Fix Todo-with-undo

izumin5210 · Jan 2, 2018 · 2c36b49 · 2c36b49
1 parent d8010ad
commit 2c36b49
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/.../main/java/info/izumin/android/droidux/example/todoswithundo/reducer/TodoListReducer.java b/.../main/java/info/izumin/android/droidux/example/todoswithundo/reducer/TodoListReducer.java
@@ -20,6 +20,11 @@ public class TodoListReducer {
 
     @Dispatchable(AddTodoAction.class)
     public TodoList onAddedTodo(TodoList state, AddTodoAction action) {
+        if (state.isEmpty()) {
+            TodoList newState = new TodoList(state);
+            newState.add(new TodoList.Todo(0, action.getText()));
+            return newState;
+        }
         int id = Observable.fromIterable(state)
                 .reduce((todo, todo2) -> (todo.getId() < todo2.getId()) ? todo2 : todo)
                 .onErrorReturn(throwable -> new TodoList.Todo(0, ""))