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SmartToolFactorySmartToolFactory
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add bottom navigation to app with blank fragments
1 parent a60f590 commit 7c249c2

7 files changed

Lines changed: 206 additions & 1 deletion

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‎app/src/main/java/com/smarttoolfactory/propertyfindar/MainFragment.kt‎

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package com.smarttoolfactory.propertyfindar
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import android.os.Bundle
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import android.view.View
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import com.smarttoolfactory.core.ui.fragment.DynamicNavigationFragment
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import com.smarttoolfactory.propertyfindar.databinding.FragmentMainBinding
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import com.smarttoolfactory.propertyfindar.ui.BottomNavigationFragmentStateAdapter
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class MainFragment : DynamicNavigationFragment<FragmentMainBinding>() {
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override fun getLayoutRes(): Int = R.layout.fragment_main
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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val binding = dataBinding!!
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val viewPager2 = binding.viewPager
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val bottomNavigationView = binding.bottomNav
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// Cancel ViewPager swipe
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viewPager2.isUserInputEnabled = false
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// Set viewpager adapter
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viewPager2.adapter =
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BottomNavigationFragmentStateAdapter(childFragmentManager, viewLifecycleOwner.lifecycle)
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// Listen bottom navigation tabs change
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bottomNavigationView.setOnNavigationItemSelectedListener {
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when (it.itemId) {
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R.id.nav_graph_dfm_home_start -> {
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viewPager2.setCurrentItem(0, false)
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return@setOnNavigationItemSelectedListener true
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}
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R.id.nav_graph_dfm_favorites_start -> {
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viewPager2.setCurrentItem(1, false)
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return@setOnNavigationItemSelectedListener true
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}
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R.id.nav_graph_dfm_notification_start -> {
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viewPager2.setCurrentItem(2, false)
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return@setOnNavigationItemSelectedListener true
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}
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else -> {
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viewPager2.setCurrentItem(3, false)
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return@setOnNavigationItemSelectedListener true
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}
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}
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}
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false
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}
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override fun onDestroyView() {
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val viewPager2 = dataBinding?.viewPager
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/*
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Without setting ViewPager2 Adapter it causes memory leak
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https://stackoverflow.com/questions/62851425/viewpager2-inside-a-fragment-leaks-after-replacing-the-fragment-its-in-by-navig
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*/
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viewPager2?.let {
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it.adapter = null
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}
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super.onDestroyView()
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}
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}

‎app/src/main/java/com/smarttoolfactory/propertyfindar/ui/BottomNavigationFragmentStateAdapter.kt‎

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package com.smarttoolfactory.propertyfindar.ui
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import androidx.fragment.app.Fragment
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import androidx.fragment.app.FragmentContainerView
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import androidx.fragment.app.FragmentManager
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import androidx.lifecycle.Lifecycle
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import com.smarttoolfactory.core.ui.adapter.NavigableFragmentStateAdapter
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import com.smarttoolfactory.core.ui.fragment.navhost.NavHostContainerFragment
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import com.smarttoolfactory.propertyfindar.R
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/**
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* FragmentStateAdapter to contain ViewPager2 fragments inside another fragment which uses
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* wrapper layouts that contain [FragmentContainerView]
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*
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* * 🔥 Create FragmentStateAdapter with viewLifeCycleOwner instead of Fragment to make sure
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* that it lives between [Fragment.onCreateView] and [Fragment.onDestroyView] while [View] is alive
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*
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* * https://stackoverflow.com/questions/61779776/leak-canary-detects-memory-leaks-for-tablayout-with-viewpager2
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*/
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class BottomNavigationFragmentStateAdapter(fragmentManager: FragmentManager, lifecycle: Lifecycle) :
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NavigableFragmentStateAdapter(fragmentManager, lifecycle) {
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override fun getItemCount(): Int = 4
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override fun createFragment(position: Int): Fragment {
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return when (position) {
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0 -> NavHostContainerFragment.createNavHostContainerFragment(
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R.layout.fragment_navhost_home,
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R.id.nested_nav_host_fragment_home
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)
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// Vertical NavHost Post Fragment Container
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1 -> NavHostContainerFragment.createNavHostContainerFragment(
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R.layout.fragment_navhost_favorites,
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R.id.nested_nav_host_fragment_favorites
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)
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// Horizontal NavHost Post Fragment Container
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2 -> NavHostContainerFragment.createNavHostContainerFragment(
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R.layout.fragment_navhost_notification,
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R.id.nested_nav_host_fragment_notification
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)
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else -> NavHostContainerFragment.createNavHostContainerFragment(
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R.layout.fragment_navhost_account,
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R.id.nested_nav_host_fragment_account
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)
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}
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}
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}

