IT资讯-------------显示抓取的文章

各个

该App已经上传到百度应用市场：http://shouji.baidu.com/soft/item?docid=8928185&from=as&f=search_app_it%E8%B5%84%E8%AE%AF%40list_1_image%402%40header_all_input

有兴趣的可以下载看看。接下来我会公布源代码，不过该App并没有使用代码混淆，所以可以通过反编译清楚的看到源码。

Github地址   :https://github.com/linhaosheng/CSDN

以下是  MainActivity的源码

public class MainActivity extends BaseActivityImpl implements View.OnClickListener{
private TabPageIndicator tabPageIndicator;
private ViewPager mViewPage;
private FragmentPagerAdapter mAdapter;
private int select = 0;

private CTOActivity cto=null;
private CSDNActivity csdn=null;
private BlogHouseActivity blog=null;
private ITEYEActivity iteye=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle bundle = getIntent().getBundleExtra("IT_select");
int select_Num = bundle.getInt("select");
select = select_Num;
switch (select) {
case 1:
setContentView(R.layout.csdnmain);
csdn=new CSDNActivity(this,MainActivity.this);
csdn.initTabLine();
initCSDN();
csdn.setViewPage(mViewPage);
csdn.initViewPage();
csdn.setOnClickListener(this);
csdn.textListener();
getCSDNApplication().addActivity(this);
break;
case 2:
setContentView(R.layout.ctomain);
cto=new CTOActivity(this,MainActivity.this);
cto.initTabLine();
init_51CTO();
cto.setViewPage(mViewPage);
cto.initViewPage();
cto.setOnClickListener(this);
cto.textListener();
getCSDNApplication().addActivity(this);
break;
case 3:
setContentView(R.layout.bloghousemain);
blog=new BlogHouseActivity(this,MainActivity.this);
blog.initTabLine();
init_BLOG_HOUSE();
blog.setViewPage(mViewPage);
blog.initViewPage();
blog.setOnClickListener(this);
blog.textListener();
getCSDNApplication().addActivity(this);
break;
case 4:
setContentView(R.layout.iteyemain);
iteye=new ITEYEActivity(this,MainActivity.this);
iteye.initTabLine();
init_ITEYE();
iteye.setViewPage(mViewPage);
iteye.initViewPage();
iteye.setOnClickListener(this);
iteye.textListener();
getCSDNApplication().addActivity(this);
break;
}

}

@Override
public void onClick(View v) {
switch (select){
case 1:
csdn.csdnClick(v);
break;
case 2:
cto.ctoClick(v);
break;
case 3:
blog.blogClick(v);
break;
case 4:
iteye.iteyeClick(v);
break;
}

}

/**
* 初始化CSDN
*/
public void initCSDN() {
tabPageIndicator = (TabPageIndicator) findViewById(R.id.id_indicator);
mViewPage = (ViewPager) findViewById(R.id.id_pager);
Resources res = getResources();
String[] array = res.getStringArray(R.array.csdn);
mAdapter = new TabAdapter(getSupportFragmentManager(), array, select);
mViewPage.setAdapter(mAdapter);
tabPageIndicator.setViewPager(mViewPage, 0);
}

/**
* 初始化51CTO博客
*/
public void init_51CTO() {
tabPageIndicator = (TabPageIndicator) findViewById(R.id.id_indicator);
mViewPage = (ViewPager) findViewById(R.id.id_pager);
Resources res = getResources();
String[] array = res.getStringArray(R.array.cto);
mAdapter = new TabAdapter(getSupportFragmentManager(), array, select);
mViewPage.setAdapter(mAdapter);
tabPageIndicator.setViewPager(mViewPage, 0);
}

/**
* 初始化博客园
*/
public void init_BLOG_HOUSE() {
tabPageIndicator = (TabPageIndicator) findViewById(R.id.id_indicator);
mViewPage = (ViewPager) findViewById(R.id.id_pager);
Resources res = getResources();
String[] array = res.getStringArray(R.array.blog_house);
mAdapter = new TabAdapter(getSupportFragmentManager(), array, select);
mViewPage.setAdapter(mAdapter);
tabPageIndicator.setViewPager(mViewPage, 0);
}

