fix(ui): stabilize theme and navigation behavior

android/app/src/androidTest/kotlin/com/flagship/abox/manager/ui/preferences/SettingsScreenTest.kt

@@ -57,7 +57,6 @@ class SettingsScreenTest {
             "settings-theme-mode",
             "settings-color-style",
             "settings-color-standard",
-            "settings-predictive-back",
             "settings-interface-scale",
         )
         composeRule.onAllNodesWithTag("settings-renderer-selector").assertCountEquals(0)
@@ -74,7 +73,6 @@ class SettingsScreenTest {
             "settings-blur",
             "settings-floating-navigation",
             "settings-liquid-glass",
-            "settings-predictive-back",
             "settings-interface-scale",
         )
         composeRule.onAllNodesWithTag("settings-renderer-selector").assertCountEquals(0)

android/app/src/main/AndroidManifest.xml

@@ -3,7 +3,7 @@
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
     <application
         android:name=".ABoxManagerApplication"
-        android:enableOnBackInvokedCallback="true"
+        android:enableOnBackInvokedCallback="false"
         android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:roundIcon="@mipmap/ic_launcher_round"

android/app/src/main/kotlin/com/flagship/abox/manager/ui/ABoxManagerApp.kt

@@ -5,7 +5,6 @@ import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.safeDrawing
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.activity.compose.BackHandler
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
@@ -20,6 +19,7 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.flagship.abox.manager.designsystem.ABoxLoadingIndicator
 import com.flagship.abox.manager.designsystem.ABoxSurface
 import com.flagship.abox.manager.designsystem.ABoxTheme
+import com.flagship.abox.manager.designsystem.ABoxBackLayer
 import com.flagship.abox.manager.domain.ProviderProfile
 import com.flagship.abox.manager.domain.Username
 import com.flagship.abox.manager.ui.login.LoginRoute
@@ -108,13 +108,7 @@ private fun AuthenticatedNavHost(
     onShowAccountDialogChange: (Boolean) -> Unit,
     onShowSettingsChange: (Boolean) -> Unit,
 ) {
-    if (showSettings) {
+    Box(Modifier.fillMaxSize()) {
-        BackHandler { onShowSettingsChange(false) }
-        SettingsRoute(
-            experienceState = settingsExperienceState,
-            onExit = { onShowSettingsChange(false) },
-        )
-    } else {
         AuthenticatedNavigation(
             username = username,
             profile = profile,
@@ -122,6 +116,17 @@ private fun AuthenticatedNavHost(
             onProviderClick = { onShowAccountDialogChange(true) },
             onAvatarClick = { onShowAccountDialogChange(true) },
         )
+        if (showSettings) {
+            ABoxBackLayer(
+                onBack = { onShowSettingsChange(false) },
+                enabled = settingsExperienceState.isHome,
+            ) {
+                SettingsRoute(
+                    experienceState = settingsExperienceState,
+                    onExit = { onShowSettingsChange(false) },
+                )
+            }
+        }
     }
 
     if (showAccountDialog) {
@@ -131,6 +136,7 @@ private fun AuthenticatedNavHost(
             onDismissRequest = { onShowAccountDialogChange(false) },
             onOpenSettings = {
                 onShowAccountDialogChange(false)
+                settingsExperienceState.showTheme(returnToHome = false)
                 onShowSettingsChange(true)
             },
             onSwitchProvider = {

android/app/src/main/kotlin/com/flagship/abox/manager/ui/navigation/AuthenticatedNavigation.kt

@@ -1,15 +1,11 @@
 package com.flagship.abox.manager.ui.navigation
 
 import android.net.Uri
-import androidx.activity.compose.BackHandler
-import androidx.activity.compose.PredictiveBackHandler
-import android.os.Build
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
@@ -17,14 +13,11 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.key
 import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.mutableFloatStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.saveable.Saver
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.clip
-import androidx.compose.ui.graphics.graphicsLayer
 import androidx.compose.ui.platform.LocalConfiguration
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
@@ -60,9 +53,6 @@ import com.flagship.abox.manager.ui.shell.MainAppShell
 import com.flagship.abox.manager.ui.shell.MainTab
 import com.flagship.abox.manager.ui.shell.detailPresentation
 import com.flagship.abox.manager.ui.shell.widthClass
-import com.flagship.abox.manager.designsystem.LocalABoxPredictiveBackEnabled
-import kotlinx.coroutines.CancellationException
-import kotlinx.coroutines.flow.collect
 import com.flagship.abox.manager.ui.socket.SocketScreen
 import com.flagship.abox.manager.ui.socket.SocketUiEvent
 import com.flagship.abox.manager.ui.socket.SocketViewModel
@@ -169,12 +159,11 @@ fun AuthenticatedNavigationStateHost(
         }
 
