I'm trying to load some number of more items in my ListView when I scroll to the bottom and just ADD them to the current ones. It works well, but recently I found out that it loads ALL objects again, only with more items. I'm using Parse.com. I discovered, that Parse.com provides their own custom ParseQueryAdapter, which contains getNextPageView() method. It loads move items, but only when the user clicks on the button below. I also tried .setSkip(someNumber) method but it only erases/hides someNumber of items in the top. So I still want to use OnScrollListener and really load-more and not load-again+more.
Do you have any idea, how to do it?
check my codes:
public void updateData() {
mListView = (ListView)getView().findViewById(R.id.animal_list);
final ParseQuery<Animal> query = ParseQuery.getQuery(Animal.class);
query.setCachePolicy(CachePolicy.NETWORK_ONLY);
query.orderByAscending("animal");
query.setLimit(mListView.getCount() + 5);
query.findInBackground(new FindCallback<Animal>() {
#Override
public void done(List<Animal> animals, ParseException error) {
if(animals != null){
mAdapter.clear();
mProgressBar = (ProgressBar) getView().findViewById (R.id.loading_animals);
mProgressBar.setVisibility(View.INVISIBLE);
RelativeLayout footie = (RelativeLayout) getView().findViewById(R.id.footerview);
footie.setVisibility(View.VISIBLE);
for (int i = 0; i < animals.size(); i++) {
mAdapter.add(animals.get(i));
ArrayList<Animal> animal = new ArrayList<Animal>();
animal.add(animals.get(i));
}
}
}
}); }
private class RemoteDataTask extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute(); }
#Override
protected Void doInBackground(Void... params) {
return null;
}
#Override
protected void onPostExecute(Void result) {
mListView = (ListView) getView().findViewById(R.id.animal_list);
mEditText = (EditText) getView().findViewById(R.id.search_animal);
mAdapter = new AnimalAdapter(getActivity(), new ArrayList<Animal>());
mListView.setVisibility(View.VISIBLE);
mListView.setTextFilterEnabled(true);
mListView.setAdapter(mAdapter);
mListView.setOnScrollListener(new OnScrollListener() {
#Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
int totalItemCount) {
final int lastItem = firstVisibleItem + visibleItemCount;
if(lastItem == totalItemCount) {
if (mListView.getCount() > 20) {
RelativeLayout footie = (RelativeLayout) getView().findViewById(R.id.footerview);
mListView.removeFooterView(footie);
}
else{
updateData();
}
}
}
}
Thanks in advance
Try to clear Adapter before setting it to ListView like as follows:
public void updateData() {
mListView = (ListView)getView().findViewById(R.id.animal_list);
final ParseQuery<Animal> query = ParseQuery.getQuery(Animal.class);
query.setCachePolicy(CachePolicy.NETWORK_ONLY);
query.orderByAscending("animal");
query.setLimit(mListView.getCount() + 5);
query.findInBackground(new FindCallback<Animal>() {
#Override
public void done(List<Animal> animals, ParseException error) {
if(animals != null){
mAdapter.clear();
mProgressBar = (ProgressBar) getView().findViewById (R.id.loading_animals);
mProgressBar.setVisibility(View.INVISIBLE);
RelativeLayout footie = (RelativeLayout) getView().findViewById(R.id.footerview);
footie.setVisibility(View.VISIBLE);
mAdapter.clear();///////HERE
for (int i = 0; i < animals.size(); i++) {
mAdapter.add(animals.get(i));
ArrayList<Animal> animal = new ArrayList<Animal>();
animal.add(animals.get(i));
}
}
}
}); }
private class RemoteDataTask extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute(); }
#Override
protected Void doInBackground(Void... params) {
return null;
}
#Override
protected void onPostExecute(Void result) {
mListView = (ListView) getView().findViewById(R.id.animal_list);
mEditText = (EditText) getView().findViewById(R.id.search_animal);
mAdapter = new AnimalAdapter(getActivity(), new ArrayList<Animal>());
mListView.setVisibility(View.VISIBLE);
mListView.setTextFilterEnabled(true);
mListView.setAdapter(mAdapter);
mListView.setOnScrollListener(new OnScrollListener() {
#Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
int totalItemCount) {
final int lastItem = firstVisibleItem + visibleItemCount;
if(lastItem == totalItemCount) {
if (mListView.getCount() > 20) {
RelativeLayout footie = (RelativeLayout) getView().findViewById(R.id.footerview);
mListView.removeFooterView(footie);
}
else{
updateData();
}
}
}
}
You are only adding items without wiping previous data.
Related
I have a Fragment class and an Activity class which is related to that fragment, ViewPager has been initialized inside the Activity of MizActivity
My question is it possible to move ViewPager initialization from Activity class to the Fragment class So that I have better control?
