Orientation change will be harder to handle... see this for help: http://developer.android.com/guide/topics/resources/runtime-changes.html
On Thursday, October 18, 2012 12:40:49 PM UTC+2, Giosia Gentile wrote: > > Thank you I will try it this evening!! > Please can you help me also with the screen orientation??? I used the > setRetainIstance(true) but it donìt work!! > > On Thursday, October 18, 2012 10:08:08 AM UTC+2, Piren wrote: >> >> >> http://developer.android.com/reference/android/support/v4/view/ViewPager.html#setOffscreenPageLimit(int) >> >> just set it to 2 >> >> On Wednesday, October 17, 2012 7:30:54 PM UTC+2, Giosia Gentile wrote: >>> >>> it is one week I try to solve this problem whitout success. Please >>> help me. >>> >>> I use the tabs navigation with viewpager. This is the class where I >>> put the tabs and the FragmentPagerAdapter class: >>> public class Detail extends SherlockFragmentActivity { >>> >>> ViewPager mViewPager; >>> >>> TabsAdapter mTabsAdapter; >>> >>> >>> @Override >>> public void onCreate(Bundle savedInstanceState) { >>> >>> super.onCreate(savedInstanceState); >>> >>> >>> setContentView(R.layout.activity_main); >>> >>> ... >>> >>> >>> >>> ActionBar bar = getSupportActionBar(); >>> bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); >>> bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE); >>> >>> mViewPager = (ViewPager)findViewById(R.id.pager); >>> >>> // Add the tabs >>> mTabsAdapter = new TabsAdapter(this, bar, mViewPager); >>> mTabsAdapter.addTab(bar.newTab().setText(R.string.filmtab), >>> FragmentFilm.class, null); >>> mTabsAdapter.addTab(bar.newTab().setText(R.string.cinematab), >>> FragmentCinema.class, null); >>> mTabsAdapter.addTab(bar.newTab().setText(R.string.dintornitab), >>> FragmentPdi.class, null); >>> >>> >>> >>> if (savedInstanceState != null) { >>> >>> bar.setSelectedNavigationItem(savedInstanceState.getInt("tab")); >>> } >>> >>> >>> >>> } >>> >>> >>> @Override >>> protected void onSaveInstanceState(Bundle outState) { >>> super.onSaveInstanceState(outState); >>> outState.putInt("tab", >>> getSupportActionBar().getSelectedNavigationIndex()); >>> } >>> >>> >>> public static class TabsAdapter extends FragmentPagerAdapter >>> implements ViewPager.OnPageChangeListener, ActionBar.TabListener >>> { >>> private final Context mContext; >>> private final ActionBar mBar; >>> private final ViewPager mViewPager; >>> private final ArrayList<TabInfo> mTabs = new >>> ArrayList<TabInfo>(); >>> >>> static final class TabInfo { >>> private final Class<?> clss; >>> private final Bundle args; >>> >>> TabInfo(Class<?> _class, Bundle _args) { >>> clss = _class; >>> args = _args; >>> } >>> } >>> >>> public TabsAdapter(Detail activity, ActionBar bar, ViewPager >>> pager) { >>> super(activity.getSupportFragmentManager()); >>> mContext = activity; >>> mBar = bar; >>> mViewPager = pager; >>> mViewPager.setAdapter(this); >>> mViewPager.setOnPageChangeListener(this); >>> } >>> >>> public void addTab(ActionBar.Tab tab, Class<? extends >>> Fragment> clss, Bundle args) { >>> TabInfo info = new TabInfo(clss, args); >>> tab.setTag(info); >>> tab.setTabListener(this); >>> mTabs.add(info); >>> mBar.addTab(tab); >>> notifyDataSetChanged(); >>> } >>> >>> @Override >>> public int getCount() { >>> return mTabs.size(); >>> } >>> >>> @Override >>> public Fragment getItem(int position) { >>> TabInfo info = mTabs.get(position); >>> return Fragment.instantiate(mContext, >>> info.clss.getName(), info.args); >>> } >>> >>> @Override >>> public void onPageScrolled(int position, float >>> positionOffset, int positionOffsetPixels) { >>> } >>> >>> @Override >>> public void onPageSelected(int position) { >>> mBar.setSelectedNavigationItem(position); >>> } >>> >>> @Override >>> public void onPageScrollStateChanged(int state) { >>> } >>> >>> @Override >>> public void onTabSelected(Tab tab, FragmentTransaction ft) { >>> Object tag = tab.getTag(); >>> for (int i=0; i<mTabs.size(); i++) { >>> if (mTabs.get(i) == tag) { >>> mViewPager.setCurrentItem(i); >>> } >>> } >>> } >>> >>> @Override >>> public void onTabUnselected(Tab tab, FragmentTransaction ft) >>> { >>> >>> } >>> >>> @Override >>> public void