我创建了一个活动来获取数据并将数据显示到自定义列表视图中。
现在我已将此更改为片段，但onItemclick无效。
SiteNews.java
public class SiteNews extends Fragment implements OnTabChangeListener,
OnPageChangeListener {
private TabHost tabHost;
private ViewPager viewPager;
private FragmentPagerNewsAdapter fragmentPagerNewsAdapter;
int i = 0;
View v;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
v = inflater.inflate(R.layout.tabs_news_layout, container, false);
// put tabhost here:
// ***************************** part 1
// ***************************************************
i++;
// init tabhost
this.initializeTabHost(savedInstanceState);
// init ViewPager
this.initializeViewPager();
// ***************************** part 1
// ***************************************************
return v;
}
private void initializeViewPager() {
List<Fragment> fragmentsnews = new Vector<Fragment>();
fragmentsnews.add(new FragmentAllNews());
fragmentsnews.add(new FragmentUnreadNews());
this.fragmentPagerNewsAdapter = new FragmentPagerNewsAdapter(
getChildFragmentManager(), fragmentsnews);
this.viewPager = (ViewPager) v.findViewById(R.id.viewPagernews);
this.viewPager.setAdapter(this.fragmentPagerNewsAdapter);
this.viewPager.setOnPageChangeListener(this);
}
// fake content for tabhost
class FakeContent implements TabContentFactory {
private final Context mContext;
public FakeContent(Context context) {
mContext = context;
}
@Override
public View createTabContent(String tag) {
View v = new View(mContext);
v.setMinimumHeight(0);
v.setMinimumWidth(0);
return v;
}
}
private void initializeTabHost(Bundle args) {
tabHost = (TabHost) v.findViewById(android.R.id.tabhost);
tabHost.setup();
for (int i = 1; i <= 2; i++) {
TabHost.TabSpec tabSpec;
tabSpec = tabHost.newTabSpec("Tab " + i);
tabSpec.setIndicator("Tab " + i);
tabSpec.setContent(new FakeContent(getActivity()));
tabHost.addTab(tabSpec);
}
tabHost.setOnTabChangedListener(this);
}
@Override
public void onTabChanged(String tabId) {
int pos = this.tabHost.getCurrentTab();
this.viewPager.setCurrentItem(pos);
HorizontalScrollView hScrollView = (HorizontalScrollView) v
.findViewById(R.id.hScrollViewnews);
View tabView = tabHost.getCurrentTabView();
int scrollPos = tabView.getLeft()
- (hScrollView.getWidth() - tabView.getWidth()) / 2;
hScrollView.smoothScrollTo(scrollPos, 0);
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageSelected(int position) {
this.tabHost.setCurrentTab(position);
}
}
FragmentAllnews.java
public class FragmentAllNews extends Fragment implements View.OnClickListener {
ViewGroup v;
ListView list;
CustomAdapterAllNews adapter;
JSONObject json_data;
JSONArray jArray;
NewsGetData newsGetData;
ArrayList<String> id, title_news, text_news, cat_id, status;
String data, url, msg, check, readnumber, ACTION_SCAN, contents;
ArrayList<News> newsha;
News n;
int sizearray;
Resources res;
ArrayList<News> items;
News ne;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
v = (ViewGroup) inflater.inflate(R.layout.tabfragmentallnews,
container, false);
list = (ListView) v.findViewById(R.id.listallnews);
res = getResources();
createarray();
/* items = new ArrayList<News>();
for (int k = 0; k < 25; k++) {
ne = new News();
ne.setTitle_news("title_news " + String.valueOf(k));
ne.setText_news("text_news " + String.valueOf(k));
ne.setCat_id(k);
ne.setStatus(k);
items.add(ne);
}*/
ReadData task1 = new ReadData();
task1.execute(new String[] { "url address" });
return v;
}
private void createarray() {
id = new ArrayList<String>();
title_news = new ArrayList<String>();
text_news = new ArrayList<String>();
cat_id = new ArrayList<String>();
status = new ArrayList<String>();
id.clear();
title_news.clear();
text_news.clear();
cat_id.clear();
status.clear();
}
private class ReadData extends AsyncTask<String, Void, Boolean> {
ProgressDialog dialog = new ProgressDialog(getActivity());
@Override
protected void onPreExecute() {
dialog.setMessage("Reading Data...");
dialog.show();
}
String text = "";
ArrayList<String> list1;
@Override
protected Boolean doInBackground(String... urls) {
