Restructuring for new API library

15 files changed, 964 insertions, 0 deletions

diff --git a/OpenPGP-Keychain-API/example-app/build.gradle b/OpenPGP-Keychain-API/example-app/build.gradle
new file mode 100644
index 000000000..99a09f094
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/build.gradle
@@ -0,0 +1,59 @@
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.8.0'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    compile 'com.android.support:support-v4:19.0.1'
+    compile project(':libraries:keychain-api-library')
+}
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    defaultConfig {
+        minSdkVersion 8
+        targetSdkVersion 19
+    }
+
+    /*
+     * To sign release build, create file gradle.properties in ~/.gradle/ with this content:
+     *
+     * signingStoreLocation=/home/key.store
+     * signingStorePassword=xxx
+     * signingKeyAlias=alias
+     * signingKeyPassword=xxx
+     */
+    if (project.hasProperty('signingStoreLocation') &&
+            project.hasProperty('signingStorePassword') &&
+            project.hasProperty('signingKeyAlias') &&
+            project.hasProperty('signingKeyPassword')) {
+        println "Found sign properties in gradle.properties! Signing build…"
+        
+        signingConfigs {
+            release {
+                storeFile file(signingStoreLocation)
+                storePassword signingStorePassword
+                keyAlias signingKeyAlias
+                keyPassword signingKeyPassword
+            }
+        }
+
+        buildTypes.release.signingConfig = signingConfigs.release
+    } else {
+        buildTypes.release.signingConfig = null
+    }
+    
+    // Do not abort build if lint finds errors
+    lintOptions {
+        abortOnError false
+    }
+}
diff --git a/OpenPGP-Keychain-API/example-app/ic_launcher-web.png b/OpenPGP-Keychain-API/example-app/ic_launcher-web.png
new file mode 100644
index 000000000..ae4cd0976
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/ic_launcher-web.png
diff --git a/OpenPGP-Keychain-API/example-app/src/main/AndroidManifest.xml b/OpenPGP-Keychain-API/example-app/src/main/AndroidManifest.xml
new file mode 100644
index 000000000..8b8c43776
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/AndroidManifest.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="org.sufficientlysecure.keychain.demo"
+    android:versionCode="2"
+    android:versionName="1.1" >
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="19" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="OpenPGP Keychain API Demo" >
+        <activity
+            android:name=".BaseActivity"
+            android:label="OpenPGP Keychain API Demo" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".OpenPgpProviderActivity"
+            android:label="OpenPGP Provider"
+            android:windowSoftInputMode="stateHidden" />
+        <activity
+            android:name=".AidlDemoActivity2"
+            android:label="Aidl Demo (ACCESS_KEYS permission)"
+            android:windowSoftInputMode="stateHidden" />
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/AidlDemoActivity2.java b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/AidlDemoActivity2.java
new file mode 100644
index 000000000..b6e211955
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/AidlDemoActivity2.java
@@ -0,0 +1,168 @@
+///*
+// * Copyright (C) 2012 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.sufficientlysecure.keychain.demo;
+//
+//import java.util.ArrayList;
+//import java.util.List;
+//
+//import org.sufficientlysecure.keychain.demo.R;
+//import org.sufficientlysecure.keychain.integration.KeychainData;
+//import org.sufficientlysecure.keychain.integration.KeychainIntentHelper;
+//import org.sufficientlysecure.keychain.service.IKeychainKeyService;
+//import org.sufficientlysecure.keychain.service.handler.IKeychainGetKeyringsHandler;
+//
+//import android.annotation.SuppressLint;
+//import android.app.Activity;
+//import android.app.AlertDialog;
+//import android.content.ComponentName;
+//import android.content.Context;
+//import android.content.Intent;
+//import android.content.ServiceConnection;
+//import android.os.Bundle;
+//import android.os.IBinder;
+//import android.os.RemoteException;
+//import android.util.Base64;
+//import android.view.View;
+//import android.widget.TextView;
+//
+//public class AidlDemoActivity2 extends Activity {
+//    Activity mActivity;
+//
+//    TextView mKeyringsTextView;
+//
+//    KeychainIntentHelper mKeychainIntentHelper;
+//    KeychainData mKeychainData;
+//
+//    byte[] keysBytes;
+//    ArrayList<String> keysStrings;
+//
+//    private IKeychainKeyService service = null;
+//    private ServiceConnection svcConn = new ServiceConnection() {
+//        public void onServiceConnected(ComponentName className, IBinder binder) {
+//            service = IKeychainKeyService.Stub.asInterface(binder);
