add support for bottom nav bar

app/src/main/java/sh/sar/basedbank/ui/home/HomeActivity.kt

@@ -54,6 +54,7 @@ class HomeActivity : AppCompatActivity() {
 
     private lateinit var binding: ActivityHomeBinding
     private val viewModel: HomeViewModel by viewModels()
+    private lateinit var toggle: ActionBarDrawerToggle
 
     private val autolockHandler = Handler(Looper.getMainLooper())
     private var warningDialog: AlertDialog? = null
@@ -82,13 +83,25 @@ class HomeActivity : AppCompatActivity() {
         setContentView(binding.root)
         setSupportActionBar(binding.toolbar)
 
-        val toggle = ActionBarDrawerToggle(
+        toggle = ActionBarDrawerToggle(
             this, binding.drawerLayout, binding.toolbar,
             R.string.nav_open_drawer, R.string.nav_close_drawer
         )
         binding.drawerLayout.addDrawerListener(toggle)
         toggle.syncState()
 
+        binding.bottomNavigation.setOnItemSelectedListener { item ->
+            when (item.itemId) {
+                R.id.nav_dashboard -> { show(DashboardFragment()); true }
+                R.id.nav_accounts -> { show(AccountsFragment()); true }
+                R.id.nav_transfer -> { show(TransferFragment()); true }
+                R.id.nav_more -> { showMoreSheet(); false }
+                else -> false
+            }
+        }
+
+        applyNavMode()
+
         binding.navigationView.setNavigationItemSelectedListener { item ->
             binding.drawerLayout.closeDrawers()
             when (item.itemId) {
@@ -177,6 +190,36 @@ class HomeActivity : AppCompatActivity() {
             .commit()
     }
 
+    fun applyNavMode() {
+        val isBottom = getSharedPreferences("prefs", MODE_PRIVATE).getBoolean("bottom_nav", false)
+        if (isBottom) {
+            binding.drawerLayout.setDrawerLockMode(androidx.drawerlayout.widget.DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
+            toggle.isDrawerIndicatorEnabled = false
+            supportActionBar?.setDisplayHomeAsUpEnabled(false)
+            binding.bottomNavigation.visibility = View.VISIBLE
+        } else {
+            binding.drawerLayout.setDrawerLockMode(androidx.drawerlayout.widget.DrawerLayout.LOCK_MODE_UNLOCKED)
+            toggle.isDrawerIndicatorEnabled = true
+            toggle.syncState()
+            binding.bottomNavigation.visibility = View.GONE
+        }
+    }
+
+    private fun showMoreSheet() {
+        val sheet = NavMoreSheetFragment()
+        sheet.onNavigate = { itemId ->
+            when (itemId) {
+                R.id.nav_contacts -> show(ContactsFragment())
+                R.id.nav_transfer_history -> show(TransferHistoryFragment())
+                R.id.nav_finances -> show(FinancingFragment())
+                R.id.nav_otp -> show(OtpFragment())
+                R.id.nav_settings -> show(SettingsFragment())
+                else -> Toast.makeText(this, R.string.work_in_progress, Toast.LENGTH_SHORT).show()
+            }
+        }
+        sheet.show(supportFragmentManager, "nav_more")
+    }
+
     fun setRefreshing(visible: Boolean) {
         binding.refreshIndicator.visibility = if (visible) View.VISIBLE else View.GONE
     }

app/src/main/java/sh/sar/basedbank/ui/home/NavMoreSheetFragment.kt

@@ -0,0 +1,25 @@
+package sh.sar.basedbank.ui.home
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment
+import com.google.android.material.navigation.NavigationView
+import sh.sar.basedbank.R
+
+class NavMoreSheetFragment : BottomSheetDialogFragment() {
+
+    var onNavigate: ((Int) -> Unit)? = null
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View =
+        inflater.inflate(R.layout.sheet_nav_more, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        view.findViewById<NavigationView>(R.id.navMoreView).setNavigationItemSelectedListener { item ->
+            dismiss()
+            onNavigate?.invoke(item.itemId)
+            true
+        }
+    }
+}

app/src/main/java/sh/sar/basedbank/ui/home/SettingsFragment.kt

@@ -44,6 +44,15 @@ class SettingsFragment : Fragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         val prefs = requireContext().getSharedPreferences("prefs", Context.MODE_PRIVATE)
 
+        // Navigation mode
+        val isBottom = prefs.getBoolean("bottom_nav", false)
+        binding.navModeToggle.check(if (isBottom) R.id.btnNavBottom else R.id.btnNavDrawer)
+        binding.navModeToggle.addOnButtonCheckedListener { _, checkedId, isChecked ->
+            if (!isChecked) return@addOnButtonCheckedListener
+            prefs.edit().putBoolean("bottom_nav", checkedId == R.id.btnNavBottom).apply()
+            (activity as? HomeActivity)?.applyNavMode()
+        }
+
         // Theme
         val saved = prefs.getString("theme", "system")
         val initialId = when (saved) {

