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Update compose dac snippets #1020

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8f61919
Migrate 1P compose code to 3P DAC
aniketkam-cyb Aug 12, 2026
37cb80d
Migrate 1P compose code to 3P DAC
aniketkam-cyb Aug 12, 2026
55a7cbd
Merge branch 'main' into update-compose-dac-snippets
aniketkam-cyb Aug 12, 2026
44b5996
Resolve merge conflicts.
aniketkam-cyb Aug 13, 2026
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229 changes: 229 additions & 0 deletions compose/snippets/src/main/java/com/example/compose/snippets/components/AppBar.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.itemsIndexed
Expand All @@ -32,6 +33,7 @@ import androidx.compose.material.icons.automirrored.filled.ArrowBack
import androidx.compose.material.icons.filled.Add
import androidx.compose.material.icons.filled.Check
import androidx.compose.material.icons.filled.Edit
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.icons.filled.Image
import androidx.compose.material.icons.filled.Menu
import androidx.compose.material.icons.filled.Mic
Expand All @@ -41,13 +43,16 @@ import androidx.compose.material3.BottomAppBarDefaults
import androidx.compose.material3.Button
import androidx.compose.material3.CenterAlignedTopAppBar
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
import androidx.compose.material3.FloatingActionButton
import androidx.compose.material3.FloatingActionButtonDefaults
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.LargeFlexibleTopAppBar
import androidx.compose.material3.LargeTopAppBar
import androidx.compose.material3.ListItem
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.MediumFlexibleTopAppBar
import androidx.compose.material3.MediumTopAppBar
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Surface
Expand All @@ -61,6 +66,7 @@ import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
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.input.nestedscroll.nestedScroll
import androidx.compose.ui.text.style.TextOverflow
Expand All @@ -85,6 +91,10 @@ fun AppBarExamples(
"topBarLarge" -> LargeTopAppBarExample()
"topBarNavigation" -> TopBarNavigationExample { navigateBack() }
"multiSelection" -> AppBarMultiSelectionExample()
"topBarSubtitle" -> SimpleCenterAlignedTopAppBarWithSubtitle()
"topBarEnterAlways" -> EnterAlwaysTopAppBar()
"topBarMediumFlexible" -> ExitUntilCollapsedCenterAlignedMediumFlexibleTopAppBar()
"topBarLargeFlexible" -> ExitUntilCollapsedCenterAlignedLargeFlexibleTopAppBar()
else -> AppBarOptions(
toBottom = { selection = "bottomBar" },
toTopBarSmall = { selection = "topBar" },
Expand All @@ -93,6 +103,10 @@ fun AppBarExamples(
toTopBarLarge = { selection = "topBarLarge" },
toTopBarNavigation = { selection = "topBarNavigation" },
toMultiSelection = { selection = "multiSelection" },
toTopBarSubtitle = { selection = "topBarSubtitle" },
toTopBarEnterAlways = { selection = "topBarEnterAlways" },
toTopBarMediumFlexible = { selection = "topBarMediumFlexible" },
toTopBarLargeFlexible = { selection = "topBarLargeFlexible" },
)
}
}
Expand All @@ -107,6 +121,10 @@ fun AppBarOptions(
toTopBarLarge: () -> Unit,
toTopBarNavigation: () -> Unit,
toMultiSelection: () -> Unit,
toTopBarSubtitle: () -> Unit,
toTopBarEnterAlways: () -> Unit,
toTopBarMediumFlexible: () -> Unit,
toTopBarLargeFlexible: () -> Unit,
) {
Column() {
Button({ toBottom() }) {
Expand All @@ -130,6 +148,18 @@ fun AppBarOptions(
Button({ toMultiSelection() }) {
Text("Top bar with multi selection list")
}
Button({ toTopBarSubtitle() }) {
Text("Top bar with subtitle")
}
Button({ toTopBarEnterAlways() }) {
Text("Enter always top bar")
}
Button({ toTopBarMediumFlexible() }) {
Text("Medium flexible top bar")
}
Button({ toTopBarLargeFlexible() }) {
Text("Large flexible top bar")
}
}
}

Expand Down Expand Up @@ -552,3 +582,202 @@ private fun LazyListMultiSelectionPreview() {
modifier = Modifier
)
}

// [START android_compose_expressive_components_centeralignedtopappbarwithsubtitle]
@OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
@Composable
fun SimpleCenterAlignedTopAppBarWithSubtitle() {
val scrollBehavior = TopAppBarDefaults.pinnedScrollBehavior()
Scaffold(
modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
topBar = {
TopAppBar(
title = { Text("Simple TopAppBar", maxLines = 1, overflow = TextOverflow.Ellipsis) },
subtitle = { Text("Subtitle", maxLines = 1, overflow = TextOverflow.Ellipsis) },
titleHorizontalAlignment = Alignment.CenterHorizontally,
navigationIcon = {
IconButton(onClick = { /* onBackClick() */ }) {
Icon(
imageVector = Icons.AutoMirrored.Filled.ArrowBack,
contentDescription = "Localized description",
)
}
},
actions = {
IconButton(onClick = { /* doSomething() */ }) {
Icon(imageVector = Icons.Filled.Favorite, contentDescription = "Localized description")
}
},
scrollBehavior = scrollBehavior,
)
},
content = { innerPadding ->
LazyColumn(contentPadding = innerPadding, verticalArrangement = Arrangement.spacedBy(8.dp)) {
val list = (0..75).map { it.toString() }
items(count = list.size) {
Text(
text = list[it],
style = MaterialTheme.typography.bodyLarge,
modifier = Modifier.fillMaxWidth().padding(horizontal = 16.dp),
)
}
}
},
)
}
// [END android_compose_expressive_components_centeralignedtopappbarwithsubtitle]