         val selection = selectedDevice ?: return@LaunchedEffect
+        when (detailPresentation(windowSizeClass, selection)) {
+            DetailPresentation.PANE -> {
                 if (savedSelection != selection) {
                     savedSelection = selection
                 }
-
-        when (detailPresentation(windowSizeClass, selection)) {
-            DetailPresentation.PANE -> {
                 if (currentRoute != MainTab.DEVICES.route) {
                     navController.popBackStack(MainTab.DEVICES.route, inclusive = false)
                 }
@@ -184,6 +173,9 @@ fun AuthenticatedNavigationStateHost(
                     navController.navigate(deviceRoute(selection)) {
                         launchSingleTop = true
                     }
+                    savedSelection = null
+                } else if (savedSelection != null) {
+                    savedSelection = null
                 }
             }
         }
@@ -194,21 +186,6 @@ fun AuthenticatedNavigationStateHost(
         selectedDevice = selectedDevice,
         detailPresentation = selectedPresentation,
     )
-    val canNavigateBack = selectedDevice != null || currentRoute != MainTab.DEVICES.route
-    val predictiveBackEnabled = LocalABoxPredictiveBackEnabled.current &&
-        Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
-    var backProgress by remember { mutableFloatStateOf(0f) }
-
-    Box(
-        modifier = Modifier.fillMaxSize()
-            .clip(RoundedCornerShape((28f * backProgress).dp))
-            .graphicsLayer {
-                val scale = 1f - 0.04f * backProgress
-                scaleX = scale
-                scaleY = scale
-                translationX = 28.dp.toPx() * backProgress
-            },
-    ) {
     content(
         snapshot,
         { tab ->
@@ -225,29 +202,9 @@ fun AuthenticatedNavigationStateHost(
                 }
             }
         },
-            { deviceName, type ->
+        { deviceName, type -> savedSelection = DeviceSelection(profileId, deviceName, type) },
-                savedSelection = DeviceSelection(profileId, deviceName, type)
-            },
         { savedSelection = null },
     )
-    }
-
-    PredictiveBackHandler(enabled = canNavigateBack && predictiveBackEnabled) { events ->
-        try {
-            events.collect { event -> backProgress = event.progress }
-            savedSelection = null
-            navController.popCurrentDestinationUnlessRoot()
-        } catch (cancelled: CancellationException) {
-            throw cancelled
-        } finally {
-            backProgress = 0f
-        }
-    }
-
-    BackHandler(enabled = canNavigateBack && !predictiveBackEnabled) {
-        savedSelection = null
-        navController.popCurrentDestinationUnlessRoot()
-    }
 }
 
 @Composable
@@ -355,6 +312,23 @@ private fun AuthenticatedNavHost(
     onLogout: () -> Unit,
     onOpenSettings: () -> Unit,
 ) {
+    val activeBackStackEntry by navController.currentBackStackEntryAsState()
+    val activeRoute = activeBackStackEntry?.actualRoute()
+    var backNavigationInFlight by remember { mutableStateOf(false) }
+    LaunchedEffect(activeRoute) {
+        backNavigationInFlight = false
+    }
+    val navigateBackFromDetail: () -> Unit = {
+        val liveRoute = navController.currentBackStackEntry?.actualRoute()
+        val isMainDestination = MainTab.entries.any { it.route == liveRoute }
+        if (!backNavigationInFlight && !isMainDestination) {
+            backNavigationInFlight = true
+            if (!navController.popBackStack()) {
+                backNavigationInFlight = false
+            }
+        }
+    }
+
     NavHost(
         navController = navController,
         startDestination = MainTab.DEVICES.route,
@@ -427,14 +401,14 @@ private fun AuthenticatedNavHost(
         deviceDetailGraph(
             onBackClick = {
                 onClearDeviceSelection()
-                navController.popBackStack()
+                navigateBackFromDetail()
             },
         )
         sceneEditorDestination(
-            onBack = navController::popBackStack,
+            onBack = navigateBackFromDetail,
             onSaved = { navController.popBackStack(MainTab.SCENES.route, inclusive = false) },
         )
-        sceneExecutionDestination(onBack = navController::popBackStack)
+        sceneExecutionDestination(onBack = navigateBackFromDetail)
         composable(
             route = Routes.INFRARED_HUB,
             arguments = listOf(
@@ -445,7 +419,7 @@ private fun AuthenticatedNavHost(
             InfraredHubRoute(
                 onBack = {
                     onClearDeviceSelection()
-                    navController.popBackStack()
+                    navigateBackFromDetail()
                 },
                 onOpenRemote = { remoteId ->
                     navController.navigate(
@@ -467,7 +441,7 @@ private fun AuthenticatedNavHost(
             ),
         ) {
             RemotePanelRoute(
-                onBack = navController::popBackStack,
+                onBack = navigateBackFromDetail,
                 onSessionInvalid = onLogout,
             )
         }
@@ -479,7 +453,7 @@ private fun AuthenticatedNavHost(
             ),
         ) {
             InfraredControlRoute(
-                onBack = navController::popBackStack,
+                onBack = navigateBackFromDetail,
                 onSessionInvalid = onLogout,
             )
         }
@@ -561,9 +535,3 @@ private fun NavBackStackEntry.actualRoute(): String? {
     }
     return route
 }
-
-private fun NavHostController.popCurrentDestinationUnlessRoot() {
-    if (currentBackStackEntry?.actualRoute() != MainTab.DEVICES.route) {
-        popBackStack()
-    }
-}

android/app/src/main/kotlin/com/flagship/abox/manager/ui/preferences/SettingsScreen.kt

