ResultHandler in kotlin

ResultHandler.kt

package top.kikt.imagescanner.util


import android.os.Handler
import android.os.Looper
import io.flutter.plugin.common.MethodChannel

class ResultHandler(var result: MethodChannel.Result?) {

    companion object {
        private val handler = Handler(Looper.getMainLooper())
    }
    
    private var isReply = false

    fun reply(any: Any?) {
        if(isReply){
            return
        }
        isReply = true
        val result = this.result
        this.result = null
        handler.post {
            result?.success(any)
        }
    }

    fun replyError(code: String, message: String? = null, obj: Any? = null) {
        if(isReply){
            return
        }
        isReply = true
        val result = this.result
        this.result = null
        handler.post {
            result?.error(code, message, obj)
        }
    }

    fun notImplemented() {
        if(isReply){
            return
        }
        isReply = true
        val result = this.result
        this.result = null
        handler.post {
            result?.notImplemented()
        }
    }

    fun success(any: Any?) {
        reply(any)
    }

}