v0.2.4: One UI 9 & Material 3 Expressive UI/UX Redesign

app/src/main/java/com/hotdeal/alarm/presentation/main/MainScreen.kt

@@ -5,30 +5,39 @@ import android.content.pm.PackageManager
 import android.os.Build
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
-import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.animation.*
+import androidx.compose.animation.core.*
+import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.pager.HorizontalPager
 import androidx.compose.foundation.pager.rememberPagerState
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material.icons.outlined.*
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
-import androidx.compose.runtime.snapshotFlow
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import androidx.navigation.NavHostController
-import androidx.navigation.compose.rememberNavController
-import kotlinx.coroutines.launch
 import com.hotdeal.alarm.presentation.components.PermissionDialog
+import com.hotdeal.alarm.presentation.components.elasticPressClickable
 import com.hotdeal.alarm.presentation.deallist.DealListScreen
 import com.hotdeal.alarm.presentation.settings.SettingsScreen
+import com.hotdeal.alarm.ui.theme.CornerRadius
+import kotlinx.coroutines.launch
 
-@OptIn(ExperimentalFoundationApi::class)
+/**
+ * One UI 9 Fluid Navigation Framework
+ * 한 손 조작성을 극대화한 하단 캡슐 내비게이션 바 및 화면 전환
+ */
 @Composable
-fun MainScreen(
-    viewModel: MainViewModel,
-    navController: NavHostController = rememberNavController()
-) {
+fun MainScreen(viewModel: MainViewModel) {
     val context = LocalContext.current
     val uiState by viewModel.uiState.collectAsStateWithLifecycle()
 
@@ -53,37 +62,92 @@ fun MainScreen(
         }
     }
 
-    val pagerState = rememberPagerState(
-        initialPage = 0,
-        pageCount = { 2 }
-    )
+    val pagerState = rememberPagerState(initialPage = 0, pageCount = { 2 })
     val coroutineScope = rememberCoroutineScope()
-    var currentPage by remember { mutableStateOf(0) }
 
-    LaunchedEffect(pagerState) {
-        snapshotFlow { pagerState.currentPage }.collect { page ->
-            currentPage = page
-        }
-    }
+    Scaffold(
+        bottomBar = {
+            // One UI 9 Fluid Bottom Navigation Bar
+            Surface(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .navigationBarsPadding(),
+                color = MaterialTheme.colorScheme.surface,
+                tonalElevation = 3.dp,
+                border = androidx.compose.foundation.BorderStroke(
+                    0.8.dp,
+                    MaterialTheme.colorScheme.outlineVariant.copy(alpha = 0.25f)
+                )
+            ) {
+                NavigationBar(
+                    containerColor = Color.Transparent,
+                    tonalElevation = 0.dp,
+                    modifier = Modifier.height(64.dp)
+                ) {
+                    val navItems = listOf(
+                        Triple(0, "핫딜 피드", Icons.Filled.LocalFireDepartment to Icons.Outlined.LocalFireDepartment),
+                        Triple(1, "설정 & 관리", Icons.Filled.Tune to Icons.Outlined.Tune)
+                    )
 
-    Column(
-        modifier = Modifier.fillMaxSize()
-    ) {
-        HorizontalPager(
-            state = pagerState,
-            modifier = Modifier.weight(1f)
-        ) { page ->
-            when (page) {
-                0 -> {
-                    DealListScreen(
+                    navItems.forEach { (pageIndex, label, icons) ->
+                        val isSelected = pagerState.currentPage == pageIndex
+                        val (selectedIcon, unselectedIcon) = icons
+
+                        NavigationBarItem(
+                            selected = isSelected,
+                            onClick = {
+                                coroutineScope.launch {
+                                    pagerState.animateScrollToPage(pageIndex)
+                                }
+                            },
+                            icon = {
+                                Icon(
+                                    imageVector = if (isSelected) selectedIcon else unselectedIcon,
+                                    contentDescription = label,
+                                    modifier = Modifier.size(24.dp)
+                                )
+                            },
+                            label = {
+                                Text(
+                                    text = label,
+                                    style = MaterialTheme.typography.labelSmall.copy(
+                                        fontWeight = if (isSelected) FontWeight.Bold else FontWeight.Medium,
+                                        fontSize = 11.sp
+                                    )
+                                )
+                            },
+                            colors = NavigationBarItemDefaults.colors(
+                                selectedIconColor = MaterialTheme.colorScheme.primary,
+                                selectedTextColor = MaterialTheme.colorScheme.primary,
+                                unselectedIconColor = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.7f),
+                                unselectedTextColor = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.7f),
+                                indicatorColor = MaterialTheme.colorScheme.primaryContainer.copy(alpha = 0.6f)
+                            )
+                        )
+                    }
+                }
+            }
+        },
+        contentWindowInsets = WindowInsets(0, 0, 0, 0)
+    ) { paddingValues ->
+        Box(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(paddingValues)
+        ) {
+            HorizontalPager(
+                state = pagerState,
+                modifier = Modifier.fillMaxSize(),
+                beyondBoundsPageCount = 1
+            ) { page ->
+                when (page) {
+                    0 -> DealListScreen(
                         viewModel = viewModel,
                         onNavigateToSettings = {
                             coroutineScope.launch { pagerState.animateScrollToPage(1) }
                         }
                     )
-                }
-                1 -> {
-                    SettingsScreen(viewModel = viewModel)
+                    1 -> SettingsScreen(viewModel = viewModel)
                 }
             }
         }
@@ -98,8 +162,3 @@ fun MainScreen(
         )
     }
 }
-
-sealed class Screen(val route: String) {
-    object DealList : Screen("deal_list")
-    object Settings : Screen("settings")
-}