ChatViewer is shows on avatar click from Chat.

app/src/main/java/com/xabber/android/ui/ChatViewer.java

@@ -57,6 +57,7 @@ import com.xabber.android.ui.dialog.ChatExportDialogFragment;
 import com.xabber.android.ui.helper.ContactTitleActionBarInflater;
 import com.xabber.android.ui.helper.ManagedActivity;
 import com.xabber.android.ui.preferences.ChatEditor;
+import com.xabber.android.ui.preferences.ContactViewer;
 import com.xabber.androiddev.R;
 
 import java.util.Collection;
@@ -70,7 +71,7 @@ import java.util.HashSet;
  */
 public class ChatViewer extends ManagedActivity implements OnChatChangedListener,
         OnContactChangedListener, OnAccountChangedListener, ViewPager.OnPageChangeListener,
-        ChatViewerAdapter.FinishUpdateListener, RecentChatFragment.RecentChatFragmentInteractionListener {
+        ChatViewerAdapter.FinishUpdateListener, RecentChatFragment.RecentChatFragmentInteractionListener, View.OnClickListener {
 
     /**
      * Attention request.
@@ -137,6 +138,8 @@ public class ChatViewer extends ManagedActivity implements OnChatChangedListener
             }
         });
 
+        contactTitleActionBarInflater.setOnAvatarClickListener(this);
+
         setContentView(R.layout.activity_chat_viewer);
 
         if (account != null && user != null) {
@@ -793,4 +796,11 @@ public class ChatViewer extends ManagedActivity implements OnChatChangedListener
             inputManager.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
         }
     }
+
+    @Override
+    public void onClick(View v) {
+        if (v.getId() == R.id.avatar) {
+            startActivity(ContactViewer.createIntent(this, actionWithAccount, actionWithUser));
+        }
+    }
 }

app/src/main/java/com/xabber/android/ui/helper/ContactTitleActionBarInflater.java

@@ -106,6 +106,10 @@ public class ContactTitleActionBarInflater {
         actionBarView.setOnClickListener(onClickListener);
     }
 
+    public void setOnAvatarClickListener(View.OnClickListener onClickListener) {
+        actionBarView.findViewById(R.id.avatar).setOnClickListener(onClickListener);
+    }
+
     public void setName(String name) {
         ((TextView) actionBarView.findViewById(R.id.name)).setText(name);
     }