Android Image Caching

how to cache images?

Here is an example step-by-step on how to cache images, in memory and disk:

http://androidexample.com/Download_Images_From_Web_And_Lazy_Load_In_ListView_-_Android_Example/index.php?view=article_discription&aid=112&aaid=134

But you can also use libs that already work pretty well like :

http://square.github.io/picasso/

The first link also contains explanation on how you should treat bitmaps to avoid outOfMemory.

Coil image caching

Try disabling the cache headers support.

val imageLoader = ImageLoader.Builder(context)
        .respectCacheHeaders(false)
        .build()
Coil.setImageLoader(imageLoader)

Android Image caching

You can simple use Picasso library to handle this, it wil do everything for you

Picasso.with(context).load(R.drawable.drawableName).into(imageView);

In your adapter :

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;

        if (convertView == null) {

            holder = new ViewHolder();
            convertView = inflater.inflate(R.layout.list_item, parent, false);
            holder.imageView = (ImageView) convertView.findViewById(R.id.imageView);

            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        Picasso.with(context).load(R.drawable.drawableName).into(imageView);
        return convertView;
    }

    class ViewHolder {
        ImageView imageView;
    }

Link: https://github.com/square/picasso

Or if you still not like to use Picasso, let's comment, i'll share you some class to modify image, save to cache and load up, but it so long...

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