MyCollectFragment.java

package com.itap.voiceemoticon.activity.fragment;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

import org.tadpoleframework.widget.PageListView;
import org.tadpoleframework.widget.adapter.AdapterCallback;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.LinearLayout.LayoutParams;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.itap.voiceemoticon.R;
import com.itap.voiceemoticon.VEApplication;
import com.itap.voiceemoticon.activity.INotify;
import com.itap.voiceemoticon.activity.MainActivity;
import com.itap.voiceemoticon.activity.Notification;
import com.itap.voiceemoticon.activity.NotificationCenter;
import com.itap.voiceemoticon.activity.NotificationID;
import com.itap.voiceemoticon.adapter.ArrayListAdapter;
import com.itap.voiceemoticon.adapter.MyCollectAdapter;
import com.itap.voiceemoticon.adapter.VoiceAdapter;
import com.itap.voiceemoticon.api.PageList;
import com.itap.voiceemoticon.api.Voice;
import com.itap.voiceemoticon.db.DaoFactory;
import com.itap.voiceemoticon.profit.GoogleAdmob;
import com.itap.voiceemoticon.widget.SegmentBar;

/**
 * <br>==========================
 * <br> author：Zenip
 * <br> email：lxyczh@gmail.com
 * <br> create：2013-1-31
 * <br>==========================
 */
public class MyCollectFragment extends BaseFragment implements INotify, AdapterCallback<Voice>{
    private static final int HANDLER_FILL_LIST = 1;

    private PageListView<Voice> mListView;
    private SegmentBar mSegmentBar;
    private MyCollectAdapter mVoiceAdapter;
    private MainActivity mActivity;

    public MyCollectFragment(MainActivity activity) {
        
        mActivity = activity;
    }

    public void reloadData() {
        if (mVoiceAdapter != null) {
            this.loadData();
        }
    }

    public View onCreateView(LayoutInflater inflater) {
    	NotificationCenter.getInstance().register(this, NotificationID.N_MY_COLLECT_CHANGE);
    	NotificationCenter.getInstance().register(this, NotificationID.N_VOICE_DELETE);
    	
    	LinearLayout layout = GoogleAdmob.createLayoutWithAd(mActivity);
    	
        View view = inflater.inflate(R.layout.tab_my_collect, null);
        mListView = (PageListView) view.findViewById(R.id.list_view_my_collect);
        mSegmentBar = (SegmentBar) view.findViewById(R.id.side_bar_my_collect);
        mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int pos, long arg3) {
            	pos = pos - 1;
            	
                Log.d(VEApplication.TAG, "HotVoice Fragment onItemClick ");
                Voice item = (Voice) mVoiceAdapter.getItem(pos);
                VEApplication.getMusicPlayer(mActivity).playMusic(item.url, item.title);
            }
        });


        mVoiceAdapter = new MyCollectAdapter(mActivity);
        mVoiceAdapter.setListView(mListView.getRefreshableView());

        mListView.setOnScrollListener(mVoiceAdapter);
        mListView.setAdapter(mVoiceAdapter);
        mListView.setMode(Mode.DISABLED);
        
        mSegmentBar.setListView(mListView.getRefreshableView());

        mVoiceAdapter.setOnSectionChangeListener(new MyCollectAdapter.OnSectionChangeListener() {
            @Override
            public void handle(char letter) {
                mSegmentBar.setCurrentSection(letter);
            }
        });
        mVoiceAdapter.setCallback(this);

        loadData();
        
        view.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
        layout.addView(view);
        return layout;
    }

    /**
     * comparator that use the first letter ofr Chinese pinyin
     */
    private Comparator<Voice> myCollectCommparator = new Comparator<Voice>() {
        @Override
        public int compare(Voice lhs, Voice rhs) {
            //            System.out.println("lhs fl = " + lhs.getFirstLetter() + ", rhs fl = " + rhs.getFirstLetter());
            if (lhs.getFirstLetter().equals("?")) {
                return 1;
            }

            if (rhs.getFirstLetter().equals("?")) {
                return -1;
            }

            return lhs.getFirstLetter().compareTo(rhs.getFirstLetter());
        }

    };


    private Handler mHandler = new Handler(new Handler.Callback() {
        @Override
        public boolean handleMessage(Message msg) {
            switch (msg.what) {
            case HANDLER_FILL_LIST:
                PageList<Voice> pageList = (PageList<Voice>) msg.obj;
                if (pageList != null) {
                    Collections.sort(pageList.records, myCollectCommparator);
                    mVoiceAdapter.setList(pageList.records);
                    mVoiceAdapter.notifyDataSetChanged();
                }
                break;
            default:
                break;
            }
            return false;
        }
    });
    
    

    private void loadData() {
        new Thread(new Runnable() {
            @Override
            public void run() {
                Message message = Message.obtain();
                message.what = HANDLER_FILL_LIST;

                ArrayList<Voice> voiceList = DaoFactory.getInstance(mActivity).getVoiceDao().allVoices();
                PageList<Voice> pageList = new PageList<Voice>();
                pageList.records = voiceList;
                pageList.totalCount = voiceList.size();

                message.obj = pageList;
                mHandler.sendMessage(message);
            }
        }).start();
    }

	@Override
	public void notify(Notification notification) {
		if (NotificationID.N_MY_COLLECT_CHANGE == notification.id) {
			if (null != mVoiceAdapter) {
				mVoiceAdapter.notifyDataSetChanged();
			}
		}
		
		if (NotificationID.N_VOICE_DELETE == notification.id) {
		    if (null !=  mVoiceAdapter) {
		        Voice voice = (Voice)notification.extObj;
		        mVoiceAdapter.removeItem(voice);
		        mVoiceAdapter.notifyDataSetChanged();
		    }
		}
	}

    @Override
    public void onCommand(View view, Voice obj, int command, int position) {
        if (VoiceAdapter.CMD_DELETE == command) {
            showDeleteDialog(obj);
            return;
        }
        mActivity.onCommand(view, obj, command, position);
    }
    
    public void showDeleteDialog(final Voice voice) {
        AlertDialog.Builder ab = new AlertDialog.Builder(mActivity);
        ab.setTitle("确定要删除?");
        ab.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                voice.delete(mActivity);
                VEApplication.reloadVoiceCollectedCache(mActivity);
            }
        });
        ab.setNegativeButton("取消", null);
        ab.show();
    }   
}