This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.

This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.

오류 에러

액션바와 툴바를 같이 사용해서 나오는 에러임.

테마쪽에서 액션바를 없애거나 코드에서 툴바를 제거하면 정상적으로 돌아감