Android Open Source - android-tutorials-custom-selectable-listview Item List Adapter

• Back to UI ListView/Tutorial  ↑

From Project

Back to project page android-tutorials-custom-selectable-listview.

License

The source code is released under:

Apache License

Java Source Code

/**
 * /* ww  w.  j  a  v  a2  s  . c  o  m*/
 */
package fr.marvinlabs.selectablelisttutorial;

import java.util.List;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import fr.marvinlabs.selectablelisttutorial.pojo.Item;
import fr.marvinlabs.widget.CheckableRelativeLayout;

/**
 * Adapter that allows us to render a list of items
 * 
 * @author marvinlabs
 */
public class ItemListAdapter extends ArrayAdapter<Item> {

  /**
   * Constructor from a list of items
   */
  public ItemListAdapter(Context context, List<Item> items) {
    super(context, 0, items);
    li = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    // The item we want to get the view for
    // --
    final Item item = getItem(position);

    // Re-use the view if possible
    // --
    ViewHolder holder;
    if (convertView == null) {
      convertView = li.inflate(R.layout.item, null);
      holder = new ViewHolder(convertView);
      convertView.setTag(R.id.holder, holder);
    } else {
      holder = (ViewHolder) convertView.getTag(R.id.holder);
    }

    // Set some view properties
    holder.id.setText("#" + item.getId());
    holder.caption.setText(item.getCaption());

    // Restore the checked state properly
    final ListView lv = (ListView) parent;
    holder.layout.setChecked(lv.isItemChecked(position));

    return convertView;
  }

  @Override
  public long getItemId(int position) {
    return getItem(position).getId();
  }

  @Override
  public boolean hasStableIds() {
    return true;
  }

  private LayoutInflater li;

  private static class ViewHolder {
    public ViewHolder(View root) {
      id = (TextView) root.findViewById(R.id.itemId);
      caption = (TextView) root.findViewById(R.id.itemCaption);
      layout = (CheckableRelativeLayout) root.findViewById(R.id.layout);
    }

    public TextView id;
    public TextView caption;
    public CheckableRelativeLayout layout;
  }
}

Java Source Code List

• Back to UI ListView/Tutorial  ↑