/**
* 初始化ITEYE博客
*/
public void init_ITEYE() {
tabPageIndicator = (TabPageIndicator) findViewById(R.id.id_indicator);
mViewPage = (ViewPager) findViewById(R.id.id_pager);
Resources res = getResources();
String[] array = res.getStringArray(R.array.iteye);
mAdapter = new TabAdapter(getSupportFragmentManager(), array, select);
mViewPage.setAdapter(mAdapter);
tabPageIndicator.setViewPager(mViewPage, 0);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
Intent intent=new Intent(this,SelectActivity.class);
startActivity(intent);
return true;
} else {
return super.onKeyDown(keyCode, event);
}
}

主要是MainFragment的源码：

public class MainFragment extends Fragment implements IXListViewRefreshListener, IXListViewLoadMore {

private static final int LOAD_MORE = 0x110;
private static final int LOAD_REFREASH = 0x111;

private static final int TIP_ERROR_NO_NETWORK = 0x112;
private static final int TIP_ERROR_SERVER = 0x113;

//是否是第一次进入
private boolean isFirstIn = true;
//是否连接网络
private boolean isConnNet = false;

//选择是选择哪个博客  1：CSDN  2：51CTO   3：博客园    4：ITEYE博客
private int select;
//选择的是博客的哪个
private int selectType;
/**
* 当前数据是否从网络获取
*/
private boolean isLoadingDataFromNetwork=true;
//取CSDN数据
private int newTypes = Constant.NEW_TYPE_YEJIE;
//取51CTO数据
private int newTypes_cto = Constant.NEWS_TYPE_NETWORK;
//取博客园数据
private int newTypes_blog_house = Constant.NEWS_TYPE_HOME;
//取ITeye数据
private int newTypes_iteye = Constant.NEWS_TYPE_NEW;
private int currentPage = 1;
//CSDN
private NewsItemBiz newsItemBiz;
//51CTO
private NewItem51CTO newItem51CTO;
//博客园
private NewItemBlogHouse blogHouse;
//ITeye
private NewItemITeye iTeye;
private me.maxwin.view.XListView mXlistView;
private NewsItemAdapter mAdapter;
private List<NewsItem> mDatas = new ArrayList<NewsItem>();
/**
* 与数据库交互
*/
private NewsItemDao newsItemDao;

public MainFragment() {
}

public MainFragment(int newsType, int select) {
this.newTypes = newsType;
this.newTypes_cto = newsType + 5;
this.newTypes_blog_house = newsType + 9;
this.newTypes_iteye = newsType + 13;
this.select = select;
newsItemBiz = new NewsItemBiz();
newItem51CTO = new NewItem51CTO();
blogHouse = new NewItemBlogHouse();
iTeye = new NewItemITeye();
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.tab_item_fragment_main, container, false);
return view;
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
newsItemDao = new NewsItemDao(getContext());
mAdapter = new NewsItemAdapter(getActivity(), mDatas, select);
mAdapter.setSelectType(newTypes_iteye);
mXlistView = (me.maxwin.view.XListView) getView().findViewById(R.id.id_xlistView);
mXlistView.setAdapter(mAdapter);
mXlistView.setPullRefreshEnable(this);
mXlistView.setPullLoadEnable(this);
switch (select) {
case 1:
mXlistView.setRefreshTime(AppUtil.getRefreashTime(getActivity(), newTypes));
break;
case 2:
mXlistView.setRefreshTime(AppUtil.getRefreashTime(getActivity(), newTypes_cto));
break;
case 3:
mXlistView.setRefreshTime(AppUtil.getRefreashTime(getActivity(), newTypes_blog_house));
break;
case 4:
mXlistView.setRefreshTime(AppUtil.getRefreashTime(getActivity(), newTypes_iteye));
break;
}
// mXlistView.startRefresh();
mXlistView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
NewsItem newsItem = mDatas.get(position-1);
NewsItem nextItem=mDatas.get(position);
Intent intent=null;
if (newTypes_iteye==17){
intent = new Intent(getActivity(), SubjectsActivity.class);
intent.putExtra("url", newsItem.getLink());
}else {
intent = new Intent(getActivity(), NewsContentActivity.class);
intent.putExtra("url", newsItem.getLink());
intent.putExtra("nextUrl", nextItem.getLink());
intent.putExtra("select", select);
intent.putExtra("cuttenrPage", currentPage);
}
startActivity(intent);
}
});
if (isFirstIn) {
/**
* 进来时直接刷新
*/
mXlistView.startRefresh();
isFirstIn = false;
} else {
mXlistView.NotRefreshAtBegin();
}
}

