theme customizations support

app/src/main/java/sh/sar/basedbank/BasedBankApp.kt

@@ -115,7 +115,11 @@ class BasedBankApp : Application() {
 
     override fun onCreate() {
         super.onCreate()
-        DynamicColors.applyToActivitiesIfAvailable(this)
+        // Only apply wallpaper-based dynamic colors in system theme mode.
+        // Light/dark modes use content-based accent colors applied per-activity via ThemeHelper.
+        DynamicColors.applyToActivitiesIfAvailable(this) { _, _ ->
+            getSharedPreferences("prefs", MODE_PRIVATE).getString("theme", "system") == "system"
+        }
 
         val theme = getSharedPreferences("prefs", MODE_PRIVATE).getString("theme", "system")
         AppCompatDelegate.setDefaultNightMode(when (theme) {

app/src/main/java/sh/sar/basedbank/LockActivity.kt

@@ -21,6 +21,7 @@ import kotlinx.coroutines.withContext
 import sh.sar.basedbank.databinding.ActivityLockBinding
 import sh.sar.basedbank.ui.home.HomeActivity
 import sh.sar.basedbank.util.CredentialStore
+import sh.sar.basedbank.util.ThemeHelper
 import sh.sar.basedbank.BasedBankApp
 import javax.crypto.SecretKeyFactory
 import javax.crypto.spec.PBEKeySpec
@@ -46,6 +47,7 @@ class LockActivity : AppCompatActivity() {
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
+        ThemeHelper.applyAccent(this)
         super.onCreate(savedInstanceState)
         WindowCompat.setDecorFitsSystemWindows(window, false)
         binding = ActivityLockBinding.inflate(layoutInflater)
@@ -55,6 +57,9 @@ class LockActivity : AppCompatActivity() {
             isAppearanceLightStatusBars = isLight
             isAppearanceLightNavigationBars = isLight
         }
+        val ta = obtainStyledAttributes(intArrayOf(android.R.attr.colorBackground))
+        window.statusBarColor = ta.getColor(0, if (isLight) android.graphics.Color.WHITE else android.graphics.Color.BLACK)
+        ta.recycle()
         ViewCompat.setOnApplyWindowInsetsListener(binding.root) { view, insets ->
             val bars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
             view.setPadding(bars.left, bars.top, bars.right, bars.bottom)

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

@@ -68,6 +68,7 @@ import sh.sar.basedbank.util.CredentialStore
 import sh.sar.basedbank.util.CardsCache
 import sh.sar.basedbank.util.FinancingCache
 import sh.sar.basedbank.util.ForeignLimitsCache
+import sh.sar.basedbank.util.ThemeHelper
 
 class HomeActivity : AppCompatActivity() {
 
@@ -106,6 +107,7 @@ class HomeActivity : AppCompatActivity() {
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
+        ThemeHelper.applyAccent(this)
         super.onCreate(savedInstanceState)
         WindowCompat.setDecorFitsSystemWindows(window, false)
         binding = ActivityHomeBinding.inflate(layoutInflater)
@@ -118,6 +120,9 @@ class HomeActivity : AppCompatActivity() {
             isAppearanceLightStatusBars = isLight
             isAppearanceLightNavigationBars = isLight
         }
+        val ta = obtainStyledAttributes(intArrayOf(android.R.attr.colorBackground))
+        window.statusBarColor = ta.getColor(0, if (isLight) android.graphics.Color.WHITE else android.graphics.Color.BLACK)
+        ta.recycle()
         // Auth guard: HomeActivity must only be reachable after LockActivity or fresh login.
         // Using loadSecurityHash() (EncryptedSharedPreferences) instead of plain prefs so
         // a rooted device cannot bypass this by editing security_method in plain prefs.

