Changing fragments via bottom navigation view works well now! Also started work on SettingsFragment.kt

app/src/main/java/com/denizk0461/studip/activity/MainActivity.kt

@@ -1,6 +1,7 @@
 package com.denizk0461.studip.activity
 
 import android.os.Bundle
+import android.util.Log
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.WindowCompat
 import androidx.navigation.findNavController
@@ -8,15 +9,23 @@ import androidx.navigation.ui.AppBarConfiguration
 import androidx.navigation.ui.navigateUp
 import android.view.Menu
 import android.view.MenuItem
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentTransaction
+import androidx.lifecycle.Lifecycle
 import com.denizk0461.studip.R
 import com.denizk0461.studip.data.Dependencies
 import com.denizk0461.studip.databinding.ActivityMainBinding
 import com.denizk0461.studip.db.EventRepository
+import com.denizk0461.studip.fragment.EventFragment
+import com.denizk0461.studip.fragment.FoodFragment
+import com.denizk0461.studip.fragment.SettingsFragment
 
 class MainActivity : AppCompatActivity() {
 
     private lateinit var appBarConfiguration: AppBarConfiguration
     private lateinit var binding: ActivityMainBinding
+    private var currentFragment = FragmentType.SCHEDULE
+    private val fragments = listOf(EventFragment(), FoodFragment(), SettingsFragment())
 
     override fun onCreate(savedInstanceState: Bundle?) {
         WindowCompat.setDecorFitsSystemWindows(window, false)
@@ -27,6 +36,12 @@ class MainActivity : AppCompatActivity() {
         binding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
+        binding.contentMain.navView.setOnItemSelectedListener { item ->
+            loadFragment(bottomIdToType(item.itemId))
+        }
+
+        loadFragment(currentFragment)
+
 //        setSupportActionBar(binding.toolbar)
 
 //        val navController = findNavController(R.id.nav_host_fragment_content_main)
@@ -41,6 +56,36 @@ class MainActivity : AppCompatActivity() {
 //        }
     }
 
+    private fun loadFragment(type: FragmentType): Boolean {
+//        val fragment = supportFragmentManager.findFragmentByTag(type.type) ?: getFragmentByType(type)
+        val fragment = getFragment(type)
+
+        if (fragment.lifecycle.currentState != Lifecycle.State.INITIALIZED) {
+            return false
+        }
+
+//        if (supportFragmentManager.fragments.size > 1) {
+//
+//            val currentFragment = supportFragmentManager.findFragmentByTag(currentFragment.type)
+//            if (currentFragment != null) {
+//                supportFragmentManager.beginTransaction().remove(currentFragment).commit()
+//                supportFragmentManager.popBackStack()
+//            }
+//        }
+
+//        supportFragmentManager.popBackStack()
+        supportFragmentManager.beginTransaction()
+            .replace(R.id.nav_host_fragment_content_main, fragment, type.type)
+            .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
+            .commit()
+
+        binding.contentMain.appTitleBar.text = getTitleString(type)
+
+        currentFragment = type
+
+        return true
+    }
+
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         // Inflate the menu; this adds items to the action bar if it is present.
         menuInflater.inflate(R.menu.menu_main, menu)
@@ -62,4 +107,37 @@ class MainActivity : AppCompatActivity() {
         return navController.navigateUp(appBarConfiguration)
                 || super.onSupportNavigateUp()
     }
+
+    private fun getFragmentByType(type: FragmentType): Fragment {
+//        Log.d("AAA!", "help")
+        return when (type) {
+            FragmentType.SCHEDULE -> EventFragment()
+            FragmentType.FOOD -> FoodFragment() // TODO once this fragment has been implemented
+            FragmentType.SETTINGS -> SettingsFragment()
+        }
+    }
+
+    private fun bottomIdToType(id: Int): FragmentType = when (id) {
+        R.id.food -> FragmentType.FOOD
+        R.id.settings -> FragmentType.SETTINGS
+        else -> FragmentType.SCHEDULE
+    }
+
+    private fun getFragment(type: FragmentType) = when (type) {
+        FragmentType.SCHEDULE -> fragments[0]
+        FragmentType.FOOD -> fragments[1]
+        FragmentType.SETTINGS -> fragments[2]
+    }
+
+    private fun getTitleString(type: FragmentType) = when (type) {
+        FragmentType.SCHEDULE -> getString(R.string.title_schedule)
+        FragmentType.FOOD -> getString(R.string.title_food)
+        FragmentType.SETTINGS -> getString(R.string.title_settings)
+    }
+
+    enum class FragmentType(val type: String) {
+        SCHEDULE("schedule"),
+        FOOD("food"),
+        SETTINGS("settings"),
+    }
 }

