如何在文件android中保存具有Pair值的对象arrayList

我想保存一个连接数组列表，这些连接在文件中具有 Pairs 值，但它显示 NotSerializedException。

我还实现了可序列化接口。 我以为它发生在双人班上。如果您有任何解决方案可以保存这些连接数组并从文件中检索。

连接.kt

data class Connection(
//    @Transient
    var firstPair: Pair<CircuitComponent, Int>,
//    @Transient
    var secondPair: Pair<CircuitComponent, Int>
) :Serializable{

    var pathOfLine: NamedPath = NamedPath("")

    data class State(
        val firstComponentCode: String,
        val secondComponentCode: String,
        val firstTouchPointIndex: Int,
        val secondTouchPointIndex: Int,
        val pathName: String,
    ): Serializable


     fun getState() = State(
        firstPair.first.getCode(),
        secondPair.first.getCode(),
        firstPair.second,
        secondPair.second,
        pathOfLine.name
    )
}

保存连接的数组列表

val projectsDirectory = File("${requireActivity().filesDir}/projects")
projectsDirectory.mkdir()
val thisProjectDirectory = File("${projectsDirectory}/${args.project.customerName}")
thisProjectDirectory.mkdir()
val file = File(thisProjectDirectory, "/image.jpg")
val out = FileOutputStream(file)
args.project.image = file.absolutePath
args.project.dateModified = SimpleDateFormat("MMMM dd yyyy", Locale.getDefault()).format(Date())
args.project.size = "${thisProjectDirectory.length() / 1000} kb"
serialize(thisProjectDirectory.absolutePath,"list_con.ser", connectionsList)
designBitmap.compress(Bitmap.CompressFormat.JPEG, 50, out)
out.close()

序列化方法

fun serialize(location:String,fileName:String,obj:Any){
 val fileOutputStream = FileOutputStream("$location/$fileName")
 val objectOutputStream = ObjectOutputStream(fileOutputStream)
 objectOutputStream.writeObject(obj)
 objectOutputStream.close()
}

获取连接

val projectLocation = "${requireActivity().filesDir}/projects/${args.project.customerName}"
val projectDirectory = File(projectLocation)
val connectionsList= deserialize(File(projectDirectory , "list_con.ser"))

反序列化

fun deserialize(file: File): Any? {
    val fileInputStream = FileInputStream(file)
    val objectInputStream = ObjectInputStream(fileInputStream)
    return objectInputStream.readObject()
}