Android Kotlin. У меня проблема, сейчас, когда из аргументов с другого экрана переход должен быть сразу на INFO_TAB, экран правильно открывается INFO_TAB, но сверху changeButton стоит на значении BALANCE_TAB, как это исправить? package ru.maxi.mobile.feature.bonusPoints.ui.container

import android.os.Bundle
import android.util.Log
import android.view.View
import androidx.fragment.app.viewModels
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.lifecycleScope
import androidx.lifecycle.repeatOnLifecycle
import androidx.viewpager2.widget.ViewPager2
import by.kirich1409.viewbindingdelegate.viewBinding
import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.launch
import ru.maxi.mobile.R
import ru.maxi.mobile.base.ui.MvvmBaseFragment
import ru.maxi.mobile.common.utils.android.screenArgs
import ru.maxi.mobile.databinding.FragmentBonusPointsContainerBinding
import ru.maxi.mobile.feature.bonusPoints.BonusPointsScreens
import ru.maxi.mobile.feature.bonusPoints.ui.container.model.BonusPointsTabPage
import ru.maxi.mobile.feature.bonusPoints.ui.container.model.BonusPointsViewState
import ru.maxi.mobile.uikit.utils.lifecycleAwareLazy

/**

[Fragment] контейнера для баллов
*/
@AndroidEntryPoint
class BonusPointsContainerFragment : MvvmBaseFragment(R.layout.fragment_bonus_points_container) { private val viewBinding by viewBinding(FragmentBonusPointsContainerBinding::bind) private val screenArgs by screenArgs(BonusPointsContainerArgs) private val viewModel by viewModels() private val pageAdapter by lifecycleAwareLazy {
BonusPointsTabAdapter(this)
} override val analyticsName: String? = null private var isFirstOpen = true private val pageChangeListener = object : ViewPager2.OnPageChangeCallback() {
override fun onPageSelected(position: Int) {
if (isFirstOpen) {
val tabPosition = when (screenArgs.tabId) {
BALANCE_TAB -> 0
INFO_TAB -> 1
else -> throw IllegalArgumentException("invalid tabId ${screenArgs.tabId}")
}
// Log.d("TESTING", "tabPosition $tabPosition")
viewModel.updateCurrentTab(screenArgs.tabId, tabPosition)
isFirstOpen = false
} else {
val tab = when (position) {
0 -> BALANCE_TAB
1 -> INFO_TAB
else -> throw IllegalArgumentException("invalid tabId ${screenArgs.tabId}")
}

Log.d("TESTING", "tab $tab")
viewModel.updateCurrentTab(tab, position)
}
}
} private val pageList: MutableList = mutableListOf(
BonusPointsTabPage(BonusPointsScreens.BonusPointsHistoryScreen()),
BonusPointsTabPage(BonusPointsScreens.InfoScreen()),
) override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
actionBarManager.setTitle(R.string.bonus_points_screen_title)
actionBarManager.showBackButton()

with(viewBinding) {
tabsContainer.registerOnPageChangeCallback(pageChangeListener)
tabsContainer.adapter = pageAdapter
pageAdapter.pages = pageList

tabsButtonContainer.setOnButtonCheckedListener { buttonId ->
when (buttonId) {
BALANCE_TAB -> {
viewModel.updateCurrentTab(BALANCE_TAB, 0)
}

INFO_TAB -> {
viewModel.updateCurrentTab(INFO_TAB, 1)
}
}
}
}
with(viewLifecycleOwner) {
lifecycleScope.launch {
repeatOnLifecycle(Lifecycle.State.STARTED) {
launch { viewModel.viewState.collect(::onViewStateChange) }
}
}
}
} override fun onDestroyView() {
super.onDestroyView()
viewBinding.tabsContainer.unregisterOnPageChangeCallback(pageChangeListener)
} private fun onViewStateChange(state: BonusPointsViewState) {
with(viewBinding) {
Log.d("TESTING", "$isFirstOpen")
Log.d("TESTING", "${state.tabButtonId}")
tabsContainer.setCurrentItem(state.currentPosition, !isFirstOpen)
tabsButtonContainer.check(state.tabButtonId)
}
} companion object {
val BALANCE_TAB = R.id.balance_tab
val INFO_TAB = R.id.info_tab
}
}
package ru.maxi.mobile.feature.bonusPoints.ui.container

import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentManager
import androidx.recyclerview.widget.DiffUtil
import androidx.viewpager2.adapter.FragmentStateAdapter
import ru.maxi.mobile.feature.bonusPoints.ui.container.model.BonusPointsTabPage

/**

Адаптер страниц для контейнера баллов
*/
class BonusPointsTabAdapter(fragment: Fragment) : FragmentStateAdapter(fragment) { private val fragmentManager: FragmentManager = fragment.childFragmentManager /** Список страниц */
var pages: List = emptyList()
set(value) {
val oldValue = field
field = value
DiffUtil.calculateDiff(DiffCallback(oldValue, value), false)
.dispatchUpdatesTo(this)
}
override fun getItemCount(): Int = pages.size override fun getItemId(position: Int): Long {
val page = pages[position]
return page.id.hashCode().toLong()
} override fun containsItem(itemId: Long): Boolean {
return pages.any { it.id.hashCode().toLong() == itemId }
} override fun createFragment(position: Int): Fragment {
val page = pages[position]
return page.screen.createFragment(fragmentManager.fragmentFactory)
}
}

private class DiffCallback(
private val oldItems: List,
private val newItems: List,
) : DiffUtil.Callback() {


override fun getOldListSize(): Int = oldItems.size
override fun getNewListSize(): Int = newItems.size

override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
    val oldItem = oldItems[oldItemPosition]
    val newItem = newItems[newItemPosition]

    return oldItem.id == newItem.id
}

override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
    val oldItem = oldItems[oldItemPosition]
    val newItem = newItems[newItemPosition]

    return oldItem == newItem
}
}
package ru.maxi.mobile.feature.bonusPoints.ui.container

import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import dagger.hilt.android.lifecycle.HiltViewModel
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.SharingStarted
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.flow.update
import ru.maxi.mobile.R
import ru.maxi.mobile.feature.bonusPoints.ui.container.model.BonusPointsViewState
import javax.inject.Inject

/**

[ViewModel] для контейнера баллов
*/
@HiltViewModel
class BonusPointsContainerViewModel @Inject constructor() : ViewModel() { private val _viewState = MutableStateFlow(BonusPointsViewState(tabButtonId = R.id.balance_tab, currentPosition = 0)) /** Состояние экрана /
val viewState: Flow = _viewState.asStateFlow()
.stateIn(viewModelScope, SharingStarted.Lazily, _viewState.value)
/*
Обновить текущий таб
@param tabButtonId идентификатор кнопки таба
@param currentPosition позиция таба
*/
fun updateCurrentTab(tabButtonId: Int, currentPosition: Int) {
val state = BonusPointsViewState(tabButtonId, currentPosition)
_viewState.update { state }
}
}