+//        }
+//
+//        public void onServiceDisconnected(ComponentName className) {
+//            service = null;
+//        }
+//    };
+//
+//    @Override
+//    public void onCreate(Bundle icicle) {
+//        super.onCreate(icicle);
+//        setContentView(R.layout.aidl_demo2);
+//
+//        mActivity = this;
+//
+//        mKeyringsTextView = (TextView) findViewById(R.id.aidl_demo_keyrings);
+//
+//        mKeychainIntentHelper = new KeychainIntentHelper(mActivity);
+//        mKeychainData = new KeychainData();
+//
+//        bindService(new Intent(IKeychainKeyService.class.getName()), svcConn,
+//                Context.BIND_AUTO_CREATE);
+//    }
+//
+//    public void getKeyringsStringsOnClick(View view) {
+//        try {
+//            service.getPublicKeyRings(mKeychainData.getPublicKeys(), true, getKeyringsHandler);
+//        } catch (RemoteException e) {
+//            exceptionImplementation(-1, e.toString());
+//        }
+//    }
+//
+//    public void getKeyringsBytesOnClick(View view) {
+//        try {
+//            service.getPublicKeyRings(mKeychainData.getPublicKeys(), false, getKeyringsHandler);
+//        } catch (RemoteException e) {
+//            exceptionImplementation(-1, e.toString());
+//        }
+//    }
+//
+//    @SuppressLint("NewApi")
+//    private void updateView() {
+//        if (keysBytes != null) {
+//            mKeyringsTextView.setText(Base64.encodeToString(keysBytes, Base64.DEFAULT));
+//        } else if (keysStrings != null) {
+//            mKeyringsTextView.setText("");
+//            for (String output : keysStrings) {
+//                mKeyringsTextView.append(output);
+//            }
+//        }
+//    }
+//
+//    @Override
+//    public void onDestroy() {
+//        super.onDestroy();
+//
+//        unbindService(svcConn);
+//    }
+//
+//    private void exceptionImplementation(int exceptionId, String error) {
+//        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+//        builder.setTitle("Exception!").setMessage(error).setPositiveButton("OK", null).show();
+//    }
+//
+//    private final IKeychainGetKeyringsHandler.Stub getKeyringsHandler = new IKeychainGetKeyringsHandler.Stub() {
+//
+//        @Override
+//        public void onException(final int exceptionId, final String message) throws RemoteException {
+//            runOnUiThread(new Runnable() {
+//                public void run() {
+//                    exceptionImplementation(exceptionId, message);
+//                }
+//            });
+//        }
+//
+//        @Override
+//        public void onSuccess(final byte[] outputBytes, final List<String> outputStrings)
+//                throws RemoteException {
+//            runOnUiThread(new Runnable() {
+//                public void run() {
+//                    if (outputBytes != null) {
+//                        keysBytes = outputBytes;
+//                        keysStrings = null;
+//                    } else if (outputStrings != null) {
+//                        keysBytes = null;
+//                        keysStrings = (ArrayList<String>) outputStrings;
+//                    }
+//                    updateView();
+//                }
+//            });
+//
+//        }
+//
+//    };
+//
+//    public void selectEncryptionKeysOnClick(View view) {
+//        mKeychainIntentHelper.selectPublicKeys("user@example.com");
+//    }
+//
+//    @Override
+//    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+//        // this updates the mKeychainData object to the result of the methods
+//        boolean result = mKeychainIntentHelper.onActivityResult(requestCode, resultCode, data,
+//                mKeychainData);
+//        if (result) {
+//            updateView();
+//        }
+//
+//        // continue with other activity results
+//        super.onActivityResult(requestCode, resultCode, data);
+//    }
+//
+//}
diff --git a/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/BaseActivity.java b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/BaseActivity.java
new file mode 100644
index 000000000..5b286f208
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/BaseActivity.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2012 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.sufficientlysecure.keychain.demo;
+
+import org.sufficientlysecure.keychain.demo.R;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceClickListener;
+import android.preference.PreferenceActivity;
+import android.widget.Toast;
+
+public class BaseActivity extends PreferenceActivity {
+    private Activity mActivity;
+
+    private Preference mIntentDemo;
+    private Preference mContentProviderDemo;
+    private Preference mCryptoProvider;
+    private Preference mAidlDemo;
+    private Preference mAidlDemo2;
+
+    /**
+     * Called when the activity is first created.
