Load image from url in notification Android

Question

In my android application, i want to set Notification icons dynamically which will be loaded from URL. For that, i have used setLargeIcon property of Notificati

Answer 1

Since image is loaded from internet, it should be done async in a background thread. Either use async task or Glide (for efficient image loading).

To load image notification, you need to use "NotificationCompat.BigPictureStyle()". This requires a bitmap (which has to be extracted from image url)

Most of the API's and methods of Glide are now deprecated. Below is working with Glide 4.9 and upto Android 10.

 // Load bitmap from image url on background thread and display image notification
        private void getBitmapAsyncAndDoWork(String imageUrl) {

            final Bitmap[] bitmap = {null};

            Glide.with(getApplicationContext())
                    .asBitmap()
                    .load(imageUrl)
                    .into(new CustomTarget() {
                        @Override
                        public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition transition) {

                            bitmap[0] = resource;
                            // TODO Do some work: pass this bitmap
                            displayImageNotification(bitmap[0]);
                        }

                        @Override
                        public void onLoadCleared(@Nullable Drawable placeholder) {
                        }
                    });
        }

Display the image notification once, the bitmap is ready.

private void displayImageNotification(Bitmap bitmap) {

      NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext(), getChannelId());
            builder
                    .setContentTitle(title)
                    .setContentText(subtext)
                    .setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE)
                    .setSmallIcon(SMALL_ICON)
                    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                    .setColor(getApplicationContext().getColor(color))
                    .setAutoCancel(true)
                    .setOngoing(false)
                    .setOnlyAlertOnce(true)
                    .setContentIntent(pendingIntent)
                     .setStyle(
                     new NotificationCompat.BigPictureStyle().bigPicture(bitmap))
                    .setPriority(Notification.PRIORITY_HIGH);

        getManager().notify(tag, id, builder.build());
}