@@ -1,6 +1,5 @@
 package com.flagship.abox.manager.ui.preferences
 
-import androidx.activity.compose.BackHandler
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
@@ -58,6 +57,9 @@ import com.flagship.abox.manager.designsystem.LocalABoxShapes
 import com.flagship.abox.manager.designsystem.icon.ABoxIcon
 import com.flagship.abox.manager.designsystem.icon.ABoxIconKey
 import com.flagship.abox.manager.preferences.AccentPreference
+import com.flagship.abox.manager.designsystem.tokens.ABoxAccentPalette
+import com.flagship.abox.manager.designsystem.ABoxBackLayer
+import com.flagship.abox.manager.designsystem.ABoxSurface
 import com.flagship.abox.manager.preferences.AppThemeMode
 import com.flagship.abox.manager.preferences.DesignRenderer
 import com.flagship.abox.manager.preferences.InterfaceScale
@@ -70,11 +72,27 @@ private enum class SettingsDestination { HOME, THEME }
 @Stable
 class SettingsExperienceState(initialDestination: String = SettingsDestination.HOME.name) {
     var destination: String by mutableStateOf(initialDestination)
+    var themeBackReturnsHome: Boolean by mutableStateOf(true)
+    val isHome: Boolean get() = destination == SettingsDestination.HOME.name
+
+    fun showHome() {
+        destination = SettingsDestination.HOME.name
+    }
+
+    fun showTheme(returnToHome: Boolean = true) {
+        themeBackReturnsHome = returnToHome
+        destination = SettingsDestination.THEME.name
+    }
 
     companion object {
         val Saver: Saver<SettingsExperienceState, String> = Saver(
-            save = { it.destination },
+            save = { "${it.destination}|${it.themeBackReturnsHome}" },
-            restore = { SettingsExperienceState(it) },
+            restore = { saved ->
+                val parts = saved.split('|', limit = 2)
+                SettingsExperienceState(parts.first()).apply {
+                    themeBackReturnsHome = parts.getOrNull(1)?.toBooleanStrictOrNull() ?: true
+                }
+            },
         )
     }
 }
@@ -98,23 +116,30 @@ fun SettingsExperience(
 ) {
     val destination = runCatching { SettingsDestination.valueOf(experienceState.destination) }
         .getOrDefault(SettingsDestination.HOME)
-    BackHandler {
+    Box(Modifier.fillMaxSize()) {
-        if (destination == SettingsDestination.THEME) experienceState.destination = SettingsDestination.HOME.name
+        ABoxSurface(modifier = Modifier.fillMaxSize()) {
-        else onExit()
+            SettingsHomeScreen(
-    }
-    when (destination) {
-        SettingsDestination.HOME -> SettingsHomeScreen(
                 state = state,
-            onOpenTheme = { experienceState.destination = SettingsDestination.THEME.name },
+                onOpenTheme = { experienceState.showTheme(returnToHome = true) },
                 onBack = onExit,
                 onAction = onAction,
             )
-        SettingsDestination.THEME -> ThemeSettingsScreen(
+        }
+        if (destination == SettingsDestination.THEME) {
+            val leaveTheme = {
+                if (experienceState.themeBackReturnsHome) experienceState.showHome() else onExit()
+            }
+            ABoxBackLayer(onBack = leaveTheme) {
+                ABoxSurface(modifier = Modifier.fillMaxSize()) {
+                    ThemeSettingsScreen(
                         state = state,
-            onBack = { experienceState.destination = SettingsDestination.HOME.name },
+                        onBack = leaveTheme,
                         onAction = onAction,
                     )
                 }
+            }
+        }
+    }
 }
 
 @Composable
@@ -218,6 +243,7 @@ private fun ThemeSettingsScreen(
 
 @Composable
 private fun ColumnScope.MaterialThemeOptions(state: SettingsUiState, onAction: (SettingsUiAction) -> Unit) {
+    val manualColorsEnabled = !state.preferences.dynamicColorEnabled || Build.VERSION.SDK_INT < Build.VERSION_CODES.S
     SettingsGroup(modifier = Modifier.testTag("settings-material-colors")) {
         SettingsSwitchRow(
             icon = ABoxIconKey.THEME,
@@ -238,6 +264,7 @@ private fun ColumnScope.MaterialThemeOptions(state: SettingsUiState, onAction: (
         values = ColorStyle.entries,
         label = { colorStyleLabel(it) },
         onSelected = { onAction(SettingsUiAction.SetColorStyle(it)) },
+        enabled = manualColorsEnabled,
     )
     EnumSettingRow(
         modifier = Modifier.testTag("settings-color-standard"),
@@ -247,8 +274,8 @@ private fun ColumnScope.MaterialThemeOptions(state: SettingsUiState, onAction: (
         values = ColorStandard.entries,
         label = { colorStandardLabel(it) },
         onSelected = { onAction(SettingsUiAction.SetColorStandard(it)) },
+        enabled = manualColorsEnabled,
     )
-    PredictiveBackSetting(state, onAction)
     SettingsGroup(modifier = Modifier.testTag("settings-interface-scale")) { ScaleSelector(state, onAction) }
 }
 
