Changement des listes menu et session

app/build.gradle.kts

@@ -29,7 +29,6 @@ android {
     kotlinOptions {
         jvmTarget = "1.8"
     }
-    buildToolsVersion = "33.0.1"
     buildFeatures {
         viewBinding = true
     }
@@ -38,16 +37,21 @@ android {
 dependencies {
     implementation("androidx.core:core-ktx:1.12.0")
     implementation("androidx.appcompat:appcompat:1.6.1")
-    implementation("com.google.android.material:material:1.10.0")
+    implementation("com.google.android.material:material:1.11.0")
     implementation("androidx.constraintlayout:constraintlayout:2.1.4")
-    implementation("androidx.navigation:navigation-fragment-ktx:2.7.5")
-    implementation("androidx.navigation:navigation-ui-ktx:2.7.5")
-    implementation("androidx.annotation:annotation:1.7.0")
+    implementation("androidx.navigation:navigation-fragment-ktx:2.7.6")
+    implementation("androidx.navigation:navigation-ui-ktx:2.7.6")
+    implementation("androidx.annotation:annotation:1.7.1")
     implementation("androidx.lifecycle:lifecycle-livedata-ktx:2.6.2")
     implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.2")
     implementation("androidx.legacy:legacy-support-v4:1.0.0")
-    implementation("androidx.recyclerview:recyclerview:1.3.0")
+    implementation("androidx.recyclerview:recyclerview:1.3.2")
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+
+    // Retrofit and Moshi for API requests.
+    implementation("com.squareup.retrofit2:retrofit:2.9.0")
+    implementation("com.squareup.retrofit2:converter-moshi:2.9.0")
+    implementation("com.squareup.moshi:moshi-kotlin:1.13.0")
 }

app/src/main/java/com/example/palto/PaltoActivity.kt

@@ -1,18 +1,20 @@
 package com.example.palto
 
 import android.nfc.NfcAdapter
-import android.nfc.Tag
 import android.os.Bundle
 import android.util.Log
 import androidx.appcompat.app.AppCompatActivity
 import androidx.activity.viewModels
+import com.example.palto.ui.NfcViewModel
+import com.example.palto.ui.UserViewModel
 
 
 class PaltoActivity : AppCompatActivity() {
 
     private var nfcAdapter: NfcAdapter? = null
 
-    private val paltoViewModel: PaltoViewModel by viewModels()
+    private val nfcViewModel: NfcViewModel by viewModels()
+    private val userViewModel: UserViewModel by viewModels()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -32,11 +34,6 @@ class PaltoActivity : AppCompatActivity() {
         }
 
         setContentView(R.layout.activity_palto)
-        /*
-        val url = URL("https://www.faraphel.fr/palto/api/auth/token/")
-        val connection = url.openConnection()
-        val auth_data = Json.decodeFromString(connection.content)
-        */
     }
 
     override fun onResume() {
@@ -44,7 +41,7 @@ class PaltoActivity : AppCompatActivity() {
 
         nfcAdapter?.enableReaderMode(
             this,
-            paltoViewModel.tagLiveData::postValue,
+            nfcViewModel.tag::postValue,
             NfcAdapter.FLAG_READER_NFC_A or NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK,
             null
         )
@@ -57,8 +54,10 @@ class PaltoActivity : AppCompatActivity() {
         nfcAdapter?.disableReaderMode(this)
     }
 
+    /*
     @OptIn(ExperimentalStdlibApi::class)
     fun processTag(tag: Tag) {
         Log.d("NFC", "Tag ID : " + tag.id.toHexString())
     }
+     */
 }

app/src/main/java/com/example/palto/data/repository/AttendanceRepository.kt

@@ -1,10 +1,10 @@
 package com.example.palto.data.repository
 
-import com.example.palto.data.network.ServerDataSource
+import com.example.palto.data.network.PaltoApiService
 
 /**
  *
  */
-class AttendanceRepository(val dataSource: ServerDataSource) {
+class AttendanceRepository() {
     // private val cards
 }

app/src/main/java/com/example/palto/data/repository/SessionRepository.kt

@@ -1,10 +1,10 @@
 package com.example.palto.data.repository
 
-import com.example.palto.data.network.ServerDataSource
+import com.example.palto.data.network.PaltoApiService
 
 /**
  *
  */
-class SessionRepository(val dataSource: ServerDataSource) {
+class SessionRepository(val dataSource: PaltoApiService) {
     // private val cards
 }

app/src/main/java/com/example/palto/domain/Attendance.kt

@@ -1,4 +1,4 @@
-package com.example.palto.model
+package com.example.palto.domain
 import java.io.Serializable
 
