New gradle folder structure for API Demo

OpenPGP-Keychain-API-Demo/src/main/java/org/openintents/openpgp/IOpenPgpCallback.aidl

@@ -0,0 +1,45 @@
+/*
+ * 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.openpgp;
+
+import org.openintents.openpgp.OpenPgpData;
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.openintents.openpgp.OpenPgpError;
+
+interface IOpenPgpCallback {
+    
+    /**
+     * onSuccess returns on successful OpenPGP operations.
+     * 
+     * @param output
+     *            contains resulting output (decrypted content (when input was encrypted)
+     *            or content without signature (when input was signed-only))
+     * @param signatureResult
+     *            signatureResult is only non-null if decryptAndVerify() was called and the content
+     *            was encrypted or signed-and-encrypted.
+     */
+    oneway void onSuccess(in OpenPgpData output, in OpenPgpSignatureResult signatureResult);
+
+    /**
+     * onError returns on errors or when allowUserInteraction was set to false, but user interaction
+     * was required execute an OpenPGP operation.
+     * 
+     * @param error
+     *            See OpenPgpError class for more information.
+     */
+    oneway void onError(in OpenPgpError error);
+}