@@ -303,26 +330,9 @@ private fun ColumnScope.MiuixThemeOptions(state: SettingsUiState, onAction: (Set
             },
         ) { onAction(SettingsUiAction.SetLiquidGlass(it)) }
     }
-    PredictiveBackSetting(state, onAction)
     SettingsGroup(modifier = Modifier.testTag("settings-interface-scale")) { ScaleSelector(state, onAction) }
 }
 
-@Composable
-private fun PredictiveBackSetting(state: SettingsUiState, onAction: (SettingsUiAction) -> Unit) {
-    val supported = Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
-    SettingsGroup(modifier = Modifier.testTag("settings-predictive-back")) {
-        SettingsSwitchRow(
-            icon = ABoxIconKey.BACK,
-            title = stringResource(R.string.settings_predictive_back),
-            description = stringResource(R.string.settings_predictive_back_description),
-            checked = state.preferences.predictiveBackEnabled,
-            tag = "settings-predictive-back-switch",
-            enabled = supported,
-            unavailableDescription = if (supported) null else stringResource(R.string.settings_requires_android_13),
-        ) { onAction(SettingsUiAction.SetPredictiveBack(it)) }
-    }
-}
-
 @Composable
 private fun SettingsPage(
     title: String,
@@ -448,15 +458,17 @@ private fun <T> EnumSettingRow(
     values: List<T>,
     label: @Composable (T) -> String,
     onSelected: (T) -> Unit,
+    enabled: Boolean = true,
 ) {
     var expanded by remember { mutableStateOf(false) }
     SettingsGroup(modifier = modifier) {
-        Box(Modifier.fillMaxWidth()) {
+        Box(Modifier.fillMaxWidth().alpha(if (enabled) 1f else 0.42f)) {
             SettingsLinkRow(
                 icon = icon,
                 title = title,
                 description = stringResource(R.string.settings_tap_to_choose),
                 value = value,
+                enabled = enabled,
                 onClick = { expanded = true },
             )
             DropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
@@ -478,18 +490,29 @@ private fun <T> EnumSettingRow(
 
 @Composable
 private fun AccentSelector(state: SettingsUiState, onAction: (SettingsUiAction) -> Unit) {
+    val dark = when (state.preferences.themeMode) {
+        AppThemeMode.DARK -> true
+        AppThemeMode.LIGHT -> false
+        AppThemeMode.SYSTEM -> androidx.compose.foundation.isSystemInDarkTheme()
+    }
+    val manualColorsEnabled = !state.preferences.dynamicColorEnabled || Build.VERSION.SDK_INT < Build.VERSION_CODES.S
     Column(Modifier.padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
         Text(stringResource(R.string.settings_accent_label), style = MaterialTheme.typography.titleMedium, fontWeight = FontWeight.SemiBold)
         Row(
-            modifier = Modifier.fillMaxWidth().alpha(if (state.preferences.dynamicColorEnabled) 0.42f else 1f),
+            modifier = Modifier.fillMaxWidth().alpha(if (manualColorsEnabled) 1f else 0.42f),
             horizontalArrangement = Arrangement.SpaceBetween,
         ) {
             AccentPreference.entries.forEach { accent ->
-                val color = accentColor(accent)
+                val color = ABoxAccentPalette.preview(
+                    accent = accent,
+                    style = state.preferences.colorStyle,
+                    standard = state.preferences.colorStandard,
+                    dark = dark,
+                )
                 Box(
                     modifier = Modifier.size(44.dp).background(color, CircleShape)
                         .then(if (state.preferences.accentPreference == accent) Modifier.border(3.dp, MaterialTheme.colorScheme.onSurface, CircleShape) else Modifier)
-                        .clickable(enabled = !state.preferences.dynamicColorEnabled) { onAction(SettingsUiAction.SetAccent(accent)) },
+                        .clickable(enabled = manualColorsEnabled) { onAction(SettingsUiAction.SetAccent(accent)) },
                     contentAlignment = Alignment.Center,
                 ) {
                     if (state.preferences.accentPreference == accent) Icon(Icons.Outlined.Check, null, tint = Color.White)
@@ -518,8 +541,8 @@ private fun ScaleSelector(state: SettingsUiState, onAction: (SettingsUiAction) -
 }
 
