更新主活动和ViewModel工厂

app-android/app/src/main/java/com/huaga/life_echo/MainActivity.kt

@@ -5,36 +5,59 @@ import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.padding
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.AccountBox
-import androidx.compose.material.icons.filled.Favorite
-import androidx.compose.material.icons.filled.Home
-import androidx.compose.material3.Icon
-import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
-import androidx.compose.material3.adaptive.navigationsuite.NavigationSuiteScaffold
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.*
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.tooling.preview.PreviewScreenSizes
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.core.view.WindowCompat
+import androidx.core.view.WindowInsetsControllerCompat
+import androidx.navigation.compose.currentBackStackEntryAsState
 import androidx.navigation.compose.rememberNavController
+import android.view.WindowManager
 import com.huaga.life_echo.navigation.AppNavigation
 import com.huaga.life_echo.navigation.Screen
+import com.huaga.life_echo.ui.icons.AppIcons
 import com.huaga.life_echo.ui.theme.LifeechoTheme
+import com.huaga.life_echo.ui.theme.LightPurple
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        // 启用边缘到边缘显示
         enableEdgeToEdge()
+        // 设置系统栏透明
+        WindowCompat.setDecorFitsSystemWindows(window, false)
+        
+        // 设置状态栏完全透明
+        window.statusBarColor = android.graphics.Color.TRANSPARENT
+        window.navigationBarColor = android.graphics.Color.TRANSPARENT
+        
+        // 设置状态栏控制器，让内容可以延伸到状态栏下方
+        val windowInsetsController = WindowCompat.getInsetsController(window, window.decorView)
+        windowInsetsController.isAppearanceLightStatusBars = !com.huaga.life_echo.ui.settings.AppSettings.darkMode
+        
         setContent {
-            LifeechoTheme {
+            val darkMode = com.huaga.life_echo.ui.settings.AppSettings.darkMode
+            LifeechoTheme(darkTheme = darkMode) {
+                // 根据主题更新状态栏图标颜色
+                androidx.compose.runtime.LaunchedEffect(darkMode) {
+                    val windowInsetsController = WindowCompat.getInsetsController(window, window.decorView)
+                    windowInsetsController.isAppearanceLightStatusBars = !darkMode
+                }
                 LifeechoApp()
             }
         }
@@ -46,45 +69,104 @@ class MainActivity : ComponentActivity() {
 @Composable
 fun LifeechoApp() {
     val navController = rememberNavController()
-    var currentDestination by rememberSaveable { mutableStateOf(AppDestinations.HOME) }
+    var currentDestination by rememberSaveable { mutableStateOf(AppDestinations.CHAT) }
     
-    NavigationSuiteScaffold(
-        navigationSuiteItems = {
-            AppDestinations.entries.forEach {
-                item(
-                    icon = {
-                        Icon(
-                            it.icon,
-                            contentDescription = it.label
-                        )
-                    },
-                    label = { Text(it.label) },
-                    selected = it == currentDestination,
-                    onClick = { 
-                        currentDestination = it
-                        when (it) {
-                            AppDestinations.HOME -> navController.navigate(Screen.CreateMemory.route)
-                            AppDestinations.FAVORITES -> navController.navigate(Screen.MyMemoir.route)
-                            AppDestinations.PROFILE -> navController.navigate(Screen.Profile.route)
-                        }
-                    }
-                )
-            }
-        }
+    // 获取当前路由，判断是否显示底部导航栏
+    val navBackStackEntry by navController.currentBackStackEntryAsState()
+    val currentRoute = navBackStackEntry?.destination?.route
+    val shouldShowBottomBar = currentRoute != null && !currentRoute.startsWith("create_memory")
+
+    Scaffold(
+        modifier = Modifier.fillMaxSize(),
+        bottomBar = {
+            // 底部导航栏 - 只在非聊天详情页显示
+            if (shouldShowBottomBar) {
+                Surface(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .windowInsetsPadding(WindowInsets.navigationBars)
+                    .padding(bottom = 8.dp),
+                color = MaterialTheme.colorScheme.surface,
+                shape = RoundedCornerShape(topStart = 16.dp, topEnd = 16.dp),
+                shadowElevation = 8.dp
             ) {
-        Scaffold(modifier = Modifier.fillMaxSize()) {
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 8.dp),
+                    horizontalArrangement = Arrangement.SpaceEvenly,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    AppDestinations.entries.forEach { destination ->
+                        BottomNavItem(
+                            destination = destination,
+                            isSelected = currentDestination == destination,
+                            onClick = {
+                                currentDestination = destination
+                                when (destination) {
+                                    AppDestinations.CHAT -> navController.navigate(Screen.ConversationList.route) {
+                                        popUpTo(Screen.ConversationList.route) { inclusive = true }
+                                    }
+                                    AppDestinations.MEMOIR -> navController.navigate(Screen.MyMemoir.route) {
+                                        popUpTo(Screen.ConversationList.route) { inclusive = false }
+                                    }
+                                    AppDestinations.PROFILE -> navController.navigate(Screen.Profile.route) {
+                                        popUpTo(Screen.ConversationList.route) { inclusive = false }
+                                    }
+                                }
+                            }
+                        )
+                    }
+                }
+            }
+            }
+        }
+    ) { paddingValues ->
+        Box(modifier = Modifier.padding(paddingValues)) {
             AppNavigation(navController = navController)
         }
     }
 }
 
+@Composable
+fun BottomNavItem(
+    destination: AppDestinations,
+    isSelected: Boolean,
+    onClick: () -> Unit
+) {
+    val iconColor = if (isSelected) LightPurple else MaterialTheme.colorScheme.onSurfaceVariant
+    val textColor = if (isSelected) LightPurple else MaterialTheme.colorScheme.onSurfaceVariant
+    
+    Column(
+        modifier = Modifier
+            .clickable { onClick() }
+            .padding(horizontal = 16.dp, vertical = 4.dp),
+        horizontalAlignment = Alignment.CenterHorizontally,
+        verticalArrangement = Arrangement.Center
+    ) {
+        Icon(
+            imageVector = destination.icon,
+            contentDescription = destination.label,
+            tint = iconColor,
+            modifier = Modifier.size(24.dp)
+        )
+        Spacer(modifier = Modifier.height(4.dp))
+        Text(
+            text = destination.label,
+            fontSize = 12.sp,
+            color = textColor,
+            fontWeight = if (isSelected) FontWeight.Bold else FontWeight.Normal
+        )
+    }
+}
+
 enum class AppDestinations(
     val label: String,
     val icon: ImageVector,
 ) {
-    HOME("Home", Icons.Default.Home),
-    FAVORITES("Favorites", Icons.Default.Favorite),
-    PROFILE("Profile", Icons.Default.AccountBox),
+    CHAT("聊天", AppIcons.Chat),
+    MEMOIR("回忆录", AppIcons.Memoir),
+    PROFILE("我的", AppIcons.Profile),
 }
 
 @Composable

app-android/app/src/main/java/com/huaga/life_echo/ui/viewmodel/ViewModelFactory.kt

@@ -33,6 +33,11 @@ class ViewModelFactory(private val context: Context) : ViewModelProvider.Factory
                     chapterRepository = chapterRepository
                 ) as T
             }
+            modelClass.isAssignableFrom(ConversationListViewModel::class.java) -> {
+                ConversationListViewModel(
+                    conversationRepository = conversationRepository
+                ) as T
+            }
             modelClass.isAssignableFrom(MyMemoirViewModel::class.java) -> {
                 MyMemoirViewModel(
                     chapterRepository = chapterRepository,