+     */
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mActivity = this;
+
+        // load preferences from xml
+        addPreferencesFromResource(R.xml.base_preference);
+
+        // find preferences
+        mIntentDemo = (Preference) findPreference("intent_demo");
+        mContentProviderDemo = (Preference) findPreference("content_provider_demo");
+        mCryptoProvider = (Preference) findPreference("openpgp_provider_demo");
+        mAidlDemo = (Preference) findPreference("aidl_demo");
+        mAidlDemo2 = (Preference) findPreference("aidl_demo2");
+
+        mIntentDemo.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                // startActivity(new Intent(mActivity, IntentDemoActivity.class));
+                Toast.makeText(BaseActivity.this, "Not implemented!", Toast.LENGTH_LONG).show();
+
+                return false;
+            }
+        });
+
+        mCryptoProvider.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                startActivity(new Intent(mActivity, OpenPgpProviderActivity.class));
+
+                return false;
+            }
+        });
+
+        // mAidlDemo2.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+        // @Override
+        // public boolean onPreferenceClick(Preference preference) {
+        // startActivity(new Intent(mActivity, AidlDemoActivity2.class));
+        //
+        // return false;
+        // }
+        // });
+
+    }
+
+}
diff --git a/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/Constants.java b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/Constants.java
new file mode 100644
index 000000000..03e76254c
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/Constants.java
@@ -0,0 +1,25 @@
+/*
+ * 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.sufficientlysecure.keychain.demo;
+
+public final class Constants {
+
+    public static final boolean DEBUG = BuildConfig.DEBUG;
+
+    public static final String TAG = "Keychain";
+
+}
diff --git a/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/OpenPgpProviderActivity.java b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/OpenPgpProviderActivity.java
new file mode 100644
index 000000000..4a96de5a1
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/java/org/sufficientlysecure/keychain/demo/OpenPgpProviderActivity.java
@@ -0,0 +1,352 @@
+/*
+ * 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.sufficientlysecure.keychain.demo;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.openintents.openpgp.IOpenPgpKeyIdsCallback;
+import org.openintents.openpgp.OpenPgpData;
+import org.openintents.openpgp.OpenPgpError;
+import org.openintents.openpgp.OpenPgpServiceConnection;
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.openintents.openpgp.IOpenPgpCallback;
+import org.openintents.openpgp.IOpenPgpService;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.pm.ResolveInfo;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.os.RemoteException;
+import android.util.Log;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.EditText;
+import android.widget.ListAdapter;
+import android.widget.TextView;
+import android.widget.Toast;
+
+public class OpenPgpProviderActivity extends Activity {
+    Activity mActivity;
+
+    EditText mMessage;
+    EditText mCiphertext;
+    EditText mEncryptUserIds;
+
+    private OpenPgpServiceConnection mCryptoServiceConnection;
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        setContentView(R.layout.crypto_provider_demo);
+
+        mActivity = this;
+
+        mMessage = (EditText) findViewById(R.id.crypto_provider_demo_message);
+        mCiphertext = (EditText) findViewById(R.id.crypto_provider_demo_ciphertext);
+        mEncryptUserIds = (EditText) findViewById(R.id.crypto_provider_demo_encrypt_user_id);
+
+        selectCryptoProvider();
+    }
+
+    /**
+     * Callback from remote openpgp service
+     */
+    final IOpenPgpKeyIdsCallback.Stub getKeysEncryptCallback = new IOpenPgpKeyIdsCallback.Stub() {
+
+        @Override
+        public void onSuccess(final long[] keyIds) throws RemoteException {
+            Log.d(Constants.TAG, "getKeysEncryptCallback keyId " + keyIds[0]);
+            mActivity.runOnUiThread(new Runnable() {
+
+                @Override
+                public void run() {
+                    // encrypt after getting key ids
+                    String inputStr = mMessage.getText().toString();
+                    OpenPgpData input = new OpenPgpData(inputStr);
+
+                    Log.d(Constants.TAG, "getKeysEncryptCallback inputStr " + inputStr);
+
+                    try {
+                        mCryptoServiceConnection.getService().encrypt(input,
