Android Jetpack Compose：mutableStateOf 不随流量更新

我有一个ViewModel，它使用Flow从我的Room数据库获取Note对象:

var uiState by mutableStateOf(NoteUiState())
        private set


    private fun getNoteById(argument: Int) {
        viewModelScope.launch {
            try {
                repository.getNoteById(argument).collect { note ->
                    uiState = NoteUiState(note = note)
                }
            } catch (e: Exception) {
                uiState = NoteUiState(error = true)
            }
        }
    }

备注类:

@Entity(tableName = "notes")
data class Note(
    @PrimaryKey(autoGenerate = true) val id: Int = 0,
    @ColumnInfo(name = "title") val title: String = "",
    @ColumnInfo(name = "text") val text: String = "",
) {
    override fun toString() = title
}

这种方法工作得很好，直到我try 用Note对象的值作为它们的缺省值来创建一个可变字符串，这样我就可以更新2个TextField组合:

@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun Note(
    note: DataNote,
    isNewNote: Boolean,
    createNote: (DataNote) -> Unit,
    updateNote: (DataNote) -> Unit,
    back: () -> Unit,
    trued: String,
) {

    var title by remember { mutableStateOf(note.title) }
    var content by remember { mutableStateOf(note.text) }
    TextField(
        value = title,
        onValueChange = { title = it },
        modifier = Modifier
            .fillMaxWidth(),
        placeholder = { Text(text = "Title") },
        colors = TextFieldDefaults.textFieldColors(
            containerColor = Color.Transparent
        )
    )
    TextField(
        value = content,
        onValueChange = { content = it },
        modifier = Modifier
            .fillMaxWidth(),
        placeholder = { Text(text = "Content") },
        colors = TextFieldDefaults.textFieldColors(
            containerColor = Color.Transparent
        )
    )
}

由于某些原因，第一次调用Note对象时它是空的，所以我想要一种更新标题和内容变量的方法.

Note对象本身更新时没有问题，但是标题和内容变量永远不会从初始值更改.如何更新标题和内容变量，同时使它们适用于文本字段？