Thanks in advance
Fragment
#SuppressLint("InflateParams") public class TvShowEpisodeDetailsFragment extends Fragment {
TextClicked mCallback;
public interface TextClicked{
void sendText(int position);
}
private Activity mContext;
private TvShowEpisode mEpisode;
private ImageView mBackdrop, mEpisodePhoto;
private TextView mTitle, mDescription, mFileSource, mAirDate, mRating, mDirector, mWriter, mGuestStars, mSeasonEpisodeNumber;
private View mDetailsArea;
private Picasso mPicasso;
private Typeface mMediumItalic, mMedium, mCondensedRegular;
private DbAdapterTvShowEpisodes mDatabaseHelper;
private long mVideoPlaybackStarted, mVideoPlaybackEnded;
private boolean mShowFileLocation;
private Bus mBus;
private int mToolbarColor = 0;
private FloatingActionButton mFab;
private PaletteLoader mPaletteLoader;
private ObservableScrollView mScrollView;
private RecyclerView mEpisodesList;
private String mShowId;
private ArrayList<TvShowEpisode> mEpisodes = new ArrayList<TvShowEpisode>();
private static final String SHOW_ID = "showId";
private RecyclerView recyclerView;
private RecyclerView.Adapter adapter;
private RecyclerView.LayoutManager layoutManager;
private ViewPager mViewPager;
public PlanetAdapter.OnItemClickListener listener;
/**
* Empty constructor as per the Fragment documentation
*/
public TvShowEpisodeDetailsFragment() {}
public static TvShowEpisodeDetailsFragment newInstance(String showId, int season, int episode) {
TvShowEpisodeDetailsFragment pageFragment = new TvShowEpisodeDetailsFragment();
Bundle bundle = new Bundle();
bundle.putString("showId", showId);
bundle.putInt("season", season);
bundle.putInt("episode", episode);
pageFragment.setArguments(bundle);
return pageFragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
setHasOptionsMenu(true);
mContext = getActivity();
mBus = MizuuApplication.getBus();
mShowFileLocation = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean(SHOW_FILE_LOCATION, true);
mPicasso = MizuuApplication.getPicassoDetailsView(getActivity());
mMediumItalic = TypefaceUtils.getRobotoMediumItalic(mContext);
mMedium = TypefaceUtils.getRobotoMedium(mContext);
mCondensedRegular = TypefaceUtils.getRobotoCondensedRegular(mContext);
mDatabaseHelper = MizuuApplication.getTvEpisodeDbAdapter();
// initializing mEpisodes
mShowId = getActivity().getIntent().getExtras().getString(SHOW_ID);
Cursor cursor = mDatabaseHelper.getEpisodes(mShowId);
try {
while (cursor.moveToNext()) {
mEpisodes.add(new TvShowEpisode(mContext, mShowId,
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_TITLE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_PLOT)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SEASON)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_AIRDATE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_DIRECTOR)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_WRITER)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_GUESTSTARS)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_RATING)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_HAS_WATCHED)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_FAVOURITE))
));
}
} catch (Exception e) {
} finally {
cursor.close();
} // mEpisodes initialized
LocalBroadcastManager.getInstance(mContext).registerReceiver(mBroadcastReceiver,
new IntentFilter(LocalBroadcastUtils.UPDATE_TV_SHOW_EPISODE_DETAILS_OVERVIEW));
loadEpisode();
}
#Override
public void onDestroy() {
super.onDestroy();
LocalBroadcastManager.getInstance(mContext).unregisterReceiver(mBroadcastReceiver);
}
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
loadEpisode();
loadData();
}
};
private void loadEpisode() {
if (!getArguments().getString("showId").isEmpty() && getArguments().getInt("season") >= 0 && getArguments().getInt("episode") >= 0) {
Cursor cursor = mDatabaseHelper.getEpisode(getArguments().getString("showId"), getArguments().getInt("season"), getArguments().getInt("episode"));
if (cursor.moveToFirst()) {
mEpisode = new TvShowEpisode(getActivity(),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SHOW_ID)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_TITLE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_PLOT)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SEASON)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_AIRDATE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_DIRECTOR)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_WRITER)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_GUESTSTARS)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_RATING)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_HAS_WATCHED)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_FAVOURITE))
);
mEpisode.setFilepaths(MizuuApplication.getTvShowEpisodeMappingsDbAdapter().getFilepathsForEpisode(
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SHOW_ID)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SEASON)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE))
));
}
cursor.close();
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.episode_details, container, false);
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
// This makes sure that the container activity has implemented
// the callback interface. If not, it throws an exception
try {
mCallback = (TextClicked) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement TextClicked");
}
}
#Override
public void onViewCreated(final View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mBackdrop = (ImageView) view.findViewById(R.id.imageBackground);
mEpisodePhoto = (ImageView) view.findViewById(R.id.episodePhoto);
mDetailsArea = view.findViewById(R.id.details_area);
mTitle = (TextView) view.findViewById(R.id.movieTitle);
mSeasonEpisodeNumber = (TextView) view.findViewById(R.id.textView7);
mDescription = (TextView) view.findViewById(R.id.textView2);
mFileSource = (TextView) view.findViewById(R.id.textView3);
mAirDate = (TextView) view.findViewById(R.id.textReleaseDate);