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

@@ -2,7 +2,9 @@ package sh.sar.basedbank.ui.home
 
 import android.content.Context
 import android.content.SharedPreferences
+import android.graphics.Color
 import android.os.Bundle
+import android.text.InputType
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -10,6 +12,7 @@ import android.widget.ImageView
 import android.widget.LinearLayout
 import android.widget.ScrollView
 import android.widget.TextView
+import android.widget.Toast
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.appcompat.app.AppCompatDelegate.setApplicationLocales
 import androidx.core.os.LocaleListCompat
@@ -18,8 +21,11 @@ import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.google.android.material.textfield.TextInputEditText
+import com.google.android.material.textfield.TextInputLayout
 import sh.sar.basedbank.R
 import sh.sar.basedbank.databinding.FragmentSettingsAppearanceBinding
+import sh.sar.basedbank.util.ThemeHelper
 import java.util.Collections
 
 class SettingsAppearanceFragment : Fragment() {
@@ -103,8 +109,45 @@ class SettingsAppearanceFragment : Fragment() {
             }
             prefs.edit().putString("theme", key).apply()
             AppCompatDelegate.setDefaultNightMode(mode)
+            updateAccentState(key == "system")
+            updatePitchBlackState(key == "dark")
         }
 
+        // Pitch black
+        binding.switchPitchBlack.isChecked = prefs.getBoolean("pitch_black", false)
+        binding.switchPitchBlack.setOnCheckedChangeListener { _, checked ->
+            prefs.edit().putBoolean("pitch_black", checked).apply()
+            requireActivity().recreate()
+        }
+        val isDark = prefs.getString("theme", "system") == "dark"
+        updatePitchBlackState(isDark)
+
+        // Accent color
+        val savedPreset = prefs.getString("accent_preset", ThemeHelper.PRESET_BLUE)
+        binding.accentToggle.check(when (savedPreset) {
+            ThemeHelper.PRESET_RED -> R.id.btnAccentOrange
+            ThemeHelper.PRESET_GREEN  -> R.id.btnAccentGreen
+            ThemeHelper.PRESET_CUSTOM -> R.id.btnAccentCustom
+            else                      -> R.id.btnAccentBlue
+        })
+        binding.accentToggle.addOnButtonCheckedListener { _, checkedId, isChecked ->
+            if (!isChecked) return@addOnButtonCheckedListener
+            val preset = when (checkedId) {
+                R.id.btnAccentOrange -> ThemeHelper.PRESET_RED
+                R.id.btnAccentGreen  -> ThemeHelper.PRESET_GREEN
+                R.id.btnAccentCustom -> ThemeHelper.PRESET_CUSTOM
+                else                 -> ThemeHelper.PRESET_BLUE
+            }
+            if (preset == ThemeHelper.PRESET_CUSTOM) {
+                showCustomColorPicker()
+            } else {
+                prefs.edit().putString("accent_preset", preset).apply()
+                requireActivity().recreate()
+            }
+        }
+        val isSystem = prefs.getString("theme", "system") == "system"
+        updateAccentState(isSystem)
+
         // Language
         val currentLocales = AppCompatDelegate.getApplicationLocales()
         val currentLang = if (currentLocales.isEmpty) "en" else currentLocales[0]?.language ?: "en"
@@ -156,6 +199,68 @@ class SettingsAppearanceFragment : Fragment() {
         slotAdapter.notifyDataSetChanged()
     }
 
