法以查找resultCode或一些可以了解此状态的方法，但是有一个我无法实现的方法。这可能是问题吗？

类：BillingManager.java

public void queryPurchases() {
    Runnable queryToExecute = new Runnable() {
        @Override
        public void run() {
            long time = System.currentTimeMillis();
            Purchase.PurchasesResult purchasesResult = billingClient.queryPurchases(BillingClient.SkuType.INAPP);
            if (areSubscriptionsSupported()) {
                Purchase.PurchasesResult subscriptionResult
                        = billingClient.queryPurchases(BillingClient.SkuType.SUBS);
                System.out.println("QUERY 0");
                if (subscriptionResult.getResponseCode() == BillingClient.BillingResponse.OK) {
                    purchasesResult.getPurchasesList().addAll(
                            subscriptionResult.getPurchasesList());
                    System.out.println("QUERY 1");
                } else {
                    // Handle any error response codes.
                }
            } else if (purchasesResult.getResponseCode() == BillingClient.BillingResponse.OK) {
                // Skip subscription purchases query as they are not supported.
                System.out.println("QUERY 2");
            } else {
                // Handle any other error response codes.
                System.out.println("QUERY 3");
            }
            onQueryPurchasesFinished(purchasesResult);
            System.out.println("QUERY RESULT "+ purchasesResult);
        }
    };

    executeServiceRequest(queryToExecute);
}

private void onQueryPurchasesFinished(Purchase.PurchasesResult result) {
    // Have we been disposed of in the meantime? If so, or bad result code, then quit
    if (billingClient == null || result.getResponseCode() != BillingClient.BillingResponse.OK) {
        Log.w(TAG, "Billing client was null or result code (" + result.getResponseCode()
                + ") was bad – quitting");
        return;
    }

    Log.d(TAG, "Query inventory was successful.");

    // Update the UI and purchases inventory with new list of purchases
    // mPurchases.clear();
    onPurchasesUpdated(BillingClient.BillingResponse.OK, result.getPurchasesList());
}

public boolean areSubscriptionsSupported() {
    int responseCode = billingClient.isFeatureSupported(BillingClient.FeatureType.SUBSCRIPTIONS);
    if (responseCode != BillingClient.BillingResponse.OK) {
        Log.w(TAG, "areSubscriptionsSupported() got an error response: " + responseCode);
    }
    return responseCode == BillingClient.BillingResponse.OK;
}

应该在这里调用它：MyBillingUpdateListener.java

public class MyBillingUpdateListener implements BillingManager.BillingUpdatesListener {
//final BillingManager billingManager = new BillingManager(,this );

@Override
public void onBillingClientSetupFinished() {
    //billingManager.queryPurchases(); THIS IS WHAT I COULD NOT IMPLEMENT
}

欢迎任何帮助，谢谢！

最佳答案

Play Billing 1.0不再具有购买状态的概念，因此当前无法使用Play Billing库获取此信息。
我的理解是queryPurchases应该只返回实际的有效购买。但是，它从寿命长的缓存中获取信息，并且您无法手动更新它。

onBillingClientSetupFinished完全无关。

这是一个关于该主题的积极讨论：https://github.com/googlesamples/android-play-billing/issues/122

关于android - 知道何时取消订阅-Play Billing 1.0，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/49637797/