mRating = (TextView) view.findViewById(R.id.textView12);
mDirector = (TextView) view.findViewById(R.id.director);
mWriter = (TextView) view.findViewById(R.id.writer);
mGuestStars = (TextView) view.findViewById(R.id.guest_stars);
mScrollView = (ObservableScrollView) view.findViewById(R.id.observableScrollView);
mFab = (FloatingActionButton) view.findViewById(R.id.fab);
// setting RecyclerView
mEpisodesList = (RecyclerView) view.findViewById(R.id.episodesLIST);
// getting episodeslist
ArrayList<PlanetModel> episodeslist = new ArrayList<>();
for(TvShowEpisode e : mEpisodes){
episodeslist.add(new PlanetModel(e.mEpisode));
}
// Setting LinearLayoutManager
LinearLayoutManager layoutManager
= new LinearLayoutManager(mContext.getApplicationContext(), LinearLayoutManager.HORIZONTAL, false);
//mEpisodesList.setLayoutManager(new LinearLayoutManager(mContext));
mEpisodesList.setLayoutManager(layoutManager);
// Setting RecyclerView Adapter
mEpisodesList.setAdapter(new PlanetAdapter(episodeslist, new PlanetAdapter.OnItemClickListener() {
#Override public void onItemClick(String item) {
SharedPreferences getPref = getActivity ().getSharedPreferences("PlanetAdapter", Context.MODE_PRIVATE);
int pos = getPref.getInt("newPosition",0);
mCallback.sendText(pos);
}
}));
mFab.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
ViewUtils.animateFabJump(v, new SimpleAnimatorListener() {
#Override
public void onAnimationEnd(Animator animation) {
play();
}
});
}
});
if (MizLib.isTablet(mContext))
mFab.setType(FloatingActionButton.TYPE_NORMAL);
final int height = MizLib.getActionBarAndStatusBarHeight(getActivity());
mScrollView = (ObservableScrollView) view.findViewById(R.id.observableScrollView);
mScrollView.setOnScrollChangedListener(new OnScrollChangedListener() {
#Override
public void onScrollChanged(ScrollView who, int l, int t, int oldl, int oldt) {
final int headerHeight = mEpisodePhoto.getHeight() - height;
final float ratio = (float) Math.min(Math.max(t, 0), headerHeight) / headerHeight;
final int newAlpha = (int) (ratio * 255);
mBus.post(new BusToolbarColorObject(mToolbarColor, newAlpha));
if (MizLib.isPortrait(mContext)) {
// Such parallax, much wow
mEpisodePhoto.setPadding(0, (int) (t / 1.5), 0, 0);
}
}
});
mScrollView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
ViewUtils.setLayoutParamsForDetailsEmptyView(mContext, view,
mBackdrop, mScrollView, this);
}
});
loadData();
mPicasso.load(mEpisode.getEpisodePhoto()).placeholder(R.drawable.bg).config(MizuuApplication.getBitmapConfig()).into(mEpisodePhoto, new Callback() {
#Override
public void onError() {
if (!isAdded())
return;
int width = getActivity().getResources().getDimensionPixelSize(R.dimen.episode_details_background_overlay_width);
int height = getActivity().getResources().getDimensionPixelSize(R.dimen.episode_details_background_overlay_height);
mPicasso.load(mEpisode.getTvShowBackdrop()).placeholder(R.drawable.bg).error(R.drawable.nobackdrop).resize(width, height).config(MizuuApplication.getBitmapConfig()).into(mEpisodePhoto);
}
#Override
public void onSuccess() {
if (mPaletteLoader == null) {
mPaletteLoader = new PaletteLoader(mPicasso, Uri.fromFile(mEpisode.getEpisodePhoto()), new PaletteLoader.OnPaletteLoadedCallback() {
#Override
public void onPaletteLoaded(int swatchColor) {
mToolbarColor = swatchColor;
}
});
mPaletteLoader.addView(mDetailsArea);
mPaletteLoader.setFab(mFab);
mPaletteLoader.execute();
} else {
// Clear old views after configuration change
mPaletteLoader.clearViews();
// Add views after configuration change
mPaletteLoader.addView(mDetailsArea);
mPaletteLoader.setFab(mFab);
// Re-color the views
mPaletteLoader.colorViews();
}
}
});
if (!MizLib.isPortrait(getActivity()))
mPicasso.load(mEpisode.getEpisodePhoto()).placeholder(R.drawable.bg).error(R.drawable.bg).transform(new BlurTransformation(getActivity().getApplicationContext(), mEpisode.getEpisodePhoto().getAbsolutePath() + "-blur", 4)).into(mBackdrop, new Callback() {
#Override public void onError() {
if (!isAdded())
return;
mPicasso.load(mEpisode.getTvShowBackdrop()).placeholder(R.drawable.bg).error(R.drawable.nobackdrop).transform(new BlurTransformation(getActivity().getApplicationContext(), mEpisode.getTvShowBackdrop().getAbsolutePath() + "-blur", 4)).into(mBackdrop, new Callback() {
#Override
public void onError() {}
#Override
public void onSuccess() {
if (!isAdded())
return;
mBackdrop.setColorFilter(Color.parseColor("#aa181818"), android.graphics.PorterDuff.Mode.SRC_OVER);
}
});
}
#Override
public void onSuccess() {
if (!isAdded())
return;
mBackdrop.setColorFilter(Color.parseColor("#aa181818"), android.graphics.PorterDuff.Mode.SRC_OVER);
}
});
}
#Override
public void onDetach() {
mCallback = null; // => avoid leaking, thanks #Deepscorn
super.onDetach();
}
private void loadData() {
// Set the episode title
mTitle.setVisibility(View.VISIBLE);
mTitle.setText(mEpisode.getTitle());
mTitle.setTypeface(mCondensedRegular);
mDescription.setTypeface(mCondensedRegular);
mFileSource.setTypeface(mCondensedRegular);
mDirector.setTypeface(mCondensedRegular);
mWriter.setTypeface(mCondensedRegular);
mGuestStars.setTypeface(mCondensedRegular);
mAirDate.setTypeface(mMedium);
mRating.setTypeface(mMedium);
mSeasonEpisodeNumber.setTypeface(mMediumItalic);
mSeasonEpisodeNumber.setText(getString(R.string.showSeason) + " " + mEpisode.getSeason() + ", " + getString(R.string.showEpisode) + " " + mEpisode.getEpisode());
// Set the movie plot
if (!MizLib.isPortrait(getActivity())) {
mDescription.setBackgroundResource(R.drawable.selectable_background);
mDescription.setMaxLines(getActivity().getResources().getInteger(R.integer.episode_details_max_lines));
mDescription.setTag(true); // true = collapsed
mDescription.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (((Boolean) mDescription.getTag())) {
mDescription.setMaxLines(1000);
mDescription.setTag(false);
} else {
mDescription.setMaxLines(getActivity().getResources().getInteger(R.integer.episode_details_max_lines));