+    private fun updatePitchBlackState(isDark: Boolean) {
+        binding.rowPitchBlack.alpha = if (isDark) 1f else 0.38f
+        binding.switchPitchBlack.isEnabled = isDark
+    }
+
+    private fun updateAccentState(isSystem: Boolean) {
+        binding.sectionAccentColor.alpha = if (isSystem) 0.38f else 1f
+        for (i in 0 until binding.accentToggle.childCount) {
+            binding.accentToggle.getChildAt(i)?.isEnabled = !isSystem
+        }
+    }
+
+    private fun showCustomColorPicker() {
+        val ctx = requireContext()
+        val currentHex = prefs.getString("accent_custom_color", "") ?: ""
+        val inputLayout = TextInputLayout(ctx).apply {
+            hint = getString(R.string.accent_custom_hint)
+            val pad = (16 * resources.displayMetrics.density).toInt()
+            setPadding(pad, pad / 2, pad, 0)
+        }
+        val input = TextInputEditText(ctx).apply {
+            setText(currentHex)
+            inputType = InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS
+            setSingleLine(true)
+        }
+        inputLayout.addView(input)
+
+        val dialog = MaterialAlertDialogBuilder(ctx)
+            .setTitle(R.string.accent_custom_pick)
+            .setView(inputLayout)
+            .setPositiveButton(android.R.string.ok, null)
+            .setNegativeButton(R.string.cancel) { _, _ -> revertAccentToggle() }
+            .setOnCancelListener { revertAccentToggle() }
+            .show()
+
+        dialog.getButton(androidx.appcompat.app.AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+            val raw = input.text.toString().trim()
+            val hex = if (raw.startsWith("#")) raw else "#$raw"
+            try {
+                Color.parseColor(hex)
+                prefs.edit()
+                    .putString("accent_preset", ThemeHelper.PRESET_CUSTOM)
+                    .putString("accent_custom_color", hex)
+                    .apply()
+                dialog.dismiss()
+                requireActivity().recreate()
+            } catch (_: Exception) {
+                Toast.makeText(ctx, R.string.accent_invalid_color, Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
+
+    private fun revertAccentToggle() {
+        val saved = prefs.getString("accent_preset", ThemeHelper.PRESET_BLUE)
+        binding.accentToggle.check(when (saved) {
+            ThemeHelper.PRESET_RED -> R.id.btnAccentOrange
+            ThemeHelper.PRESET_GREEN  -> R.id.btnAccentGreen
+            ThemeHelper.PRESET_CUSTOM -> R.id.btnAccentCustom
+            else                      -> R.id.btnAccentBlue
+        })
+    }
+
     private fun showItemPicker(items: MutableList<Int>, slotIndex: Int, adapter: NavItemAdapter) {
         val isBottom = prefs.getBoolean("bottom_nav", false)
         if (items === slots && !isBottom) return

app/src/main/java/sh/sar/basedbank/ui/login/LoginActivity.kt

@@ -9,12 +9,14 @@ import sh.sar.basedbank.BasedBankApp
 import sh.sar.basedbank.LockActivity
 import sh.sar.basedbank.databinding.ActivityLoginBinding
 import sh.sar.basedbank.util.CredentialStore
+import sh.sar.basedbank.util.ThemeHelper
 
 class LoginActivity : AppCompatActivity() {
 
     private lateinit var binding: ActivityLoginBinding
 
     override fun onCreate(savedInstanceState: Bundle?) {
+        ThemeHelper.applyAccent(this)
         super.onCreate(savedInstanceState)
 
         // If security is configured and the user hasn't unlocked this session,
@@ -34,5 +36,8 @@ class LoginActivity : AppCompatActivity() {
             isAppearanceLightStatusBars = isLight
             isAppearanceLightNavigationBars = isLight
         }
+        val ta = obtainStyledAttributes(intArrayOf(android.R.attr.colorBackground))
+        window.statusBarColor = ta.getColor(0, if (isLight) android.graphics.Color.WHITE else android.graphics.Color.BLACK)
+        ta.recycle()
     }
 }

app/src/main/java/sh/sar/basedbank/ui/onboarding/OnboardingActivity.kt

@@ -19,6 +19,7 @@ import sh.sar.basedbank.R
 import sh.sar.basedbank.databinding.ActivityOnboardingBinding
 import sh.sar.basedbank.ui.login.LoginActivity
 import sh.sar.basedbank.util.CredentialStore
+import sh.sar.basedbank.util.ThemeHelper
 
 class OnboardingActivity : AppCompatActivity(), SecuritySetupFragment.Callback {
 
@@ -27,6 +28,7 @@ class OnboardingActivity : AppCompatActivity(), SecuritySetupFragment.Callback {
     private var countDownTimer: CountDownTimer? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
+        ThemeHelper.applyAccent(this)
         super.onCreate(savedInstanceState)
 
