How to load IconCompat with AdaptiveBitmap using Glide

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How to leverage Glide cache for loading notification icons? Those are IconCompat used in the Person object in the MessagingStyle notifications and Shortcuts. Also, Bubbles require using both of those.

I used Glid as fallowing:

private IconCompat loadIcon(String url) throws ExecutionException, InterruptedException {
    RequestOptions requestOptions = new RequestOptions().override(ADAPTIVE_BITMAP_SIZE);
    Bitmap bitmap = Glide.with(G.app).asBitmap().apply(requestOptions).load(url).submit().get();
    return IconCompat.createWithAdaptiveBitmap(bitmap);
}

I got several questions about this solution

  • What should be the size of ADAPTIVE_BITMAP_SIZE?
  • When will the bitmap get recycled?
  • How to handle errors in loading the bitmap?
android-bubbles android-glide android-notifications android
1 Answers

Create a custom TargetWrapper for the async loading icon. The config your Glide using your TargetWrapper instance.

asyncLoadIcon("http://YOUR_URL.com"){
    val person = Person.Builder()
        .setName("John Doe")
        .setIcon(it)

    notificationManagerHelper.notify(
        person.build()
    )
}

Helper function for async loading bitmap then wrap into Icon

 private fun asyncLoadIcon(avatar: String?, block: (IconCompat?) -> Unit) {
        if (avatar.isNullOrEmpty())
            block(null)
        else {
            GlideHelper.createWithAdaptiveBitmap(requireContext(), avatar) { result ->
                if (result?.isSuccess() == true)
                    block(IconCompat.createWithAdaptiveBitmap(result.toData()))
                else block(null)
            }
        }
    }

Here is the Glide image request function with retrieving bitmap with a callback.

fun createWithAdaptiveBitmap(
    context: Context,
    url: String,
    listener: ((Result<Bitmap>?) -> Unit)
) {
    val options = RequestOptions()
        .diskCacheStrategy(DiskCacheStrategy.DATA)
        .override(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
        .dontTransform()

    Glide.with(context)
        .asBitmap()
        .apply(options)
        .load(url)
        .into(CustomTargetWrapper(listener))
}

CustomTargetWrapper class for async loading bitmap.

class CustomTargetWrapper(
    private val listener: ((Result<Bitmap>?) -> Unit)
) : CustomTarget<Bitmap>() {

    override fun onResourceReady(resource: Bitmap, transition: Transition<in Bitmap>?) {
        listener.invoke(Result.Success(resource))
    }

    override fun onLoadCleared(placeholder: Drawable?) {
        listener.invoke(null)
    }

    override fun onLoadFailed(errorDrawable: Drawable?) {
        super.onLoadFailed(errorDrawable)
        listener.invoke(Result.Error(IOException("Glide load failed")))
    }
}
user_45154380
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