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MainActivity Code Snippets
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package jsmart.LoadImage;

import java.io.*;
import java.net.*;

public class MainActivity extends AppCompatActivity
{

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ImageView targetImage = (ImageView)findViewById(R.id.targetPicture);
    TextView errmsg = (TextView)findViewById(R.id.errorMsg);

    //Load bitmap from internet
    String onLineImage = "http://public.rwanda.cmu.edu/cbishop/jsmart/notes/clientServer.jpg";
    URL onLineURL;

    try
    {
        onLineURL = new URL(onLineImage);
        new MyNetworkTask(targetImage, errmsg).execute(onLineURL);
    }
    catch (MalformedURLException e)
    {
        e.printStackTrace();
    }
}

private class MyNetworkTask extends AsyncTask<URL, Void, Bitmap>
{

    ImageView picture;
    TextView errmsg;
    String error = "";

    public MyNetworkTask(ImageView iv, TextView text)
    {
        picture = iv;
        errmsg = text;
    }

    @Override
    protected Bitmap doInBackground(URL... urls)
    {
        Bitmap networkBitmap = null;

        URL networkUrl = urls[0]; //Load the first element
        try
        {
            URLConnection connection = networkUrl.openConnection();
            connection.setConnectTimeout(15 * 1000);
            InputStream stream = connection.getInputStream();
            networkBitmap = BitmapFactory.decodeStream(stream);
        }
        catch (IOException e)
        {
            e.printStackTrace();
            error = e.getMessage();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }

        return networkBitmap;
    }
    @Override
    protected void onPostExecute(Bitmap result)
    {
        picture.setImageBitmap(result);
        errmsg.setText(error);
    }

}
}