how can i update view when fragment change?
- by user1524393
i have a activity that have 2 sherlockfragment in this
The first two pages display fragments with custom list views which are built from xml from server using AsyncTask. However, when the app runs, only one list view is displayed, the other page is just blank
public class VpiAbsTestActivity extends SherlockFragmentActivity {
private static final String[] CONTENT = new String[] { "1","2"};
TestFragmentAdapter mAdapter;
ViewPager mPager;
PageIndicator mIndicator;
protected void onCreate(Bundle savedInstanceState) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
super.onCreate(savedInstanceState);
setContentView(R.layout.simple_tabs);
mAdapter = new TestFragmentAdapter(getSupportFragmentManager());
mPager = (ViewPager)findViewById(R.id.pager);
mPager.setAdapter(mAdapter);
mIndicator = (TabPageIndicator)findViewById(R.id.indicator);
mIndicator.setViewPager(mPager);
mIndicator.notifyDataSetChanged();
}
class TestFragmentAdapter extends FragmentPagerAdapter {
private int mCount = CONTENT.length;
public TestFragmentAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
switch(position) {
case 0:
return new customlist();
case 1:
return new customlistnotuser();
default:
return null;
}
}
@Override
public int getCount() {
return mCount;
}
public CharSequence getPageTitle(int position) {
return VpiAbsTestActivity.CONTENT[position % VpiAbsTestActivity.CONTENT.length].toUpperCase();
}
@Override
public void destroyItem(View collection, int position, Object view) {
((ViewPager) collection).removeView((View) view);
}
}
}
what can i update viewpager when change pages ?
the customlistnotuser page likes customlist page but not show
public class customlistnotuser extends SherlockFragment {
// All static variables
static final String URL = "url";
// XML node keys
static final String KEY_TEST = "test"; // parent node
static final String KEY_ID = "id";
static final String KEY_TITLE = "title";
static final String KEY_Description = "description";
static final String KEY_DURATION = "duration";
static final String KEY_THUMB_URL = "thumb_url";
static final String KEY_PRICE = "price";
static final String KEY_URL = "url";
private ProgressDialog pDialog;
ListView list;
LazyAdapterbeth adapter;
XMLParser parser = new XMLParser();
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
new getFeed().execute();
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
View thisfragment = inflater.inflate(R.layout.dovomi, container, false);
return thisfragment;
}
private class getFeed extends AsyncTask<Void, Void, Document> {
}
protected Document doInBackground(Void... params) {
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
return doc;
}
protected void onPostExecute(Document doc) {
ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
NodeList nl = doc.getElementsByTagName(KEY_TEST);
// looping through all song nodes <song>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_Description, parser.getValue(e, KEY_Description));
map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION));
map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL));
map.put(KEY_PRICE, parser.getValue(e, KEY_PRICE));
map.put(KEY_URL, parser.getValue(e, KEY_URL));
// adding HashList to ArrayList
songsList.add(map);
pDialog.dismiss();
}
list=(ListView)getActivity().findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adapter=new LazyAdapterbeth(getActivity(), songsList);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