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

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurfaceVariant"
+        android:pathData="M6,10c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2zM18,10c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2zM12,10c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2z" />
+</vector>

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

@@ -32,11 +32,26 @@
 
         </com.google.android.material.appbar.AppBarLayout>
 
-        <FrameLayout
-            android:id="@+id/contentFrame"
+        <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            app:layout_behavior="@string/appbar_scrolling_view_behavior" />
+            android:orientation="vertical"
+            app:layout_behavior="@string/appbar_scrolling_view_behavior">
+
+            <FrameLayout
+                android:id="@+id/contentFrame"
+                android:layout_width="match_parent"
+                android:layout_height="0dp"
+                android:layout_weight="1" />
+
+            <com.google.android.material.bottomnavigation.BottomNavigationView
+                android:id="@+id/bottomNavigation"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:visibility="gone"
+                app:menu="@menu/bottom_nav_menu" />
+
+        </LinearLayout>
 
     </androidx.coordinatorlayout.widget.CoordinatorLayout>
 

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

@@ -36,6 +36,41 @@
             android:layout_marginBottom="24dp"
             android:text="@string/nav_add_account" />
 
+        <!-- Navigation -->
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/settings_navigation"
+            android:textAppearance="?attr/textAppearanceTitleMedium"
+            android:layout_marginBottom="12dp" />
+
+        <com.google.android.material.button.MaterialButtonToggleGroup
+            android:id="@+id/navModeToggle"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="24dp"
+            app:singleSelection="true"
+            app:selectionRequired="true">
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btnNavDrawer"
+                style="@style/Widget.Material3.Button.OutlinedButton"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="@string/settings_nav_drawer" />
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btnNavBottom"
+                style="@style/Widget.Material3.Button.OutlinedButton"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="@string/settings_nav_bottom" />
+
+        </com.google.android.material.button.MaterialButtonToggleGroup>
+
         <!-- Theme -->
 
         <TextView

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

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.google.android.material.navigation.NavigationView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/navMoreView"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    app:menu="@menu/more_nav_menu" />

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

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/nav_dashboard"
+        android:icon="@drawable/ic_nav_dashboard"
+        android:title="@string/nav_dashboard" />
+    <item android:id="@+id/nav_accounts"
+        android:icon="@drawable/ic_nav_accounts"
+        android:title="@string/nav_accounts" />
+    <item android:id="@+id/nav_transfer"
+        android:icon="@drawable/ic_send"
+        android:title="@string/transfer" />
+    <item android:id="@+id/nav_more"
+        android:icon="@drawable/ic_nav_more"
+        android:title="@string/nav_more" />
+</menu>

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

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/nav_contacts"
+        android:icon="@drawable/ic_contacts"
+        android:title="@string/nav_contacts" />
+    <item android:id="@+id/nav_activities"
+        android:icon="@drawable/ic_nav_activities"
+        android:title="@string/nav_activities" />
+    <item android:id="@+id/nav_transfer_history"
+        android:icon="@drawable/ic_nav_transfer_history"
+        android:title="@string/nav_transfer_history" />
+    <item android:id="@+id/nav_finances"
+        android:icon="@drawable/ic_nav_finances"
+        android:title="@string/nav_finances" />
+    <item android:id="@+id/nav_card_settings"
+        android:icon="@drawable/ic_nav_card"
+        android:title="@string/nav_card_settings" />
+    <item android:id="@+id/nav_otp"
+        android:icon="@drawable/ic_nav_otp"
+        android:title="@string/nav_otp" />
+    <item android:id="@+id/nav_settings"
+        android:icon="@drawable/ic_nav_settings"
+        android:title="@string/nav_settings" />
+</menu>

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

@@ -80,6 +80,7 @@
     <string name="nav_card_settings">Card Settings</string>
     <string name="nav_otp">OTP Codes</string>
     <string name="nav_settings">Settings</string>
+    <string name="nav_more">More</string>
     <string name="nav_open_drawer">Open navigation</string>
     <string name="nav_close_drawer">Close navigation</string>
     <string name="work_in_progress">Work in progress</string>
@@ -122,6 +123,9 @@
     <string name="settings_cache">Cache</string>
     <string name="settings_clear_cache">Clear Cache</string>
     <string name="settings_cache_cleared">Cache cleared</string>
+    <string name="settings_navigation">Navigation</string>
+    <string name="settings_nav_drawer">Drawer</string>
+    <string name="settings_nav_bottom">Bottom Bar</string>
     <string name="settings_logins">Logins</string>
     <string name="settings_logout">Log out</string>
     <string name="settings_logout_confirm_title">Log out of %s?</string>