‎app/src/main/res/layout/fragment_navhost_account.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<layout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto">
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<androidx.constraintlayout.widget.ConstraintLayout
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<androidx.fragment.app.FragmentContainerView
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android:id="@+id/nested_nav_host_fragment_account"
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android:name="androidx.navigation.dynamicfeatures.fragment.DynamicNavHostFragment"
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android:layout_width="0dp"
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android:layout_height="0dp"
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app:defaultNavHost="true"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintLeft_toLeftOf="parent"
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app:layout_constraintRight_toRightOf="parent"
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app:layout_constraintTop_toTopOf="parent"
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app:navGraph="@navigation/nav_graph_dfm_account_start" />
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</androidx.constraintlayout.widget.ConstraintLayout>
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</layout>

‎app/src/main/res/layout/fragment_navhost_favorites.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<layout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto">
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<androidx.constraintlayout.widget.ConstraintLayout
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<androidx.fragment.app.FragmentContainerView
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android:id="@+id/nested_nav_host_fragment_favorites"
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android:name="androidx.navigation.dynamicfeatures.fragment.DynamicNavHostFragment"
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android:layout_width="0dp"
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android:layout_height="0dp"
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app:defaultNavHost="true"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintLeft_toLeftOf="parent"
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app:layout_constraintRight_toRightOf="parent"
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app:layout_constraintTop_toTopOf="parent"
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app:navGraph="@navigation/nav_graph_dfm_favorites_start" />
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</androidx.constraintlayout.widget.ConstraintLayout>
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</layout>

‎app/src/main/res/layout/fragment_navhost_home.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<layout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto">
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<androidx.constraintlayout.widget.ConstraintLayout
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<androidx.fragment.app.FragmentContainerView
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android:id="@+id/nested_nav_host_fragment_home"
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android:name="androidx.navigation.dynamicfeatures.fragment.DynamicNavHostFragment"
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android:layout_width="0dp"
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android:layout_height="0dp"
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app:defaultNavHost="true"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintLeft_toLeftOf="parent"
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app:layout_constraintRight_toRightOf="parent"
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app:layout_constraintTop_toTopOf="parent"
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app:navGraph="@navigation/nav_graph_dfm_home_start" />
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</androidx.constraintlayout.widget.ConstraintLayout>
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</layout>

‎app/src/main/res/layout/fragment_navhost_notification.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<layout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto">
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<androidx.constraintlayout.widget.ConstraintLayout
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<androidx.fragment.app.FragmentContainerView
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android:id="@+id/nested_nav_host_fragment_notification"
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android:name="androidx.navigation.dynamicfeatures.fragment.DynamicNavHostFragment"
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android:layout_width="0dp"
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android:layout_height="0dp"
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app:defaultNavHost="true"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintLeft_toLeftOf="parent"
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app:layout_constraintRight_toRightOf="parent"
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app:layout_constraintTop_toTopOf="parent"
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app:navGraph="@navigation/nav_graph_dfm_notification_start" />
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</androidx.constraintlayout.widget.ConstraintLayout>
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</layout>

‎app/src/main/res/menu/menu_bottom.xml‎

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android:title="Home" />
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<item
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android:id="@+id/nav_graph_dfm_favorite_start"
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android:id="@+id/nav_graph_dfm_favorites_start"
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android:icon="@drawable/ic_baseline_favorite_24"
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android:title="Dashboard" />
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