 @Composable
-private fun SettingsLinkRow(icon: ABoxIconKey, title: String, description: String, value: String?, modifier: Modifier = Modifier, onClick: () -> Unit) {
+private fun SettingsLinkRow(icon: ABoxIconKey, title: String, description: String, value: String?, modifier: Modifier = Modifier, enabled: Boolean = true, onClick: () -> Unit) {
-    Row(modifier.fillMaxWidth().clickable(onClick = onClick).padding(14.dp), verticalAlignment = Alignment.CenterVertically) {
+    Row(modifier.fillMaxWidth().clickable(enabled = enabled, onClick = onClick).padding(14.dp), verticalAlignment = Alignment.CenterVertically) {
         SettingsRowHeader(icon, title, description, Modifier.weight(1f))
         if (value != null) Text(value, color = MaterialTheme.colorScheme.onSurfaceVariant)
         Icon(Icons.Outlined.ChevronRight, null, tint = MaterialTheme.colorScheme.onSurfaceVariant)
@@ -570,4 +593,3 @@ private fun SettingsRowHeader(icon: ABoxIconKey, title: String, description: Str
 @Composable private fun themeLabel(mode: AppThemeMode) = stringResource(when (mode) { AppThemeMode.SYSTEM -> R.string.settings_theme_system; AppThemeMode.LIGHT -> R.string.settings_theme_light; AppThemeMode.DARK -> R.string.settings_theme_dark })
 @Composable private fun colorStyleLabel(value: ColorStyle) = stringResource(when (value) { ColorStyle.TONAL_SPOT -> R.string.settings_color_style_tonal; ColorStyle.EXPRESSIVE -> R.string.settings_color_style_expressive; ColorStyle.FIDELITY -> R.string.settings_color_style_fidelity })
 @Composable private fun colorStandardLabel(value: ColorStandard) = stringResource(when (value) { ColorStandard.SPEC_2021 -> R.string.settings_color_standard_2021; ColorStandard.SPEC_2025 -> R.string.settings_color_standard_2025 })
-private fun accentColor(accent: AccentPreference) = when (accent) { AccentPreference.BLUE -> Color(0xFF4F6FA9); AccentPreference.GREEN -> Color(0xFF2F7D57); AccentPreference.AMBER -> Color(0xFFA66700); AccentPreference.ROSE -> Color(0xFFA94C68); AccentPreference.VIOLET -> Color(0xFF7659A8) }

android/app/src/main/kotlin/com/flagship/abox/manager/ui/shell/AccountProviderDialog.kt

@@ -14,7 +14,7 @@ import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.outlined.Logout
 import androidx.compose.material.icons.outlined.CloudDone
-import androidx.compose.material.icons.outlined.Settings
+import androidx.compose.material.icons.outlined.Palette
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
@@ -107,7 +107,7 @@ fun AccountProviderDialog(
             }
 
             AccountSheetAction(
-                icon = Icons.Outlined.Settings,
+                icon = Icons.Outlined.Palette,
                 label = stringResource(R.string.account_interface_settings),
                 description = stringResource(R.string.account_interface_settings_desc),
                 tag = "account_dialog_open_settings",

android/app/src/main/res/values-zh-rCN/strings.xml

@@ -265,7 +265,7 @@
     <string name="settings_style_section">样式</string>
     <string name="settings_renderer_label">渲染器</string>
     <string name="settings_renderer_description">选择应用使用的界面渲染方式</string>
-    <string name="settings_renderer_material3">Material 3</string>
+    <string name="settings_renderer_material3">Material</string>
     <string name="settings_renderer_miuix">Miuix</string>
     <string name="settings_theme_section">主题</string>
     <string name="settings_theme_label">主题模式</string>
@@ -291,7 +291,7 @@
     <string name="settings_theme_entry">主题</string>
     <string name="settings_theme_entry_description">配色、明暗、视觉效果与缩放</string>
     <string name="settings_theme_detail_title">主题</string>
-    <string name="settings_renderer_primary">Material 3</string>
+    <string name="settings_renderer_primary">Material</string>
     <string name="settings_renderer_secondary">Miuix</string>
     <string name="settings_navigation_floating_description">让底部导航独立悬浮在页面内容上方</string>
     <string name="settings_accent_label">强调色</string>
@@ -344,8 +344,8 @@
     <string name="account_current">当前账户</string>
     <string name="account_greeting">%1$s，您好</string>
     <string name="account_connection_method">连接方式</string>
-    <string name="account_interface_settings">界面设置</string>
+    <string name="account_interface_settings">主题</string>
-    <string name="account_interface_settings_desc">主题、渲染风格与交互偏好</string>
+    <string name="account_interface_settings_desc">配色、明暗、视觉效果与缩放</string>
     <string name="account_logout">退出当前会话</string>
     <string name="account_logout_desc">结束当前连接并返回登录流程</string>
     <string name="account_logout_confirm">确定退出当前会话吗？</string>

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

@@ -265,7 +265,7 @@
     <string name="settings_style_section">Style</string>
     <string name="settings_renderer_label">Renderer</string>
     <string name="settings_renderer_description">Choose the interface renderer used by the app</string>
-    <string name="settings_renderer_material3">Material 3</string>
+    <string name="settings_renderer_material3">Material</string>
     <string name="settings_renderer_miuix">Miuix</string>
     <string name="settings_theme_section">Theme</string>
     <string name="settings_theme_label">Theme mode</string>
@@ -291,7 +291,7 @@
     <string name="settings_theme_entry">Theme</string>
     <string name="settings_theme_entry_description">Colors, brightness, effects and scale</string>
     <string name="settings_theme_detail_title">Theme</string>
-    <string name="settings_renderer_primary">Material 3</string>
+    <string name="settings_renderer_primary">Material</string>
     <string name="settings_renderer_secondary">Miuix</string>
     <string name="settings_navigation_floating_description">Use a detached navigation surface above page content</string>
     <string name="settings_accent_label">Accent color</string>
@@ -344,8 +344,8 @@
     <string name="account_current">Current account</string>
     <string name="account_greeting">Hello, %1$s</string>
     <string name="account_connection_method">Connection method</string>
-    <string name="account_interface_settings">Interface settings</string>
+    <string name="account_interface_settings">Theme</string>
-    <string name="account_interface_settings_desc">Theme, renderer and interaction preferences</string>
+    <string name="account_interface_settings_desc">Colors, brightness, effects and scale</string>
     <string name="account_logout">Sign out</string>
     <string name="account_logout_desc">End the current connection and return to sign-in</string>
     <string name="account_logout_confirm">Sign out of the current session?</string>

