Added default billing observer implementation

Author: Robot Media

AndroidBillingLibrary/src/net/robotmedia/billing/AbstractBillingActivity.java

@@ -0,0 +1,109 @@
+/*   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 net.robotmedia.billing.BillingController;
+import net.robotmedia.billing.BillingController.BillingStatus;
+import net.robotmedia.billing.model.Transaction.PurchaseState;
+import net.robotmedia.billing.request.ResponseCode;
+import android.app.Activity;
+
+public abstract class AbstractBillingActivity extends Activity implements BillingController.IConfiguration {
+
+	protected AbstractBillingObserver mBillingObserver;
+
+	/**
+	 * Returns the billing status. If it's currently unknown, requests to check
+	 * if billing is supported and
+	 * {@link AbstractBillingActivity#onBillingChecked(boolean)} should be
+	 * called later with the result.
+	 * 
+	 * @return the current billing status (unknown, supported or unsupported).
+	 * @see AbstractBillingActivity#onBillingChecked(boolean)
+	 */
+	public BillingStatus checkBillingSupported() {
+		return BillingController.checkBillingSupported(this);
+	}
+
+	public abstract void onBillingChecked(boolean supported);
+
+	@Override
+	protected void onCreate(android.os.Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+		mBillingObserver = new AbstractBillingObserver(this) {
+
+			@Override
+			public void onBillingChecked(boolean supported) {
+				AbstractBillingActivity.this.onBillingChecked(supported);
+			}
+
+			@Override
+			public void onPurchaseStateChanged(String itemId, PurchaseState state) {
+				AbstractBillingActivity.this.onPurchaseStateChanged(itemId, state);
+			}
+
+			@Override
+			public void onRequestPurchaseResponse(String itemId, ResponseCode response) {
+				AbstractBillingActivity.this.onRequestPurchaseResponse(itemId, response);
+			}
+		};
+		BillingController.registerObserver(mBillingObserver);
+		BillingController.setConfiguration(this); // This activity will provide
+		// the public key and salt
+		this.checkBillingSupported();
+		if (!mBillingObserver.isTransactionsRestored()) {
+			BillingController.restoreTransactions(this);
+		}
+	}
+
+	@Override
+	protected void onDestroy() {
+		super.onDestroy();
+		BillingController.unregisterObserver(mBillingObserver); // Avoid
+																// receiving
+		// notifications after
+		// destroy
+		BillingController.setConfiguration(null);
+	}
+
+	public abstract void onPurchaseStateChanged(String itemId, PurchaseState state);;
+
+	public abstract void onRequestPurchaseResponse(String itemId, ResponseCode response);
+
+	/**
+	 * Requests the purchase of the specified item. The transaction will not be
+	 * confirmed automatically; such confirmation could be handled in
+	 * {@link AbstractBillingActivity#onPurchaseExecuted(String)}. If automatic
+	 * confirmation is preferred use
+	 * {@link BillingController#requestPurchase(android.content.Context, String, boolean)}
+	 * instead.
+	 * 
+	 * @param itemId
+	 *            id of the item to be purchased.
+	 */
+	public void requestPurchase(String itemId) {
+		BillingController.requestPurchase(this, itemId);
+	}
+
+	/**
+	 * Requests to restore all transactions.
+	 */
+	public void restoreTransactions() {
+		BillingController.restoreTransactions(this);
+	}
+
+}

AndroidBillingLibrary/src/net/robotmedia/billing/helper/AbstractBillingActivity.java

@@ -0,0 +1,69 @@
+/*   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.
+	 */
+	@Override
+	public void onPurchaseIntent(String itemId, PendingIntent purchaseIntent) {
+		BillingController.startPurchaseIntent(activity, purchaseIntent, null);
+	}
+
+	@Override
+	public void onTransactionsRestored() {
+		final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
+		final Editor editor = preferences.edit();
+		editor.putBoolean(KEY_TRANSACTIONS_RESTORED, true);
+		editor.commit();
+	}
+
+}

AndroidBillingLibrary/src/net/robotmedia/billing/helper/AbstractBillingObserver.java

@@ -1,3 +1,18 @@
+/*   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.security;
 
 import java.security.InvalidKeyException;

AndroidBillingLibrary/src/net/robotmedia/billing/security/DefaultSignatureValidator.java

@@ -1,3 +1,18 @@
+/*   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.security;
 
 public interface ISignatureValidator {