+                                new OpenPgpData(OpenPgpData.TYPE_STRING), keyIds, encryptCallback);
+                    } catch (RemoteException e) {
+                        Log.e(Constants.TAG, "CryptoProviderDemo", e);
+                    }
+                }
+            });
+        }
+
+        @Override
+        public void onError(OpenPgpError error) throws RemoteException {
+            handleError(error);
+        }
+
+    };
+
+    final IOpenPgpKeyIdsCallback.Stub getKeysSignAndEncryptCallback = new IOpenPgpKeyIdsCallback.Stub() {
+
+        @Override
+        public void onSuccess(final long[] keyIds) throws RemoteException {
+            Log.d(Constants.TAG, "getKeysSignAndEncryptCallback keyId " + keyIds[0]);
+
+            mActivity.runOnUiThread(new Runnable() {
+
+                @Override
+                public void run() {
+                    // encrypt after getting key ids
+                    String inputStr = mMessage.getText().toString();
+                    OpenPgpData input = new OpenPgpData(inputStr);
+
+                    try {
+                        mCryptoServiceConnection.getService().signAndEncrypt(input,
+                                new OpenPgpData(OpenPgpData.TYPE_STRING), keyIds, encryptCallback);
+                    } catch (RemoteException e) {
+                        Log.e(Constants.TAG, "CryptoProviderDemo", e);
+                    }
+                }
+            });
+        }
+
+        @Override
+        public void onError(OpenPgpError error) throws RemoteException {
+            handleError(error);
+        }
+
+    };
+
+    final IOpenPgpCallback.Stub encryptCallback = new IOpenPgpCallback.Stub() {
+
+        @Override
+        public void onSuccess(final OpenPgpData output, OpenPgpSignatureResult signatureResult)
+                throws RemoteException {
+            Log.d(Constants.TAG, "encryptCallback");
+
+            runOnUiThread(new Runnable() {
+
+                @Override
+                public void run() {
+                    mCiphertext.setText(output.getString());
+                }
+            });
+        }
+
+        @Override
+        public void onError(OpenPgpError error) throws RemoteException {
+            handleError(error);
+        }
+
+    };
+
+    final IOpenPgpCallback.Stub decryptAndVerifyCallback = new IOpenPgpCallback.Stub() {
+
+        @Override
+        public void onSuccess(final OpenPgpData output, final OpenPgpSignatureResult signatureResult)
+                throws RemoteException {
+            Log.d(Constants.TAG, "decryptAndVerifyCallback");
+
+            runOnUiThread(new Runnable() {
+
+                @Override
+                public void run() {
+                    mMessage.setText(output.getString());
+                    if (signatureResult != null) {
+                        Toast.makeText(OpenPgpProviderActivity.this,
+                                "signature result:\n" + signatureResult.toString(),
+                                Toast.LENGTH_LONG).show();
+                    }
+                }
+            });
+
+        }
+
+        @Override
+        public void onError(OpenPgpError error) throws RemoteException {
+            handleError(error);
+        }
+
+    };
+
+    private void handleError(final OpenPgpError error) {
+        mActivity.runOnUiThread(new Runnable() {
+
+            @Override
+            public void run() {
+                Toast.makeText(mActivity,
+                        "onError id:" + error.getErrorId() + "\n\n" + error.getMessage(),
+                        Toast.LENGTH_LONG).show();
+                Log.e(Constants.TAG, "onError getErrorId:" + error.getErrorId());
+                Log.e(Constants.TAG, "onError getMessage:" + error.getMessage());
+            }
+        });
+    }
+
+    public void encryptOnClick(View view) {
+        try {
+            mCryptoServiceConnection.getService().getKeyIds(
+                    mEncryptUserIds.getText().toString().split(","), true, getKeysEncryptCallback);
+        } catch (RemoteException e) {
+            Log.e(Constants.TAG, "CryptoProviderDemo", e);
+        }
+    }
+
+    public void signOnClick(View view) {
+        String inputStr = mMessage.getText().toString();
+        OpenPgpData input = new OpenPgpData(inputStr);
+
+        try {
+            mCryptoServiceConnection.getService().sign(input,
+                    new OpenPgpData(OpenPgpData.TYPE_STRING), encryptCallback);
+        } catch (RemoteException e) {
+            Log.e(Constants.TAG, "CryptoProviderDemo", e);
+        }
+    }
+
+    public void signAndEncryptOnClick(View view) {
+        try {
