为什么不会在我的自定义回收器适配器类和我的自定义活动类之间“打包”传递数据？

Question

我正在尝试使用parcelize将自定义类实例从我的自定义回收器适配器类传递到自定义活动类，但并非所有自定义类属性都正确传递。未传递的实例化类属性是作为在主定制类之外定义的另一个定制类的实例的属性。当我尝试从第二个自定义类读取值时，我得到了null

这是我的自定义类：

package com.riverstonetech.gositeuk.Model

import android.os.Parcelable
import kotlinx.android.parcel.Parcelize

@Parcelize
data class Address(var line1: String? = null): Parcelable {

    var line2: String? = null
    var line3: String? = null
    var line4: String? = null
    var postcode: String? = null
    var phoneNumber: String? = null
    var siteURL: String? = null
}

package com.riverstonetech.gositeuk.Model

import android.os.Parcelable
import kotlinx.android.parcel.Parcelize

@Parcelize
data class Address(var line1: String? = null): Parcelable {

    var line2: String? = null
    var line3: String? = null
    var line4: String? = null
    var postcode: String? = null
    var phoneNumber: String? = null
    var siteURL: String? = null
}

package com.riverstonetech.gositeuk.Model

import android.os.Parcelable
import kotlinx.android.parcel.Parcelize

@Parcelize
data class Coordinate(var Latitude: Double? = null): Parcelable {
    var Longitude: Double? = null
}

这是我的定制回收站适配器类：

package com.riverstonetech.gositeuk

import android.content.Intent
import android.content.res.Resources
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import androidx.core.content.ContextCompat.startActivity
import androidx.recyclerview.widget.RecyclerView
import java.text.DecimalFormat

class SiteAdapter(
    private val mainActivity: CountiesActivity,
    private val siteList: List<Site>) : RecyclerView.Adapter<SiteAdapter.ListItemHolder>() {

    inner class ListItemHolder(val view: View):
        RecyclerView.ViewHolder(view),
        View.OnClickListener {

        internal var name = view.findViewById<View>(R.id.textViewSiteName) as TextView

        internal var distance = view.findViewById<View>(R.id.textViewSiteDistance) as TextView

        internal var price = view.findViewById<View>(R.id.textViewSitePrice) as TextView

        init {

            view.isClickable = true
            view.setOnClickListener(this)

        }

        override fun onClick(view: View) {

//            mainActivity.showDetails(adapterPosition)
            val intent = Intent(mainActivity, Details::class.java)
            intent.putExtra("SELECTED_SITE", siteList[adapterPosition])
            startActivity(mainActivity, intent, null)
        }

    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ListItemHolder {

        val itemView = LayoutInflater.from(parent.context)
            .inflate(R.layout.recycler_list_item, parent, false)

        return ListItemHolder(itemView)

    }

    override fun getItemCount(): Int {

        if (siteList != null) {
            return siteList.size
        }
        // error
        return -1

    }

    override fun onBindViewHolder(holder: ListItemHolder, position: Int) {

        val site = siteList[position]

        holder.name.text = site.name
        holder.distance.text = site.distance.toString() + holder.view.context.getString(R.string.miles)
        val decimalFormatter = DecimalFormat("#,##0")
        holder.price.text = holder.view.context.getString(R.string.poundSign) + decimalFormatter.format(site.price).toString()

    }


}

这是我的自定义活动类：

package com.riverstonetech.gositeuk

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import kotlinx.android.synthetic.main.activity_details.*

class Details : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_details)

        val site = intent.getParcelableExtra<Site>("SELECTED_SITE")
        Log.i("Info", "${site.name}")

        siteNameTextView.text = site.name

        Log.i("line 1", "${site.address.line1}")


    }
}

Answer 1