downloading an image

by Will » Mon, 02 Mar 2009 11:25:24 GMT

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 How do I download an image? Is there an easy way, given a URL, to
download a .jpg into res/drawable?
I'm trying to download an image and then display it. I'm using a class
that I've tested (but not on android) that downloads an image to a
specified path. When I run it in android, the image doesn't download.
Any help would be SUPER.


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1. list view button error

Hi guys im trying to put a button on each row of a list but i get null
pointer exception, i'll show the java files below. The list view is in
a seperate xml file to the button because button is inside a relative
layout. Can anyone help?.

This class gets data from a database and puts it in array and displays
in a list view which works fine until i try to put a button in each

package project.Maps;
public class SatMain extends Activity {
    /** Called when the activity is first created. */
     ArrayList<String> results = new ArrayList<String>();
    public void onCreate(Bundle savedInstanceState)
        dbAdapter db = new dbAdapter(this);


        //---get all titles---;

        Cursor c =  db.getSat1();

        if (c.moveToFirst())
            do {
                 String pub =  c.getString(c.getColumnIndex
                 String pub1 =  c.getString(c.getColumnIndex

              results.add(pub + pub1 );
            } while (c.moveToNext());

        ListView listProducts;
        List<String> results = new ArrayList<String>();
        Context cont = null;
          customArray ca = new customArray(cont, R.layout.button,
        listProducts = (ListView)findViewById(;

Code for my custom adapter.


package project.Maps;
import java.util.List;
public class customArray extends ArrayAdapter<String> {
     int resource;

     public customArray(Context cont, int _resource, List<String>
results) {
          super (cont, _resource, results);
          resource = _resource;

     public View getView(int position, View convertView, ViewGroup
parent) {
          RelativeLayout rl;

       //   String prod = getItem(position);
          if (convertView == null) {
               rl = new RelativeLayout(getContext());
               LayoutInflater vi = (LayoutInflater)getContext
               vi.inflate(resource, rl, true);
          } else {
               rl = (RelativeLayout)convertView;

          return rl;


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I see some comments that a "LOOKUP_URI" is required but I don't know
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