app/src/main/java/com/denizk0461/studip/fragment/EventFragment.kt

@@ -85,10 +85,10 @@ class EventFragment : Fragment() {
 //        }
     }
 
-//    override fun onResume() {
-//        super.onResume()
-//        switchToCurrentDayView()
-//    }
+    override fun onResume() {
+        super.onResume()
+        switchToCurrentDayView()
+    }
 
     override fun onDestroyView() {
         super.onDestroyView()
@@ -96,8 +96,8 @@ class EventFragment : Fragment() {
     }
 
     private fun switchToCurrentDayView() {
-//        binding.viewpager.currentItem = dayOfWeek
-        binding.dayTabLayout.getTabAt(dayOfWeek)?.select()
+        binding.viewPager.currentItem = dayOfWeek
+//        binding.dayTabLayout.getTabAt(dayOfWeek)?.select()
     }
 
     private fun launchWebview() {

app/src/main/java/com/denizk0461/studip/fragment/FoodFragment.kt

@@ -0,0 +1,32 @@
+package com.denizk0461.studip.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import com.denizk0461.studip.databinding.FragmentFoodBinding
+
+class FoodFragment : Fragment() {
+
+    private var _binding: FragmentFoodBinding? = 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 = FragmentFoodBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+}

app/src/main/java/com/denizk0461/studip/fragment/SettingsFragment.kt

@@ -0,0 +1,68 @@
+package com.denizk0461.studip.fragment
+
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Toast
+import androidx.fragment.app.Fragment
+import com.denizk0461.studip.BuildConfig
+import com.denizk0461.studip.data.Misc
+import com.denizk0461.studip.databinding.FragmentSettingsBinding
+
+class SettingsFragment : Fragment() {
+
+    private var _binding: FragmentSettingsBinding? = null
+    // This property is only valid between onCreateView and
+    // onDestroyView.
+    private val binding get() = _binding!!
+    private var appVersionClick = 0
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        _binding = FragmentSettingsBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        val toast2 = Toast.makeText(context, "2", Toast.LENGTH_SHORT)
+        val toast22 = Toast.makeText(context, "22", Toast.LENGTH_SHORT)
+        val toast222 = Toast.makeText(context, "222", Toast.LENGTH_SHORT)
+
+        binding.buttonAppVersion.setOnClickListener {
+            when (appVersionClick) {
+                19 -> {
+                    toast2.show()
+                    appVersionClick += 1
+                }
+                20 -> {
+                    toast2.cancel()
+                    toast22.show()
+                    appVersionClick += 1
+                }
+                21 -> {
+                    toast22.cancel()
+                    toast222.show()
+                    appVersionClick += 1
+                }
+                22 -> {
+                    toast222.cancel()
+                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(Misc.mysteryLink)))
+                    appVersionClick = 0
+                }
+                else -> appVersionClick += 1
+            }
+        }
+
+        binding.appVersionText.text = BuildConfig.VERSION_NAME
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+}

app/src/main/res/drawable/layout_ripple.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- An white rectangle ripple. -->
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="?attr/colorPrimary">
+    <item
+        android:id="@android:id/mask"
+        android:gravity="center">
+        <shape android:shape="rectangle">
+            <solid android:color="?attr/colorPrimary"/>
+        </shape>
+    </item>
+</ripple>

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

@@ -7,6 +7,7 @@
     android:fitsSystemWindows="true"
     tools:context=".activity.MainActivity">
 
-    <include layout="@layout/content_main"/>
+    <include layout="@layout/content_main"
+        android:id="@+id/content_main"/>
 
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -15,9 +15,10 @@
         app:layout_constraintEnd_toEndOf="parent">
 
         <TextView
+            android:id="@+id/app_title_bar"
             android:layout_width="match_parent"
             android:layout_height="48dp"
-            android:text="@string/your_schedule"
+            android:text="@string/title_schedule"
             android:textSize="32sp"
             android:fontFamily="@font/lato_bolditalic"
             android:layout_marginHorizontal="16dp"
@@ -25,7 +26,7 @@
 
     </com.google.android.material.appbar.AppBarLayout>
 
-    <fragment
+    <androidx.fragment.app.FragmentContainerView
         android:id="@+id/nav_host_fragment_content_main"
         android:name="androidx.navigation.fragment.NavHostFragment"
         android:layout_width="0dp"
@@ -42,6 +43,7 @@
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         app:menu="@menu/nav_view_items"
+        app:labelVisibilityMode="selected"
         app:itemActiveIndicatorStyle="@style/NavigationViewItemIndicator"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"

