我已经实现了Viewpager2并有2个片段，每当我打开键盘时，就会调用onPageSelected的{{1}}，并且所选页面首先显示在第一个页面上，然后转到第二个
ViewPager2.OnPageChangeCallback()我尝试设置viewPager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
override fun onPageSelected(position: Int) {
super.onPageSelected(position)
selectedPos = position
if (position == 1) {
ivBackVp.visibility = View.VISIBLE
progress.progress = 100
if (userType == Const.TYPE_PARENT) {
tvStepDescription.text = getString(R.string.create_profile_step_two)
} else {
tvStepDescription.text = getString(R.string.create_profile_step_two_child)
}
tvNext.text = getString(R.string.done)
} else {
ivBackVp.visibility = View.GONE
progress.progress = 50
if (userType == Const.TYPE_PARENT) {
tvStepDescription.text = getString(R.string.create_profile_step_one)
} else {
tvStepDescription.text = getString(R.string.create_profile_step_one_child)
}
tvNext.text = getString(R.string.next)
}
}
})
，但也失败了。请以合理的理由帮助我，说明为什么它必须被调用以及我应该怎么做才能解决这个问题。