Java tutorial
/* Copyright (c) 2012 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.appsimobile.appsii.iab; import android.content.Context; import android.os.Bundle; import android.os.RemoteException; import android.text.TextUtils; import org.json.JSONException; import java.util.ArrayList; import java.util.List; /** * A simplified IabHelper that gives only access to the inventory requests */ public class IabInventoryHelper extends BaseIabHelper { /** * Creates an instance. After creation, it will not yet be ready to use. You must perform * setup by calling {@link #startSetup} and wait for setup to complete. This constructor does * not * block and is safe to call from a UI thread. * * @param ctx Your application or Activity context. Needed to bind to the in-app billing * service. */ public IabInventoryHelper(Context ctx) { super(ctx); } public Inventory queryInventory(boolean querySkuDetails, List<String> moreSkus) throws IabException { return queryInventory(querySkuDetails, moreSkus, null); } /** * Queries the inventory. This will query all owned items from the server, as well as * information on additional skus, if specified. This method may block or take long to execute. * Do not call from a UI thread. * * @param querySkuDetails if true, SKU details (price, description, etc) will be queried as well * as purchase information. * @param moreItemSkus additional PRODUCT skus to query information on, regardless of ownership. * Ignored if null or if querySkuDetails is false. * @param moreSubsSkus additional SUBSCRIPTIONS skus to query information on, regardless of * ownership. * Ignored if null or if querySkuDetails is false. * * @throws IabException if a problem occurs while refreshing the inventory. */ public Inventory queryInventory(boolean querySkuDetails, List<String> moreItemSkus, List<String> moreSubsSkus) throws IabException { checkSetupDone("queryInventory"); try { Inventory inv = new Inventory(); int r = queryPurchases(inv, ITEM_TYPE_INAPP); if (r != BILLING_RESPONSE_RESULT_OK) { throw new IabException(r, "Error refreshing inventory (querying owned items)."); } if (querySkuDetails) { r = querySkuDetails(ITEM_TYPE_INAPP, inv, moreItemSkus); if (r != BILLING_RESPONSE_RESULT_OK) { throw new IabException(r, "Error refreshing inventory (querying prices of items)."); } } // if subscriptions are supported, then also query for subscriptions if (mSubscriptionsSupported) { r = queryPurchases(inv, ITEM_TYPE_SUBS); if (r != BILLING_RESPONSE_RESULT_OK) { throw new IabException(r, "Error refreshing inventory (querying owned subscriptions)."); } if (querySkuDetails) { r = querySkuDetails(ITEM_TYPE_SUBS, inv, moreSubsSkus); if (r != BILLING_RESPONSE_RESULT_OK) { throw new IabException(r, "Error refreshing inventory (querying prices of subscriptions)."); } } } return inv; } catch (RemoteException e) { throw new IabException(IABHELPER_REMOTE_EXCEPTION, "Remote exception while refreshing inventory.", e); } catch (JSONException e) { throw new IabException(IABHELPER_BAD_RESPONSE, "Error parsing JSON response while refreshing inventory.", e); } } private int queryPurchases(Inventory inv, String itemType) throws JSONException, RemoteException { // Query purchases logDebug("Querying owned items, item type: " + itemType); logDebug("Package name: " + mContext.getPackageName()); boolean verificationFailed = false; String continueToken = null; do { logDebug("Calling getPurchases with continuation token: " + continueToken); Bundle ownedItems = mService.getPurchases(3, mContext.getPackageName(), itemType, continueToken); int response = getResponseCodeFromBundle(ownedItems); logDebug("Owned items response: " + String.valueOf(response)); if (response != BILLING_RESPONSE_RESULT_OK) { logDebug("getPurchases() failed: " + getResponseDesc(response)); return response; } if (!ownedItems.containsKey(RESPONSE_INAPP_ITEM_LIST) || !ownedItems.containsKey(RESPONSE_INAPP_PURCHASE_DATA_LIST) || !ownedItems.containsKey(RESPONSE_INAPP_SIGNATURE_LIST)) { logError("Bundle returned from getPurchases() doesn't contain required fields."); return IABHELPER_BAD_RESPONSE; } ArrayList<String> ownedSkus = ownedItems.getStringArrayList(RESPONSE_INAPP_ITEM_LIST); ArrayList<String> purchaseDataList = ownedItems.getStringArrayList(RESPONSE_INAPP_PURCHASE_DATA_LIST); ArrayList<String> signatureList = ownedItems.getStringArrayList(RESPONSE_INAPP_SIGNATURE_LIST); for (int i = 0; i < purchaseDataList.size(); ++i) { String purchaseData = purchaseDataList.get(i); String signature = signatureList.get(i); String sku = ownedSkus.get(i); if (Security.verifyPurchase(mSignatureBase64, purchaseData, signature)) { logDebug("Sku is owned: " + sku); Purchase purchase = new Purchase(itemType, purchaseData, signature); if (TextUtils.isEmpty(purchase.getToken())) { logWarn("BUG: empty/null token!"); logDebug("Purchase data: " + purchaseData); } // Record ownership and token inv.addPurchase(purchase); } else { logWarn("Purchase signature verification **FAILED**. Not adding item."); logDebug(" Purchase data: " + purchaseData); logDebug(" Signature: " + signature); verificationFailed = true; } } continueToken = ownedItems.getString(INAPP_CONTINUATION_TOKEN); logDebug("Continuation token: " + continueToken); } while (!TextUtils.isEmpty(continueToken)); return verificationFailed ? IABHELPER_VERIFICATION_FAILED : BILLING_RESPONSE_RESULT_OK; } int querySkuDetails(String itemType, Inventory inv, List<String> moreSkus) throws RemoteException, JSONException { logDebug("Querying SKU details."); ArrayList<String> skuList = new ArrayList<>(); skuList.addAll(inv.getAllOwnedSkus(itemType)); if (moreSkus != null) skuList.addAll(moreSkus); if (skuList.size() == 0) { logDebug("queryPrices: nothing to do because there are no SKUs."); return BILLING_RESPONSE_RESULT_OK; } Bundle querySkus = new Bundle(); querySkus.putStringArrayList(GET_SKU_DETAILS_ITEM_LIST, skuList); Bundle skuDetails = mService.getSkuDetails(3, mContext.getPackageName(), itemType, querySkus); if (!skuDetails.containsKey(RESPONSE_GET_SKU_DETAILS_LIST)) { int response = getResponseCodeFromBundle(skuDetails); if (response != BILLING_RESPONSE_RESULT_OK) { logDebug("getSkuDetails() failed: " + getResponseDesc(response)); return response; } else { logError("getSkuDetails() returned a bundle with neither an error nor a detail " + "list."); return IABHELPER_BAD_RESPONSE; } } ArrayList<String> responseList = skuDetails.getStringArrayList(RESPONSE_GET_SKU_DETAILS_LIST); int N = responseList.size(); for (int i = 0; i < N; i++) { String thisResponse = responseList.get(i); SkuDetails d = new SkuDetails(itemType, thisResponse); logDebug("Got sku details: " + d); inv.addSkuDetails(d); } return BILLING_RESPONSE_RESULT_OK; } }