ViewPager2无法动态添加删除片段

class MyPagerAdapter(fragmentManager: FragmentManager, lifecycle: Lifecycle) :
    FragmentStateAdapter(fragmentManager, lifecycle) {

    private val fragments = mutableListOf<Fragment>()

    fun addFragment(fragment: Fragment) {
        fragments.add(fragment)
        notifyDataSetChanged()
    }

    fun removeFragment(fragment: Fragment) {
        fragments.remove(fragment)
        notifyDataSetChanged()
    }

    override fun getItemCount(): Int {
        return fragments.size
    }

    override fun createFragment(position: Int): Fragment {
        return fragments[position]
    }
}

val viewPager2 = findViewById<ViewPager2>(R.id.viewPager2)
val adapter = MyPagerAdapter(supportFragmentManager, lifecycle)
viewPager2.adapter = adapter

// 添加片段
val fragmentToAdd = YourFragment()
adapter.addFragment(fragmentToAdd)

// 删除片段
val fragmentToRemove = adapter.fragments[position]
adapter.removeFragment(fragmentToRemove)