android/core/designsystem/build.gradle.kts

@@ -38,6 +38,7 @@ dependencies {
     implementation(libs.compose.ui.tooling.preview)
     implementation(libs.compose.material3)
     implementation(libs.compose.material.icons.extended)
+    implementation(libs.androidx.activity.compose)
     implementation(libs.miuix.ui.android)
     debugImplementation(libs.compose.ui.tooling)
     screenshotTestImplementation(libs.compose.screenshot.test)

android/core/designsystem/src/main/kotlin/com/flagship/abox/manager/designsystem/Components.kt

@@ -1,5 +1,7 @@
 package com.flagship.abox.manager.designsystem
 
+import androidx.activity.compose.BackHandler
+
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
@@ -45,6 +47,9 @@ import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
@@ -677,3 +682,16 @@ fun RowScope.ABoxNavigationBarItem(
         ),
     )
 }
+
+@Composable
+fun ABoxBackLayer(
+    onBack: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    content: @Composable () -> Unit,
+) {
+    BackHandler(enabled = enabled, onBack = onBack)
+    Box(modifier = modifier.fillMaxSize()) {
+        content()
+    }
+}

android/core/designsystem/src/main/kotlin/com/flagship/abox/manager/designsystem/Theme.kt

@@ -101,7 +101,7 @@ internal fun ABoxThemeContent(
         LocalABoxBlurEnabled provides resolution.blurEnabled,
         LocalABoxNavigationPresentation provides preferences.navigationPresentation,
         LocalABoxLiquidGlassEnabled provides preferences.liquidGlassEnabled,
-        LocalABoxPredictiveBackEnabled provides preferences.predictiveBackEnabled,
+        LocalABoxPredictiveBackEnabled provides false,
     ) {
         renderer.Render(
             resolution = resolution,

android/core/designsystem/src/main/kotlin/com/flagship/abox/manager/designsystem/tokens/ABoxTokens.kt

@@ -2,10 +2,13 @@ package com.flagship.abox.manager.designsystem.tokens
 
 import androidx.compose.runtime.Immutable
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.lerp
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 import com.flagship.abox.manager.preferences.AppThemeMode
 import com.flagship.abox.manager.preferences.AccentPreference
+import com.flagship.abox.manager.preferences.ColorStandard
+import com.flagship.abox.manager.preferences.ColorStyle
 import com.flagship.abox.manager.preferences.DesignRenderer
 import com.flagship.abox.manager.preferences.UiPreferences
 
@@ -122,7 +125,13 @@ object ABoxThemeResolver {
         val colorTokens = if (preferences.dynamicColorEnabled && sdkInt >= 31 && dynamicColorTokens != null) {
             dynamicColorTokens
         } else {
-            brandTokens.withAccent(preferences.accentPreference, isDarkTheme)
+            ABoxAccentPalette.resolve(
+                base = brandTokens,
+                accent = preferences.accentPreference,
+                style = preferences.colorStyle,
+                standard = preferences.colorStandard,
+                dark = isDarkTheme,
+            )
         }
         val shapeTokens = when (preferences.renderer) {
             DesignRenderer.MATERIAL3 -> ABoxThemeDefaults.material3Shapes
@@ -139,13 +148,86 @@ object ABoxThemeResolver {
     }
 }
 
