+        case R.id.action_sort: {
+            SharedPreferences appPreferences = PreferenceManager
+                    .getDefaultSharedPreferences(this);
+            
+            // Read sorting order, default to sort by name ascending
+            Integer sortOrder = appPreferences
+                    .getInt("sortOrder", FileListListAdapter.SORT_NAME);
+            
+            AlertDialog.Builder builder = new AlertDialog.Builder(this);
+            builder.setTitle(R.string.actionbar_sort_title)
+            .setSingleChoiceItems(R.array.actionbar_sortby, sortOrder , new DialogInterface.OnClickListener() {
+                public void onClick(DialogInterface dialog, int which) {
+                    
+                    switch (which){
+                    case 0:
+                        sortByName(true);
+                        break;
+                    case 1:
+                        sortByDate(false);
+                        break;
+                        
+// TODO re-enable when server-side folder size calculation is available                       
+//                    case 2:
+//                        sortBySize(false);
+//                        break;
+                    }
+                    
+                    dialog.dismiss();
+                    
+                }
+            });
+            builder.create().show();
+            break;
+        }