tabLayout.setLayoutDirection(View.LAYOUT_DIRECTION_LTR);
viewPager.setLayoutDirection(View.LAYOUT_DIRECTION_LTR);

tabLayout.setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
viewPager.setLayoutDirection(View.LAYOUT_DIRECTION_RTL);

viewPager.setOrientation(ViewPager2.ORIENTATION_HORIZONTAL);

viewPager.setOrientation(ViewPager2.ORIENTATION_VERTICAL);

//布局排列方向
android:layoutDirection=""
//ViewPager2的滑动方向
android:orientation=""

如有疑问，欢迎讨论。