问题描述
我想滚动到ScrollableColumn内的特定项目,但是如何在不猜测的情况下获取所需的初始scrollValue?
我希望滚动在可组合的TopAppBar结束之后开始
@ExperimentalMaterialApi
@Composable
fun Content(data: DataObj,onEditAction: () -> Unit) {
val items = listOf("a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","")
val scrollState = rememberScrollState(140f)
Surface(contentColor = Color.DarkGray) {
ScrollableColumn(scrollState = scrollState,modifier = Modifier.fillMaxSize()) {
TopAppBar(
title = { Text("Edit Entry") },backgroundColor = Color.Transparent,actions = {
IconButton(onClick = onEditAction) {
Icon(asset = Icons.Filled.Edit)
}
}
)
LazyColumnFor(items) { item ->
Surface(Modifier.preferredHeight(50.dp).fillMaxWidth()) {
Text(item)
}
}
}
}
}
解决方法
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