ChatMsgViewAdapter.java

package com.sogouchat.ui;

import android.R.integer;
import android.content.Context;
import android.database.DataSetObserver;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import android.os.Environment;
import android.text.format.Time;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;

import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;

import com.sogouchat.R;
import com.sogouchat.SogouChatApp;
import com.sogouchat.bean.ContactNode;
import com.sogouchat.bean.DownNode;
import com.sogouchat.bean.MsgNode;
import com.sogouchat.bean.TelNode;
import com.sogouchat.os.ChatAppConstant;

public class ChatMsgViewAdapter extends BaseAdapter {
	
    static class ViewHolder { 
        public TextView mSendTime;
        public TextView mTextContent;
        public ImageView mImageContent;
    }
	
    private static final String TAG = ChatMsgViewAdapter.class.getSimpleName();
	public static interface IMsgViewType{
		int MSG_COME = 0;
		int MSG_TO = 1;
	}
	
	public static interface IMsgContentType{
		int MSG_TEXT = 0;
		int MSG_IMAGE = 1;
		int MSG_AUDIO = 2;
	}
	
	public List<ChatMsgEntity> mData = new ArrayList<ChatMsgEntity>();
    public ChatListActivity mCtx;
    private LayoutInflater mInflater;
    private SogouChatApp mApp;
    private String mTel;

    public ChatMsgViewAdapter(ChatListActivity context, SogouChatApp app) {
    	mCtx = context;
        mInflater = LayoutInflater.from(context);
        mApp = app;
    }
    
    public void setChatTel(String tel){
        mTel = tel;
        extraList();
        notifyDataSetChanged();
    }

	private void extraList() {
		mData.clear();
		mApp.mDownList.clear();
		Iterator<TelNode> telIt = mApp.mTelList.iterator();
		while (telIt.hasNext()) {
			TelNode telNode = telIt.next();
//			Log.i(TAG, "tel="+telNode.mLastBody+telNode.mName);
			if (telNode.mTel.equals(mTel)) {
				if (telNode.mMsgCnt > 0) {
					Iterator<MsgNode> msgIt = telNode.mMsgList.iterator();
					while (msgIt.hasNext()) {
						MsgNode msgNode = msgIt.next();
						ChatMsgEntity msgEn = new ChatMsgEntity(this, msgNode,
								telNode.mName);
						mData.add(msgEn);
						if (msgEn.mLoad == false
								&& msgEn.mType > IMsgContentType.MSG_TEXT) {
							DownNode downNode = new DownNode();
							downNode.mType = msgEn.mType;
							downNode.mDate = msgEn.mDate;
							downNode.mShortUrl = msgEn.mShortUrl;
							mApp.mDownList.add(downNode);
						}
					}
					mApp.syncDownList();
				}

			}
		}

	}
    
    public void updateNewMsgList(){
		Iterator<MsgNode> msgIt = mApp.mMsgList.iterator();
		while (msgIt.hasNext()) {
			MsgNode msgNode = msgIt.next();
			ChatMsgEntity msgEn = new ChatMsgEntity(msgNode, mTel);
			mData.add(msgEn);
		}
    }
    
    public int getCount() {
        return mData.size();
    }

    public Object getItem(int position) {
        return mData.get(position);
    }

    public long getItemId(int position) {
        return position;
    }
    
/* type 
    ALL    = 0; 
    INBOX  = 1; 
    SENT   = 2; 
    DRAFT  = 3; 
    OUTBOX = 4; 
    FAILED = 5; 
    QUEUED = 6; */
	public int getItemViewType(int position) {
		// TODO Auto-generated method stub
	 	ChatMsgEntity entity = mData.get(position);
	 	return entity.mCome;
	}
	public int getViewTypeCount() {
		// TODO Auto-generated method stub
		return 2;
	}
	public View getView(int position, View convertView, ViewGroup parent) {
		
