LocalBroadcastReceiverActivity.kt

package com.codehangouts.sampleapp.memoryleak.kotlin.broadcast

import android.app.Activity
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.content.IntentFilter
import android.os.Bundle

import com.example.myapplication.R

class LocalBroadcastReceiverActivity : Activity() {

    private var localBroadcastReceiver: BroadcastReceiver? = null

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

    private fun registerBroadCastReceiver() {
        localBroadcastReceiver = object : BroadcastReceiver() {
            override fun onReceive(context: Context, intent: Intent) {
                //Write your code here.
            }
        }
        registerReceiver(localBroadcastReceiver, IntentFilter("android.net.conn.CONNECTIVITY_CHANGE"))
    }

    override fun onStart() {
        super.onStart()
        registerBroadCastReceiver()
    }

    override fun onStop() {
        super.onStop()
        /*
         * Broadcast receiver holds the implicit reference of Activity.Therefore even if activity is destroy,
         *  garbage collector will not be able to remove its instance.
         * */
        if (localBroadcastReceiver != null) {
            unregisterReceiver(localBroadcastReceiver)
        }
    }
}