url = "php url address";
InputStream is1;
for (String url1 : urls) {
// Read from web to InputStream
try {
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url);
// HttpPost post = new HttpPost(url1);
HttpResponse response = client.execute(post);
is1 = response.getEntity().getContent();
} catch (ClientProtocolException e) {
Toast.makeText(getActivity(), e.toString(),
Toast.LENGTH_LONG).show();
return false;
} catch (IOException e) {
Toast.makeText(getActivity(), e.toString(),
Toast.LENGTH_LONG).show();
return false;
}
// end of Read from web to InputStream
// Convert from InputStream to String Text
BufferedReader reader;
try {
reader = new BufferedReader(new InputStreamReader(is1,
"iso-8859-1"), 8);
String line = null;
while ((line = reader.readLine()) != null) {
text += line + "\n";
}
is1.close();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// end of Convert from InputStream to String Text
// Convert from Text to JSON and add to ArrayList list1
list1 = new ArrayList<String>();
try {
JSONArray jArray = new JSONArray(text);
for (int i = 0; i < jArray.length(); i++) {
JSONObject jsonData = jArray.getJSONObject(i);
list1.add(jsonData.getString("title_news") + " - "
+ jsonData.getString("text_news"));
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// end of Convert from Text to JSON and add to ArrayList list1
}
return true;
}
@Override
protected void onPostExecute(Boolean result) {
if (result == true) {
// add list1 to ArrayAdapter
ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(
getActivity(), android.R.layout.simple_list_item_1,
list1);
// set adapter into listStudent
// list.setAdapter(adapter1);
Toast.makeText(getActivity(), text, Toast.LENGTH_LONG).show();
data = text;
newsha = parseJSON3(data);
adddata(newsha);
} else {
Toast.makeText(getActivity(), "Error", Toast.LENGTH_LONG)
.show();
}
dialog.dismiss();
}
}
/*
* @Override public void onItemClick(AdapterView<?> parent, View
* clickedView, int pos, long id) { TextView tv1 = (TextView)clickedView;
* int commaIndex = tv1.getText().toString().indexOf(","); String st_id =
* tv1.getText().toString().substring(0, commaIndex);
*
* Intent in = new Intent(this, EditDataActivity.class);
* in.putExtra("st_id", st_id); startActivity(in);
*
* }
*/
public void onItemClick(int mPosition) {
try {
News tempValues = (News) newsha.get(mPosition);
Toast.makeText(getActivity(), tempValues.getText_news(),
Toast.LENGTH_LONG).show();
} catch (Exception e) {
// Toast.makeText(CustomListView,"no", Toast.LENGTH_LONG).show();
}
}
public ArrayList<News> parseJSON3(String result) {
ArrayList<News> userha = new ArrayList<News>();
try {
jArray = new JSONArray(result);
for (int i = 0; i < jArray.length(); i++) {
json_data = jArray.getJSONObject(i);
n = new News();
n.setId(json_data.getInt("id"));
id.add(String.valueOf(json_data.getInt("id")));
n.setTitle_news(json_data.getString("title_news"));
title_news.add(json_data.getString("title_news"));
n.setText_news(json_data.getString("text_news"));
text_news.add(json_data.getString("text_news"));
n.setCat_id(json_data.getInt("cat_id"));
cat_id.add(String.valueOf(json_data.getInt("cat_id")));
n.setStatus(json_data.getInt("status"));
status.add(String.valueOf(json_data.getInt("status")));
userha.add(n);
}
sizearray = text_news.size();
if (sizearray <= 0) {
Toast.makeText(getActivity(), "get data error",
Toast.LENGTH_LONG).show();
} else {
}
} catch (JSONException e) {
// toast(9);
}
return userha;
}
private void adddata(ArrayList<News> newsha2) {
adapter = new CustomAdapterAllNews(getActivity(), newsha2, newsha2, res);
list.setAdapter(adapter);
}
@Override
public void onClick(View v) {
}
}
CustomAdapterAllNews.java
public class CustomAdapterAllNews extends BaseAdapter implements OnClickListener {
/*********** Declare Used Variables *********/
private Activity activitynews;
private ArrayList datanews;
private static LayoutInflater inflaternews=null;
public Resources resnews;
News tempValuesnews=null;
int i=0;
TableLayout tableLayout1news;