		ChatMsgEntity entity = mData.get(position);
//		Log.i(TAG, "getView"+entity.mContent+"pos ="+position);
		ViewHolder viewHolder = null;
		if (convertView == null) {
			if (entity.mCome == IMsgViewType.MSG_COME) {
				convertView = mInflater.inflate(
						R.layout.item_chat_text_right, null);
			} 
			else if (entity.mCome == IMsgViewType.MSG_TO){
				convertView = mInflater.inflate(
						R.layout.item_chat_text_left, null);
			}
			viewHolder = new ViewHolder();
			viewHolder.mSendTime = (TextView) convertView.findViewById(R.id.tv_sendtime);
			viewHolder.mTextContent = (TextView) convertView.findViewById(R.id.tv_chatcontent);
			viewHolder.mImageContent = (ImageView) convertView.findViewById(R.id.img_chatcontent);
			convertView.setTag(viewHolder);
		} else {
			viewHolder = (ViewHolder) convertView.getTag();
		}
		viewHolder.mTextContent.setText(entity.mContent);
		viewHolder.mSendTime.setText(formatTimes(entity.mDate));
		
		if (entity.mType ==  IMsgContentType.MSG_IMAGE) {
			viewHolder.mTextContent.setVisibility(View.INVISIBLE);
			viewHolder.mImageContent.setVisibility(View.VISIBLE);
			
//			if (!entity.mLoad)
			{
				String filePath = Environment.getExternalStorageDirectory() + ChatAppConstant.SAVE_PATH
						+ entity.mDate+".png";
				File file = new File(filePath);
				if (file.exists()){
					// load imge
					Bitmap bitmap = getLoacalBitmap(file);
					viewHolder.mImageContent.setImageBitmap(bitmap);
					entity.mLoad = true;
				}
				else{
//					Log.i(TAG, "set horse"+entity.mContent);
					viewHolder.mImageContent.setImageResource(R.drawable.horse1);
					entity.mLoad = false;
				}
			}

		}
		else if (entity.mType ==  IMsgContentType.MSG_AUDIO){
			viewHolder.mTextContent.setVisibility(View.INVISIBLE);
			viewHolder.mImageContent.setVisibility(View.VISIBLE);
			if (entity.mCome == IMsgViewType.MSG_COME) {
//				Log.i(TAG, "set audio"+entity.mContent);
				viewHolder.mImageContent.setImageResource(R.drawable.chathistory_send_voice_spk_04);
			} 
			else if (entity.mCome == IMsgViewType.MSG_TO){
//				Log.i(TAG, "set audio"+entity.mContent);
				viewHolder.mImageContent.setImageResource(R.drawable.chathistory_receive_voice_spk_04);
			}
			
			if (!entity.mLoad){
				String filePath = Environment.getExternalStorageDirectory() + ChatAppConstant.SAVE_PATH
						+ entity.mDate+".mp3";
				File file = new File(filePath);
				if (file.exists()){
					entity.mLoad = true;
				}
				else{
					viewHolder.mImageContent.setImageResource(R.drawable.msg_audio_down);
				}
			}
		}
		else
		{
			viewHolder.mTextContent.setVisibility(View.VISIBLE);
			viewHolder.mImageContent.setVisibility(View.INVISIBLE);
		}
		return convertView;
	}
	
	public static Bitmap getLoacalBitmap(File file) {
        try {
             FileInputStream fis = new FileInputStream(file);
             return BitmapFactory.decodeStream(fis);  ///把流转化为Bitmap图片        

          } catch (FileNotFoundException e) {
             e.printStackTrace();
             return null;
        }
   }
	
	private String formatTimes(long time) {
		String dateFormat = "";
		if (isSameDay(time)){
			dateFormat = "今天 h:mmaa";
		}
		else {
			dateFormat = "MM/dd h:mmaa";
		}
		SimpleDateFormat format1 = new SimpleDateFormat(dateFormat);
		Date currentTime = new Date(time);
		return format1.format(currentTime);
	}
	
	public static boolean isSameDay(long date) {
	    Time time = new Time();
	    time.setToNow();
	    int dayNow = Time.getJulianDay(time.normalize(true), 0);
	    int day = Time.getJulianDay(date, 0);
	    return dayNow == day;
	}
}