android - 如何在 Jetpack Compose 中制作上下文菜单？

Question

我在Jetpack Compose中有一个列表项，我想在我的项目中按onLongClick项目添加上下文菜单，但我在互联网上没有找到任何资源。有什么想法吗？

@Composable
fun MyScreen() {     
    val textState = remember { mutableStateOf(TextFieldValue("")) }  
    val listOfData = listOf(
        MyUser(“Davidson” :),
        MyUser(“Angel” :),
        MyUser(“Marry” :),
    )
 Column(
        modifier = Modifier
            .fillMaxSize()
    ) {
       LazyColumn(
            modifier = Modifier
   ) {
            items(listOfData.size) { index ->
                DataListItem(listOfData[index]) {
                }}}}}
fun DataListItem(
    data: MyUser,
    onLongClick: () -> Unit
) {
 val context = LocalContext.current
    val interactionSource = remember { MutableInteractionSource() }
    Column(
    ) {
        val expanded = remember { mutableStateOf(false)}
        Row(
            modifier = Modifier
                .fillMaxWidth()                 
                .combinedClickable(
                    onLongClick = {  expanded.value = true
                        onLongClick()
                    },
                )   ) {               
            Column(
                horizontalAlignment = Alignment.Start,
                ) {
                Text(
                    text = data.user,                    
                ) } }

Answer 1

您可以DropdownMenu在Columm. 就像是：

    var expanded by remember { mutableStateOf(false) }
    Row(
        modifier = Modifier
            .fillMaxWidth()
            .combinedClickable(
                onLongClick = {
                    expanded = true
                }
            )
    ) {
        Column( /* ... */) {
            Text( text = data)
            DropdownMenu(
               expanded = expanded,
               onDismissRequest = { expanded = false }
            ) {
               DropdownMenuItem(/* .. */) { /*...*/}
               //....
           }
        }
    }