[안드로이드] 프래그먼트 java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.setDisplayShowHomeEnabled(boolean)' on a null object reference java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.setDisplayShowHomeEnabled(boolean)' on a null object reference 1. setSupportActionBar() 를 먼저 적용.2. getActionBar --> getSupportActionBar로 변경 [안드로이드 공부]/프래그먼트 2017.08.07