我的Kotlin / Android代码中发生了一些错误

Question

我的代码中有一些错误，没有解决。我已经为离线SMS应用程序创建了布局。我遵循了为在线SMS应用程序创建的代码。我对代码进行了更改，但在某些地方被卡住了。

我在下面粘贴了我的代码。我想创建类似该图像的布局：

我在Google和YouTube上进行了搜索，但它们都显示了在线SMS应用/聊天应用。

class MessageAdapter(val context: Context) : RecyclerView.Adapter<MessageAdapter.MessageViewHolder>(){

companion object {
    const val VIEW_TYPE_MESSAGE_SENT = 1
   const val VIEW_TYPE_MESSAGE_RECEIVED = 2
}

private val messages: ArrayList<Message> = ArrayList()

fun addMessage(message: Message){
    messages.add(message)
    notifyDataSetChanged()
}

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MessageViewHolder {
    val view: View

    if (viewType == VIEW_TYPE_MESSAGE_SENT) {
        view = LayoutInflater.from(parent.context).inflate(R.layout.my_message, parent, false)
        return MessageViewHolder(view)
    } else  {
        view = LayoutInflater.from(parent.context).inflate(R.layout.other_message, parent, false)
        return OtherMessageViewHolder(view)
    }

}

override fun getItemCount(): Int {
    return messages.size
}

override fun onBindViewHolder(holder: MessageViewHolder, position: Int) {
    val message = messages.get(position)

    holder.bind(message)
}

open inner class MessageViewHolder(view : View) : RecyclerView.ViewHolder(view){
        private var messageText = view.txtMyMessage
        private var timeText = view.txtMyMessageTime
   open fun bind(message:Message){
     messageText.text = message.message
        timeText.text = DateUtils.fromMillisToTimeString(message.time)
    }
}

inner class OtherMessageViewHolder (view: View) : MessageViewHolder(view) {

    internal var messageText: TextView
    internal var timeText: TextView
    internal var nameText: TextView
    internal var profileImage: ImageView

    init {

        messageText = itemView.text_message_body as TextView
        timeText = itemView.text_message_time as TextView
        nameText = itemView.text_message_name as TextView
        profileImage = itemView.image_message_profile as ImageView
    }


    override fun bind(message: Message) {
        messageText.text = message.message
        nameText.text = message.user
        timeText.text = DateUtils.fromMillisToTimeString(message.time)

enter code here:  Utils.displayRoundImageFromUrl(context,message.getSender().getProfileUrl(), profileImage)
    }
}
object DateUtils {
    fun fromMillisToTimeString(millis: Long) : String {
        val format = SimpleDateFormat("hh:mm a", Locale.getDefault())
        return format.format(millis)
    }
}
override fun getItemViewType(position: Int): Int {
    val message = messages.get(position)

    return if(App.user == message.user) {
        VIEW_TYPE_MESSAGE_SENT
    }
    else {
        VIEW_TYPE_MESSAGE_RECEIVED
    }
}

}

预期：

1.In,"`view = LayoutInflater.from(parent.context).inflate(R.layout.my_message, parent, false)`
            return MessageViewHolder(view)",`my_message` layout show.Similarly in else part too.
> 2. In,"`override fun bind(message: Message) {
            messageText.text = message.message
            nameText.text = message.user
            timeText.text = DateUtils.fromMillisToTimeString(message.time)
        }`" of `OtherMessageViewholder` ,`'message','user' and 'time'` show.Similarly in `MessageViewHolder` too.


>3.In "`Utils`",the image of the sender user show which we have saved since it is offline.
>4.In , "`return if(App.user == message.user) {
            VIEW_TYPE_MESSAGE_SENT`" under `getItemViewType` function,replace it with some code that the app include sending and receiving layout since we do not use `LOG IN` feature , also it is offline.

实际结果：

 1. `my_message` is highlighted as unresolved reference.
 2. `'message','user' and 'time'` is highlighted as unresolved reference.
 3. "`Utils` is highlighted as unresolved reference.
 4. `"App"` and `"user"` are highlighted as unresolved reference.