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.github.jberkel.pay.me.model; import android.text.TextUtils; import org.json.JSONException; import org.json.JSONObject; /** * Represents an in-app billing purchase. * <p/> * See also * {@link com.android.vending.billing.IInAppBillingService#getPurchases(int, String, String, String)} */ public class Purchase { private final String mOrderId; private final String mPackageName; private final String mSku; private final long mPurchaseTime; private final int mPurchaseState; private final String mDeveloperPayload; private final String mToken; private final ItemType mItemType; private final State mState; private final String mSignature; private final String mOriginalJson; /** * @param itemType the item type for this purchase, cannot be null. * @param jsonPurchaseInfo the JSON representation of this purchase * @param signature the signature * @throws JSONException if the purchase cannot be parsed or is invalid. */ public Purchase(ItemType itemType, String jsonPurchaseInfo, String signature) throws JSONException { if (itemType == null) throw new IllegalArgumentException("itemType cannot be null"); mItemType = itemType; final JSONObject json = new JSONObject(jsonPurchaseInfo); mOrderId = json.optString(ORDER_ID); mPackageName = json.optString(PACKAGE_NAME); mSku = json.optString(PRODUCT_ID); mPurchaseTime = json.optLong(PURCHASE_TIME); mPurchaseState = json.optInt(PURCHASE_STATE); mDeveloperPayload = json.optString(DEVELOPER_PAYLOAD); mToken = json.optString(TOKEN, json.optString(PURCHASE_TOKEN)); mOriginalJson = jsonPurchaseInfo; mSignature = signature; mState = State.fromCode(mPurchaseState); if (TextUtils.isEmpty(mSku)) { throw new JSONException("SKU is empty"); } } public ItemType getItemType() { return mItemType; } /** * @return A unique order identifier for the transaction. This corresponds to the Google Wallet Order ID. */ public String getOrderId() { return mOrderId; } /** * * @return The application package from which the purchase originated. */ public String getPackageName() { return mPackageName; } /** * @return The item's product identifier. Every item has a product ID, which you must specify in * the application's product list on the Google Play Developer Console. */ public String getSku() { return mSku; } /** * @return The time the product was purchased, in milliseconds since the epoch (Jan 1, 1970). */ public long getPurchaseTime() { return mPurchaseTime; } /** * @return The purchase state of the order. Possible values are 0 (purchased), 1 (canceled), or 2 (refunded). */ public int getRawState() { return mPurchaseState; } /** * @return The parsed purchase state of the order. */ public State getState() { return mState; } /** * @return A developer-specified string that contains supplemental information about an order. You * can specify a value for this field when you make a getBuyIntent request. */ public String getDeveloperPayload() { return mDeveloperPayload; } /** * @return A token that uniquely identifies a purchase for a given item and user pair. */ public String getToken() { return mToken; } /** * @return the original JSON response, as received from the billing service. */ public String getOriginalJson() { return mOriginalJson; } /** * @return the signature, as received from the billing service. */ public String getSignature() { return mSignature; } @Override public String toString() { return "Purchase(type:" + mItemType + "):" + mOriginalJson; } /** * The purchase state of the order. */ public enum State { PURCHASED(0), CANCELED(1), REFUNDED(2), UNKNOWN(-1); final int code; State(int code) { this.code = code; } public static State fromCode(int code) { for (State s : values()) { if (s.code == code) return s; } return UNKNOWN; } } // fields used in service JSON response private static final String PACKAGE_NAME = "packageName"; private static final String PRODUCT_ID = "productId"; private static final String PURCHASE_TIME = "purchaseTime"; private static final String PURCHASE_STATE = "purchaseState"; private static final String DEVELOPER_PAYLOAD = "developerPayload"; private static final String PURCHASE_TOKEN = "purchaseToken"; private static final String TOKEN = "token"; private static final String ORDER_ID = "orderId"; }