Android错误[尝试调用虚拟方法'void android.support.v7.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)]

I am trying to create a menu activity that uses a navigation drawer. At first I was using the getActionBar() and then i found out that i was supposed to change to getSupportActionBar() and extend AppCompactActivity which iI did but I still seem to be getting the same error:I am trying to create a menu activity that uses