@Override
public void onLoadMore() {
new LoadDatasTask().execute(LOAD_MORE);
}

@Override
public void onRefresh() {
new LoadDatasTask().execute(LOAD_REFREASH);
}

/**
* 记载数据的异步任
*
* @author
*/
class LoadDatasTask extends AsyncTask<Integer, Void, Integer> {
@Override
protected Integer doInBackground(Integer... params) {
switch (params[0]) {
case LOAD_MORE:
loadMoreData();
break;
case LOAD_REFREASH:
refreashData();
break;
}
return -1;
}

@Override
protected void onPostExecute(Integer result) {
switch (result) {
case TIP_ERROR_NO_NETWORK:
Toast.makeText(getActivity(), "没网络连接", Toast.LENGTH_SHORT).show();
mAdapter.notifyDataSetChanged();
mXlistView.stopRefresh();
break;
case TIP_ERROR_SERVER:
Toast.makeText(getActivity(), "服务器错误", Toast.LENGTH_SHORT).show();
break;
default:
break;
}
switch (select) {
case 1:
mXlistView.setRefreshTime(AppUtil.getRefreashTime(getActivity(), newTypes));
break;
case 2:
mXlistView.setRefreshTime(AppUtil.getRefreashTime(getActivity(), newTypes_cto));
break;
case 3:
mXlistView.setRefreshTime(AppUtil.getRefreashTime(getActivity(), newTypes_blog_house));
break;
case 4:
mXlistView.setRefreshTime(AppUtil.getRefreashTime(getActivity(), newTypes_iteye));
break;
}
mXlistView.stopRefresh();
mXlistView.stopLoadMore();
}
}

/**
* 刷新获取数据
*
* @return
*/
public Integer refreashData() {
if (NetUtil.checkNet(getActivity())) {
isConnNet = true;
List<NewsItem> newsItems = null;
try {
switch (select) {
case 1:
newsItems = newsItemBiz.getNewsItems(newTypes, currentPage);
List<NewsItem> newsItem1 = new ArrayList<>();
for (int i = 0; i <= newsItems.size() / 2; i++) {
newsItem1.add(newsItems.get(i));
}