mDescription.setTag(true);
}
}
});
mDescription.setEllipsize(TextUtils.TruncateAt.END);
mDescription.setFocusable(true);
} else {
if (MizLib.isTablet(getActivity()))
mDescription.setLineSpacing(0, 1.15f);
}
mDescription.setText(mEpisode.getDescription());
if (mShowFileLocation) {
mFileSource.setText(mEpisode.getAllFilepaths());
} else {
mFileSource.setVisibility(View.GONE);
}
// Set the episode air date
mAirDate.setText(MizLib.getPrettyDatePrecise(getActivity(), mEpisode.getReleasedate()));
// Set the movie rating
if (!mEpisode.getRating().equals("0.0")) {
try {
int rating = (int) (Double.parseDouble(mEpisode.getRating()) * 10);
mRating.setText(Html.fromHtml(rating + "<small> %</small>"));
} catch (NumberFormatException e) {
mRating.setText(mEpisode.getRating());
}
} else {
mRating.setText(R.string.stringNA);
}
if (TextUtils.isEmpty(mEpisode.getDirector()) || mEpisode.getDirector().equals(getString(R.string.stringNA))) {
mDirector.setVisibility(View.GONE);
} else {
mDirector.setText(mEpisode.getDirector());
}
if (TextUtils.isEmpty(mEpisode.getWriter()) || mEpisode.getWriter().equals(getString(R.string.stringNA))) {
mWriter.setVisibility(View.GONE);
} else {
mWriter.setText(mEpisode.getWriter());
}
if (TextUtils.isEmpty(mEpisode.getGuestStars()) || mEpisode.getGuestStars().equals(getString(R.string.stringNA))) {
mGuestStars.setVisibility(View.GONE);
} else {
mGuestStars.setText(mEpisode.getGuestStars());
}
}
Rest of the code
}
Activity
public class TvShowEpisodeDetails extends MizActivity implements TvShowEpisodeDetailsFragment.TextClicked{
private static final String SHOW_ID = "showId";
private ArrayList<TvShowEpisode> mEpisodes = new ArrayList<TvShowEpisode>();
private int mSeason, mEpisode;
private String mShowId, mShowTitle;
private ViewPager mViewPager;
private DbAdapterTvShowEpisodes mDatabaseHelper;
private Bus mBus;
#Override
protected int getLayoutResource() {
return R.layout.viewpager_with_toolbar_overlay;
}
#Override
public void onCreate(Bundle savedInstanceState) {
mBus = MizuuApplication.getBus();
super.onCreate(savedInstanceState);
// Set theme
setTheme(R.style.Mizuu_Theme_NoBackground);
ViewUtils.setupWindowFlagsForStatusbarOverlay(getWindow(), true);
ViewUtils.setProperToolbarSize(this, mToolbar);
mShowId = getIntent().getExtras().getString(SHOW_ID);
mSeason = getIntent().getExtras().getInt("season");
mEpisode = getIntent().getExtras().getInt("episode");
mDatabaseHelper = MizuuApplication.getTvEpisodeDbAdapter();
Cursor cursor = mDatabaseHelper.getEpisodes(mShowId);
try {
while (cursor.moveToNext()) {
mEpisodes.add(new TvShowEpisode(this, mShowId,
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_TITLE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_PLOT)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SEASON)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_AIRDATE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_DIRECTOR)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_WRITER)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_GUESTSTARS)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_RATING)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_HAS_WATCHED)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_FAVOURITE))
));
}
} catch (Exception e) {
} finally {
cursor.close();
}
final ArrayList<PlanetModel> episodeslist = new ArrayList<>();
for(TvShowEpisode e : mEpisodes){
episodeslist.add(new PlanetModel(e.mEpisode));
}
mShowTitle = MizuuApplication.getTvDbAdapter().getShowTitle(mShowId);
setTitle(mShowTitle);
mViewPager = (ViewPager) findViewById(R.id.awesomepager);
mViewPager.setAdapter(new TvShowEpisodeDetailsAdapter(getSupportFragmentManager()));
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
for (int i=0; i<episodeslist.size(); i++)
{
episodeslist.get(i).setPlanetSelected(false);
}
episodeslist.get(position).setPlanetSelected(true);
//notify your recycler views adaper
ViewUtils.updateToolbarBackground(TvShowEpisodeDetails.this, mToolbar, 0, mEpisodes.get(position).getTitle(), Color.TRANSPARENT);
}
});
if (savedInstanceState != null) {
mViewPager.setCurrentItem(savedInstanceState.getInt("tab", 0));
} else {
for (int i = 0; i < mEpisodes.size(); i++) {
if (mEpisodes.get(i).getSeason().equals(MizLib.addIndexZero(mSeason)) && mEpisodes.get(i).getEpisode().equals(MizLib.addIndexZero(mEpisode))) {
mViewPager.setCurrentItem(i);
SharedPreferences setPref = this.getSharedPreferences("TvShowEpisodeDetails", Context.MODE_PRIVATE);
setPref.edit().putInt("i", i).apply();
break;
}
}
}
}
#Subscribe
public void onScrollChanged(TvShowEpisodeDetailsFragment.BusToolbarColorObject object) {
ViewUtils.updateToolbarBackground(this, mToolbar, object.getAlpha(),
mEpisodes.get(mViewPager.getCurrentItem()).getTitle(), object.getToolbarColor());
}
public void onResume() {
super.onResume();
mBus.register(this);
ViewUtils.updateToolbarBackground(this, mToolbar, 0, mShowTitle, Color.TRANSPARENT);
}
#Override
public void onPause() {
super.onPause();
mBus.unregister(this);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public void onStart() {
super.onStart();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("tab", mViewPager.getCurrentItem());
}
#Override
public void sendText(int position) {
mViewPager.setCurrentItem(position,false);
//Toast.makeText(getContext(), "Item Clicked " + text, Toast.LENGTH_SHORT).show();
}
private class TvShowEpisodeDetailsAdapter extends FragmentPagerAdapter {
public TvShowEpisodeDetailsAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int index) {
return TvShowEpisodeDetailsFragment.newInstance(mShowId, Integer.parseInt(mEpisodes.get(index).getSeason()), Integer.parseInt(mEpisodes.get(index).getEpisode()));
}
#Override
public int getCount() {
return mEpisodes.size();
}
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 0) {
if (resultCode == Activity.RESULT_OK) {
setResult(Activity.RESULT_OK);
finish();
}
}
}
}
Yes, a Viewpager can be setup in a Fragment.