private List<News> worldpopulationlistnews = null;
private ArrayList<News> arraylistnews;
/************* CustomAdapter Constructor *****************/
public CustomAdapterAllNews(Activity a, ArrayList d, List<News> worldpopulationlist, Resources resLocal) {
/********** Take passed values **********/
activitynews = a;
datanews=d;
resnews = resLocal;
this.arraylistnews = new ArrayList<News>();
this.worldpopulationlistnews = worldpopulationlist;
this.arraylistnews.addAll(worldpopulationlist);
/*********** Layout inflator to call external xml layout () **********************/
inflaternews = (LayoutInflater)activitynews.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
/******** What is the size of Passed Arraylist Size ************/
public int getCount() {
if(datanews.size()<=0)
return 1;
return datanews.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
/********* Create a holder to contain inflated xml file elements ***********/
public static class ViewHolder{
public TextView text;
public TextView text1;
public ImageView image;
}
/*********** Depends upon data size called for each row , Create each ListView row ***********/
@SuppressLint("InflateParams")
public View getView(int position, View convertView, ViewGroup parent) {
View vi=convertView;
ViewHolder holder;
if(convertView==null){
/********** Inflate tabitem.xml file for each row ( Defined below ) ************/
vi = inflaternews.inflate(R.layout.list_news, null);
/******** View Holder Object to contain tabitem.xml file elements ************/
holder=new ViewHolder();
holder.text=(TextView)vi.findViewById(R.id.textlistnews);
holder.text1=(TextView)vi.findViewById(R.id.text1listnews);
holder.image=(ImageView)vi.findViewById(R.id.imagelistnews);
/************ Set holder with LayoutInflater ************/
vi.setTag(holder);
}
else
holder=(ViewHolder)vi.getTag();
if(datanews.size()<=0)
{
holder.text.setText("No Data");
holder.text1.setText("نتیجه یافت نشد");
holder.image.setImageResource(resnews.getIdentifier("com.iranvizhe:drawable/"+"image00",null,null));
}
else
{
/***** Get each Model object from Arraylist ********/
tempValuesnews=null;
tempValuesnews = (News) datanews.get(position);
/************ Set Model values in Holder elements ***********/
holder.text.setText(tempValuesnews.getTitle_news());
holder.text1.setText(tempValuesnews.getText_news());
holder.image.setImageResource(resnews.getIdentifier("com.iranvizhe:drawable/image0",null,null));
/******** Set Item Click Listner for LayoutInflater for each row ***********/
vi.setOnClickListener(new OnItemClickListener(position));
}
return vi;
}
@Override
public void onClick(View v) {
Log.v("CustomAdapter", "=====Row button clicked");
}
/********* Called when Item click in ListView ************/
private class OnItemClickListener implements OnClickListener{
private int mPosition;
OnItemClickListener(int position){
mPosition = position;
}
@Override
public void onClick(View arg0) {
// FragmentAllNews sct = (FragmentAllNews)activitynews;
// Tab1Fragment sct = (Tab1Fragment)activity;
// sct.onItemClick(mPosition);
}
}
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
worldpopulationlistnews.clear();
if (charText.length() == 0) {
worldpopulationlistnews.addAll(arraylistnews);
}
else
{
for (News wp : arraylistnews)
{
if (wp.getTitle_news().toLowerCase(Locale.getDefault()).contains(charText)
| wp.getText_news().toLowerCase(Locale.getDefault()).contains(charText))
{
worldpopulationlistnews.add(wp);
}
}
}
notifyDataSetChanged();
}
}
当我输入此代码时：
// FragmentAllNews sct = (FragmentAllNews)activitynews;
// Tab1Fragment sct = (Tab1Fragment)activity;
// sct.onItemClick(mPosition);
对我不起作用，我需要点击列表视图。
答案 0 :(得分：1)
不要在适配器中使用v.setOnclicklistener()，最好只在片段中使用，如下所示
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,int position, long id) {
try {
News tempValues = (News) newsha.get(mPosition);
Toast.makeText(getActivity(), tempValues.getText_news(),
Toast.LENGTH_LONG).show();
} catch (Exception e) {
// Toast.makeText(CustomListView,"no", Toast.LENGTH_LONG).show();
}
}
});