-private fun ABoxColorTokens.withAccent(accent: AccentPreference, dark: Boolean): ABoxColorTokens {
+object ABoxAccentPalette {
-    val selected = when (accent) {
+    fun preview(
-        AccentPreference.BLUE -> if (dark) Color(0xFF9CCAFF) else Color(0xFF385F9D)
+        accent: AccentPreference,
-        AccentPreference.GREEN -> if (dark) Color(0xFF7EDFA7) else Color(0xFF247A4B)
+        style: ColorStyle,
-        AccentPreference.AMBER -> if (dark) Color(0xFFFFC46B) else Color(0xFF8A5800)
+        standard: ColorStandard,
-        AccentPreference.ROSE -> if (dark) Color(0xFFFFB1C1) else Color(0xFFA43C59)
+        dark: Boolean,
-        AccentPreference.VIOLET -> if (dark) Color(0xFFD4BBFF) else Color(0xFF6D52A2)
+    ): Color = resolve(
+        base = if (dark) ABoxThemeDefaults.darkColors else ABoxThemeDefaults.lightColors,
+        accent = accent,
+        style = style,
+        standard = standard,
+        dark = dark,
+    ).primary
+
+    fun resolve(
+        base: ABoxColorTokens,
+        accent: AccentPreference,
+        style: ColorStyle,
+        standard: ColorStandard,
+        dark: Boolean,
+    ): ABoxColorTokens {
+        val source = source(accent, dark)
+        val primary = when (style) {
+            ColorStyle.TONAL_SPOT -> lerp(source, base.surface, if (dark) 0.08f else 0.12f)
+            ColorStyle.EXPRESSIVE -> expressive(accent, dark)
+            ColorStyle.FIDELITY -> source
+        }
+        val deviceSensor = when (style) {
+            ColorStyle.EXPRESSIVE -> expressiveSensor(accent, dark)
+            ColorStyle.FIDELITY -> lerp(source, base.success, 0.38f)
+            ColorStyle.TONAL_SPOT -> base.deviceSensor
+        }
+        val deviceInfrared = when (style) {
+            ColorStyle.EXPRESSIVE -> expressiveInfrared(accent, dark)
+            ColorStyle.FIDELITY -> lerp(source, base.deviceInfrared, 0.46f)
+            ColorStyle.TONAL_SPOT -> base.deviceInfrared
+        }
+        val styled = base.copy(
+            primary = primary,
+            deviceSocket = primary,
+            deviceSensor = deviceSensor,
+            deviceInfrared = deviceInfrared,
+        )
+        return when (standard) {
+            ColorStandard.SPEC_2021 -> styled
+            ColorStandard.SPEC_2025 -> styled.copy(
+                surface = if (dark) Color(0xFF0C1114) else Color(0xFFFAF9FC),
+                surfaceContainer = if (dark) Color(0xFF242C30) else Color(0xFFE9E8EE),
+                outline = if (dark) Color(0xFFA7B2B7) else Color(0xFF596267),
+                primary = lerp(primary, if (dark) Color.White else Color.Black, 0.08f),
+                deviceSocket = lerp(primary, if (dark) Color.White else Color.Black, 0.08f),
+            )
+        }
+    }
+
+    private fun source(accent: AccentPreference, dark: Boolean): Color = when (accent) {
+        AccentPreference.BLUE -> if (dark) Color(0xFF9CCAFF) else Color(0xFF4F6FA9)
+        AccentPreference.GREEN -> if (dark) Color(0xFF7EDFA7) else Color(0xFF2F7D57)
+        AccentPreference.AMBER -> if (dark) Color(0xFFFFC46B) else Color(0xFFA66700)
+        AccentPreference.ROSE -> if (dark) Color(0xFFFFB1C1) else Color(0xFFA94C68)
+        AccentPreference.VIOLET -> if (dark) Color(0xFFD4BBFF) else Color(0xFF7659A8)
+    }
+
+    private fun expressive(accent: AccentPreference, dark: Boolean): Color = when (accent) {
+        AccentPreference.BLUE -> if (dark) Color(0xFF72D6FF) else Color(0xFF006B91)
+        AccentPreference.GREEN -> if (dark) Color(0xFF69E6B1) else Color(0xFF007A54)
+        AccentPreference.AMBER -> if (dark) Color(0xFFFFC24B) else Color(0xFF9A5C00)
+        AccentPreference.ROSE -> if (dark) Color(0xFFFFA8C4) else Color(0xFFB12F62)
+        AccentPreference.VIOLET -> if (dark) Color(0xFFC9B5FF) else Color(0xFF7048B8)
+    }
+
+    private fun expressiveSensor(accent: AccentPreference, dark: Boolean): Color = when (accent) {
+        AccentPreference.BLUE, AccentPreference.VIOLET -> if (dark) Color(0xFF78DFA2) else Color(0xFF26764A)
+        AccentPreference.GREEN, AccentPreference.AMBER -> if (dark) Color(0xFF79D6F3) else Color(0xFF006985)
+        AccentPreference.ROSE -> if (dark) Color(0xFFFFC45F) else Color(0xFF8B5B00)
+    }
+
+    private fun expressiveInfrared(accent: AccentPreference, dark: Boolean): Color = when (accent) {
+        AccentPreference.BLUE, AccentPreference.GREEN -> if (dark) Color(0xFFD1B8FF) else Color(0xFF7453A5)
+        AccentPreference.AMBER, AccentPreference.ROSE -> if (dark) Color(0xFF9FCBFF) else Color(0xFF38639A)
+        AccentPreference.VIOLET -> if (dark) Color(0xFFFFB0C7) else Color(0xFFA43E62)
     }
-    return copy(primary = selected, deviceSocket = selected)
 }

android/core/designsystem/src/test/kotlin/com/flagship/abox/manager/designsystem/tokens/ABoxThemeResolverTest.kt

@@ -26,8 +26,26 @@ class ABoxThemeResolverTest {
         )
 
         assertFalse(light.isDarkTheme)
-        assertEquals(ABoxThemeDefaults.lightColors, light.colorTokens)
+        assertEquals(
-        assertEquals(ABoxThemeDefaults.darkColors, dark.colorTokens)
+            ABoxAccentPalette.resolve(
+                ABoxThemeDefaults.lightColors,
+                UiPreferences().accentPreference,
+                UiPreferences().colorStyle,
+                UiPreferences().colorStandard,
+                false,
+            ),
+            light.colorTokens,
+        )
+        assertEquals(
+            ABoxAccentPalette.resolve(
+                ABoxThemeDefaults.darkColors,
+                UiPreferences().accentPreference,
+                UiPreferences().colorStyle,
+                UiPreferences().colorStandard,
+                true,
+            ),
+            dark.colorTokens,
+        )
     }
 
