some further otr improvements

src/main/java/eu/siacs/conversations/crypto/OtrEngine.java

@@ -126,7 +126,7 @@ public class OtrEngine extends OtrCryptoEngineImpl implements OtrEngineHost {
 	@Override
 	public byte[] getLocalFingerprintRaw(SessionID arg0) {
 		try {
-			return new OtrCryptoEngineImpl().getFingerprintRaw(getPublicKey());
+			return getFingerprintRaw(getPublicKey());
 		} catch (OtrCryptoException e) {
 			return null;
 		}

src/main/java/eu/siacs/conversations/ui/ConversationFragment.java

@@ -374,6 +374,8 @@ public class ConversationFragment extends Fragment {
 								privateMessageWith(message.getCounterpart());
 							}
 						}
+					} else {
+						activity.showQrCode();
 					}
 				}
 			});

src/main/java/eu/siacs/conversations/ui/VerifyOTRActivity.java

@@ -5,12 +5,11 @@ import android.app.AlertDialog;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
+import android.view.Menu;
 import android.view.View;
 import android.widget.Button;
 import android.widget.EditText;
-import android.widget.ImageView;
 import android.widget.LinearLayout;
-import android.widget.RelativeLayout;
 import android.widget.TextView;
 import android.widget.Toast;
 
@@ -411,6 +410,13 @@ public class VerifyOTRActivity extends XmppActivity implements XmppConnectionSer
 		this.mSmpVerificationArea = (LinearLayout) findViewById(R.id.smp_verification_area);
 	}
 
+	@Override
+	public boolean onCreateOptionsMenu(final Menu menu) {
+		super.onCreateOptionsMenu(menu);
+		getMenuInflater().inflate(R.menu.verify_otr, menu);
+		return true;
+	}
+
 	private void showManuallyVerifyDialog() {
 		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 		builder.setTitle(R.string.manually_verify);

src/main/res/menu/verification_choices.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/scan_fingerprint"
+        android:title="@string/scan_qr_code"/>
+    <item
+        android:id="@+id/ask_question"
+        android:title="@string/ask_question"/>
+
+    <item
+        android:id="@+id/manual_verification"
+        android:title="@string/manually_verify" />
+
+</menu>

src/main/res/menu/verify_otr.xml

@@ -2,10 +2,9 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
 
 	<item
-        android:id="@+id/manually_verify"
-        android:orderInCategory="10"
-        android:showAsAction="never"
-        android:title="@string/manually_verify" />
+		android:id="@+id/action_show_qr_code"
+		android:title="@string/show_qr_code"
+		android:showAsAction="never" />
 
     <item
         android:id="@+id/action_accounts"

src/main/res/values/strings.xml

@@ -398,5 +398,5 @@
     <string name="smp_explain_answer">Your contact would like to verify your fingerprint by challenging you with a shared secret. Your contact provided the following hint or question for that secret.</string>
     <string name="shared_secret_hint_should_not_be_empty">Your hint should not be empty</string>
     <string name="shared_secret_can_not_be_empty">Your shared secret can not be empty</string>
-    <string name="manual_verification_explanation">Carefully compare the fingerprints shown below with the fingerprints of your contact.\nYou can use a trusted communication channel like an encrypted e-mail or a telephone call channel to exchange those.</string>
+    <string name="manual_verification_explanation">Carefully compare the fingerprint shown below with the fingerprint of your contact.\nYou can use any trusted form of communication like an encrypted e-mail or a telephone call to exchange those.</string>
 </resources>