Compose CoordinatorLayout

Screenshot

Structure

详细说明

Usage

// collapsable + pin + LazyColumn
@Composable
fun SimpleScreen() {
 Column(
 Modifier
 .fillMaxSize()
 .background(Color.White)
 .systemBarsPadding()
 ) {
 val coroutineScope = rememberCoroutineScope()
 val lazyListState = rememberLazyListState()
 val coordinatorState = rememberCoordinatorState()
 var uiState by remember { mutableStateOf(DemoState()) }
 var hasRecent by remember { mutableStateOf(false) }
 Box(
 modifier = Modifier
 .height(50.dp)
 .fillMaxWidth()
 .padding(horizontal = 20.dp),
 contentAlignment = Alignment.CenterStart
 ) {
 DemoTitle()
 Button(onClick = { hasRecent = !hasRecent }, modifier = Modifier.align(Alignment.CenterEnd)) { }
 }
 HorizontalDivider(color = AppColors.Divider)
 CoordinatorLayout(
 nestedScrollableState = { lazyListState },
 state = coordinatorState,
 modifier = Modifier.fillMaxSize(),
 collapsableContent = {
 Column {
 if (hasRecent) {
 Box(modifier = Modifier
 .fillMaxWidth()
 .height(300.dp)
 .background(AppColors.Theme))
 }
 TopCard()
 }
 },
 ) {
 Column(Modifier.fillMaxSize()) {
 TabBar(
 tabList = uiState.tabList,
 selectedTabIndex = uiState.selectedTab,
 ) {
 // 吸顶
 coroutineScope.launch {
 uiState = uiState.copy(selectedTab = it)
 coordinatorState.animateToCollapsed()
 }
 }
 LazyColumn(Modifier.fillMaxSize(), state = lazyListState) {
 items(30) {
 Box(
 Modifier
 .fillMaxWidth()
 .height(50.dp)
 .padding(horizontal = 15.dp),
 contentAlignment = Alignment.CenterStart
 ) {
 Text(
 text = "Item $it",
 textAlign = TextAlign.Center,
 )
 HorizontalDivider(
 thickness = 0.7.dp,
 color = AppColors.Divider,
 modifier = Modifier.align(Alignment.BottomStart)
 )
 }
 }
 }
 }
 }
 }
}