added display of own fingerprint

res/layout/otr_fingerprint.xml

@@ -0,0 +1,17 @@
+<?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"
+    android:padding="8dp">
+
+    <TextView
+        android:id="@+id/otr_fingerprint"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        android:typeface="monospace"
+        android:text="@string/no_otr_fingerprint"/>
+
+</LinearLayout>

res/menu/manageaccounts_context.xml

@@ -1,34 +1,36 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android" >
+
     <item
         android:id="@+id/mgmt_account_edit"
         android:icon="@drawable/ic_action_edit"
-        android:title="Edit Account"
-        android:showAsAction="always" />
+        android:showAsAction="always"
+        android:title="Edit Account"/>
     <item
         android:id="@+id/mgmt_account_delete"
         android:icon="@drawable/ic_action_delete"
-        android:title="Delete"
         android:showAsAction="always"
-        />
+        android:title="Delete"/>
     <item
         android:id="@+id/mgmt_account_disable"
-        android:title="Temporarily disable"
-        android:showAsAction="never"/>
+        android:showAsAction="never"
+        android:title="Temporarily disable"/>
     <item
         android:id="@+id/mgmt_account_enable"
-        android:title="Enable"
         android:showAsAction="never"
+        android:title="Enable"
         android:visible="false"/>
-    
     <item
         android:id="@+id/mgmt_account_announce_pgp"
         android:showAsAction="never"
-        android:title="@string/announce_pgp" />
+        android:title="@string/announce_pgp"/>
+    <item
+        android:id="@+id/mgmt_otr_key"
+        android:showAsAction="never"
+        android:title="@string/show_otr_key"/>
     <item
         android:id="@+id/mgmt_account_info"
-            android:title="@string/account_info"
         android:showAsAction="never"
-            />
+        android:title="@string/account_info"/>
 
 </menu>

res/values/strings.xml

@@ -27,4 +27,6 @@
     <string name="register_account">Register new account on server</string>
     <string name="share_with">Share with</string>
     <string name="ask_again"><u>Click to ask again</u></string>
+    <string name="show_otr_key">OTR fingerprint</string>
+    <string name="no_otr_fingerprint">No OTR Fingerprint generated. Just go ahead an start an encrypted conversation</string>
 </resources>

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

@@ -119,6 +119,9 @@ public class OtrEngine implements OtrEngineHost {
 	}
 
 	public PublicKey getPublicKey() {
+		if (this.keyPair == null) {
+			return null;
+		}
 		return this.keyPair.getPublic();
 	}
 	

src/eu/siacs/conversations/entities/Account.java

@@ -217,6 +217,9 @@ public class Account  extends AbstractEntity{
 		if (this.otrFingerprint == null) {
 			try {
 				DSAPublicKey pubkey = (DSAPublicKey) this.otrEngine.getPublicKey();
+				if (pubkey == null) {
+					return null;
+				}
 				StringBuilder builder = new StringBuilder(new OtrCryptoEngineImpl().getFingerprint(pubkey));
 				builder.insert(8, " ");
 				builder.insert(17, " ");
@@ -241,4 +244,9 @@ public class Account  extends AbstractEntity{
 	public void setRosterVersion(String version) {
 		this.rosterVersion = version;
 	}
+
+	public String getOtrFingerprint(Context applicationContext) {
+		this.getOtrEngine(applicationContext);
+		return this.getOtrFingerprint();
+	}
 }

src/eu/siacs/conversations/ui/ManageAccountActivity.java

@@ -12,6 +12,7 @@ import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
 import eu.siacs.conversations.xmpp.XmppConnection;
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.content.ClipData.Item;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
@@ -286,6 +287,18 @@ public class ManageAccountActivity extends XmppActivity {
 										}
 									}
 								}
+							} else if (item.getItemId() == R.id.mgmt_otr_key) {
+								AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+								builder.setTitle("OTR Fingerprint");
+								String fingerprintTxt = selectedAccountForActionMode.getOtrFingerprint(getApplicationContext());
+								View view = (View) getLayoutInflater().inflate(R.layout.otr_fingerprint, null);
+								if (fingerprintTxt!=null) {
+									TextView fingerprint = (TextView) view.findViewById(R.id.otr_fingerprint);
+									fingerprint.setText(fingerprintTxt);
+								}
+								builder.setView(view);
+								builder.setPositiveButton("Done", null);
+								builder.create().show();
 							} else if (item.getItemId() == R.id.mgmt_account_info) {
 								AlertDialog.Builder builder = new AlertDialog.Builder(activity);
 								builder.setTitle(getString(R.string.account_info));