 /**

app/src/main/java/com/example/palto/domain/Card.kt

@@ -1,5 +1,4 @@
-package com.example.palto.model
-import java.io.Serializable
+package com.example.palto.domain
 
 data class Card(
     val id: String,

app/src/main/java/com/example/palto/domain/Session.kt

@@ -1,4 +1,4 @@
-package com.example.palto.model
+package com.example.palto.domain
 import java.io.Serializable
 
 /**
@@ -6,4 +6,4 @@ import java.io.Serializable
  */
 data class Session(
     val id: String
-) : Serializable
+)

app/src/main/java/com/example/palto/ui/NfcViewModel.kt

@@ -0,0 +1,14 @@
+package com.example.palto.ui
+
+import android.nfc.Tag
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.example.palto.domain.User
+
+class NfcViewModel: ViewModel() {
+    val tag = MutableLiveData<Tag>()
+
+    private var _user : MutableLiveData<User> = MutableLiveData<User>()
+    val user : LiveData<User> = _user
+}

app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListFragment.kt

@@ -1,69 +0,0 @@
-package com.example.palto.ui.attendanceList
-
-import android.nfc.NfcAdapter
-import android.nfc.Tag
-import android.os.Bundle
-import android.util.Log
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import androidx.fragment.app.Fragment
-import androidx.fragment.app.activityViewModels
-import androidx.lifecycle.Observer
-import androidx.navigation.navGraphViewModels
-import com.example.palto.PaltoViewModel
-import com.example.palto.R
-import com.example.palto.databinding.FragmentAttendanceListBinding
-
-/**
- * A fragment representing a list of attendances.
- */
-class AttendanceListFragment : Fragment() {
-
-    private val attendanceListViewModel: AttendanceListViewModel by
-        navGraphViewModels(R.id.nav_graph) { AttendanceListViewModel.Factory }
-
-    private val paltoViewModel: PaltoViewModel by
-        activityViewModels()
-
-    private var _binding: FragmentAttendanceListBinding? = null
-    // This property is only valid between onCreateView and onDestroyView
-    private val binding get() = _binding!!
-
-    /**
-     * Only inflate the view.
-     */
-    override fun onCreateView(
-        inflater: LayoutInflater,
-        container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View? {
-
-        _binding = FragmentAttendanceListBinding.inflate(inflater, container, false)
-        return binding.root
-    }
-
-    /**
-     * Logic on the returned view of onCreateView.
-     */
-    override fun onViewCreated(
-        view: View,
-        savedInstanceState: Bundle?
-    ) {
-        super.onViewCreated(view, savedInstanceState)
-
-        // Set the adapter of the view for managing automatically the list of items on the screen.
-        val adapter = AttendanceListAdapter()
-        binding.list.adapter = adapter
-        attendanceListViewModel.cardsLiveData.observe(viewLifecycleOwner) {
-            Log.d("NFC", "A card has been had to the list")
-            adapter.submitList(it)
-        }
-
-        // Set the listener for a new NFC tag.
-        paltoViewModel.tagLiveData.observe(viewLifecycleOwner) {
-            Log.d("NFC", "tag observer has been notified")
-            attendanceListViewModel.insertCard(it)
-        }
-    }
-}

app/src/main/java/com/example/palto/ui/menu/MenuAdapter.kt

@@ -0,0 +1,69 @@
+package com.example.palto.ui.menu
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.DiffUtil
+import androidx.recyclerview.widget.ListAdapter
+import androidx.recyclerview.widget.RecyclerView
+import com.example.palto.databinding.FragmentMenuItemBinding
+import com.example.palto.domain.Session
+
+/**
+ * A [ListAdapter] that can display [Session] items.
+ */
+class MenuAdapter :
+    ListAdapter<Session, MenuAdapter.ViewHolder>(SessionDiffCallback) {
+
+        /*
+    class ViewHolder(binding: FragmentSessionItemBinding) :
+        RecyclerView.ViewHolder(binding.root) {
+
+        val idView: TextView = binding.itemNumber
+        val contentView: TextView = binding.content
+
+        override fun toString(): String {
+            return super.toString() + " '" + contentView.text + "'"
+        }
+    }
+         */
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        return ViewHolder(
+            FragmentMenuItemBinding.inflate(
+                LayoutInflater.from(parent.context),
+                parent,
+                false
+            )
+        )
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val item = getItem(position)
+        holder.idView.text = position.toString()
+        holder.contentView.text = item.id
+    }
+
+    //override fun getItemCount(): Int = values.size
+
+    inner class ViewHolder(
+        binding: FragmentMenuItemBinding
+    ) : RecyclerView.ViewHolder(binding.root) {
+
+        val idView: TextView = binding.itemNumber
+        val contentView: TextView = binding.content
+        override fun toString(): String {
+            return super.toString() + " '" + idView.text + contentView.text + "'"
+        }
+    }
+}
+
+object SessionDiffCallback : DiffUtil.ItemCallback<Session>() {
+    override fun areItemsTheSame(oldItem: Session, newItem: Session): Boolean {
+        return oldItem == newItem
+    }
+
+    override fun areContentsTheSame(oldItem: Session, newItem: Session): Boolean {
+        return oldItem.id == newItem.id
+    }
+}

