Kotlin Interface Listener inheritance Error

leesungyoen

package com.ishidakorea.test02

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import java.lang.Exception

class MainActivity : AppCompatActivity(), A.interA, Child.interChild
{
override fun Child_EventFire()
{
// Child Class Listener
}
override fun A_SendPost()
{
// AA Class Listener
}

override fun onCreate(savedInstanceState: Bundle?)
{
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity\_main)

    var A1 = A()

}

}

class A : Child(), Child.interChild {

interface interA
{
    fun A\_SendPost()
}

lateinit var LinstenerA : A.interA

init {
    LinstenerA = this@A as A.interA // Exception
}

fun FireA()
{
    if (LinstenerA != null)
        LinstenerA.A\_SendPost()
}

override fun Child\_EventFire()
{

}

}

open class Child {

interface interChild
{
    fun Child\_EventFire()
}

lateinit var LinstenerB : interChild

init {
        LinstenerB = this@Child as interChild // OK
}

fun Fire()
{
    if (LinstenerB != null)
        LinstenerB.Child\_EventFire()
}

}

An error occurs while creating a new listener from a parent class that inherits a child class that has a listener.

Why is that?

If you know anyone, please advise.

Lost User

leesungyoen wrote:

An error occurs

What error, and where does it occur?

SeanChupas

leesungyoen wrote:

Why is that? If you know anyone, please advise.

Since there are 143,213,227 possible errors, I don't think we should guess. It would help if you would post the actual error message.

David Crow

Does the message appear during compilation or execution? If the latter, should you be using try/catch blocks to help trap the error?

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