[SOLVED] Android Google Pay Billing - Response 4 : ITEM

I am trying to integrate Google Play Billing.

Here is my onCreate :

private final static String     TAG = "MainActivity" ;
private final static String     ITEM_SKU_SUBSCRIBE = "sub_example" ;
private final static String     PREF_FILE = "shared_prefs" ;
private final static String     SUBSCRIBE_KEY = "subscribe" ;

private BillingClient                   billingClient ;

private TextView                        premiumContent ;
private TextView                        subscriptionStatus ;
private Button                          purchaseButton;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    premiumContent = findViewById(R.id.premium_content) ;
    subscriptionStatus = findViewById(R.id.subscription_status) ;
    purchaseButton = findViewById(R.id.button) ;

    billingClient = BillingClient.newBuilder(this)
            .enablePendingPurchases()
            .setListener(this)
            .build() ;
    billingClient.startConnection(new BillingClientStateListener() {
        @Override
        public void onBillingSetupFinished(BillingResult billingResult) {
            Log.i(TAG, "onBillingSetupFinished ; billing response code == " + billingResult.getResponseCode());
            if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
                Purchase.PurchasesResult queryPurchase = billingClient.queryPurchases(SUBS);
                List<Purchase> queryPurchases = queryPurchase.getPurchasesList();
                if (queryPurchases != null && queryPurchases.size() > 0) {
                    handlePurchases(queryPurchases);
                } else {
                    saveSubscribeValueToPref(false);
                }
            } else {
                Log.e(TAG, "ELSE : " + billingResult.getDebugMessage()) ;
            }
        }

        @Override
        public void onBillingServiceDisconnected() {
            Toast.makeText(getApplicationContext(), "Service disconnected",
                    Toast.LENGTH_SHORT).show() ;
        }
    });

    if (getSubscribeValueFromPref()) {
        purchaseButton.setVisibility(View.GONE);
        premiumContent.setVisibility(View.VISIBLE);
        subscriptionStatus.setText("Subscription Status : Subscribed");
    } else {
        premiumContent.setVisibility(View.GONE);
        purchaseButton.setVisibility(View.VISIBLE);
        subscriptionStatus.setText("Subscription Status : Not Subscribed");
    }

    purchaseButton.setText("Load products");
    purchaseButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            subscribe();
        }
    });
}

When I click on the purchaseButton, I call subscribe function.

Basically it just call a function initiatePurchase if billingClient.isReady() returns true, and initialize billingClient in the other case.

Here is my initiatePurchase function :

private void        initiatePurchase() {
    List<String>                    skuList = new ArrayList<>() ;
    SkuDetailsParams.Builder        params = SkuDetailsParams.newBuilder() ;

    skuList.add(ITEM_SKU_SUBSCRIBE);
    params.setSkusList(skuList).setType(SUBS);
    BillingResult   billingResult = billingClient.isFeatureSupported(BillingClient.FeatureType.SUBSCRIPTIONS) ;
    Log.i(TAG, "Billing response code == " + billingResult.getResponseCode()) ;
    if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
        Log.i(TAG, "Billing response code is OK");
        billingClient.querySkuDetailsAsync(params.build(),
                new SkuDetailsResponseListener() {
                    @Override
                    public void onSkuDetailsResponse(BillingResult billingResult, List<SkuDetails> skuDetailsList) {
                        Log.i(TAG, "onSkuDetailsResponse ; billing result response code == " + billingResult.getResponseCode());
                        if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
                            Log.i(TAG, "Billing response code OK") ;
                            if (skuDetailsList != null) {
                                for (int i = 0 ; i < skuDetailsList.size() ; i++) {
                                    Log.i(TAG, "Loop INDEX " + i + " ; SkuDetails == " + skuDetailsList.get(i).getTitle()) ;
                                }
                            }
                            if (skuDetailsList != null && skuDetailsList.size() > 0) {
                                Log.i(TAG, "skuDetailsList is not null or empty");
                                BillingFlowParams flowParams = BillingFlowParams.newBuilder()
                                        .setSkuDetails(skuDetailsList.get(0))
                                        .build();
                                Log.i(TAG, "Flow Params = " + flowParams.getAccountId() + " | " + flowParams.getSku());
                                BillingResult billingFlowResult = billingClient
                                        .launchBillingFlow(MainActivity.this, flowParams);
                                Log.i(TAG, "billingFlowResult == " + billingFlowResult.getResponseCode() + " | " + billingFlowResult.getDebugMessage()) ;
                            } else {
                                Toast.makeText(getApplicationContext(),
                                        "Item not found", Toast.LENGTH_SHORT).show();
                            }
                        } else {
                            Toast.makeText(getApplicationContext(),
                                    "Error - " + billingResult.getDebugMessage(),
                                    Toast.LENGTH_SHORT).show();
                        }
                    }
                });
    } else {
        Toast.makeText(getApplicationContext(),
                "Sorry, subscription not supported. Please update Play Store",
                Toast.LENGTH_SHORT).show();
    }
}

It seems to go to onSkuDetailsResponse, with a billing response code OK.

I loop in the skuDetailsList and I get sub_example, which is my ITEM_SKU_SUBSCRIBE (and the one on my Play Store Console) ; so my skuDetailsList is not null or empty.

But then, here is my log output :

I/MainActivity: Billing response code == 0
    Billing response code is OK
I/MainActivity: onSkuDetailsResponse ; billing result response code == 0
    Billing response code OK
    Loop INDEX 0 ; SkuDetails == Monthly sub (Test Billing)
    skuDetailsList is not null or empty
I/MainActivity: Flow Params = null | sub_example
I/MainActivity: billingFlowResult == 0 | null
W/ActivityThread: handleWindowVisibility: no activity for token android.os.BinderProxy@cb159f0

When I click on the "OK" button, interesting logs appears :

W/ProxyBillingActivity: Activity finished with resultCode 0 and billing's responseCode: 4
W/BillingHelper: Couldn't find purchase lists, trying to find single data.
W/BillingHelper: Received a bad purchase data.
    Couldn't find single purchase data as well.

I looked up in BillingClient.class and I found int ITEM_UNAVAILABLE = 4; in the interface BillingResponseCode

I am compiling and launching this app in signed release configuration
An older version of the app is published in alpha on Google Play (but with the same version code and version name)
My google play account is in the testers list, it's a @gmail address I created today for this (my other google account was not with a @gmail address - well, did not work either)
I created this subscription yesterday on the Google Play Console
My app is published (not in reviewing) since yesterday in alpha.
I followed this tutorial : https://programtown.com/how-to-make-in-app-purchase-subscription-in-android-using-google-play-billing-library/

Thanks

Android Google Pay Billing - Response 4 : ITEM_UNAVAILABLE