Image loading in Android.

There a lot libraries for loading images. Lets talk about couple of them.

1. Picasso (http://square.github.io/picasso/)

dependency

dependencies {
    compile 'com.squareup.picasso:picasso:2.5.1'
}

This library easy to use. To load image from url to ImageView you need do just one line.

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

Current library have a features which can be useful for your app:

• Image transformation

Picasso.with(context)
  .load(url)
  .resize(50, 50)
  .centerCrop()
  .into(imageView)

• Placeholder for progress and error. Useful to show some drawable if downloading failed or in progress

Picasso.with(context)
    .load(url)
    .placeholder(R.drawable.user_placeholder)
    .error(R.drawable.user_placeholder_error)
    .into(imageView);

• Using Picasso you can load images from resources, file or web

Picasso.with(context).load(R.drawable.landing_screen).into(imageView1);
Picasso.with(context).load("file:///android_asset/DvpvklR.png").into(imageView2);
Picasso.with(context).load(new File(...)).into(imageView3);

1. Glide (https://github.com/bumptech/glide)

Current library is recommended by Google.

dependency

dependencies {
    compile 'com.github.bumptech.glide:glide:3.5.2'
    compile 'com.android.support:support-v4:22.0.0'
}

Usage:

Glide.with(this).load("http://goo.gl/gEgYUd").into(imageView);

Also Glide has a features:

Glide
    .with(myFragment)
    .load(url)
    .centerCrop()
    .placeholder(R.drawable.loading_spinner)
    .crossFade()
    .into(myImageView);

I use Glide because:
1. Faster than Picaso
2. Have better “.with()” method. Glide.with(this) can take Context, Fragment, Activity, etc.

Currently Glide better Image loader library.

Awaiting your comments.