MailAdapter.java

package com.geo.smallcredit.adapter;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.geo.smallcredit.R;
import com.geo.smallcredit.listviewgroup.interfaces.ItemClickedListener;
import com.geo.smallcredit.listviewgroup.interfaces.ItemHeaderClickedListener;
import com.geo.smallcredit.vo.Group;
import com.geo.smallcredit.vo.Messg;

public class MailAdapter extends BaseAdapter implements
		StickyListHeadersAdapter {

	private List<Messg> mMessageList;
	private List<Group> mMessageListGroup;

	private ItemClickedListener mItemClickedListener;
	private ItemHeaderClickedListener mItemHeaderClickedListener;

	private Context context;

	private boolean mIsOpen;// 初始化View时分组是否展开

	public MailAdapter(Context context, List<Messg> message_list, boolean isOpen) {
		this.context = context;
		this.mMessageList = message_list;
		this.mIsOpen = isOpen;
		initMessageList(message_list);
	}

	private void initMessageList(List<Messg> message_list) {
		this.mMessageList = message_list;
		if (message_list != null && message_list.size() > 0) {
			getSectionIndicesAndGroupNames();
		}
	}

	@Override
	public int getCount() {
		return mMessageList == null ? 0 : mMessageList.size();
	}

	public int getRealCount() {
		return mMessageList == null ? 0 : mMessageList.size();
	}

	@Override
	public Object getItem(int position) {
		return mMessageList.get(position);
	}

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

	@Override
	public View getView(final int position, View convertView, ViewGroup parent) {
		ItemViewHolder holder;

		if (convertView == null) {
			holder = new ItemViewHolder();
			convertView = LayoutInflater.from(context).inflate(
					R.layout.view_item, null);
			holder.textViewInfo = (ImageView) convertView
					.findViewById(R.id.text_item_content_info);
			holder.textViewInfo2 = (ImageView) convertView
					.findViewById(R.id.text_item_content_info2);

			convertView.setTag(holder);
		} else {
			holder = (ItemViewHolder) convertView.getTag();
		}
		holder.textViewInfo.setBackgroundResource(R.drawable.jia);

		// 若合起分组，则里面的view不显示
		holder.textViewInfo
				.setVisibility(mMessageListGroup.get(
						mMessageList.get(position).getGroupId()).isShown() ? View.VISIBLE
						: View.GONE);
		holder.textViewInfo2
				.setVisibility(mMessageListGroup.get(
						mMessageList.get(position).getGroupId()).isShown() ? View.VISIBLE
						: View.GONE);
		convertView.setOnClickListener(new View.OnClickListener() {

			@Override
			public void onClick(View v) {
				if (mItemClickedListener != null) {
					mItemClickedListener.onItemClick(v, position);
				}

			}
		});

		return convertView;
	}

	/**
	 * 分组
	 */
	private void getSectionIndicesAndGroupNames() {
		mMessageListGroup = new ArrayList<Group>();
		Group gp;
		int countGp = 0;
		String groupName = "";
		for (int i = 0; i < mMessageList.size(); i++) {
			String groupName2 = mMessageList.get(i).getGroupName();
			if (!groupName2.equals(groupName)) {

				if (mMessageListGroup.size() > 0) {
					mMessageListGroup.get(mMessageListGroup.size() - 1)
							.setCount(countGp);
				}
				groupName = groupName2;
				countGp = 1;
				mMessageList.get(i).setGroupId(mMessageListGroup.size());
				gp = new Group();
				gp.setName(groupName);
				gp.setFirstPositionInList(i);
				gp.setShown(mIsOpen);
				mMessageListGroup.add(gp);
			} else {
				countGp++;
				mMessageList.get(i).setGroupId(mMessageListGroup.size() - 1);
			}

		}

	}

	@Override
	public View getHeaderView(final int position, View convertView,
			ViewGroup parent) {

		ItemHeaderViewHolder holder = null;
		if (convertView == null) {
			holder = new ItemHeaderViewHolder();
			convertView = LayoutInflater.from(context).inflate(
					R.layout.view_item_header, parent, false);
			holder.textViewGroupName = (TextView) convertView
					.findViewById(R.id.text_item_header_name);
			holder.imgArrow = (ImageView) convertView
					.findViewById(R.id.img_item_header);
			convertView.setTag(holder);
		} else {
			holder = (ItemHeaderViewHolder) convertView.getTag();
		}

		Group gp = mMessageListGroup.get(mMessageList.get(position)
				.getGroupId());
		holder.textViewGroupName.setText(gp.getName());

		if (gp.isShown()) {
			holder.imgArrow.setImageResource(R.drawable.down);
		} else {
			holder.imgArrow.setImageResource(R.drawable.enter_arrow);
		}

		return convertView;
	}

	@Override
	public long getHeaderId(int position) {
		return mMessageList.get(position).getGroupId();
	}

	/**
	 * 当点击header时，即GroupName，可以展开合起
	 */
	public void onListHeaderClicked(int position) {
		Group gp = mMessageListGroup.get(mMessageList.get(position)
				.getGroupId());
		gp.setShown(!gp.isShown());

		MailAdapter.this.notifyDataSetChanged();
	}

	public void setOnItemClickedListener(ItemClickedListener listener) {
		this.mItemClickedListener = listener;
	}

	public void setOnItemHeaderClickedListener(
			ItemHeaderClickedListener listener) {
		this.mItemHeaderClickedListener = listener;
	}

	public ItemHeaderClickedListener getmItemHeaderClickedListener() {
		return mItemHeaderClickedListener;
	}

	public class ItemHeaderViewHolder {

		TextView textViewGroupName;
		ImageView imgArrow;
	}

	public class ItemViewHolder {

		ImageView textViewInfo, textViewInfo2;
	}

}