Change specific icon of bottom navigation view with with image url.

activity_dashboard.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/white">

        <FrameLayout
            android:id="@+id/frameLayout"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            app:layout_constraintBottom_toTopOf="@id/appBarContainer"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/appBarContainer"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/dashboard_purple"
            android:elevation="16dp"
            app:layout_constraintBottom_toBottomOf="parent">

            <com.google.android.material.bottomnavigation.BottomNavigationView
                android:id="@+id/bottomNavigation"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:elevation="16dp"
                android:padding="8dp"
                app:labelVisibilityMode="labeled"
                app:menu="@menu/menu_dashboard" />

        </com.google.android.material.appbar.AppBarLayout>
    </androidx.constraintlayout.widget.ConstraintLayout>

</layout>

build.gradle

 implementation 'com.github.bumptech.glide:glide:4.12.0'
 annotationProcessor 'com.github.bumptech.glide:compiler:4.12.0'
 implementation 'jp.wasabeef:glide-transformations:4.3.0'

Dashboard.kt

package com.sway.android.screens.dashboard

import android.content.Context
import android.content.Intent
import android.graphics.Bitmap
import android.graphics.Color
import android.graphics.drawable.BitmapDrawable
import android.graphics.drawable.Drawable
import android.os.Bundle
import android.view.Menu
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.Observer
import butterknife.BindView
import butterknife.ButterKnife
import com.bumptech.glide.Glide
import com.bumptech.glide.request.RequestOptions
import com.bumptech.glide.request.target.CustomTarget
import com.bumptech.glide.request.target.SimpleTarget
import com.bumptech.glide.request.transition.Transition
import com.google.android.material.bottomnavigation.BottomNavigationView
import com.squareup.picasso.Picasso
import com.squareup.picasso.Target
import com.sway.android.R
import com.sway.android.screens.chat.ChatFragment
import com.sway.android.screens.company_discover.CompanyDiscoverFragment
import com.sway.android.screens.company_profile.CompanyProfileFragment
import com.sway.android.screens.company_search.CompanySearchFragment
import com.sway.android.screens.influencer_discover.InfluencerDiscoverFragment
import com.sway.android.screens.influencer_search.InfluencerSearchFragment
import com.sway.android.screens.offer.OffersFragment
import com.sway.android.screens.profile.ProfileFragment
import com.sway.android.utils.*
import org.koin.android.viewmodel.ext.android.viewModel
import timber.log.Timber
import java.lang.Exception

class DashboardActivity : AppCompatActivity() {

    companion object {

        fun start(context: Context) {
            val intent = Intent(context, DashboardActivity::class.java)
            intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
            context.startActivity(intent)
        }
    }

    @BindView(R.id.bottomNavigation)
    lateinit var bottomNavigationView: BottomNavigationView

    private val localViewModel: DashboardViewModel by viewModel()

    lateinit var menu: Menu

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        changeStatusBarColor(Color.TRANSPARENT)

        setContentView(R.layout.activity_dashboard)
        ButterKnife.bind(this)
        configureViewModel()
        configureViews()
    }

    override fun onDestroy() {
        localViewModel.clear()
        super.onDestroy()
    }

    private fun configureViews() {
        bottomNavigationView.setOnNavigationItemSelectedListener {
            renderSelectedItem(it.itemId)
            true
        }


        menu = bottomNavigationView.menu

        /*Picasso.get().load(getProfileImage())
            .placeholder(R.drawable.logo_profile)
            .resize(20, 20)
            .into(target)
*/
        bottomNavigationView.itemIconTintList = null
        val menuItem = menu.findItem(R.id.action_profile)
        Glide.with(this)
            .asBitmap()
            .load(getProfileImage())
            .apply(
                RequestOptions
                    .circleCropTransform()
                    .override(20, 20)
                    .placeholder(R.drawable.logo_profile)
            )
            .into(object : CustomTarget<Bitmap>() {
                override fun onResourceReady(resource: Bitmap, transition: Transition<in Bitmap>?) {
                    menuItem?.icon = BitmapDrawable(resources, resource)
                }

                override fun onLoadCleared(placeholder: Drawable?) {

                }
            })
        localViewModel.selectAction(R.id.action_discover)
    }

    val target: Target = object : Target {
        override fun onBitmapLoaded(bitmap: Bitmap?, from: Picasso.LoadedFrom?) {
            Timber.e("onBitmapLoaded")
            menu.getItem(4).icon = BitmapDrawable(resources, bitmap)
        }

        override fun onBitmapFailed(e: Exception?, errorDrawable: Drawable?) {
            Timber.e("onBitmapFailed")
        }

        override fun onPrepareLoad(placeHolderDrawable: Drawable?) {
            Timber.e("onPrepareLoad")
            menu.getItem(4).icon = getDrawable(R.drawable.logo_profile)
        }
    }

    private fun configureViewModel() {
        localViewModel.listenForNavigationActions()

        localViewModel.navigationItemLiveData.observe(
            this,
            Observer { item ->
                bottomNavigationView.selectedItemId = item
            }
        )
    }

    private fun renderSelectedItem(item: Int) {
        val userType = getStringPref(USER_TYPE, INFLUENCER)
        when (item) {
            R.id.action_offers -> {
                OffersFragment.loadFragment(this)
            }
            R.id.action_chats -> {
                ChatFragment.loadFragment(this)
            }
            R.id.action_discover -> {
                if (userType == INFLUENCER) {
                    InfluencerDiscoverFragment.loadFragment(this)
                } else {
                    CompanyDiscoverFragment.loadFragment(this)
                }
            }
            R.id.action_search -> {
                if (userType == INFLUENCER) {
                    InfluencerSearchFragment.loadFragment(this)
                } else {
                    CompanySearchFragment.loadFragment(this)
                }
            }
            R.id.action_profile -> {
                if (userType == INFLUENCER) {
                    ProfileFragment.loadFragment(this)
                } else {
                    CompanyProfileFragment.loadFragment(this)
                }
            }
            else -> {
            }
        }
    }
}

menu_dashboard.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/action_offers"
        android:enabled="true"
        android:icon="@drawable/logo_offers"
        android:title="@string/menu_item_offers"
        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/action_chats"
        android:enabled="true"
        android:icon="@drawable/logo_chats"
        android:title="@string/menu_item_chats"
        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/action_discover"
        android:enabled="true"
        android:icon="@drawable/logo_discover"
        android:title="@string/menu_item_discover"
        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/action_search"
        android:enabled="true"
        android:icon="@drawable/logo_list"
        android:title="@string/menu_item_list"
        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/action_profile"
        android:enabled="true"
        android:title="@string/menu_item_profile"
        app:showAsAction="ifRoom" />
</menu>