private static final String picpic = "picpic";
private ArrayList < HashMap < String, Object>> myBooks;
myBooks = new ArrayList<HashMap<String,Object>>();
HashMap < String, Object> hm;
hm = new HashMap<String, Object>();
drawable=LoadImage("http://www.wauhaha.com/smart/company/album/pic.jpg");
hm.put(picpic, drawable);
myBooks.add(hm);
final ListView listView = (ListView)findViewById(R.id.list);
SimpleAdapter adapter = new SimpleAdapter(this, myBooks, R.layout.listbox, new String[]{picpic}, new int[]{R.id.image1});
listView.setAdapter(adapter);
See this Example Listview With Custom Adapter.....And see CustomizedListView Activity
ReplyDeletehttp://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/
If you want the Key to be Url then use this code.
ReplyDelete//Declarations
public Map<String, Object> ImageMap = new WeakHashMap<String, Object>();
//Inserting into HashMap
public void addToHash(String url)
{
ImageMap.put(url,LoadImage(url));
}
// Get from HashMap
public Object getImageFromHash(String url)
{
ImageMap.get(url);
}
EDITED
You can use the Solution given by Samir,
you need to use ImageLoader.java, ImageCache.java, FileCache.java and Utils.java
For your adapter
public class LazyAdapter extends BaseAdapter {
private Activity activity;
private ArrayList<String> urls;
private static LayoutInflater inflater=null;
public ImageLoader imageLoader;
public LazyAdapter(Activity a, ArrayList<String> u) {
activity = a;
urls=u;
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
imageLoader=new ImageLoader(activity.getApplicationContext());
}
public int getCount() {
return data.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi=convertView;
if(convertView==null)
vi = inflater.inflate(R.layout.listbox, null);
ImageView thumb_image=(ImageView)vi.findViewById(your.imageview.id); // thumb image
imageLoader.DisplayImage(urls.get(position), thumb_image);
return vi;
}
}