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Description
Today, I was testing my application that uses a custom layout (with imageview inside) and I found out as soon as I scroll in listview, the listview lags then the image appears. Why? Is this an expected behaviour from imageloader when i'm loading images from a database? I am using almost the same code from LazyList.
Here is my code:
SamsungListView offlineadapter = new SamsungListView(ctx, c);
listview.setAdapter(offlineadapter);
SamsungListView Class:
public class SamsungListView extends CursorAdapter {
public com.androidarabia.lazylist.ImageLoader imageLoader;
LayoutInflater mLayoutInflater;
Cursor curs;
LebanonDatabase DbHelper;
ViewHolder holder;
public SamsungListView(Context context, Cursor c) {
super(context, c);
curs = c;
mLayoutInflater = LayoutInflater.from(context);
imageLoader = new com.androidarabia.lazylist.ImageLoader(
context.getApplicationContext());
DbHelper = new LebanonDatabase(context).open();
holder = new ViewHolder();
}
static class ViewHolder {
TextView title_text;
TextView date_text;
ImageView item_image;
TextView del_image;
}
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View v = mLayoutInflater.inflate(R.layout.pricelist, parent, false);
return v;
}
@Override
public void bindView(View v, Context context, Cursor c) {
holder.title_text = (TextView) v.findViewById(R.id.title);
holder.date_text = (TextView) v.findViewById(R.id.modelnumber);
holder.item_image = (ImageView) v.findViewById(R.id.list_image);
holder.del_image = (TextView) v.findViewById(R.id.details);
final String title = c.getString(c
.getColumnIndex(LebanonDatabase.KEY_PHONENAME));
final String date = c.getString(c
.getColumnIndex(LebanonDatabase.KEY_MODELNUMBER));
final String imagePath = c.getString(c
.getColumnIndex(LebanonDatabase.KEY_PRICE));
final String deletion = c.getString(c
.getColumnIndex(LebanonDatabase.KEY_URL));
imageLoader.DisplayImage(deletion, holder.item_image);
holder.title_text.setText(title);
holder.del_image.setText(imagePath + " $");
holder.date_text.setText(date);
}
Any suggestions? the listview sees some hiccups when i'm scrolling first time, but at second time everything is smooth.
i posted a topic on Stackoverflow http://goo.gl/T46dQO
Thank you for your time! this is the best repository for Android ever!