+            mCryptoServiceConnection.getService().getKeyIds(
+                    mEncryptUserIds.getText().toString().split(","), true,
+                    getKeysSignAndEncryptCallback);
+        } catch (RemoteException e) {
+            Log.e(Constants.TAG, "CryptoProviderDemo", e);
+        }
+    }
+
+    public void decryptAndVerifyOnClick(View view) {
+        String inputStr = mCiphertext.getText().toString();
+        OpenPgpData input = new OpenPgpData(inputStr);
+
+        try {
+            mCryptoServiceConnection.getService().decryptAndVerify(input,
+                    new OpenPgpData(OpenPgpData.TYPE_STRING), decryptAndVerifyCallback);
+        } catch (RemoteException e) {
+            Log.e(Constants.TAG, "CryptoProviderDemo", e);
+        }
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        if (mCryptoServiceConnection != null) {
+            mCryptoServiceConnection.unbindFromService();
+        }
+    }
+
+    private static class OpenPgpProviderElement {
+        private String packageName;
+        private String simpleName;
+        private Drawable icon;
+
+        public OpenPgpProviderElement(String packageName, String simpleName, Drawable icon) {
+            this.packageName = packageName;
+            this.simpleName = simpleName;
+            this.icon = icon;
+        }
+
+        @Override
+        public String toString() {
+            return simpleName;
+        }
+    }
+
+    private void selectCryptoProvider() {
+        Intent intent = new Intent(IOpenPgpService.class.getName());
+
+        final ArrayList<OpenPgpProviderElement> providerList = new ArrayList<OpenPgpProviderElement>();
+
+        List<ResolveInfo> resInfo = getPackageManager().queryIntentServices(intent, 0);
+        if (!resInfo.isEmpty()) {
+            for (ResolveInfo resolveInfo : resInfo) {
+                if (resolveInfo.serviceInfo == null)
+                    continue;
+
+                String packageName = resolveInfo.serviceInfo.packageName;
+                String simpleName = String.valueOf(resolveInfo.serviceInfo
+                        .loadLabel(getPackageManager()));
+                Drawable icon = resolveInfo.serviceInfo.loadIcon(getPackageManager());
+                providerList.add(new OpenPgpProviderElement(packageName, simpleName, icon));
+            }
+        }
+
+        AlertDialog.Builder alert = new AlertDialog.Builder(this);
+        alert.setTitle("Select OpenPGP Provider!");
+        alert.setCancelable(false);
+
+        if (!providerList.isEmpty()) {
+            // add "disable OpenPGP provider"
+            providerList.add(0, new OpenPgpProviderElement(null, "Disable OpenPGP Provider",
+                    getResources().getDrawable(android.R.drawable.ic_menu_close_clear_cancel)));
+
+            // Init ArrayAdapter with OpenPGP Providers
+            ListAdapter adapter = new ArrayAdapter<OpenPgpProviderElement>(this,
+                    android.R.layout.select_dialog_item, android.R.id.text1, providerList) {
+                public View getView(int position, View convertView, ViewGroup parent) {
+                    // User super class to create the View
+                    View v = super.getView(position, convertView, parent);
+                    TextView tv = (TextView) v.findViewById(android.R.id.text1);
+
+                    // Put the image on the TextView
+                    tv.setCompoundDrawablesWithIntrinsicBounds(providerList.get(position).icon,
+                            null, null, null);
+
+                    // Add margin between image and text (support various screen densities)
+                    int dp5 = (int) (5 * getResources().getDisplayMetrics().density + 0.5f);
+                    tv.setCompoundDrawablePadding(dp5);
+
+                    return v;
+                }
+            };
+
+            alert.setSingleChoiceItems(adapter, -1, new DialogInterface.OnClickListener() {
+
+                public void onClick(DialogInterface dialog, int position) {
+                    String packageName = providerList.get(position).packageName;
+
+                    if (packageName == null) {
+                        dialog.cancel();
+                        finish();
+                    }
+
+                    // bind to service
+                    mCryptoServiceConnection = new OpenPgpServiceConnection(
+                            OpenPgpProviderActivity.this, packageName);
+                    mCryptoServiceConnection.bindToService();
+
+                    dialog.dismiss();
+                }
+            });
+        } else {
+            alert.setMessage("No OpenPGP Provider installed!");
+        }
+