You just need to get the right FragmentManager when constructing it i.e use getChildFragmentManager() in mViewPager.setAdapter(new TvShowEpisodeDetailsAdapter(getSupportFragmentManager()));
From https://developer.android.com/guide/fragments/fragmentmanager
Access the FragmentManager
Accessing in an activity
Every FragmentActivity and subclasses thereof, such as
AppCompatActivity, have access to the FragmentManager through the
getSupportFragmentManager() method.
Accessing in a Fragment
Fragments are also capable of hosting one or more child fragments.
Inside a fragment, you can get a reference to the FragmentManager that
manages the fragment's children through getChildFragmentManager().
The application's PagerAdapter changed the adapter's contents without calling PagerAdapter#notifyDataSetChanged! Expected adapter item count: 0, found: 3 Pager
id
I have this error in my Android project. Here I am using a view pager for that. I got images from webservices as byte code.
public class MainActivity extends AppCompatActivity {
private String TAG = MainActivity.class.getSimpleName();
private ProgressDialog pDialog;
ArrayList<String> alListImage;
private static ViewPager mPager;
private static int currentPage = 0;
private static int NUM_PAGES = 0;
private static final Integer[] IMAGES= {R.drawable.one,R.drawable.two,R.drawable.three,R.drawable.one,R.drawable.two,R.drawable.three,};
private ArrayList<String> ImagesArray = new ArrayList<String>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
alListImage=new ArrayList<String>();
new GetContacts().execute();
init();
}
private void init() {
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(new Adapter(MainActivity.this,alListImage));
// Auto start of viewpager
final Handler handler = new Handler();
final Runnable Update = new Runnable() {
public void run() {
if (currentPage == alListImage.size()) {
currentPage = 0;
}
mPager.setCurrentItem(currentPage++, true);
}
};
Timer swipeTimer = new Timer();
swipeTimer.schedule(new TimerTask() {
#Override
public void run() {
handler.post(Update);
}
}, 3000, 3000);
}
private class GetContacts extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... arg0) {
HttpHandler sh = new HttpHandler();
String url = "http://webapirestro.appro.com.sg/api/Category/GetCategory?CompanyId=771416A2-56C6-46A5-8EB5-655E4361A22A";
//String url = "http://webapirestro.appro.com.sg/api/TvImage/Gettv_image?CompanyId=771416A2-56C6-46A5-8EB5-655E4361A22A";
// Making a request to URL and getting response
final String jsonStr = sh.makeServiceCall(url);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
JSONArray ListData = jsonObj.getJSONArray("ListData");
// Looping through All Contacts
for (int i = 0; i < ListData.length(); i++) {
JSONObject c = ListData.getJSONObject(i);
String sImageByte = c.getString("ImageByte");
String sCatname = c.getString("CategoryName");
if(sImageByte.equals(false)){
sImageByte = "ABC";
}
// Adding contact to contact list
alListImage.add(sImageByte);
}
}
catch (final JSONException e) {
Log.e(TAG, "JSON parsing error: " + e.getMessage());
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Json parsing error: " + e.getMessage(),
Toast.LENGTH_LONG)
.show();
}
});
}
}
else {
Log.e(TAG, "Couldn't get json from server.");
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Couldn't get json from server. Check LogCat for possible errors!",
Toast.LENGTH_LONG)
.show();
}
});
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
/**
* Updating parsed JSON data into ListView
* */
}
}
}
public class Adapter extends PagerAdapter {
private ArrayList<String> IMAGES;
private LayoutInflater inflater;
private Context context;
public Adapter(Context context,ArrayList<String> IMAGES) {
this.context = context;
this.IMAGES=IMAGES;
inflater = LayoutInflater.from(context);
notifyDataSetChanged();
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
#Override
public int getCount() {
return IMAGES.size();
}
#Override
public Object instantiateItem(ViewGroup view, int position) {
View imageLayout = inflater.inflate(R.layout.single_pager, view, false);
assert imageLayout != null;
final ImageView imageView = (ImageView) imageLayout
.findViewById(R.id.image);
for(int i=0;i<IMAGES.size();i++) {
byte[] decode = Base64.decode(IMAGES.get(i), Base64.DEFAULT);
Bitmap bitmap = BitmapFactory.decodeByteArray(decode, 0, decode.length);
imageView.setImageBitmap(bitmap);
}
view.addView(imageLayout, 0);
return imageLayout;
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view.equals(object);
}
#Override
public void restoreState(Parcelable state, ClassLoader loader) {
}
#Override
public Parcelable saveState() {
return null;
}
}
GetContacts is an AsyncTask and in its doInBackground method, you put in this line:
alListImage.add(sImageByte); // This makes the adapter item number equal to 3
To avoid it, you could execute GetContacts after some time using postDelayed.