app/src/main/java/com/example/palto/ui/menu/MenuFragment.kt

@@ -0,0 +1,45 @@
+package com.example.palto.ui.menu
+
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import com.example.palto.databinding.FragmentMenuListBinding
+import com.example.palto.databinding.FragmentSessionListBinding
+
+/**
+ * A fragment representing a list of Sessions.
+ */
+class MenuFragment : Fragment() {
+
+    private val menuViewModel: MenuViewModel by viewModels()
+
+    private var _binding: FragmentMenuListBinding? = 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? {
+        _binding = FragmentMenuListBinding.inflate(inflater, container, false)
+
+        val adapter = MenuAdapter()
+        binding.menuList.adapter = MenuAdapter()
+        menuViewModel.sessions.observe(viewLifecycleOwner) {
+            Log.d("PALTO", "A session has been created")
+            adapter.submitList(it)
+        }
+
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        menuViewModel.createSession()
+    }
+}

app/src/main/java/com/example/palto/ui/menu/MenuViewModel.kt

@@ -0,0 +1,21 @@
+package com.example.palto.ui.menu
+
+import android.util.Log
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.example.palto.data.repository.LoginRepository
+import com.example.palto.domain.Session
+
+class MenuViewModel() : ViewModel() {
+
+    private var _sessions = MutableLiveData<List<Session>>(emptyList())
+    val sessions: LiveData<List<Session>> = _sessions
+
+    fun createSession() {
+        val session = Session(
+            id = "aahh"
+        )
+        _sessions.value = (_sessions.value ?: emptyList()) + session
+    }
+}

app/src/main/java/com/example/palto/ui/session/SessionAdapter.kt

@@ -1,4 +1,4 @@
-package com.example.palto.ui.attendanceList
+package com.example.palto.ui.session
 
 import android.view.LayoutInflater
 import android.view.ViewGroup
@@ -6,22 +6,18 @@ import android.widget.TextView
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.ListAdapter
 import androidx.recyclerview.widget.RecyclerView
-import com.example.palto.databinding.FragmentAttendanceItemBinding
-import com.example.palto.model.Card
+import com.example.palto.databinding.FragmentSessionItemBinding
+import com.example.palto.domain.Card
 
 /**
- *
+ * A [ListAdapter] that can display [Card] items.
  */
-class AttendanceListAdapter :
-    ListAdapter<Card, AttendanceListAdapter.ViewHolder>(CardDiffCallback) {
-
-    override fun onCreateViewHolder(
-        parent: ViewGroup,
-        viewType: Int
-    ): ViewHolder {
+class SessionAdapter :
+    ListAdapter<Card, SessionAdapter.ViewHolder>(CardDiffCallback) {
 
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         return ViewHolder(
-            FragmentAttendanceItemBinding.inflate(
+            FragmentSessionItemBinding.inflate(
                 LayoutInflater.from(parent.context),
                 parent,
                 false
@@ -37,7 +33,7 @@ class AttendanceListAdapter :
     }
 
     inner class ViewHolder(
-        binding: FragmentAttendanceItemBinding
+        binding: FragmentSessionItemBinding
     ) : RecyclerView.ViewHolder(binding.root) {
 
