This makes more sense.

Author: XenoPhex

Week 04/UILabs/app/src/main/java/course/labs/todomanager/ToDoListAdapter.java

@@ -98,8 +98,8 @@ public View getView(int position, View convertView, ViewGroup parent) {
             public void onCheckedChanged(CompoundButton buttonView,
                                          boolean isChecked) {
                 log("Entered onCheckedChanged()");
-                buttonView.setChecked(isChecked);
-
+                ToDoItem.Status status = isChecked ? ToDoItem.Status.DONE : ToDoItem.Status.NOTDONE;
+                toDoItem.setStatus(status);
             }
         });