我我刚开始学习Android开发总初学者,我试图打印的“Hello World”的“浅色主题”,但我有这个问题的Android - 以下类不能被实例化
the following classes could not be instantiated
- android.support.design.widget.coordinatorLayout
- android.support.design.widget.AppBarLayout
- android.support.design.widget.FloatingActionButton
将材质灯光主题更改为NoActionBar主题 –