安卓默认横屏显示

public class Base extends AppCompatActivity{
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //全屏显示
        if (getSupportActionBar() != null){
            getSupportActionBar().hide();
        }
    }

    @Override
    protected void onResume() {
        //横屏显示
        if (getRequestedOrientation()!= ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE){
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }
        super.onResume();
    }

}