Set a bitmap image in ImageView

I’m a beginner in Kotlin and Android Studio and I would like to request for help to resolve this question:

  1. Download an image from the URL;

  2. Create Adapter module to receive bitmap;

  3. Show image through ImageView object

  4. I managed to resolve the first item with this simpler method. The next step is to improve with some library, but it’s working.

private fun downloadImage(item: Item) = Thread {

val imageConnection = URL(imageItem.url).openConnection() as HttpURLConnection

try {
    if (photosConnection.responseCode == HTTP_OK) {
        runOnUiThread {
            val bitmap = BitmapFactory.decodeStream(photosConnection.inputStream)
            activityMainBinding.objImageView.apply {
            // Implementar o novo Adapter                    
    } else {
            Toast.makeText(this, " Deu erro !!!", Toast.LENGTH_SHORT).show()
} catch ( e: Exception)  {
} finally {


  1. Create adapter module

I tried to make this adapter which is what I had as a reference. But inheriting from ArrayAdapter I understood that not compatible with Bitmap type. I was also unsure about the object (android.R.layout) normally I use (android.R.layout.simple_list_item_1)when they are String list applications. But in this case I didn’t find similar, for example (android.R.layout.image).

class ImageAdapter ( private val activityContext: Context, private val imageList: MutableList >): ArrayAdapter(activityContext, android.R.layout.simple_list_item_1, photosList) {

private data class ImageHolder( val imageVw: ImageView )

override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {

    val imageView = convertView ?: LayoutInflater.from(activityContext)
        .inflate(android.R.layout.simple_list_item_1,parent,false).apply {
            tag = ImageHolder(findViewById(

    (imageView.tag as ImageHolder)imageVw.setImageBitmap = imageList[position]

    return imageView


I appreciate any help