mAdapter.setDatas(newsItem1);
mDatas=newsItem1;
isLoadingDataFromNetwork = true;
// 设置刷新时间
AppUtil.setRefreashTime(getActivity(), newTypes);
// 清除数据库数据
newsItemDao.deleteAll(newTypes,select);
// 存入数据库
newsItemDao.add(newsItems,select);
break;
case 2:
newsItems = newItem51CTO.getNewsItems(newTypes_cto, currentPage);
List<NewsItem> newsItem2 = new ArrayList<>();
for (int i = 0; i <= newsItems.size() / 2; i++) {
newsItem2.add(newsItems.get(i));
}
mAdapter.setDatas(newsItem2);
mDatas=newsItem2;
isLoadingDataFromNetwork = true;
// 设置刷新时间
AppUtil.setRefreashTime(getActivity(), newTypes_cto);
// 清除数据库数据
newsItemDao.deleteAll(newTypes_cto,select);
// 存入数据库
newsItemDao.add(newsItem2,select);
break;
case 3:
newsItems = blogHouse.getNewsItems(newTypes_blog_house, currentPage);
List<NewsItem> newsItem3 = new ArrayList<>();
for (int i = 0; i <= newsItems.size() / 2; i++) {
newsItem3.add(newsItems.get(i));
}
mAdapter.setDatas(newsItem3);
mDatas=newsItem3;
isLoadingDataFromNetwork = true;
// 设置刷新时间
AppUtil.setRefreashTime(getActivity(), newTypes_blog_house);
// 清除数据库数据
newsItemDao.deleteAll(newTypes_blog_house,select);
// 存入数据库
newsItemDao.add(newsItem3,select);
break;
case 4:
newsItems = iTeye.getNewsItems(newTypes_iteye, currentPage, newTypes_iteye);
List<NewsItem> newsItem4 = new ArrayList<>();
for (int i = 0; i <= newsItems.size() / 2; i++) {
newsItem4.add(newsItems.get(i));
}
mAdapter.setDatas(newsItem4);
mDatas=newsItem4;
isLoadingDataFromNetwork = true;
// 设置刷新时间
AppUtil.setRefreashTime(getActivity(), newTypes_iteye);
// 清除数据库数据
newsItemDao.deleteAll(newTypes_iteye,select);
// 存入数据库
newsItemDao.add(newsItem4,select);
break;
}
//  mDatas = newsItems;
} catch (Exception e) {
e.printStackTrace();
isLoadingDataFromNetwork = false;
return TIP_ERROR_SERVER;
}
} else {
isConnNet = false;
isLoadingDataFromNetwork = false;
List<NewsItem> newsItems = null;
switch (select) {
case 1:
//从数据库取数据
newsItems = newsItemDao.list(newTypes, currentPage,select);
break;
case 2:
newsItems = newsItemDao.list(newTypes_cto, currentPage,select);
break;
case 3:
newsItems = newsItemDao.list(newTypes_blog_house, currentPage,select);
break;
case 4:
newsItems = newsItemDao.list(newTypes_iteye, currentPage,select);
break;
}
mDatas = newsItems;
return TIP_ERROR_NO_NETWORK;
}
return -1;
}

/**
* 根据网络决定是从哪里取数据
*/
public void loadMoreData() {
System.out.println("isLoadingDataFromNetwork------" + isLoadingDataFromNetwork);
if (isLoadingDataFromNetwork) {
currentPage =currentPage+ 1;
List<NewsItem> newsItems = null;
try {
switch (select) {
case 1:
newsItems = newsItemBiz.getNewsItems(newTypes, currentPage);
break;
case 2:
newsItems = newItem51CTO.getNewsItems(newTypes_cto, currentPage);
break;
case 3:
newsItems = blogHouse.getNewsItems(newTypes_blog_house, currentPage);
break;
case 4:
newsItems = iTeye.getNewsItems(newTypes_iteye, currentPage,newTypes_iteye);
break;
}
newsItemDao.add(newsItems,select);
mAdapter.addAll(newsItems);
} catch (Exception e) {
e.printStackTrace();
}
} else {
// 从数据库加载的
currentPage += 1;
List<NewsItem> newsItems = null;
switch (select) {
case 1:
newsItems = newsItemDao.list(newTypes, currentPage,select);
break;
case 2:
newsItems = newsItemDao.list(newTypes_cto, currentPage,select);
break;
case 3:
newsItems = newsItemDao.list(newTypes_blog_house, currentPage,select);
break;
case 4:
newsItems = newsItemDao.list(newTypes_iteye, currentPage,select);
break;
}
if(newsItems!=null) {
mAdapter.addAll(newsItems);
}
}
}

对于Listview的每个Item的布局，这样的写法也很常见了，所以都不多说了，注意一点就行，这里对图片的加载用的是Github上的ImageLoader项目。

Frament的布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  

    xmlns:tools="http://schemas.android.com/tools"  

    android:layout_width="match_parent"  

    android:layout_height="match_parent" >  

  

