启动应用程序时,如何使lazyRow 转到最后一个索引?
问问题
534 次
2 回答
2
@Composable
fun MessageList(messages: List<Message>) {
val listState = rememberLazyListState()
// Remember a CoroutineScope to be able to launch
val coroutineScope = rememberCoroutineScope()
LazyColumn(state = listState) {
// ...
}
ScrollToTopButton(
onClick = {
coroutineScope.launch {
// Animate scroll to the first item
listState.animateScrollToItem(index = lastIndex)
}
}
)
}
你可以为 LazyRow 做同样的事情
于 2021-04-16T12:26:30.560 回答
0
您可以使用以下方法animateScrollToItem
:
就像是:
val itemsList = //... your list
val listState = rememberLazyListState()
// Remember a CoroutineScope to be able to launch
val coroutineScope = rememberCoroutineScope()
LazyColumn(state = listState) {
items(itemsList){
Text( "Item $it" )
}
}
要自动启动,您可以使用:
DisposableEffect(Unit) {
coroutineScope.launch {
listState.animateScrollToItem(index = itemsList.size-1)
}
onDispose { }
}
于 2021-04-16T12:58:04.593 回答