Better API demo, open activity from service, discover crypto provider with packagemanager instead of register intent

OpenPGP-Keychain-API-Demo/src/org/openintents/crypto/CryptoError.aidl

@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * 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 org.openintents.crypto;
+
+// Declare CryptoError so AIDL can find it and knows that it implements the parcelable protocol.
+parcelable CryptoError;