AbstractBillingObserver.java

/*   Copyright 2011 Robot Media SL (http://www.robotmedia.net)
 *
 *   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 net.robotmedia.billing.helper;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.preference.PreferenceManager;
import net.robotmedia.billing.BillingController;
import net.robotmedia.billing.IBillingObserver;

/**
 * Abstract subclass of IBillingObserver that provides default implementations
 * for {@link IBillingObserver#onPurchaseIntent(String, PendingIntent)} and
 * {@link IBillingObserver#onTransactionsRestored()}.
 */
public abstract class AbstractBillingObserver implements IBillingObserver {

    protected static final String KEY_TRANSACTIONS_RESTORED = "net.robotmedia.billing.transactionsRestored";

    protected Activity activity;

    public AbstractBillingObserver(Activity activity) {
        this.activity = activity;
    }

    public boolean isTransactionsRestored() {
        final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
        return preferences.getBoolean(KEY_TRANSACTIONS_RESTORED, false);
    }

    /**
     * Called after requesting the purchase of the specified item. The default
     * implementation simply starts the pending intent.
     *
     * @param itemId         id of the item whose purchase was requested.
     * @param purchaseIntent a purchase pending intent for the specified item.
     */
    public void onPurchaseIntent(String itemId, PendingIntent purchaseIntent) {
        BillingController.startPurchaseIntent(activity, purchaseIntent, null);
    }

    public void onTransactionsRestored() {
        final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
        final Editor editor = preferences.edit();
        editor.putBoolean(KEY_TRANSACTIONS_RESTORED, true);
        editor.commit();
    }

}