         // If security is already configured, onboarding is complete. Redirect to lock screen
@@ -45,6 +47,9 @@ class OnboardingActivity : AppCompatActivity(), SecuritySetupFragment.Callback {
             isAppearanceLightStatusBars = isLight
             isAppearanceLightNavigationBars = isLight
         }
+        val ta = obtainStyledAttributes(intArrayOf(android.R.attr.colorBackground))
+        window.statusBarColor = ta.getColor(0, if (isLight) android.graphics.Color.WHITE else android.graphics.Color.BLACK)
+        ta.recycle()
         prefs = getSharedPreferences("prefs", MODE_PRIVATE)
         val originalBottomPadding = binding.bottomBar.paddingBottom
         ViewCompat.setOnApplyWindowInsetsListener(binding.bottomBar) { view, insets ->

app/src/main/java/sh/sar/basedbank/util/ThemeHelper.kt

@@ -0,0 +1,78 @@
+package sh.sar.basedbank.util
+
+import android.content.Context
+import android.graphics.Bitmap
+import android.graphics.Color
+import android.os.Build
+import androidx.appcompat.app.AppCompatActivity
+import com.google.android.material.color.DynamicColors
+import com.google.android.material.color.DynamicColorsOptions
+import sh.sar.basedbank.R
+
+object ThemeHelper {
+
+    const val PRESET_BLUE   = "blue"
+    const val PRESET_RED    = "red"
+    const val PRESET_GREEN  = "green"
+    const val PRESET_CUSTOM = "custom"
+
+    fun isSystemTheme(context: Context): Boolean =
+        context.getSharedPreferences("prefs", Context.MODE_PRIVATE)
+            .getString("theme", "system") == "system"
+
+    fun getAccentPreset(context: Context): String =
+        context.getSharedPreferences("prefs", Context.MODE_PRIVATE)
+            .getString("accent_preset", PRESET_BLUE) ?: PRESET_BLUE
+
+    fun getCustomColor(context: Context): Int? {
+        val hex = context.getSharedPreferences("prefs", Context.MODE_PRIVATE)
+            .getString("accent_custom_color", null) ?: return null
+        return try { Color.parseColor(hex) } catch (_: Exception) { null }
+    }
+
+    fun presetSeedColor(context: Context, preset: String): Int = when (preset) {
+        PRESET_RED -> Color.parseColor("#D32F2F")
+        PRESET_GREEN  -> Color.parseColor("#4CAF50")
+        PRESET_CUSTOM -> getCustomColor(context) ?: Color.parseColor("#3F65AD")
+        else          -> Color.parseColor("#3F65AD")
+    }
+
+    fun isPitchBlackEnabled(context: Context): Boolean =
+        context.getSharedPreferences("prefs", Context.MODE_PRIVATE)
+            .getBoolean("pitch_black", false)
+
+    /**
+     * Apply the user-chosen accent theme to the given activity.
+     * Must be called BEFORE super.onCreate() so window-level attributes
+     * (status bar color, etc.) are resolved from the correct overlay.
+     * Has no effect when the theme is set to "system" (dynamic colors are
+     * handled by BasedBankApp via DynamicColors.applyToActivitiesIfAvailable).
+     */
+    fun applyAccent(activity: AppCompatActivity) {
+        if (isSystemTheme(activity)) return
+        val preset = getAccentPreset(activity)
+        val seed = presetSeedColor(activity, preset)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            val bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888)
+            bitmap.setPixel(0, 0, seed)
+            DynamicColors.applyToActivityIfAvailable(
+                activity,
+                DynamicColorsOptions.Builder().setContentBasedSource(bitmap).build()
+            )
+        } else {
+            // API < 31: apply a simple style overlay (partial palette, but functional)
+            val styleRes = when (preset) {
+                PRESET_RED -> R.style.ThemeOverlay_Accent_Orange
+                PRESET_GREEN  -> R.style.ThemeOverlay_Accent_Green
+                else          -> R.style.ThemeOverlay_Accent_Blue
+            }
+            activity.theme.applyStyle(styleRes, true)
+        }
+
+        val prefs = activity.getSharedPreferences("prefs", Context.MODE_PRIVATE)
+        val isDark = prefs.getString("theme", "system") == "dark"
+        if (isDark && prefs.getBoolean("pitch_black", false)) {
+            activity.theme.applyStyle(R.style.ThemeOverlay_PitchBlack, true)
+        }
+    }
+}

