I'm a bit lost on what I should do.

import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.ImageView;

public class MovieActivity extends Activity {

    @InjectView(R.id.movieTitle) TextView mTitleLabel;
    @InjectView(R.id.movieImage) ImageView mMovieImage;
    @InjectView(R.id.progressBar) ProgressBar mProgressBar;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_movie);
        ButterKnife.inject(this);

        // The rest of the code is omitted for brevity :)
    }

  public void getMovieInfo() { 

        if (isNetworkAvailable()) {
          mProgressBar.setVisability(View.VISIBLE);
            // Some code omitted. Show the progress bar!
        }
    }

    public void updateDisplay(Movie movie) {
        // Some code omitted. Hide the progress bar.
    }
}