Contact list scroll up button now shown only if there are active chats.

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

@@ -84,6 +84,7 @@ public class ContactListFragment extends Fragment implements OnAccountChangedLis
      */
     private Animation animation;
     private AccountActionButtonsAdapter accountActionButtonsAdapter;
+    private View scrollToChatsActionButtonContainer;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
@@ -105,7 +106,9 @@ public class ContactListFragment extends Fragment implements OnAccountChangedLis
                 this, (LinearLayout) view.findViewById(R.id.account_action_buttons));
         accountActionButtonsAdapter.onChange();
 
-        view.findViewById(R.id.fab_up_container).setOnClickListener(this);
+        scrollToChatsActionButtonContainer = view.findViewById(R.id.fab_up_container);
+        scrollToChatsActionButtonContainer.setOnClickListener(this);
+        scrollToChatsActionButtonContainer.setVisibility(View.GONE);
 
         return view;
     }
@@ -177,6 +180,13 @@ public class ContactListFragment extends Fragment implements OnAccountChangedLis
     @Override
     public void onContactListChanged(CommonState commonState, boolean hasContacts,
                                      boolean hasVisibleContacts, boolean isFilterEnabled) {
+        if (adapter.isHasActiveChats()) {
+            scrollToChatsActionButtonContainer.setVisibility(View.VISIBLE);
+        } else {
+            scrollToChatsActionButtonContainer.setVisibility(View.GONE);
+        }
+
+
         if (hasVisibleContacts) {
             infoView.setVisibility(View.GONE);
             disconnectedView.clearAnimation();
@@ -296,6 +306,9 @@ public class ContactListFragment extends Fragment implements OnAccountChangedLis
             buttonView.setText(button);
         }
         buttonView.setOnClickListener(listener);
+
+
+
     }
 
     /**

app/src/main/java/com/xabber/android/ui/adapter/ContactListAdapter.java

@@ -91,6 +91,7 @@ public class ContactListAdapter extends GroupedContactAdapter implements Runnabl
     String filterString;
 
     private final OnContactListChangedListener listener;
+    private boolean hasActiveChats = false;
 
     public ContactListAdapter(Activity activity, OnContactListChangedListener listener,
                               OnClickListener onClickListener) {
@@ -296,6 +297,8 @@ public class ContactListAdapter extends GroupedContactAdapter implements Runnabl
                 }
             }
 
+            hasActiveChats = activeChats.getTotal() > 0;
+
             // Remove empty groups, sort and apply structure.
             baseEntities.clear();
             if (hasVisibleContacts) {
@@ -362,8 +365,7 @@ public class ContactListAdapter extends GroupedContactAdapter implements Runnabl
         }
 
         super.onChange();
-        listener.onContactListChanged(commonState, hasContacts, hasVisibleContacts,
-                filterString != null);
+        listener.onContactListChanged(commonState, hasContacts, hasVisibleContacts, filterString != null);
 
         synchronized (refreshLock) {
             nextRefresh = new Date(new Date().getTime() + REFRESH_INTERVAL);
@@ -467,4 +469,8 @@ public class ContactListAdapter extends GroupedContactAdapter implements Runnabl
         }
 
     }
+
+    public boolean isHasActiveChats() {
+        return hasActiveChats;
+    }
 }