AvatarViewActivity.java

AvatarView avatarView;
IImageLoader imageLoader;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    avatarView = (AvatarView) findViewById(R.id.avatar_view_example);

    imageLoader = new PicassoLoader();
    imageLoader.loadImage(avatarView, "http:/example.com/user/someUserAvatar.png", "User Name");
}