         val cardId: TextView = binding.cardId

app/src/main/java/com/example/palto/ui/session/SessionFragment.kt

@@ -0,0 +1,56 @@
+package com.example.palto.ui.session
+
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import androidx.navigation.navGraphViewModels
+import com.example.palto.ui.NfcViewModel
+import com.example.palto.R
+import com.example.palto.databinding.FragmentSessionListBinding
+
+/**
+ * A fragment representing a list of attendances.
+ */
+class SessionFragment : Fragment() {
+
+    private val sessionViewModel: SessionViewModel by
+        navGraphViewModels(R.id.nav_graph) { SessionViewModel.Factory }
+
+    private val nfcViewModel: NfcViewModel by
+        activityViewModels()
+
+    private var _binding: FragmentSessionListBinding? = null
+    // This property is only valid between onCreateView and onDestroyView
+    private val binding get() = _binding!!
+
+    /**
+     * Have the fragment instantiate the user interface.
+     */
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        _binding = FragmentSessionListBinding.inflate(inflater, container, false)
+
+        // Set the adapter of the view for managing automatically the list of items on the screen.
+        val adapter = SessionAdapter()
+        binding.sessionList.adapter = adapter
+        sessionViewModel.cards.observe(viewLifecycleOwner) {
+            Log.d("NFC", "A card has been had to the list")
+            adapter.submitList(it)
+        }
+
+        // Set the listener for a new NFC tag.
+        nfcViewModel.tag.observe(viewLifecycleOwner) {
+            Log.d("NFC", "tag observer has been notified")
+            sessionViewModel.insertCard(it)
+        }
+
+        return binding.root
+    }
+}

app/src/main/java/com/example/palto/ui/session/SessionViewModel.kt

@@ -1,4 +1,4 @@
-package com.example.palto.ui.attendanceList
+package com.example.palto.ui.session
 
 import android.nfc.Tag
 import android.util.Log
@@ -6,18 +6,18 @@ import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
-import com.example.palto.data.network.ServerDataSource
 import com.example.palto.data.repository.AttendanceRepository
-import com.example.palto.model.Card
+import com.example.palto.domain.Card
 
 /**
  * ViewModel of a session which has a list of attendances.
  */
-class AttendanceListViewModel(
+class SessionViewModel(
     private val attendanceRepository: AttendanceRepository
 ) : ViewModel() {
 
-    val cardsLiveData: MutableLiveData<List<Card>> = MutableLiveData(emptyList())
+    private val _cards: MutableLiveData<List<Card>> = MutableLiveData(emptyList())
+    val cards = _cards as LiveData<List<Card>>
 
     fun insertCard(tag: Tag) {
         val card = Card(
@@ -26,12 +26,12 @@ class AttendanceListViewModel(
             "tmp",
             "tmp"
         )
-        cardsLiveData.value = (cardsLiveData.value ?: emptyList()) + card
+        _cards.value = (_cards.value ?: emptyList()) + card
         Log.d("NFC", "view model: A card has been had to the list")
     }
 
     /**
-     * ViewModel Factory.
+     *  ViewModel Factory.
      */
     companion object {
 
@@ -40,8 +40,8 @@ class AttendanceListViewModel(
             override fun <T : ViewModel> create(
                 modelClass: Class<T>
             ): T {
-                return AttendanceListViewModel(
-                    AttendanceRepository(ServerDataSource())
+                return SessionViewModel(
+                    AttendanceRepository()
                 ) as T
             }
         }

app/src/main/java/com/example/palto/ui/sessionList/SessionListAdapter.kt

@@ -1,44 +0,0 @@
-package com.example.palto.ui.sessionList
-
-import androidx.recyclerview.widget.RecyclerView
-import android.view.LayoutInflater
-import android.view.ViewGroup
-import android.widget.TextView
-
-import com.example.palto.ui.sessionList.placeholder.PlaceholderContent.PlaceholderItem
-import com.example.palto.databinding.FragmentSessionItemBinding
-
-/**
- * [RecyclerView.Adapter] that can display a [PlaceholderItem].
- */
-class SessionListAdapter(private val values: List<PlaceholderItem>) :
-    RecyclerView.Adapter<SessionListAdapter.ViewHolder>() {
-
-    class ViewHolder(binding: FragmentSessionItemBinding) :
-        RecyclerView.ViewHolder(binding.root) {
-
-        val idView: TextView = binding.itemNumber
-        val contentView: TextView = binding.content
-
-        override fun toString(): String {
-            return super.toString() + " '" + contentView.text + "'"
-        }
-    }
-
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val view = FragmentSessionItemBinding.inflate(
-            LayoutInflater.from(parent.context),
-            parent,
-            false
-        )
-        return ViewHolder(view)
-    }
-
-    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val item = values[position]
-        holder.idView.text = item.id
-        holder.contentView.text = item.content
-    }
-
-    override fun getItemCount(): Int = values.size
-}

app/src/main/java/com/example/palto/ui/sessionList/SessionListFragment.kt

@@ -1,31 +0,0 @@
-package com.example.palto.ui.sessionList
-
-import android.os.Bundle
-import androidx.fragment.app.Fragment
-import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import com.example.palto.R
-import com.example.palto.ui.sessionList.placeholder.PlaceholderContent
-
-/**
- * A fragment representing a list of Sessions.
- */
-class SessionListFragment : Fragment() {
-
-    override fun onCreateView(
-        inflater: LayoutInflater,
-         container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View? {
-        val view = inflater.inflate(R.layout.fragment_session_list, container, false)
-
-        if (view is RecyclerView) {
-            view.layoutManager = LinearLayoutManager(context)
-            view.adapter = SessionListAdapter(PlaceholderContent.ITEMS)
-        }
-        return view
-    }
-}

