msfjarvis/compose-lobsters
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Separate out BottomNavigation to its own composable

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Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
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Harsh Shandilya 2020-11-09 12:47:37 +05:30
parent 7b4e8a8f68
commit 5b66b440ce
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GPG key ID: 366D7BBAD1031E80
1 changed files with 27 additions and 20 deletions
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47
app/src/main/java/dev/msfjarvis/lobsters/ui/main/MainActivity.kt
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@ -14,6 +14,7 @@ import androidx.compose.runtime.getValue
import androidx.compose.ui.platform.setContent
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.viewinterop.viewModel
import androidx.navigation.NavHostController
import androidx.navigation.compose.KEY_ROUTE
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.composable
@ -57,26 +58,7 @@ fun LobstersApp() {
Scaffold(
bottomBar = {
BottomNavigation {
val navBackStackEntry by navController.currentBackStackEntryAsState()
val currentRoute = navBackStackEntry?.arguments?.getString(KEY_ROUTE)
destinations.forEach { screen ->
BottomNavigationItem(
icon = { IconResource(resourceId = screen.badgeRes) },
label = { Text(stringResource(id = screen.labelRes)) },
selected = currentRoute == screen.route,
onClick = {
// This if check gives us a "singleTop" behavior where we do not create a
// second instance of the composable if we are already on that destination
if (currentRoute != screen.route) {
// This is the equivalent to popUpTo the start destination
navController.popBackStack(navController.graph.startDestination, false)
navController.navigate(screen.route)
}
}
)
}
}
LobstersBottomNav(navController, destinations)
},
) {
val hottestPostsListState = rememberLazyListState()
@ -98,3 +80,28 @@ fun LobstersApp() {
}
}
}
@Composable
fun LobstersBottomNav(
navController: NavHostController,
destinations: Array<Destination>,
) {
BottomNavigation {
val navBackStackEntry by navController.currentBackStackEntryAsState()
val currentRoute = navBackStackEntry?.arguments?.getString(KEY_ROUTE)
destinations.forEach { screen ->
BottomNavigationItem(
icon = { IconResource(resourceId = screen.badgeRes) },
label = { Text(stringResource(id = screen.labelRes)) },
selected = currentRoute == screen.route,
alwaysShowLabels = false,
onClick = {
navController.popBackStack(navController.graph.startDestination, false)
if (currentRoute != screen.route) {
navController.navigate(screen.route)
}
}
)
}
}
}