AndreVero

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

        val asyncImageView = findViewById<ImageViewAsync>(R.id.asyncImageView)
        asyncImageView.setUrl(
            "Some image url"
        )
    }

AndreVero

var counter = 0
val bitmap = async {
  while (counter < 3) {
    try {
      return@async loadBitmap(url)
    } catch (e: Exception) {
      e.printStackTrace()
    }
  counter++
  }

AndreVero

val hashMap = ConcurrentHashMap<String, Deferred<Bitmap?>>()
//...
val bitmap = async { loadBitmap(url) }
//...
bitmap?.await()?.let { setImageBitmap(it) }

AndreVero

val hashMap = ConcurrentHashMap<String, Bitmap?>()

job = scope.launch {
    val bitmap = if (hashMap.containsKey(url)) {
        hashMap[url]
    } else {
        val bitmap = loadBitmap(url)
        if (!hashMap.containsKey(url)) {
            hashMap[url] = bitmap
            bitmap

AndreVero

private var job: Job? = null

fun setUrl(url: String) {
  job?.cancel()
  job = scope.launch { 
    // ... 
  }
}

AndreVero

private val scope = CoroutineScope(Dispatchers.IO)

    fun setUrl(url: String) {
        scope.launch {
            val bitmap = loadBitmap(url)

            withContext(Dispatchers.Main) {
                setImageBitmap(bitmap)
            }
        }

AndreVero

class ImageViewAsync @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = 0
) : AppCompatImageView(context, attrs, defStyleAttr) {

    fun setUrl(url: String) {
        val bitmap = loadBitmap(url)
        setImageBitmap(bitmap)
    }

AndreVero

onItemPicked = {
   scope.launch {
       rotationAnimation.animateTo(
           if (it.isDayTime) 0f else 180f,
           defaultSpringSpec
       )
   }
},

AndreVero

val defaultSpringSpec = remember {
   FloatSpringSpec(
       dampingRatio = Spring.DampingRatioNoBouncy,
       stiffness = Spring.StiffnessVeryLow,
   )
}

val rotationAnimation = remember {
   Animatable(180f)
}

AndreVero

@Composable
fun SunMoonComponent(
   rotation: Float,
   modifier: Modifier = Modifier,
) {
   Box(
       modifier = modifier
   ) {
       Icon(
           painter = painterResource(id = R.drawable.icon_house),