android images

!!images.md

Images - loading in Android

1. using Asynctask
2. using Glide
3. using Picaso

1_load_image_in_background.java

// Using an AsyncTask to load the slow images in a background thread
new AsyncTask<ViewHolder, Void, Bitmap>() {
    private ViewHolder v;

    @Override
    protected Bitmap doInBackground(ViewHolder... params) {
        v = params[0];
        return mFakeImageLoader.getImage();
    }

    @Override
    protected void onPostExecute(Bitmap result) {
        super.onPostExecute(result);
        if (v.position == position) {
            // If this item hasn't been recycled already, hide the
            // progress and set and show the image
            v.progress.setVisibility(View.GONE);
            v.icon.setVisibility(View.VISIBLE);
            v.icon.setImageBitmap(result);
        }
    }
}.execute(holder);

2_load_image_with_glide.java

Glide.with(this)
                .load(imageUrl)
                .diskCacheStrategy(DiskCacheStrategy.ALL)
                .centerCrop()
                .into(new GlideDrawableImageViewTarget(mDetailImage) {
                    @Override
                    public void onResourceReady(GlideDrawable resource,
                                                GlideAnimation<? super GlideDrawable> animation) {
                        super.onResourceReady(resource, animation);
                        EspressoIdlingResource.decrement(); // App is idle.
                    }
                }

3_load_image_with_picaso.java

Picasso.get().load("http://i.imgur.com/DvpvklR.png").into(imageView);