I am trying to fetch some data from parse, but my app is getting crashed every time due to this error: java.lang.IndexOutOfBoundsException: Invalid index 1, size is 0 at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255) at java.util.ArrayList.get(ArrayList.java:308) at com.abc.xyz.AcceptARequest$1$1.done(AcceptARequest.java:157)
Here's AcceptARequest.java(in which I'm fetching data from parse) file's code :
public class AcceptARequest extends Fragment{
private OnFragmentInteractionListener mListener;
public List<ListContentAAR> listContentAARs;
public RecyclerView recyclerView;
ImageView hPicAccept;
TextView hDescriptionAccept, currentCoordinatesTagAccept, currentLatAccept, currentLngAccept, post_date, post_time, posted_by;
String hDescriptionAcceptS, currentCoordinatesTagAcceptS, currentLatAcceptS, currentLngAcceptS, post_dateS, post_timeS, posted_byS;
Button btn_accept, btn_share;
LinearLayout latContainerAccept, lngContainerAccept, dateTimeContainer;
ParseQuery<ParseObject> query;
String hDescription, cLat, cLng;
public AcceptARequest() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_accept_a_request, container, false);
listContentAARs = new ArrayList<>();
hPicAccept = (ImageView) rootView.findViewById(R.id.h_pic_accept);
hDescriptionAccept = (TextView) rootView.findViewById(R.id.h_description_accept);
currentCoordinatesTagAccept = (TextView) rootView.findViewById(R.id.currentCoordinatesTagAccept);
currentLatAccept = (TextView) rootView.findViewById(R.id.currentLatAccept);
currentLngAccept = (TextView) rootView.findViewById(R.id.currentLngAccept);
btn_accept = (Button) rootView.findViewById(R.id.btn_accept);
btn_share = (Button) rootView.findViewById(R.id.btn_share);
latContainerAccept = (LinearLayout) rootView.findViewById(R.id.latContainerAccept);
lngContainerAccept = (LinearLayout) rootView.findViewById(R.id.lngContainerAccept);
dateTimeContainer = (LinearLayout) rootView.findViewById(R.id.date_time_container);
post_date = (TextView) rootView.findViewById(R.id.post_date);
post_time = (TextView) rootView.findViewById(R.id.post_time);
posted_by = (TextView) rootView.findViewById(R.id.posted_by);
hDescriptionAcceptS = hDescriptionAccept.getText().toString();
currentCoordinatesTagAcceptS = currentCoordinatesTagAccept.getText().toString();
currentLatAcceptS = currentLatAccept.getText().toString();
currentLngAcceptS = currentLngAccept.getText().toString();
post_dateS = post_date.getText().toString();
post_timeS = post_time.getText().toString();
posted_byS = posted_by.getText().toString();
currentCoordinatesTagAccept.setVisibility(View.INVISIBLE);
currentLatAccept.setVisibility(View.INVISIBLE);
currentLngAccept.setVisibility(View.INVISIBLE);
latContainerAccept.setVisibility(View.INVISIBLE);
lngContainerAccept.setVisibility(View.INVISIBLE);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
query = ParseQuery.getQuery("HomelessDetails");
query.whereEqualTo("objectId", ParseUser.getCurrentUser().getObjectId());
query.addDescendingOrder("createdAt");
query.findInBackground(new FindCallback<ParseObject>() {
#Override
public void done(List<ParseObject> list, ParseException e) {
if (e == null) {
currentCoordinatesTagAccept.setVisibility(View.VISIBLE);
currentLatAccept.setVisibility(View.VISIBLE);
currentLngAccept.setVisibility(View.VISIBLE);
latContainerAccept.setVisibility(View.VISIBLE);
lngContainerAccept.setVisibility(View.VISIBLE);
hDescriptionAcceptS = list.get(1).getString("hDescription");
hDescriptionAccept.setText(hDescriptionAcceptS);
currentLatAcceptS = list.get(1).getString("hLatitude");
currentLatAccept.setText(currentLatAcceptS);
currentLngAcceptS = list.get(1).getString("hLongitude");
currentLngAccept.setText(currentLngAcceptS);
} else {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(e.getMessage());
builder.setPositiveButton(android.R.string.ok, null);
AlertDialog dialog = builder.create();
dialog.show();
}
}
});
}
}, 1000);
recyclerView = (RecyclerView) rootView.findViewById(R.id.accept_request_list);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setHasFixedSize(true);
recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
Button btnAccept = (Button) view.findViewById(R.id.btn_accept);
btnAccept.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(R.string.request_accepted_txt);
builder.setPositiveButton("Navigate me", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(getActivity(), "Navigating you to the needy...", Toast.LENGTH_LONG).show();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(getActivity(), "The help-request has been rejected.", Toast.LENGTH_LONG).show();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
});
Button btnShare = (Button) view.findViewById(R.id.btn_share);
btnShare.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// share the help-request here.
}
});
}
#Override
public void onLongClick(View view, int position) {
}
}));
initializeAdapter();
return rootView;
}
private void initializeAdapter(){
RVAdapterAAR adapter = new RVAdapterAAR(listContentAARs);
recyclerView.setAdapter(adapter);
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
public void itemClicked(View view, int position) {
}
class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener(){
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
super.onLongPress(e);
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
public static interface ClickListener {
public void onClick(View view, int position);
public void onLongClick(View view, int position);
}
#Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
I don't know what's going wrong here.
Please let me know.
Please cooperate if question seems to be badly formatted, I'm still learning to post good questions.
You are trying to access the ArrayList which does not have any element in it. SO list.get(1) won't work.
Make sure that your ArrayList is getting populated correctly.
#Hammad:
The error that you are getting is because of the array list that you are using does not contain any elements/objects in it.
You need to populate the arraylist using list.Add()(or based on your preference) method.