@Preview
@Composable
private fun SimpleCenterAlignedTopAppBarWithSubtitlePreview() {
SimpleCenterAlignedTopAppBarWithSubtitle()
}

// [START android_compose_expressive_components_alwaysentertopappbar]
@OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
@Composable
fun EnterAlwaysTopAppBar() {
val scrollBehavior = TopAppBarDefaults.enterAlwaysScrollBehavior()
Scaffold(
modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
topBar = {
TopAppBar(
title = { Text("TopAppBar", maxLines = 1, overflow = TextOverflow.Ellipsis) },
subtitle = { Text("Subtitle", maxLines = 1, overflow = TextOverflow.Ellipsis) },
navigationIcon = {
IconButton(onClick = { /* onBackClick() */ }) {
Icon(
imageVector = Icons.AutoMirrored.Filled.ArrowBack,
contentDescription = "Localized description",
)
}
},
actions = {
IconButton(onClick = { /* doSomething() */ }) {
Icon(imageVector = Icons.Filled.Favorite, contentDescription = "Localized description")
}
},
scrollBehavior = scrollBehavior,
)
},
content = { innerPadding ->
LazyColumn(contentPadding = innerPadding, verticalArrangement = Arrangement.spacedBy(8.dp)) {
val list = (0..75).map { it.toString() }
items(count = list.size) {
Text(
text = list[it],
style = MaterialTheme.typography.bodyLarge,
modifier = Modifier.fillMaxWidth().padding(horizontal = 16.dp),
)
}
}
},
)
}
// [END android_compose_expressive_components_alwaysentertopappbar]

@Preview
@Composable
private fun EnterAlwaysTopAppBarPreview() {
EnterAlwaysTopAppBar()
}

// [START android_compose_expressive_components_exituntillcollapsedtopappbar]
@OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
@Composable
fun ExitUntilCollapsedCenterAlignedMediumFlexibleTopAppBar() {
val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior()
Scaffold(
modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
topBar = {
MediumFlexibleTopAppBar(
title = { Text("Medium TopAppBar", maxLines = 1, overflow = TextOverflow.Ellipsis) },
subtitle = { Text("Subtitle", maxLines = 1, overflow = TextOverflow.Ellipsis) },
titleHorizontalAlignment = Alignment.CenterHorizontally,
navigationIcon = {
IconButton(onClick = { /* onBackClick() */ }) {
Icon(
imageVector = Icons.AutoMirrored.Filled.ArrowBack,
contentDescription = "Localized description",
)
}
},
actions = {
IconButton(onClick = { /* doSomething() */ }) {
Icon(imageVector = Icons.Filled.Favorite, contentDescription = "Localized description")
}
},
scrollBehavior = scrollBehavior,
)
},
content = { innerPadding ->
LazyColumn(contentPadding = innerPadding, verticalArrangement = Arrangement.spacedBy(8.dp)) {
val list = (0..75).map { it.toString() }
items(count = list.size) {
Text(
text = list[it],
style = MaterialTheme.typography.bodyLarge,
modifier = Modifier.fillMaxWidth().padding(horizontal = 16.dp),
)
}
}
},
)
}
// [END android_compose_expressive_components_exituntillcollapsedtopappbar]

@Preview
@Composable
private fun ExitUntilCollapsedCenterAlignedMediumFlexibleTopAppBarPreview() {
ExitUntilCollapsedCenterAlignedMediumFlexibleTopAppBar()
}

// [START android_compose_expressive_components_exituntillcollapsedlargetopappbar]
@OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
@Composable
fun ExitUntilCollapsedCenterAlignedLargeFlexibleTopAppBar() {
val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior()
Scaffold(
modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
topBar = {
LargeFlexibleTopAppBar(
title = { Text("Large TopAppBar", maxLines = 1, overflow = TextOverflow.Ellipsis) },
subtitle = { Text("Subtitle", maxLines = 1, overflow = TextOverflow.Ellipsis) },
titleHorizontalAlignment = Alignment.CenterHorizontally,
navigationIcon = {
IconButton(onClick = { /* onBackClick() */ }) {
Icon(
imageVector = Icons.AutoMirrored.Filled.ArrowBack,
contentDescription = "Localized description",
)
}
},
actions = {
IconButton(onClick = { /* doSomething() */ }) {
Icon(imageVector = Icons.Filled.Favorite, contentDescription = "Localized description")
}
},
scrollBehavior = scrollBehavior,
)
},
content = { innerPadding ->
LazyColumn(contentPadding = innerPadding, verticalArrangement = Arrangement.spacedBy(8.dp)) {
val list = (0..75).map { it.toString() }
items(count = list.size) {
Text(
text = list[it],
style = MaterialTheme.typography.bodyLarge,
modifier = Modifier.fillMaxWidth().padding(horizontal = 16.dp),
)
}
}
},
)
}
// [END android_compose_expressive_components_exituntillcollapsedlargetopappbar]

@Preview
@Composable
private fun ExitUntilCollapsedCenterAlignedLargeFlexibleTopAppBarPreview() {
ExitUntilCollapsedCenterAlignedLargeFlexibleTopAppBar()
}
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