app/src/main/java/com/example/palto/ui/sessionList/SessionListViewModel.kt

@@ -1,14 +0,0 @@
-package com.example.palto.ui.sessionList
-
-import androidx.lifecycle.ViewModel
-import com.example.palto.data.repository.LoginRepository
-
-class SessionListViewModel(private val loginRepository: LoginRepository) : ViewModel() {
-    /*
-    private val _loginForm = MutableLiveData<LoginFormState>()
-    val loginFormState: LiveData<LoginFormState> = _loginForm
-
-    private val _loginResult = MutableLiveData<LoginResult>()
-    val loginResult: LiveData<LoginResult> = _loginResult
-    */
-}

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

@@ -5,7 +5,14 @@
     android:orientation="horizontal">
 
     <TextView
-        android:id="@+id/card_̤id"
+        android:id="@+id/item_number"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/text_margin"
+        android:textAppearance="?attr/textAppearanceListItem" />
+
+    <TextView
+        android:id="@+id/content"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_margin="@dimen/text_margin"

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

@@ -2,12 +2,12 @@
 <androidx.recyclerview.widget.RecyclerView 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:id="@+id/list"
-    android:name="com.example.palto.ui.attendanceList.AttendanceFragment"
+    android:id="@+id/menu_list"
+    android:name="com.example.palto.ui.menu.menuFragment"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:layout_marginLeft="16dp"
     android:layout_marginRight="16dp"
     app:layoutManager="LinearLayoutManager"
-    tools:context=".ui.attendanceList.AttendanceListFragment"
-    tools:listitem="@layout/fragment_attendance_item" />
+    tools:context=".ui.menu.MenuFragment"
+    tools:listitem="@layout/fragment_menu_item" />

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

@@ -5,14 +5,7 @@
     android:orientation="horizontal">
 
     <TextView
-        android:id="@+id/item_number"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_margin="@dimen/text_margin"
-        android:textAppearance="?attr/textAppearanceListItem" />
-
-    <TextView
-        android:id="@+id/content"
+        android:id="@+id/card_̤id"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_margin="@dimen/text_margin"

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

@@ -2,12 +2,12 @@
 <androidx.recyclerview.widget.RecyclerView 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:id="@+id/list"
-    android:name="com.example.palto.ui.session.SessionListFragment"
+    android:id="@+id/session_list"
+    android:name="com.example.palto.ui.session.sessionFragment"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:layout_marginLeft="16dp"
     android:layout_marginRight="16dp"
     app:layoutManager="LinearLayoutManager"
-    tools:context=".ui.sessionList.SessionListFragment"
+    tools:context=".ui.session.SessionFragment"
     tools:listitem="@layout/fragment_session_item" />

app/src/main/res/navigation/nav_graph.xml

@@ -3,20 +3,28 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/nav_graph"
-    app:startDestination="@id/attendanceListFragment">
+    app:startDestination="@id/menuFragment">
     <fragment
         android:id="@+id/loginFragment"
         android:name="com.example.palto.ui.login.LoginFragment"
         android:label="fragment._login"
         tools:layout="@layout/fragment_login" />
     <fragment
-        android:id="@+id/sessionListFragment"
-        android:name="com.example.palto.ui.sessionList.SessionListFragment"
+        android:id="@+id/sessionFragment"
+        android:name="com.example.palto.ui.session.SessionFragment"
         android:label="fragment_session_list"
         tools:layout="@layout/fragment_session_list" />
     <fragment
-        android:id="@+id/attendanceListFragment"
-        android:name="com.example.palto.ui.attendanceList.AttendanceListFragment"
-        android:label="fragment_attendance_list"
-        tools:layout="@layout/fragment_attendance_list" />
+        android:id="@+id/menuFragment"
+        android:name="com.example.palto.ui.menu.MenuFragment"
+        android:label="fragment_menu_list"
+        tools:layout="@layout/fragment_menu_list" >
+        <action
+            android:id="@+id/action_menuFragment_to_loginFragment"
+            app:destination="@id/loginFragment" />
+        <action
+            android:id="@+id/action_menuFragment_to_sessionFragment"
+            app:destination="@id/sessionFragment" />
+    </fragment>
+
 </navigation>