package com.cnblogs.android;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AbsListView.OnScrollListener;
import android.widget.AdapterView.OnItemClickListener;
import com.cnblogs.android.adapter.NewsListAdapter;
import com.cnblogs.android.controls.PullToRefreshListView;
import com.cnblogs.android.controls.PullToRefreshListView.OnRefreshListener;
import com.cnblogs.android.core.Config;
import com.cnblogs.android.core.NewsHelper;
import com.cnblogs.android.dal.NewsDBHelp;
import com.cnblogs.android.entity.News;
import com.cnblogs.android.utility.NetHelper;
/**
* �༭�Ƽ�����
* @author walkingp
* @date:2012-3
*
*/
public class NewsRecommendActivity extends SuperView {
List<News> listNews = new ArrayList<News>();
NewsListAdapter adapter;
int pageIndex = 1;// ҳ��
ListView listView;
TextView txtAppTitle;
private ImageButton refresh_btn; // ͷ��ˢ�°�ť
ProgressBar news_progress_bar; // ͷ�����ذ�ť
ProgressBar newsBody_progressBar;// �������
Button btnBack;
LinearLayout viewFooter;// footer view
TextView tvFooterMore;// �ײ�������ʾ
ProgressBar list_footer_progress;// �ײ�������
private int lastItem;
static final int MENU_DETAIL = Menu.FIRST;// �鿴��ϸ
static final int MENU_COMMENT = Menu.FIRST + 1;// �鿴����
static final int MENU_VIEW_BROWSER = Menu.FIRST + 2;// ��������в鿴
static final int MENU_SHARE_TO = Menu.FIRST + 3;// ����
Resources res;// ��Դ
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.author_order_recommend_news_layout);
res = this.getResources();
InitialControls();
InitialNewsList();
BindEvent();
}
/**
* ��ʼ���б�
*/
private void InitialControls() {
txtAppTitle=(TextView)findViewById(R.id.txtAppTitle);
txtAppTitle.setText("�Ƽ�����");
btnBack=(Button)findViewById(R.id.btn_back);
btnBack.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
finish();
}
});
listView = (ListView) findViewById(R.id.blog_list);
listView.removeAllViewsInLayout();
newsBody_progressBar = (ProgressBar) findViewById(R.id.blogList_progressBar);
newsBody_progressBar.setVisibility(View.VISIBLE);
// ˢ��
refresh_btn = (ImageButton) findViewById(R.id.blog_refresh_btn);
news_progress_bar = (ProgressBar) findViewById(R.id.blog_progressBar);
// �ײ�view
LayoutInflater mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
viewFooter = (LinearLayout) mInflater.inflate(R.layout.listview_footer,
null, false);
}
/**
* ���س�ʼ����(��ʼ��)
*/
private void InitialNewsList() {
new PageTask(0, true).execute();
}
/**
* ���¼�
*/
private void BindEvent() {
// ˢ��
refresh_btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
new PageTask(1, true).execute();
}
});
// ����ˢ��
((PullToRefreshListView) listView)
.setOnRefreshListener(new OnRefreshListener() {
@Override
public void onRefresh() {
new PageTask(-1, true).execute();
}
});
// ����ˢ��
listView.setOnScrollListener(new OnScrollListener() {
/**
* ���������һ��
*/
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
if (lastItem == adapter.getCount()
&& scrollState == OnScrollListener.SCROLL_STATE_IDLE) {
pageIndex = pageIndex + 1;
new PageTask(pageIndex, false).execute();
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
lastItem = firstVisibleItem - 2 + visibleItemCount;
}
});
// �����ת
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
RedirectDetailActivity(v);
}
});
}
/**
* ���߳������������������ء���ʼ�������ؼ��ء�ˢ�£�
*
*/
public class PageTask extends AsyncTask<String, Integer, List<News>> {
boolean isRefresh = false;
int curPageIndex = 0;
boolean isLocalData = false;// �Ƿ��Ǵӱ��ض�ȡ������
NewsDBHelp dbHelper = new NewsDBHelp(getApplicationContext());
public PageTask(int page, boolean isRefresh) {
curPageIndex = page;
this.isRefresh = isRefresh;
}
protected List<News> doInBackground(String... params) {
boolean isNetworkAvailable = NetHelper.networkIsAvailable(getApplicationContext());
int _pageIndex = curPageIndex;
if (_pageIndex <= 0) {
_pageIndex = 1;
}
if (isNetworkAvailable) {// ���������
List<News> listNewsNew = NewsHelper.GetRecommendNewsList(_pageIndex);
switch (curPageIndex) {
case -1 :// ����\
List<News> listTmp = new ArrayList<News>();
if (listNews != null && listNews.size() > 0) {
if (listNewsNew != null && listNewsNew.size() > 0) {
int size = listNewsNew.size();
for (int i = 0; i < size; i++) {
if (!listNews.contains(listNewsNew.get(i))) {// ��������ظ�
