src/main/java/eu/siacs/conversations/ui/adapter/ConversationAdapter.java

@@ -390,6 +390,10 @@ public class ConversationAdapter
             int drId = activity.getThemeResource(R.attr.ic_group_16, R.drawable.ic_group_selected_black_16);
             Drawable dr = AppCompatResources.getDrawable(activity, drId);
             viewHolder.binding.conversationName.setCompoundDrawablesRelativeWithIntrinsicBounds(null, null, dr, null);
+        } else if (conversation.getMode() == Conversation.MODE_SINGLE && conversation.hasPermanentCounterpart()) {
+            int drId = activity.getThemeResource(R.attr.ic_secret_chat_16, R.drawable.ic_secret_chat_16dp_black);
+            Drawable dr = AppCompatResources.getDrawable(activity, drId);
+            viewHolder.binding.conversationName.setCompoundDrawablesRelativeWithIntrinsicBounds(null, null, dr, null);
         } else {
             viewHolder.binding.conversationName.setCompoundDrawablesRelativeWithIntrinsicBounds(null, null, null, null);
         }

src/main/res/drawable/ic_secret_chat_16dp_black.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="16dp"
+    android:height="16dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M263.72,864Q234,864 213,842.85Q192,821.7 192,792L192,408Q192,378.3 213.15,357.15Q234.3,336 264,336L288,336L288,240Q288,160.32 344.23,104.16Q400.45,48 480.23,48Q560,48 616,104.16Q672,160.32 672,240L672,336L696,336Q725.7,336 746.85,357.15Q768,378.3 768,408L768,792Q768,821.7 746.84,842.85Q725.68,864 695.96,864L263.72,864ZM264,792L696,792Q696,792 696,792Q696,792 696,792L696,408Q696,408 696,408Q696,408 696,408L264,408Q264,408 264,408Q264,408 264,408L264,792Q264,792 264,792Q264,792 264,792ZM480.21,672Q510,672 531,650.79Q552,629.58 552,599.79Q552,570 530.79,549Q509.58,528 479.79,528Q450,528 429,549.21Q408,570.42 408,600.21Q408,630 429.21,651Q450.42,672 480.21,672ZM360,336L600,336L600,240Q600,190 565,155Q530,120 480,120Q430,120 395,155Q360,190 360,240L360,336ZM264,792Q264,792 264,792Q264,792 264,792L264,408Q264,408 264,408Q264,408 264,408L264,408Q264,408 264,408Q264,408 264,408L264,792Q264,792 264,792Q264,792 264,792Z"/>
+</vector>

src/main/res/drawable/ic_secret_chat_16dp_white.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="16dp"
+    android:height="16dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M263.72,864Q234,864 213,842.85Q192,821.7 192,792L192,408Q192,378.3 213.15,357.15Q234.3,336 264,336L288,336L288,240Q288,160.32 344.23,104.16Q400.45,48 480.23,48Q560,48 616,104.16Q672,160.32 672,240L672,336L696,336Q725.7,336 746.85,357.15Q768,378.3 768,408L768,792Q768,821.7 746.84,842.85Q725.68,864 695.96,864L263.72,864ZM264,792L696,792Q696,792 696,792Q696,792 696,792L696,408Q696,408 696,408Q696,408 696,408L264,408Q264,408 264,408Q264,408 264,408L264,792Q264,792 264,792Q264,792 264,792ZM480.21,672Q510,672 531,650.79Q552,629.58 552,599.79Q552,570 530.79,549Q509.58,528 479.79,528Q450,528 429,549.21Q408,570.42 408,600.21Q408,630 429.21,651Q450.42,672 480.21,672ZM360,336L600,336L600,240Q600,190 565,155Q530,120 480,120Q430,120 395,155Q360,190 360,240L360,336ZM264,792Q264,792 264,792Q264,792 264,792L264,408Q264,408 264,408Q264,408 264,408L264,408Q264,408 264,408Q264,408 264,408L264,792Q264,792 264,792Q264,792 264,792Z"/>
+</vector>

src/main/res/values/attrs.xml

@@ -134,6 +134,7 @@
     <attr name="ic_group_unselected" format="reference" />
     <attr name="ic_group_selected" format="reference" />
     <attr name="ic_group_16" format="reference" />
+    <attr name="ic_secret_chat_16" format="reference" />
 
     <attr name="dialog_horizontal_padding" format="dimension" />
     <attr name="dialog_vertical_padding" format="dimension" />

src/main/res/values/strings.xml

@@ -1092,7 +1092,7 @@
     <string name="filter">filter</string>
     <string name="could_not_create_file">could_not_create_file</string>
     <string name="secret_chat_title">%1$s (Secret Chat / %2$s)</string>
-    <string name="secret_chat_title_no_resource">%1$s (Secret Chat / %2$s)</string>
+    <string name="secret_chat_title_no_resource">%1$s (Secret Chat)</string>
     <string name="muc_private_conversation_title">%1$s (%2$s)</string>
     <string name="note_to_self_conversation_title">Note to self (%1$s)</string>
     <string name="muc_private_conversation_info_title">Private conversation with:</string>

src/main/res/values/themes.xml

@@ -153,6 +153,7 @@
         <item name="ic_group_unselected" type="reference">@drawable/outline_group_black_24dp</item>
         <item name="ic_group_selected" type="reference">@drawable/ic_group_selected_black_24</item>
         <item name="ic_group_16" type="reference">@drawable/ic_group_selected_black_16</item>
+        <item name="ic_secret_chat_16" type="reference">@drawable/ic_secret_chat_16dp_black</item>
 
         <item name="icon_notifications" type="reference">@drawable/ic_notifications_black_24dp
         </item>
@@ -331,6 +332,7 @@
         <item name="ic_group_unselected" type="reference">@drawable/outline_group_white_24</item>
         <item name="ic_group_selected" type="reference">@drawable/ic_group_selected_white_24</item>
         <item name="ic_group_16" type="reference">@drawable/ic_group_selected_white_16</item>
+        <item name="ic_secret_chat_16" type="reference">@drawable/ic_secret_chat_16dp_white</item>
 
         <item name="icon_notifications" type="reference">@drawable/ic_notifications_white_24dp
         </item>