The below example code will helps you to get Image from URL by using glide library and to wait for image until it loaded.  For this in below example I have added glide library in  build.gradle file then I am using Glide with MainActivity class and get (position) into imageView.In below example when you have clicked on button then image will get displayed  from URL.

Step(1)-I have added first glide library in  build.gradle file

      compile 'com.github.bumptech.glide:glide:3.7.0'

Step(2)-MainActivity -
                       

button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                          //progressBar
                final ProgressBar progressBar = (ProgressBar) findViewById(R.id.progress);
                progressBar.setVisibility(View.VISIBLE);

            //Using Glide class
                Glide.with(MainActivity.this)
                        .load("http://www.androidbegin.com/tutorial/flag/unitedstates.png")
                        .into(new GlideDrawableImageViewTarget(image) {
                            @Override
                            public void onResourceReady(GlideDrawable drawable, GlideAnimation anim) {
                                super.onResourceReady(drawable, anim);
                                progressBar.setVisibility(View.GONE);

                            }
                        });