listTmp.add(listNewsNew.get(i));
}
}
}
}
return listTmp;
case 0 :// �״μ���
case 1 :// ˢ��
if (listNewsNew != null && listNewsNew.size() > 0) {
return listNewsNew;
}
break;
default :// ����
List<News> listT = new ArrayList<News>();
if (listNews != null && listNews.size() > 0) {// ������ҳ������ʱ
if (listNewsNew != null && listNewsNew.size() > 0) {
int size = listNewsNew.size();
for (int i = 0; i < size; i++) {
if (!listNews.contains(listNewsNew.get(i))) {// ��������ظ�
listT.add(listNewsNew.get(i));
}
}
}
}
return listT;
}
}
return null;
}
@Override
protected void onCancelled() {
super.onCancelled();
}
/**
* ��������
*/
@Override
protected void onPostExecute(List<News> result) {
// ���Ͻ�
news_progress_bar.setVisibility(View.GONE);
refresh_btn.setVisibility(View.VISIBLE);
// ���粻���ò��ұ���û�б�������
if (result == null || result.size() == 0) {// û��������
((PullToRefreshListView) listView).onRefreshComplete();
if (!NetHelper.networkIsAvailable(getApplicationContext()) && curPageIndex > 1) {// ��������û������
Toast.makeText(getApplicationContext(),R.string.sys_network_error, Toast.LENGTH_SHORT)
.show();
// listView.removeFooterView(viewFooter);
}
return;
}
int size = result.size();
if (size >= Config.BLOG_PAGE_SIZE
&& listView.getFooterViewsCount() == 0) {
listView.addFooterView(viewFooter);
}
// ���浽���ݿ�
if (!isLocalData) {
dbHelper.SynchronyData2DB(result);
}
if (curPageIndex == -1) {// ����ˢ��
adapter.InsertData(result);
} else if (curPageIndex == 0) {// �״μ���
listNews = result;
newsBody_progressBar.setVisibility(View.GONE);
adapter = new NewsListAdapter(getApplicationContext(), listNews);
listView.setAdapter(adapter);
// ���ݲ���
((PullToRefreshListView) listView).SetDataRow(listNews.size());
((PullToRefreshListView) listView)
.SetPageSize(Config.NEWS_PAGE_SIZE);
} else if (curPageIndex == 1) {// ˢ��
if (adapter != null && adapter.GetData() != null) {
adapter.GetData().clear();
adapter.AddMoreData(result);
} else {
adapter = new NewsListAdapter(getApplicationContext(),
listNews);
listView.setAdapter(adapter);
}
newsBody_progressBar.setVisibility(View.GONE);
} else {// ����
adapter.AddMoreData(result);
}
if (isRefresh) {// ˢ��ʱ����
((PullToRefreshListView) listView).onRefreshComplete();
}
}
@Override
protected void onPreExecute() {
// ���������
if (listView.getCount() == 0) {
newsBody_progressBar.setVisibility(View.VISIBLE);
}
// ���Ͻ�
news_progress_bar.setVisibility(View.VISIBLE);
refresh_btn.setVisibility(View.GONE);
if (!isRefresh) {// �ײ��ؼ���ˢ��ʱ��������
TextView tvFooterMore = (TextView) findViewById(R.id.tvFooterMore);
tvFooterMore.setText(R.string.pull_to_refresh_refreshing_label);
tvFooterMore.setVisibility(View.VISIBLE);
ProgressBar list_footer_progress = (ProgressBar) findViewById(R.id.list_footer_progress);
list_footer_progress.setVisibility(View.VISIBLE);
}
}
@Override
protected void onProgressUpdate(Integer... values) {
}
}
/**
* �鿴����
*
* @param v
*/
private void RedirectDetailActivity(View v) {
Intent intent = new Intent();
try {
// ���ݲ���
intent.setClass(NewsRecommendActivity.this, NewsDetailActivity.class);
Bundle bundle = new Bundle();
TextView tvNewsId = (TextView) (v.findViewById(R.id.news_text_id));
TextView tvNewsTitle = (TextView) (v
.findViewById(R.id.news_text_title));
TextView tvNewsDate = (TextView) (v
.findViewById(R.id.news_text_date));
TextView tvNewsUrl = (TextView) (v.findViewById(R.id.news_text_url));
TextView tvNewsComment = (TextView) (v
.findViewById(R.id.news_text_comments));
TextView tvNewsView = (TextView) (v
.findViewById(R.id.news_text_view));
String newsId = tvNewsId.getText().toString();
String newsTitle = tvNewsTitle.getText().toString();
String newsDate = tvNewsDate.getText().toString();
String newsUrl = tvNewsUrl.getText().toString();
int view = Integer.parseInt(tvNewsView.getText().toString());
int comment = Integer.parseInt(tvNewsComment.getText().toString());
bundle.putString("newsId", newsId);
bundle.putString("newsTitle", newsTitle);
bundle.putString("date", newsDate);
bundle.putString("newsUrl", newsUrl);
bundle.putInt("view", view);
bundle.putInt("comment", comment);
Log.d("newsId", newsId.toString());
intent.putExtras(bundle);
startActivityForResult(intent, 0);
tvNewsTitle.setTextColor(R.color.gray);
} catch (Exception ex) {
ex.printStackTrace();
}
}
}