I am using NavigationDrawer and replace fragments like this:
ft.setCustomAnimations(
android.R.anim.slide_in_left, android.R.anim.slide_out_right
);
ft.replace(container, fragment);
// Start the animated transition.
ft.commit();
When Application start and First fragment is loaded, allocation heap is ~15 MB.
After I replace first fragment with second and doing some work, allocation heap ~40MB.
Then I replace second fragment with third, allocation heap maintains at ~40MB ( if force garbage collection) allocation heap decreases by ~7 mb.
If, I will not load second fragment and will go to third from first, allocation heap will maintain at ~17 MB.
Is second fragment destroyed at all, and if it is destroyed, why memmory is not freed?
As I understand without addToBackStack() fragments are not added to back stack and should be destroyed after removing ( as replace call remove and add)
Second fragment is basicly a listview
public class ArtistListFragment extends Fragment {
private FragmentArtistAdapter adapter;
private static final List<ArtistsEntity> articles = new ArrayList<>();
private GetAdds feed = new GetAdds();
private GridView list;
private String request = "new";
private ToggleButton tbLeft;
private ToggleButton tbRight;
private ToggleButton tbAbc;
public ArtistListFragment() {
// Required empty public constructor
}
private Tracker t;
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
t = ((UILApplication) getActivity().getApplication()).getTracker();
t.setScreenName("Artist List Screen");
t.send(new HitBuilders.EventBuilder()
.setCategory("Open Screen")
.build());
t.send(new HitBuilders.EventBuilder()
.setCategory("view")
.setAction("choose")
.setLabel("new")
.build());
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_artist_list, container, false);
setSwipeLayout(view);
eVideoScroll.resetState();
adapter = new FragmentArtistAdapter(getActivity(), articles);
list = (GridView) view.findViewById(R.id.gridview);
tbLeft = (ToggleButton) view.findViewById(R.id.tb_left);
tbRight = (ToggleButton) view.findViewById(R.id.tb_right);
tbAbc = (ToggleButton) view.findViewById(R.id.tb_abc);
tbLeft.setOnCheckedChangeListener(leftListener);
tbRight.setOnCheckedChangeListener(rightListener);
tbAbc.setOnCheckedChangeListener(abcListener);
tbLeft.setClickable(false);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
BusProvider.getInstance().post(new OpenArtistInfo(
articles.get(position)
.getSlug()));
}
});
feed = new GetAdds();
feed.execute();
list.setOnScrollListener(eVideoScroll);
return view;
}
private SwipeRefreshLayout swipeLayout;
private void setSwipeLayout(View view) {
swipeLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_container);
swipeLayout.setOnRefreshListener(refreshPage);
swipeLayout.setColorSchemeResources(android.R.color.holo_blue_bright,
android.R.color.holo_green_light,
android.R.color.holo_orange_light,
android.R.color.holo_red_light);
}
private final SwipeRefreshLayout.OnRefreshListener refreshPage = new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
new ResetVideoSelection().execute();
}
};
boolean checkInternetConnection() {
ConnectivityManager cm = (ConnectivityManager) getActivity()
.getSystemService(Context.CONNECTIVITY_SERVICE);
// test for connection
if (cm.getActiveNetworkInfo() != null
&& cm.getActiveNetworkInfo().isAvailable()
&& cm.getActiveNetworkInfo().isConnected()) {
return true;
} else {
AlertDialog alertDialog = new AlertDialog.Builder(getActivity()).create();
alertDialog.setTitle(getString(R.string.no_internet_conection));
alertDialog
.setMessage(getString(R.string.open_network_settings));
alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, getString(R.string.yes_response),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(
Settings.ACTION_WIRELESS_SETTINGS);
startActivity(intent);
}
});
alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE, getString(R.string.no_response),
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialog.setIcon(R.drawable.ic_launcher);
alertDialog.show();
return false;
}
}
void emptyResultDialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(ErrorMessage.INSTANCE.getErrorMessage())
.setCancelable(false)
.setPositiveButton(R.string.close_response,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
});
Dialog dialog = builder.create();
dialog.show();
}
private class GetAdds extends AsyncTask<Void, Void, List<ArtistsEntity>> {
#Override
protected void onPreExecute() {
if (!checkInternetConnection()) {
swipeLayout.setRefreshing(true);
cancel(true);
eVideoScroll.loading = false;
} else {
if (!swipeLayout.isRefreshing())
swipeLayout.setRefreshing(true);
}
}
#Override
protected List<ArtistsEntity> doInBackground(Void... params) {
int trial = 0;
MaterialRequest jParse = new MaterialRequest();
List<ArtistsEntity> result = null;
int page = PaggingData.INSTANCE.artistListCurrentPage + 1;
while (result == null && trial < 5 && !isCancelled()) {
trial++;
result = jParse.getArtists(request, page);
}
return result;
}
#Override
protected void onPostExecute(List<ArtistsEntity> result) {
super.onPostExecute(result);
if (result != null && result.size() > 0) {
if (PaggingData.INSTANCE.artistListCurrentPage <= 1)
articles.clear();
articles.addAll(result);
adapter.notifyDataSetChanged();
} else
emptyResultDialog();
eVideoScroll.loading = false;
swipeLayout.setRefreshing(false);
}
}
private final CompoundButton.OnCheckedChangeListener leftListener = new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
request = "new";
new ResetVideoSelection().execute();
tbRight.setChecked(false);
tbAbc.setChecked(false);
tbLeft.setClickable(false);
t.send(new HitBuilders.EventBuilder()
.setCategory("view")
.setAction("choose")
.setLabel("new")
.build());
} else {
tbLeft.setClickable(true);
}
}
};
private final CompoundButton.OnCheckedChangeListener rightListener = new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