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

@@ -4,7 +4,8 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".fragment.EventFragment">
+    tools:context=".fragment.EventFragment"
+    android:background="?android:colorBackground">
 
     <com.google.android.material.tabs.TabLayout
         android:id="@+id/day_tab_layout"

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

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="?android:colorBackground">
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".fragment.SettingsFragment"
+    android:background="?android:colorBackground">
+
+    <androidx.appcompat.widget.LinearLayoutCompat
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginHorizontal="8dp"
+            android:layout_marginVertical="4dp"
+            style="@style/Widget.Material3.CardView.Outlined">
+
+            <androidx.appcompat.widget.LinearLayoutCompat
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:paddingBottom="8dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginBottom="8dp"
+                    android:textSize="22sp"
+                    android:fontFamily="@font/lato_bolditalic"
+                    android:text="@string/settings_misc"
+                    android:layout_marginTop="16dp"
+                    android:layout_marginHorizontal="16dp"/>
+
+                <com.google.android.material.divider.MaterialDivider
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginHorizontal="16dp"/>
+
+                <!-- Academic quarter -->
+                <androidx.appcompat.widget.LinearLayoutCompat
+                    android:background="@drawable/layout_ripple"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:orientation="vertical"
+                    android:clickable="true"
+                    android:focusable="true"
+                    android:paddingHorizontal="16dp"
+                    android:paddingVertical="8dp">
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:textSize="16sp"
+                        android:fontFamily="@font/lato_bolditalic"
+                        android:text="@string/settings_quarter_title"/>
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:textSize="16sp"
+                        android:text="@string/settings_quarter_subtitle"/>
+
+                </androidx.appcompat.widget.LinearLayoutCompat>
+
+                <!-- App version -->
+                <androidx.appcompat.widget.LinearLayoutCompat
+                    android:id="@+id/button_app_version"
+                    android:background="@drawable/layout_ripple"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:orientation="vertical"
+                    android:clickable="true"
+                    android:focusable="true"
+                    android:paddingHorizontal="16dp"
+                    android:paddingVertical="8dp">
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:textSize="16sp"
+                        android:fontFamily="@font/lato_bolditalic"
+                        android:text="@string/settings_app_version"/>
+
+                    <TextView
+                        android:id="@+id/app_version_text"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:textSize="16sp"/>
+
+                </androidx.appcompat.widget.LinearLayoutCompat>
+
+            </androidx.appcompat.widget.LinearLayoutCompat>
+
+        </com.google.android.material.card.MaterialCardView>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_horizontal"
+            android:text="@string/with_love"
+            android:textSize="10sp"
+            android:layout_marginTop="4dp"
+            android:textAlignment="center"/>
+
+    </androidx.appcompat.widget.LinearLayoutCompat>
+
+</androidx.core.widget.NestedScrollView>

app/src/main/res/values/strings.xml

@@ -13,7 +13,9 @@
     <string name="thursday">THURSDAY</string>
     <string name="friday">FRIDAY</string>
 
-    <string name="your_schedule">Your Schedule</string>
+    <string name="title_schedule">Your Schedule</string>
+    <string name="title_food">Canteen Plans</string>
+    <string name="title_settings">App Settings</string>
 
     <string name="nav_schedule">Schedule</string>
     <string name="nav_food">Food</string>
@@ -21,6 +23,15 @@
 
     <string name="toast_fetch_finished">Your schedule has been refreshed!</string>
 
+    <string name="settings_general">General</string>
+    <string name="settings_misc">Miscellaneous</string>
+
+    <string name="settings_quarter_title">Show academic quarter</string>
+    <string name="settings_quarter_subtitle">Where applicable</string>
+    <string name="settings_app_version">App Version</string>
+
+    <string name="with_love">with ♡️ from Osterholz\nMade by Deniz \\__*</string>
+
     <string name="lorem_ipsum">
         Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam in scelerisque sem. Mauris
         volutpat, dolor id interdum ullamcorper, risus dolor egestas lectus, sit amet mattis purus

app/src/main/res/values/themes.xml

@@ -18,4 +18,9 @@
     <style name="NavigationViewItemIndicator" parent="Widget.Material3.BottomNavigationView.ActiveIndicator">
         <item name="android:color">@color/primaryDark</item>
     </style>
+
+    <style name="SelectableItemTheme">
+<!--        <item name="colorControlHighlight">?attr/colorPrimary</item>-->
+        <item name="colorControlHighlight">@color/primaryLight</item>
+    </style>
 </resources>