encrypted export WIP

OpenKeychain/src/main/res/layout/backup_code_fragment.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_gravity="center"
+    android:paddingTop="10dp">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:padding="10dp"
+        android:layout_gravity="center_horizontal"
+        android:text="Your key backup will be encrypted with this code:"
+        />
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:padding="10dp"
+        android:layout_margin="20dp"
+        android:id="@+id/backup_code"
+        tools:text="abcde-fghij-klmno-pqrst"
+        style="?android:textAppearanceLarge"
+        />
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:layout_margin="10dp"
+        android:text="Ok, I wrote it down!"
+        android:id="@+id/button_ok"
+        style="?buttonStyle"
+        />
+
+</LinearLayout>

OpenKeychain/src/main/res/layout/drawer_backup_activity.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <include
+        android:id="@+id/toolbar_include"
+        layout="@layout/toolbar_standalone_white" />
+
+    <LinearLayout
+        android:layout_below="@id/toolbar_include"
+        android:orientation="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <include layout="@layout/notify_area" />
+
+        <FrameLayout
+            android:id="@+id/content_frame"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <fragment
+                android:id="@+id/backup_fragment"
+                android:name="org.sufficientlysecure.keychain.ui.BackupCodeDisplayFragment"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent" />
+        </FrameLayout>
+
+    </LinearLayout>
+</RelativeLayout>

OpenKeychain/src/main/res/values/strings.xml

@@ -30,6 +30,7 @@
     <string name="title_export_keys">"Backup Keys"</string>
     <string name="title_key_not_found">"Key Not Found"</string>
     <string name="title_send_key">"Upload to Keyserver"</string>
+    <string name="title_backup">"Backup Key"</string>
     <string name="title_certify_key">"Confirm Key"</string>
     <string name="title_key_details">"Key Details"</string>
     <string name="title_help">"Help"</string>