    <me.maxwin.view.XListView  

        android:id="@+id/id_xlistView"  

        android:layout_width="match_parent"  

        android:layout_height="match_parent"  

        android:cacheColorHint="#00000000"  

        android:divider="@drawable/base_list_divider_drawable"  

        android:fadingEdge="none" >  

    </me.maxwin.view.XListView>  

  

</RelativeLayout>  

XlistView的Item的布局文件：

<?xml version="1.0" encoding="utf-8"?>  

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  

    android:layout_width="fill_parent"  

    android:layout_height="wrap_content"  

    android:orientation="vertical"  

    android:paddingLeft="16dp"  

    android:paddingRight="16dp"  

    android:paddingTop="8dp"  

    android:paddingBottom="8dp"  

    >  

    <TextView   

        android:id="@+id/id_title"  

        android:layout_width="match_parent"  

        android:layout_height="wrap_content"  

        android:layout_marginBottom="8dp"  

        android:textSize="18sp"  

        android:textColor="@color/black"  

        android:text="如何有效地在海外市场推广产品？"/>  

<LinearLayout   

    android:layout_width="fill_parent"  

    android:layout_height="wrap_content"  

    android:orientation="horizontal"  

    android:baselineAligned="true"  

    >  

<ImageView   

        android:id="@+id/id_newsImg"  

        android:src="@drawable/images"  

        android:layout_width="wrap_content"  

        android:layout_height="wrap_content"  

        android:layout_marginRight="8dp"  

        android:visibility="visible"/>  

    <LinearLayout  

        android:layout_width="0dp"  

        android:layout_height="fill_parent"  

        android:layout_gravity="center_vertical"  

        android:layout_weight="1"  

        android:gravity="center_vertical"  

        android:orientation="vertical" >  

          

        <LinearLayout  

            android:layout_width="fill_parent"  

            android:layout_height="0dp"  

            android:layout_weight="1"  

            android:gravity="top" >  

  

            <TextView  

                android:id="@+id/id_content"  

                android:layout_width="fill_parent"  

                android:layout_height="wrap_content"  

                android:gravity="top"  

                android:maxLines="2"  

                android:text="3D打印机一直以来只能进行单向操作，任务一旦开始便无法反悔。不过最近一批研究生研发了一种新型打印机，让你在打印的同时，可以修改重塑之前的设计。让我们一起来看看这个神奇的设备究竟是怎样的吧。"  

                android:textColor="@color/nomalGray"  

                android:textSize="14sp"  

                 />  

  

              

        </LinearLayout>  

  

        <LinearLayout  

            android:layout_width="fill_parent"  

            android:layout_height="wrap_content"  

            android:gravity="center_vertical" >  

  

            <TextView  

                android:id="@+id/id_date"  

                android:layout_width="0dp"  

                android:layout_height="wrap_content"  

                android:layout_weight="1"  

                android:gravity="center_vertical|right"  

                android:paddingTop="8dp"  

                android:singleLine="true"  

                android:text="13分钟前|11次阅读"  

                android:textSize="12sp"  

                android:textColor="@color/nomalGray" />  

  

            <TextView  

                android:id="@+id/id"  

                android:layout_width="0dp"  

                android:layout_height="wrap_content"  

                android:layout_weight="1"  

                android:paddingTop="16dp"  

                android:text="1"  

                android:gravity="right"  

                android:visibility="gone"  

                android:textColor="@color/nomalGray"  

                 />  

        </LinearLayout>  

    </LinearLayout>  

</LinearLayout>  

            <!-- <TextView  

                android:id="@+id/availableNum"  

                android:layout_width="wrap_content"  

                android:layout_height="wrap_content"  

                android:textColor="@color/nomalGray"  

                android:layout_alignParentBottom="true"  

                android:layout_alignParentRight="true"  

                android:background="@drawable/bg_mark_pressed"  

                android:text="可借：4"  

                android:textSize="13sp"  

                android:layout_marginLeft="2dp"  

                android:layout_marginRight="2dp"  

                android:layout_centerVertical="true"  

                 /> -->  

      

</LinearLayout>