Pfeifferonis/Store.MobileApp
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added a ViewPager2 to switch between page fragments

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added a PagerAdapter (FragmentStateAdapter) to provide the fragments for the ViewPager2
added the necessary fragments
added the necessary listeners for the TabLayout and the ViewPager2
This commit is contained in:
Christopher
2024-05-31 20:16:39 +02:00
parent 3544915f89
commit f9570806f9
7 changed files with 226 additions and 9 deletions
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20
app/src/main/java/de/chrissthecoder/store/adapter/DashboardFragmentPagerAdapter.kt Normal file
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@@ -0,0 +1,20 @@
package de.chrissthecoder.store.adapter
import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentManager
import androidx.lifecycle.Lifecycle
import androidx.viewpager2.adapter.FragmentStateAdapter
import de.chrissthecoder.store.ui.dashboard.tabfragment.ShoppinglistFragment
import de.chrissthecoder.store.ui.dashboard.tabfragment.UnderstockFragment
class DashboardFragmentPagerAdapter(manager: FragmentManager, lifecycle: Lifecycle) : FragmentStateAdapter(manager, lifecycle) {
override fun getItemCount() : Int {
return 2
}
override fun createFragment(position: Int) : Fragment {
return if(position == 0) { ShoppinglistFragment() }
else { UnderstockFragment() }
}
}

45
app/src/main/java/de/chrissthecoder/store/ui/dashboard/DashboardFragment.kt
View File

@@ -6,26 +6,53 @@ import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.lifecycle.ViewModelProvider
import androidx.viewpager2.widget.ViewPager2
import androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
import com.google.android.material.tabs.TabLayout
import com.google.android.material.tabs.TabLayout.OnTabSelectedListener
import de.chrissthecoder.store.adapter.DashboardFragmentPagerAdapter
import de.chrissthecoder.store.databinding.FragmentDashboardBinding
class DashboardFragment : Fragment() {
private var _binding: FragmentDashboardBinding? = null
// This property is only valid between onCreateView and
// onDestroyView.
private val binding get() = _binding!!
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
val dashboardViewModel = ViewModelProvider(this).get(DashboardViewModel::class.java)
private lateinit var tabLayout: TabLayout
private lateinit var viewPager: ViewPager2
private lateinit var adapter: DashboardFragmentPagerAdapter
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?) : View {
_binding = FragmentDashboardBinding.inflate(inflater, container, false)
val root: View = binding.root
val dashboardViewModel = ViewModelProvider(this).get(DashboardViewModel::class.java)
tabLayout = binding.tabLayout
viewPager = binding.viewPager
adapter = DashboardFragmentPagerAdapter(parentFragmentManager, lifecycle)
viewPager.adapter = adapter
tabLayout.addOnTabSelectedListener(object : OnTabSelectedListener {
override fun onTabSelected(tab: TabLayout.Tab?) {
if (tab != null) {
viewPager.currentItem = tab.position
}
}
override fun onTabUnselected(tab: TabLayout.Tab?) { }
override fun onTabReselected(tab: TabLayout.Tab?) { }
})
viewPager.registerOnPageChangeCallback(object : OnPageChangeCallback() {
override fun onPageSelected(position: Int) {
super.onPageSelected(position)
tabLayout.selectTab(tabLayout.getTabAt(position))
}
})
return root
}

60
app/src/main/java/de/chrissthecoder/store/ui/dashboard/tabfragment/ShoppinglistFragment.kt Normal file
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@@ -0,0 +1,60 @@
package de.chrissthecoder.store.ui.dashboard.tabfragment
import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import de.chrissthecoder.store.R
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private const val ARG_PARAM1 = "param1"
private const val ARG_PARAM2 = "param2"
/**
* A simple [Fragment] subclass.
* Use the [ShoppinglistFragment.newInstance] factory method to
* create an instance of this fragment.
*/
class ShoppinglistFragment : Fragment() {
// TODO: Rename and change types of parameters
private var param1: String? = null
private var param2: String? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
arguments?.let {
param1 = it.getString(ARG_PARAM1)
param2 = it.getString(ARG_PARAM2)
}
}
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_shoppinglist, container, false)
}
companion object {
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment ShoppinglistFragment.
*/
// TODO: Rename and change types and number of parameters
@JvmStatic
fun newInstance(param1: String, param2: String) =
ShoppinglistFragment().apply {
arguments = Bundle().apply {
putString(ARG_PARAM1, param1)
putString(ARG_PARAM2, param2)
}
}
}
}

60
app/src/main/java/de/chrissthecoder/store/ui/dashboard/tabfragment/UnderstockFragment.kt Normal file
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@@ -0,0 +1,60 @@
package de.chrissthecoder.store.ui.dashboard.tabfragment
import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import de.chrissthecoder.store.R
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private const val ARG_PARAM1 = "param1"
private const val ARG_PARAM2 = "param2"
/**
* A simple [Fragment] subclass.
* Use the [UnderstockFragment.newInstance] factory method to
* create an instance of this fragment.
*/
class UnderstockFragment : Fragment() {
// TODO: Rename and change types of parameters
private var param1: String? = null
private var param2: String? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
arguments?.let {
param1 = it.getString(ARG_PARAM1)
param2 = it.getString(ARG_PARAM2)
}
}
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_understock, container, false)
}
companion object {
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment UnderstockFragment.
*/
// TODO: Rename and change types and number of parameters
@JvmStatic
fun newInstance(param1: String, param2: String) =
UnderstockFragment().apply {
arguments = Bundle().apply {
putString(ARG_PARAM1, param1)
putString(ARG_PARAM2, param2)
}
}
}
}

12
app/src/main/res/layout/fragment_dashboard.xml
View File

@@ -7,6 +7,7 @@
tools:context=".ui.dashboard.DashboardFragment">
<com.google.android.material.tabs.TabLayout
android:id="@+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
@@ -24,4 +25,15 @@
android:text="@string/tab_understock" />
</com.google.android.material.tabs.TabLayout>
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/viewPager"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tabLayout" />
</androidx.constraintlayout.widget.ConstraintLayout>

19
app/src/main/res/layout/fragment_shoppinglist.xml Normal file
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@@ -0,0 +1,19 @@
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.dashboard.tabfragment.ShoppinglistFragment">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Einkaufszettel"
android:textAlignment="center"
android:textSize="32sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.5" />
</androidx.constraintlayout.widget.ConstraintLayout>

19
app/src/main/res/layout/fragment_understock.xml Normal file
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@@ -0,0 +1,19 @@
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.dashboard.tabfragment.UnderstockFragment">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Minderbestand"
android:textAlignment="center"
android:textSize="32sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.5" />
</androidx.constraintlayout.widget.ConstraintLayout>