Java 将listview添加到给定错误的片段
我正在尝试将自定义listview添加到扩展片段的类中。但它在4个地方给出了错误。代码如下: TopStoriesFragment.javaJava 将listview添加到给定错误的片段,java,android,android-fragments,android-listview,custom-adapter,Java,Android,Android Fragments,Android Listview,Custom Adapter,我正在尝试将自定义listview添加到扩展片段的类中。但它在4个地方给出了错误。代码如下: TopStoriesFragment.java public class TopStoriesFragment extends Fragment { public String thehindu = "http://www.thehindu.com/news/?service=rss"; public String toi = "http://timesofindia.feedspor
public class TopStoriesFragment extends Fragment {
public String thehindu = "http://www.thehindu.com/news/?service=rss";
public String toi = "http://timesofindia.feedsportal.com/c/33039/f/533965/index.rss";
public String reuters = "http://feeds.reuters.com/reuters/topNews";
public String deccanherald = "http://www.deccanherald.com/rss-internal/top-stories.rss";
public String currenturl = thehindu;
AlertDialog levelDialog;
public String fakingnews = "http://thepuntended.wordpress.com/";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_top_rated, container, false);
feedTitle = (TextView) rootView.findViewById(R.id.feedtitle);
feedDescribtion = (TextView) rootView.findViewById(R.id.feeddescribtion);
startReadRss();
return rootView;
}
public class RssLoadingTask extends AsyncTask<Void, Void, Void> {
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
displayRss();
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
preReadRss();
}
@Override
protected void onProgressUpdate(Void... values) {
// TODO Auto-generated method stub
// super.onProgressUpdate(values);
}
@Override
protected Void doInBackground(Void... arg0) {
// TODO Auto-generated method stub
readRss();
return null;
}
}
private RSSFeed myRssFeed = null;
TextView feedTitle;
TextView feedDescribtion;
// TextView feedPubdate;
// TextView feedLink;
public class MyCustomAdapter extends ArrayAdapter<RSSItem> {
public MyCustomAdapter(Context context, int textViewResourceId,
List<RSSItem> list) {
super(context, textViewResourceId, list);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
// return super.getView(position, convertView, parent);
View row = convertView;
if (row == null) {
//------------------------------- Error 1-------------------------------
LayoutInflater inflater = getLayoutInflater();
//------------------------------- Error 1-------------------------------
row = inflater.inflate(R.layout.row, parent, false);
}
TextView listTitle = (TextView) row.findViewById(R.id.listtitle);
listTitle.setText(myRssFeed.getList().get(position).getTitle());
TextView listPubdate = (TextView) row
.findViewById(R.id.listpubdate);
listPubdate.setText(myRssFeed.getList().get(position).getPubdate());
if (position % 2 == 0) {
listTitle.setBackgroundColor(0xff101010);
listPubdate.setBackgroundColor(0xff101010);
} else {
listTitle.setBackgroundColor(0xff080808);
listPubdate.setBackgroundColor(0xff080808);
}
return row;
}
}
private void startReadRss() {
new RssLoadingTask().execute();
}
private void preReadRss() {
feedTitle.setText("--- wait ---");
feedDescribtion.setText("");
// feedPubdate.setText("");
// feedLink.setText("");
//------------------------------- Error 2 (Solved)-------------------------------
setListAdapter(null);
//------------------------------- Error 2-------------------------------
Toast.makeText(getActivity(), "Reading RSS, Please wait.", Toast.LENGTH_LONG)
.show();
}
private void readRss() {
try {
URL rssUrl = new URL(currenturl);
SAXParserFactory mySAXParserFactory = SAXParserFactory
.newInstance();
SAXParser mySAXParser = mySAXParserFactory.newSAXParser();
XMLReader myXMLReader = mySAXParser.getXMLReader();
RSSHandler myRSSHandler = new RSSHandler();
myXMLReader.setContentHandler(myRSSHandler);
InputSource myInputSource = new InputSource(rssUrl.openStream());
myXMLReader.parse(myInputSource);
myRssFeed = myRSSHandler.getFeed();
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void displayRss() {
if (myRssFeed != null) {
Calendar c = Calendar.getInstance();
// String strCurrentTiime = "\n(Time of Reading - "
// + c.get(Calendar.HOUR_OF_DAY)
// + " Hrs. : "
// + c.get(Calendar.MINUTE) + " Mins.)\n" +c.get(Calendar.AM_PM);
SimpleDateFormat sdf = new SimpleDateFormat(
"MMMM-dd-yyyy HH:mm:ss a");
String strCurrentTiime = sdf.format(c.getTime());
feedTitle.setText(myRssFeed.getTitle());
feedDescribtion.setText(strCurrentTiime);
// feedPubdate.setText(myRssFeed.getPubdate());
// feedLink.setText(myRssFeed.getLink());
MyCustomAdapter adapter = new MyCustomAdapter(getActivity(), R.layout.row,
myRssFeed.getList());
//------------------------------- Error 3 (Solved)-------------------------------
setListAdapter(adapter);
//------------------------------- Error 3-------------------------------
}
}
@Override
//------------------------------- Error 4 (Solved)-------------------------------
protected void onListItemClick(ListView l, View v, int position, long id) {
//------------------------------- Error 4-------------------------------
// TODO Auto-generated method stub
Intent intent = new Intent(getActivity(), ShowDetails.class);
Bundle bundle = new Bundle();
bundle.putString("keyTitle", myRssFeed.getItem(position).getTitle());
bundle.putString("keyDescription", myRssFeed.getItem(position)
