ActionSlideExpandableListView.java

package com.marshalchen.common.uimodule.slideExpand;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;

/**
 * A more specific expandable listview in which the expandable area
 * consist of some buttons which are context actions for the item itself.
 *
 * It handles event binding for those buttons and allow for adding
 * a listener that will be invoked if one of those buttons are pressed.
 *
 * @author tjerk
 * @date 6/26/12 7:01 PM
 */
public class ActionSlideExpandableListView extends SlideExpandableListView {
	private OnActionClickListener listener;
	private int[] buttonIds = null;

	public ActionSlideExpandableListView(Context context) {
		super(context);
	}

	public ActionSlideExpandableListView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public ActionSlideExpandableListView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	public void setItemActionListener(OnActionClickListener listener, int ... buttonIds) {
		this.listener = listener;
		this.buttonIds = buttonIds;
	}

	/**
	 * Interface for callback to be invoked whenever an action is clicked in
	 * the expandle area of the list item.
	 */
	public interface OnActionClickListener {
		/**
		 * Called when an action item is clicked.
		 *
		 * @param itemView the view of the list item
		 * @param clickedView the view clicked
		 * @param position the position in the listview
		 */
		public void onClick(View itemView, View clickedView, int position);
	}

	public void setAdapter(ListAdapter adapter) {
		super.setAdapter(new WrapperListAdapterImpl(adapter) {

			@Override
			public View getView(final int position, View view, ViewGroup viewGroup) {
				final View listView = wrapped.getView(position, view, viewGroup);
				// add the action listeners
				if(buttonIds != null && listView!=null) {
					for(int id : buttonIds) {
						View buttonView = listView.findViewById(id);
						if(buttonView!=null) {
							buttonView.findViewById(id).setOnClickListener(new View.OnClickListener() {
								@Override
								public void onClick(View view) {
									if(listener!=null) {
										listener.onClick(listView, view, position);
									}
								}
							});
						}
					}
				}
				return listView;
			}
		});
	}
}