#11 [feat] : 바텀 네비게이션 구현

app/src/main/java/com/sopt/now/compose/feature/nav/BottomNavigation.kt

@@ -0,0 +1,47 @@
+package com.sopt.now.compose.feature.nav
+
+import androidx.compose.material3.Icon
+import androidx.compose.material3.NavigationBar
+import androidx.compose.material3.NavigationBarItem
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.res.painterResource
+import androidx.navigation.NavController
+import androidx.navigation.compose.currentBackStackEntryAsState
+
+@Composable
+fun BottomNavigation(navController: NavController) {
+    val items = listOf<BottomNavItem>(
+        BottomNavItem.Home,
+        BottomNavItem.Search,
+        BottomNavItem.MyPage
+    )
+
+    val navBackStackEntry by navController.currentBackStackEntryAsState()
+    val currentRoute = navBackStackEntry?.destination?.route
+    NavigationBar {
+        items.forEachIndexed { index, item ->
+            NavigationBarItem(
+                icon = {
+                    val iconPainter = painterResource(id = item.icon)
+                    Icon(
+                        painter = iconPainter,
+                        contentDescription = item.label
+                    )
+                },
+                label = { Text(item.label) },
+                selected = currentRoute == item.screenRoute,
+                onClick = {
+                    navController.navigate(item.screenRoute) {
+                        navController.graph.startDestinationRoute?.let {
+                            popUpTo(it) { saveState = true }
+                        }
+                        launchSingleTop = true
+                        restoreState = true
+                    }
+                }
+            )
+        }
+    }
+}