onTabReselected(Tab tab, FragmentTransaction ft) >>> { >>> >>> } >>> } >>> } >>> >>> The 3 fragment classes are all the same I copy here just one; In the >>> fragment class I use async task for download the data I need to put in >>> the view, I do this in the onActivityCreated method: >>> >>> public class FragmentFilm extends SherlockFragment >>> { >>> >>> private Detail act; >>> >>> private DetailedRec detail_film; >>> private View view; >>> private String a; >>> >>> >>> >>> >>> @Override >>> public View onCreateView(LayoutInflater inflater, ViewGroup >>> container, >>> Bundle savedInstanceState) >>> { >>> >>> >>> >>> setRetainInstance(true); >>> view = inflater.inflate(R.layout.tab_film_info, container, >>> false); >>> >>> return view; >>> } >>> >>> /* >>> @Override >>> public void onSaveInstanceState(Bundle outState) { >>> super.onSaveInstanceState(outState); >>> >>> >>> }*/ >>> >>> >>> @Override >>> public void onCreate(Bundle savedInstanceState) { >>> super.onCreate(savedInstanceState); >>> >>> act = (Detail) getActivity(); >>> >>> >>> } >>> >>> >>> >>> >>> @Override >>> public void onActivityCreated(Bundle savedInstanceState) { >>> super.onActivityCreated(savedInstanceState); >>> new DownloadFilmDetailAsyncTask().execute(); >>> >>> >>> } >>> >>> >>> >>> private class DownloadFilmDetailAsyncTask extends AsyncTask<Void, >>> DetailedRec, Void> >>> { >>> >>> @Override >>> protected void onPreExecute() { >>> >>> super.onPreExecute(); >>> >>> >>> } >>> >>> @Override >>> protected void onPostExecute(Void result) { >>> >>> super.onPostExecute(result); >>> >>> ProgressBar prBar = >>> (ProgressBar)getView().findViewById(R.id.progressbar_film); >>> prBar.setVisibility(View.GONE); >>> ScrollView lay = >>> (ScrollView)getView().findViewById(R.id.tab_filmsummary); >>> lay.setVisibility(View.VISIBLE); >>> >>> >>> } >>> >>> @Override >>> protected Void doInBackground(Void... params) >>> { >>> try >>> { >>> >>> >>> String locale = >>> getResources().getConfiguration().locale.getDisplayName(); >>> >>> >>> JSONObject objSend = new JSONObject(); >>> objSend.put("idFilm", act.getIdFilm()); >>> objSend.put("cinemaId",act.getIdCinema()); >>> int ind = locale.indexOf("("); >>> String locale_send = locale.substring(0, ind-1); >>> objSend.put("locale", locale_send); >>> ArrayList<String> otherCin = new >>> ArrayList<String>(Arrays.asList(act.getOtherCinemas())); >>> JSONArray othCin = new JSONArray(otherCin); >>> objSend.put("otherCinemas", othCin ); >>> JSONObject jsonObject = >>> sendAndGetJSONObject(JSON_SERVER+"JsonServer?op=getFilmbyId",objSend); >>> >>> >>> >>> DetailedRec detail_rec = new DetailedRec(); >>> //FILM >>> detail_rec.setFilmId(jsonObject.getString("filmId")); >>> detail_rec.setName(jsonObject.getString("name")); >>> >>> detail_rec.setImageUrl(jsonObject.getString("imageUrl").replace("640", >>> "80")); >>> detail_rec.setActors(jsonObject.getString("actors")); >>> detail_rec.setGenre(jsonObject.getString("genre")); >>> >>> detail_rec.setDirector(jsonObject.getString("director")); >>> detail_rec.setPlot(jsonObject.getString("plot")); >>> detail_rec.setYear(jsonObject.getString("year")); >>> >>> detail_rec.setDuration(jsonObject.getString("duration")); >>> >>> detail_rec.setTrailer(jsonObject.getString("trailer")); >>> detail_rec.setRating(jsonObject.getString("rating")); >>> >>> detail_film = detail_rec; >>> publishProgress(detail_rec); >>> >>> >>> } >>> catch (IOException ignored) >>> { >>> } >>> catch (JSONException ignored) >>> { >>> } >>> return null; >>> } >>> >>> @Override >>> protected void onProgressUpdate(DetailedRec... values) >>> { >>> for (final DetailedRec detail_rec : values) >>> { >>> >>> updateViews(detail_rec); >>> >>> } >>> >>> } >>> >>> private JSONObject getJSONObject(String url) throws >>> IOException, MalformedURLException, JSONException >>> { >>> HttpURLConnection conn = (HttpURLConnection) new >>> URL(url).openConnection(); >>> >>> >>> InputStream in = conn.getInputStream(); >>> >>> try >>> { >>> StringBuilder sb = new StringBuilder(); >>> BufferedReader r = new BufferedReader(new >>> InputStreamReader(new DoneHandlerInputStream(in),"WINDOWS_1252")); >>> for (String line = r.readLine(); line != null; line = >>> r.readLine()) >>> { >>> sb.append(line); >>> } >>> return new JSONObject(sb.toString()); >>> } >>> finally >>> { >>> in.close(); >>> } >>> } >>> >>> >>> private JSONObject sendAndGetJSONObject(String url,JSONObject >>> request) throws IOException, MalformedURLException, JSONException >>> { >>> >>> HttpClient client = new DefaultHttpClient(); >>> >>> HttpConnectionParams.setConnectionTimeout(client.getParams(), >>> 10000); //Timeout Limit >>> InputStream in=null; >>> try{ >>> HttpPost post = new HttpPost(url); >>> StringEntity se = new >>> StringEntity(request.toString()); >>> se.setContentType((Header) new >>> BasicHeader(HTTP.CONTENT_TYPE, "application/json")); >>> post.setEntity(se); >>> HttpResponse response = client.execute(post); >>> HttpEntity entity = response.getEntity(); >>> in = entity.getContent(); >>> StringBuilder sb = new StringBuilder(); >>> BufferedReader r = new BufferedReader(new >>> InputStreamReader(new DoneHandlerInputStream(in),"WINDOWS_1252")); >>> for (String line = r.readLine(); line != null; line = >>> r.readLine()) >>> { >>> sb.append(line); >>> } >>> return new JSONObject(sb.toString()); >>> }catch(Exception e){ >>> >>> } >>> finally >>> { >>> in.close(); >>> } >>> >>> return null; >>> >>> } >>> >>> >>> } >>> >>> private void updateViews(final DetailedRec detail_rec){ >>> //FILM >>> TextView filmName = (TextView) >>> getView().findViewById(R.id.movieTitle); >>> filmName.setText(detail_rec.getName().trim()); >>> TextView actors = (TextView) >>> getView().findViewById(R.id.movieActor); >>> actors.setText(detail_rec.getActors().trim()); >>> TextView genre = (TextView) >>> getView().findViewById(R.id.movieGenre); >>> genre.setText(detail_rec.getGenre().trim()); >>> TextView director = (TextView) >>> getView().findViewById(R.id.movieDirector); >>> director.setText(detail_rec.getDirector().trim()); >>> TextView plot = (TextView) >>> getView().findViewById(R.id.moviePlot); >>> plot.setText(detail_rec.getPlot().trim()); >>> TextView year = (TextView) >>> getView().findViewById(R.id.movieYear); >>> year.setText(detail_rec.getYear().trim()); >>> TextView duration = (TextView) >>> getView().findViewById(R.id.movieDuration); >>> duration.setText(detail_rec.getDuration().trim()); >>> ImageView image = (ImageView) >>> getView().findViewById(R.id.moviePoster); >>> >>> new >>> DownloadImagesTask(detail_rec.getImageUrl().trim().replace("80", >>> "100")).execute(image); >>> // >>> image.setImageBitmap(downloadBitmap(detail_rec.getImageUrl().trim().replace("80", >>> >>> >>> "100"))); >>> //Rating >>> if(detail_rec.getRating().compareTo("N/A")!=0){ >>> RatingBar rateBar = >>> (RatingBar)getView().findViewById(R.id.MovieRatingBar); >>> >>> rateBar.setRating(Float.parseFloat(detail_rec.getRating())); >>> } >>> //Trailer >>> Button trailer = (Button)getView().findViewById(R.id.trailer); >>> if(detail_rec.getTrailer().compareTo("")!=0){ >>> trailer.setVisibility(View.VISIBLE); >>> trailer.setOnClickListener(new OnClickListener() { >>> >>> @Override >>> public void onClick(View v) { >>> int index = detail_rec.getTrailer().indexOf("v="); >>> String videoId=""; >>> if(index!=-1){ >>> videoId = >>> detail_rec.getTrailer().substring(index+2); //"Fee5vbFLYM4"; >>> Intent intent = new Intent(Intent.ACTION_VIEW, >>> Uri.parse("vnd.youtube:"+videoId)); >>> intent.putExtra("VIDEO_ID", videoId); >>> startActivity(intent); >>> } >>> >>> >>> } >>> }); >>> } >>> >>> } >>> >>> } >>> >>> Ok, in my application I want the fragment is load one time. I explain >>> so good: When I start the Detail class the fragment classes are >>> istantiate and the AsyncTask in all the 3 fragment start, now when the >>> user switch from one tab to other I want the fragment in tab >>> unselected don't lost the data and the view because now when I switch >>> from one tab to another and then return the first tab this is recreate >>> and the onActivityCreated method is called again! >>> >>> Please help me, I search in all place but I dont find solution!! >>> >>> P.S. I use the SherlockActionBar, I don't know id it is relevant. >>> Sorry for my bad English >>> >>> Thank you >>> >> -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