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

@@ -156,6 +156,87 @@
 
         </com.google.android.material.button.MaterialButtonToggleGroup>
 
+        <!-- Pitch black — enabled only in explicit dark mode -->
+        <LinearLayout
+            android:id="@+id/rowPitchBlack"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:gravity="center_vertical"
+            android:orientation="horizontal">
+
+            <TextView
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="@string/settings_pitch_black"
+                android:textAppearance="?attr/textAppearanceBodyLarge" />
+
+            <com.google.android.material.materialswitch.MaterialSwitch
+                android:id="@+id/switchPitchBlack"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content" />
+
+        </LinearLayout>
+
+        <!-- Accent color — always shown, disabled/grayed in system theme mode -->
+        <LinearLayout
+            android:id="@+id/sectionAccentColor"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:layout_marginTop="24dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/settings_accent_color"
+                android:textAppearance="?attr/textAppearanceTitleMedium"
+                android:layout_marginBottom="12dp" />
+
+            <com.google.android.material.button.MaterialButtonToggleGroup
+                android:id="@+id/accentToggle"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                app:singleSelection="true"
+                app:selectionRequired="true">
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/btnAccentBlue"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/accent_blue" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/btnAccentOrange"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/accent_orange" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/btnAccentGreen"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/accent_green" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/btnAccentCustom"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/accent_custom" />
+
+            </com.google.android.material.button.MaterialButtonToggleGroup>
+
+        </LinearLayout>
+
         <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"

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

@@ -148,6 +148,15 @@
     <string name="theme_system">System</string>
     <string name="theme_light">Light</string>
     <string name="theme_dark">Dark</string>
+    <string name="settings_pitch_black">Pitch Black</string>
+    <string name="settings_accent_color">Accent Color</string>
+    <string name="accent_blue">Blue</string>
+    <string name="accent_orange">Red</string>
+    <string name="accent_green">Green</string>
+    <string name="accent_custom">Custom</string>
+    <string name="accent_custom_pick">Custom Accent Color</string>
+    <string name="accent_custom_hint">#RRGGBB hex color</string>
+    <string name="accent_invalid_color">Invalid color — enter a valid hex code</string>
     <string name="language">Language</string>
     <string name="lang_english">English</string>
     <string name="lang_dhivehi">ދިވެހި</string>

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

@@ -6,4 +6,32 @@
         <item name="colorSecondary">@color/seed_secondary</item>
         <item name="android:windowSoftInputMode">adjustResize</item>
     </style>
+
+    <!-- Accent overlays — applied on API < 31 as fallback when content-based dynamic colors unavailable -->
+    <style name="ThemeOverlay_Accent_Blue" parent="">
+        <item name="colorPrimary">#3F65AD</item>
+        <item name="colorSecondary">#9AD141</item>
+    </style>
+
+    <style name="ThemeOverlay_Accent_Orange" parent="">
+        <item name="colorPrimary">#D32F2F</item>
+        <item name="colorSecondary">#EF9A9A</item>
+    </style>
+
+    <style name="ThemeOverlay_Accent_Green" parent="">
+        <item name="colorPrimary">#4CAF50</item>
+        <item name="colorSecondary">#80CBC4</item>
+    </style>
+
+    <!-- Pitch black overlay — forces pure black surfaces for OLED displays -->
+    <style name="ThemeOverlay_PitchBlack" parent="">
+        <item name="android:colorBackground">#000000</item>
+        <item name="colorSurface">#000000</item>
+        <item name="colorSurfaceVariant">#0d0d0d</item>
+        <item name="colorSurfaceContainer">#0d0d0d</item>
+        <item name="colorSurfaceContainerLow">#000000</item>
+        <item name="colorSurfaceContainerLowest">#000000</item>
+        <item name="colorSurfaceContainerHigh">#1a1a1a</item>
+        <item name="colorSurfaceContainerHighest">#1a1a1a</item>
+    </style>
 </resources>