     @Test
@@ -42,7 +60,16 @@ class ABoxThemeResolverTest {
             dynamicColorTokens = dynamicTokens,
         )
 
-        assertEquals(ABoxThemeDefaults.lightColors, resolution.colorTokens)
+        assertEquals(
+            ABoxAccentPalette.resolve(
+                ABoxThemeDefaults.lightColors,
+                UiPreferences().accentPreference,
+                UiPreferences().colorStyle,
+                UiPreferences().colorStandard,
+                false,
+            ),
+            resolution.colorTokens,
+        )
     }
 
     @Test
@@ -57,7 +84,16 @@ class ABoxThemeResolverTest {
             dynamicColorTokens = dynamicTokens,
         )
 
-        assertEquals(ABoxThemeDefaults.darkColors, resolution.colorTokens)
+        assertEquals(
+            ABoxAccentPalette.resolve(
+                ABoxThemeDefaults.darkColors,
+                UiPreferences().accentPreference,
+                UiPreferences().colorStyle,
+                UiPreferences().colorStandard,
+                true,
+            ),
+            resolution.colorTokens,
+        )
     }
 
     @Test

android/feature/infrared/src/main/kotlin/com/flagship/abox/manager/infrared/hub/InfraredHubScreen.kt

@@ -50,7 +50,6 @@ import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBar
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.SwapVert
-import androidx.activity.compose.BackHandler
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
@@ -71,6 +70,7 @@ import androidx.compose.ui.unit.sp
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.flagship.abox.manager.designsystem.ABoxSurface
+import com.flagship.abox.manager.designsystem.ABoxBackLayer
 import com.flagship.abox.manager.designsystem.ABoxIconButton
 import com.flagship.abox.manager.designsystem.ABoxDeviceDetailScaffold
 import com.flagship.abox.manager.designsystem.icon.ABoxIcon
@@ -157,8 +157,6 @@ internal fun InfraredHubScreen(
     var showCreateDialog by remember { mutableStateOf(false) }
     var showManagement by remember { mutableStateOf(false) }
 
-    BackHandler(enabled = showManagement) { showManagement = false }
-
     LaunchedEffect(state.message) {
         state.message?.let { msg ->
             when (msg) {
@@ -188,18 +186,16 @@ internal fun InfraredHubScreen(
 
     ABoxDeviceDetailScaffold(
         title = state.savedDeviceName.value,
-        subtitle = if (showManagement) stringResource(R.string.infrared_settings_subtitle) else stringResource(R.string.infrared_center_subtitle),
+        subtitle = stringResource(R.string.infrared_center_subtitle),
         icon = ABoxIconKey.INFRARED,
-        onBack = if (showManagement) ({ showManagement = false }) else onBack,
+        onBack = onBack,
         action = {
-            if (!showManagement) {
             ABoxIconButton(
                 key = ABoxIconKey.EDIT,
                 contentDescription = stringResource(R.string.infrared_manage_action),
                 onClick = { showManagement = true },
                 modifier = Modifier.testTag("hub_settings_button"),
             )
-            }
         },
     ) { innerPadding ->
         ABoxSurface(
@@ -207,16 +203,7 @@ internal fun InfraredHubScreen(
                 .fillMaxSize()
                 .padding(innerPadding),
         ) {
-            if (showManagement) {
+            Column(
-                InfraredManagementScreen(
-                    state = state,
-                    onAddRemote = { showCreateDialog = true },
-                    onDeleteRemote = onDeleteRemote,
-                    onSaveDeviceName = onSaveDeviceName,
-                    onMoveRemote = onMoveRemote,
-                    onUpdateRemote = onUpdateRemote,
-                )
-            } else Column(
                 modifier = Modifier
                     .fillMaxSize()
                     .padding(horizontal = 16.dp, vertical = 10.dp),
@@ -299,6 +286,30 @@ internal fun InfraredHubScreen(
         }
     }
 
+    if (showManagement) {
+        ABoxBackLayer(onBack = { showManagement = false }) {
+            ABoxDeviceDetailScaffold(
+                title = state.savedDeviceName.value,
+                subtitle = stringResource(R.string.infrared_settings_subtitle),
+                icon = ABoxIconKey.INFRARED,
+                onBack = { showManagement = false },
+            ) { innerPadding ->
+                ABoxSurface(
+                    modifier = Modifier.fillMaxSize().padding(innerPadding),
+                ) {
+                    InfraredManagementScreen(
+                        state = state,
+                        onAddRemote = { showCreateDialog = true },
+                        onDeleteRemote = onDeleteRemote,
+                        onSaveDeviceName = onSaveDeviceName,
+                        onMoveRemote = onMoveRemote,
+                        onUpdateRemote = onUpdateRemote,
+                    )
+                }
+            }
+        }
+    }
+
     if (showCreateDialog) {
         CreateVirtualRemoteDialog(
             onDismiss = { showCreateDialog = false },