+        alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+
+            public void onClick(DialogInterface dialog, int id) {
+                dialog.cancel();
+                finish();
+            }
+        });
+
+        AlertDialog ad = alert.create();
+        ad.show();
+    }
+}
diff --git a/OpenPGP-Keychain-API/example-app/src/main/res/drawable-hdpi/ic_launcher.png b/OpenPGP-Keychain-API/example-app/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100644
index 000000000..cf114d7db
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/res/drawable-hdpi/ic_launcher.png
diff --git a/OpenPGP-Keychain-API/example-app/src/main/res/drawable-mdpi/ic_launcher.png b/OpenPGP-Keychain-API/example-app/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 000000000..d55318843
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/res/drawable-mdpi/ic_launcher.png
diff --git a/OpenPGP-Keychain-API/example-app/src/main/res/drawable-xhdpi/ic_launcher.png b/OpenPGP-Keychain-API/example-app/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 000000000..13ed3d450
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/res/drawable-xhdpi/ic_launcher.png
diff --git a/OpenPGP-Keychain-API/example-app/src/main/res/drawable-xxhdpi/ic_launcher.png b/OpenPGP-Keychain-API/example-app/src/main/res/drawable-xxhdpi/ic_launcher.png
new file mode 100644
index 000000000..831c993d4
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/res/drawable-xxhdpi/ic_launcher.png
diff --git a/OpenPGP-Keychain-API/example-app/src/main/res/layout/aidl_demo2.xml b/OpenPGP-Keychain-API/example-app/src/main/res/layout/aidl_demo2.xml
new file mode 100644
index 000000000..73abd9b5c
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/res/layout/aidl_demo2.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content" >
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical" >
+
+        <Button
+            android:id="@+id/aidl_demo_select_encryption_key"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="selectEncryptionKeysOnClick"
+            android:text="Select encryption key(s)" />
+
+        <EditText
+            android:id="@+id/aidl_demo_keyrings"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="keyrings output"
+            android:textAppearance="@android:style/TextAppearance.Small" />
+
+        <Button
+            android:id="@+id/aidl_demo_get_keyrings_strings"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="getKeyringsStringsOnClick"
+            android:text="getKeyrings as Strings" />
+
+        <Button
+            android:id="@+id/aidl_demo_get_keyrings_bytes"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="getKeyringsBytesOnClick"
+            android:text="getKeyringsBytes" />
+    </LinearLayout>
+
+</ScrollView>
\ No newline at end of file
diff --git a/OpenPGP-Keychain-API/example-app/src/main/res/layout/crypto_provider_demo.xml b/OpenPGP-Keychain-API/example-app/src/main/res/layout/crypto_provider_demo.xml
new file mode 100644
index 000000000..9f2a0e6ee
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/res/layout/crypto_provider_demo.xml
@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical" >
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Encrypt UserIds (split with &apos;,&apos;)"
+        android:textAppearance="?android:attr/textAppearanceMedium" />
+
+    <EditText
+        android:id="@+id/crypto_provider_demo_encrypt_user_id"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="dominik@dominikschuermann.de"
+        android:textAppearance="@android:style/TextAppearance.Small" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Message"
+        android:textAppearance="?android:attr/textAppearanceMedium" />
+
+    <EditText
+        android:id="@+id/crypto_provider_demo_message"
+        android:layout_width="match_parent"
+        android:layout_height="100dip"
+        android:scrollHorizontally="true"
+        android:scrollbars="vertical"
+        android:text="message"
+        android:textAppearance="@android:style/TextAppearance.Small" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Ciphertext"
+        android:textAppearance="?android:attr/textAppearanceMedium" />
+
+    <EditText
+        android:id="@+id/crypto_provider_demo_ciphertext"
+        android:layout_width="match_parent"
+        android:layout_height="100dip"
+        android:text="ciphertext"
+        android:textAppearance="@android:style/TextAppearance.Small" />
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" >
+
+        <Button
+            android:id="@+id/crypto_provider_demo_encrypt"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:onClick="encryptOnClick"
+            android:text="Encrypt" />