.getDescription());
bundle.putString("keyLink", myRssFeed.getItem(position).getLink());
bundle.putString("keyPubdate", myRssFeed.getItem(position).getPubdate());
intent.putExtras(bundle);
startActivity(intent);
}
}
公共类TopStoriesFragment扩展片段{
公共字符串thehindu=”http://www.thehindu.com/news/?service=rss";
公共字符串toi=”http://timesofindia.feedsportal.com/c/33039/f/533965/index.rss";
公共字符串=”http://feeds.reuters.com/reuters/topNews";
公共字符串deccanherald=”http://www.deccanherald.com/rss-internal/top-stories.rss";
公共字符串currenturl=印度教;
AlertDialog-levelDialog;
公共字符串伪造新闻=”http://thepuntended.wordpress.com/";
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
视图根视图=充气机。充气(R.layout.fragment\u top\u rated,容器,false);
feedTitle=(TextView)rootView.findViewById(R.id.feedTitle);
feedDescription=(TextView)rootView.findViewById(R.id.feedDescription);
startReadRss();
返回rootView;
}
公共类RssLoadingTask扩展异步任务{
@凌驾
受保护的void onPostExecute(void结果){
//TODO自动生成的方法存根
displayRss();
}
@凌驾
受保护的void onPreExecute(){
//TODO自动生成的方法存根
preReadRss();
}
@凌驾
受保护的void onProgressUpdate(void…值){
//TODO自动生成的方法存根
//super.onProgressUpdate(值);
}
@凌驾
受保护的Void doInBackground(Void…arg0){
//TODO自动生成的方法存根
readRss();
返回null;
}
}
私有RSSFeed myRssFeed=null;
文本视图feedTitle;
文本视图反馈描述;
//TextView feedPubdate;
//文本视图feedLink;
公共类MyCustomAdapter扩展了ArrayAdapter{
公共MyCustomAdapter(上下文,int textViewResourceId,
(列表){
super(上下文、textViewResourceId、列表);
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图){
//TODO自动生成的方法存根
//返回super.getView(position、convertView、parent);
视图行=转换视图;
if(行==null){
//-------------------------------错误1-------------------------------
LayoutInflater充气机=getLayoutInflater();
//-------------------------------错误1-------------------------------
行=充气机。充气(R.layout.row,父级,false);
}
TextView listTitle=(TextView)row.findViewById(R.id.listTitle);
listTitle.setText(myRssFeed.getList().get(position.getTitle());
TextView listPubdate=(TextView)行
.findViewById(R.id.listpubdate);
listPubdate.setText(myRssFeed.getList().get(position.getPubdate());
如果(位置%2==0){
listTitle.setBackgroundColor(0xff101010);
listPubdate.setBackgroundColor(0xff101010);
}否则{
listTitle.setBackgroundColor(0xff080808);
listPubdate.setBackgroundColor(0xff080808);
}
返回行;
}
}
私有void startReadRss(){
新的RssLoadingTask().execute();
}
私有void preReadRss(){
feedTitle.setText(“--wait--”);
FeedDescription.setText(“”);
//feedPubdate.setText(“”);
//feedLink.setText(“”);
//-------------------------------错误2(已解决)-------------------------------
setListAdapter(空);
//-------------------------------错误2-------------------------------
Toast.makeText(getActivity(),“正在阅读RSS,请稍候”,Toast.LENGTH\u LONG)
.show();
}
私有void readRss(){
试一试{
URL rssUrl=新URL(当前URL);
SAXParserFactory mySAXParserFactory=SAXParserFactory
.newInstance();
SAXParser mySAXParser=mySAXParserFactory.newSAXParser();
XMLReader myXMLReader=myaxParser.getXMLReader();
RSSHandler-myRSSHandler=新的RSSHandler();
setContentHandler(myRSSHandler);
InputSource myInputSource=新的InputSource(rssUrl.openStream());
parse(myInputSource);
myRssFeed=myRSSHandler.getFeed();
}捕获(格式错误){
//TODO自动生成的捕捉块
e、 printStackTrace();
}捕获(ParserConfiguration异常e){
//TODO自动生成的捕捉块
e、 printStackTrace();
}捕获(SAXE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
私有void displayRss(){
如果(myRssFeed!=null){
Calendar c=Calendar.getInstance();
//String strcurrenttime=“\n(读取时间--”
//+c.get(日历小时)
//+“小时数:”
//+c.get(Calendar.MINUTE)+“Mins.\n”+c.get(Calendar.AM\u PM);
SimpleDataFormat sdf=新SimpleDataFormat(
“mm-dd-yyyy HH:mm:ss a”);
字符串strcurrenttime=sdf.format(c.getTime());
feedTitle.setText(myRssFeed.getTitle());
feedDescription.setText(strcurrenttime);
//feedPubdate.setText(myRssFeed.getPubdate());
//feedLink.setText(myRssFeed.getLink());
MyCustomAdapter=新的MyCustomAdapter(getActivity(),R.layout.R
<?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="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/back"
android:orientation="vertical" >
<TextView
android:id="@+id/feedtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/Black"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:textStyle="bold" />
<TextView
android:textColor="@color/Black"
android:id="@+id/feeddescribtion"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" />
</LinearLayout>
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="@drawable/divider" />
<TextView
android:id="@android:id/empty"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="No Data" />
</LinearLayout>
public LayoutInflater inflater
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
this.inflater = inflater;
}
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
TextView feedTitle;
TextView feedDescribtion;
ListView listView;
public View onCreateView(...) {
...
feedTitle = (TextView) rootView.findViewById(R.id.feedtitle);
feedDescribtion = (TextView) rootView.findViewById(R.id.feeddescribtion);
listView = (ListView) rootView.findViewById(android.R.id.list);
...
}
private void displayRss() {
...
listView.setAdapter(adapter); // instead of "setAdapter(adapter)"
}
listView = (ListView) rootView.findViewById(android.R.id.list);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
... // body of your current onListItemClick() method
}
});