+
+        <Button
+            android:id="@+id/crypto_provider_demo_sign"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:onClick="signOnClick"
+            android:text="Sign" />
+
+        <Button
+            android:id="@+id/crypto_provider_demo_encrypt_and_sign"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:onClick="signAndEncryptOnClick"
+            android:text="Sign and Encrypt" />
+    </LinearLayout>
+
+    <Button
+        android:id="@+id/crypto_provider_demo_decrypt_and_verify"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:onClick="decryptAndVerifyOnClick"
+        android:text="Decrypt and Verify" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/OpenPGP-Keychain-API/example-app/src/main/res/layout/intent_demo.xml b/OpenPGP-Keychain-API/example-app/src/main/res/layout/intent_demo.xml
new file mode 100644
index 000000000..a765343f9
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/res/layout/intent_demo.xml
@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content" >
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical" >
+
+        <Button
+            android:id="@+id/Button02"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="encryptOnClick"
+            android:text="Encrypt" />
+
+        <Button
+            android:id="@+id/intent_demo_create_new_key"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="createNewKeyOnClick"
+            android:text="Create new key" />
+
+        <Button
+            android:id="@+id/intent_demo_select_secret_key"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="selectSecretKeyOnClick"
+            android:text="Select secret key" />
+
+        <Button
+            android:id="@+id/intent_demo_select_encryption_key"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="selectEncryptionKeysOnClick"
+            android:text="Select encryption key(s)" />
+
+        <EditText
+            android:id="@+id/intent_demo_message"
+            android:layout_width="match_parent"
+            android:layout_height="150dip"
+            android:text="message"
+            android:textAppearance="@android:style/TextAppearance.Small" />
+
+        <EditText
+            android:id="@+id/intent_demo_ciphertext"
+            android:layout_width="match_parent"
+            android:layout_height="150dip"
+            android:text="ciphertext"
+            android:textAppearance="@android:style/TextAppearance.Small" />
+
+        <Button
+            android:id="@+id/intent_demo_encrypt"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="encryptOnClick"
+            android:text="Encrypt" />
+
+        <Button
+            android:id="@+id/intent_demo_encrypt"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="encryptAndReturnOnClick"
+            android:text="Encrypt and return result" />
+
+        <Button
+            android:id="@+id/intent_demo_decrypt"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="decryptOnClick"
+            android:text="Decrypt" />
+
+        <Button
+            android:id="@+id/intent_demo_decrypt"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:onClick="decryptAndReturnOnClick"
+            android:text="Decrypt and return result" />
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:text="APG Data:" />
+
+        <TextView
+            android:id="@+id/intent_demo_data"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:minLines="10" />
+    </LinearLayout>
+
+</ScrollView>
\ No newline at end of file
diff --git a/OpenPGP-Keychain-API/example-app/src/main/res/xml/base_preference.xml b/OpenPGP-Keychain-API/example-app/src/main/res/xml/base_preference.xml
new file mode 100644
index 000000000..5febfad44
--- /dev/null
+++ b/OpenPGP-Keychain-API/example-app/src/main/res/xml/base_preference.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
+
+    <PreferenceCategory android:title="Intent" >
+        <Preference
+            android:key="intent_demo"
+            android:title="Intent Demo" />
+    </PreferenceCategory>
+    <!-- <PreferenceCategory android:title="AIDL" > -->
+    <!-- <Preference -->
+    <!-- android:key="aidl_demo2" -->
+    <!-- android:title="AIDL Demo (ACCESS_KEYS permission)" /> -->
+    <!-- </PreferenceCategory> -->
+    <PreferenceCategory android:title="OpenPGP Provider" >
+        <org.openintents.openpgp.OpenPgpListPreference
+            android:key="openpgp_provider_list"
+            android:title="Select OpenPGP Provider!" />
+        <Preference
+            android:key="openpgp_provider_demo"
+            android:title="OpenPGP Provider" />
+    </PreferenceCategory>
+
+</PreferenceScreen>
\ No newline at end of file