request = "popular";
new ResetVideoSelection().execute();
tbLeft.setChecked(false);
tbAbc.setChecked(false);
tbRight.setClickable(false);
t.send(new HitBuilders.EventBuilder()
.setCategory("view")
.setAction("choose")
.setLabel("popular")
.build());
} else {
tbRight.setClickable(true);
}
}
};
private final CompoundButton.OnCheckedChangeListener abcListener = new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
request = "abc";
new ResetVideoSelection().execute();
tbRight.setChecked(false);
tbLeft.setChecked(false);
tbAbc.setClickable(false);
t.send(new HitBuilders.EventBuilder()
.setCategory("view")
.setAction("choose")
.setLabel("abc")
.build());
} else {
tbAbc.setClickable(true);
}
}
};
private class ResetVideoSelection extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
eVideoScroll.resetState();
list.setSelection(0);
}
#Override
protected Void doInBackground(Void... params) {
// if (videoArticles.size() > 0)
// while (listVideo.getSelectedItemPosition() != 0) {
//
// }
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
feed = new GetAdds();
feed.execute();
}
}
private final EndlessVideoScrollListener eVideoScroll = new EndlessVideoScrollListener();
private class EndlessVideoScrollListener implements AbsListView.OnScrollListener {
private int visibleThreshold = 5;
private int previousTotal = 0;
private boolean loading = true;
public void resetState() {
visibleThreshold = 5;
previousTotal = 0;
loading = true;
PaggingData.INSTANCE.artistListPages = 0;
PaggingData.INSTANCE.artistListCurrentPage = 0;
}
public EndlessVideoScrollListener() {
}
public EndlessVideoScrollListener(int visibleThreshold) {
this.visibleThreshold = visibleThreshold;
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
if (loading) {
if (totalItemCount > previousTotal) {
// loading = false;
previousTotal = totalItemCount;
}
}
if (!loading
&& (totalItemCount - visibleItemCount) <= (firstVisibleItem + visibleThreshold)) {
// I load the next page of gigs using a background task,
// but you can call any function here.
if (PaggingData.INSTANCE.artistListCurrentPage + 1 <= PaggingData.INSTANCE.artistListPages) {
feed = new GetAdds();
feed.execute();
loading = true;
}
}
}
#Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
}
#Override
public void onPause() {
super.onPause();
feed.cancel(true);
swipeLayout.setRefreshing(false);
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((NavigationDrawerActivity) activity).onSectionAttached(getArguments().getString("title"));
}
}
Indeed, Fragments are destroyed and created anew as they shift in and out of view (unlike Activitys), provided addToBackStack() is not used.
I suspect that
1. You have set android:largeHeap = true in your app manifest.
2. Your Fragments are possibly making use of heavy ImageViews / VideoViews or cached Bitmaps with static references, which can also be a cause of unrestricted heap growth.
These are some reasons off the top of my head that I can think of in a situation like this.
A search api is returning me some meta data along with a URL "eventURL". I am placing the data in the listview, each row containing some data and a unique URL.I want when the user taps on the row in the listview,that unique URL should open in a webview.I have created a WebViewActivity for it,I am having issue with implementing the onClickListener.
MainActivity
public class MainActivity extends Activity {
//private EditText m_search_text;
private EditText m_zip;
private ListView m_search_results;
private Button m_search_btn;
private JSONArray m_results;
private LayoutInflater m_inflater;
private InputMethodManager m_ctrl;
private Spinner m_radius;
private Spinner m_activity_selector;
public static int radius = 0;
public static String activities;
static final private int EXIT_ID = Menu.FIRST;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// m_search_text = (EditText) findViewById(R.id.search_text);
m_zip = (EditText) findViewById(R.id.zip);
m_search_btn = (Button) findViewById(R.id.search_button);
// m_search_results = (ListView) findViewById(R.id.lview);
m_search_btn .setOnClickListener(go_handler);
m_ctrl = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
m_inflater = LayoutInflater.from(this);
addListenerOnSpinnerItemSelection();
addListenerOnSpinner1ItemSelection();
m_search_results = (ListView)findViewById(R.id.lview);
}
public void addListenerOnSpinnerItemSelection() {
m_radius = (Spinner) findViewById(R.id.spinner);
m_radius.setOnItemSelectedListener(new CustomOnItemSelectedListener());
}
public void addListenerOnSpinner1ItemSelection(){
m_activity_selector = (Spinner) findViewById(R.id.spinner1);
m_activity_selector.setOnItemSelectedListener(new ActivitySelectedListener());
}
#Override
public boolean onCreateOptionsMenu(Menu menu){
super.onCreateOptionsMenu(menu);
menu.add(0, EXIT_ID, 0, R.string.exit);
return true;
}
#Override
public boolean onOptionsItemSelected (MenuItem item){
switch (item.getItemId()){
case EXIT_ID:
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
OnClickListener go_handler = new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
m_ctrl.hideSoftInputFromWindow(m_zip.getWindowToken(), 0);
//String searchText = Uri.encode(m_search_text.getText().toString());
String zip = Uri.encode(m_zip.getText().toString());
new SearchTask().execute("?k=Fall+Classic" + "&m=meta:channel=" + activities + "&l="+ zip + "&r=" + radius);
// Show a toast showing the search text
Toast.makeText(getApplicationContext(),
getString(R.string.search_msg) + " " +
activities, Toast.LENGTH_LONG).show();
}
};
private class SearchTask extends AsyncTask<String, Integer, String>
{
ProgressDialog dialog;
#Override
protected void onPreExecute() {
dialog = ProgressDialog.show(MainActivity.this,"","Please Wait...");
super.onPreExecute();
}
#Override
protected String doInBackground(String... params) {
try {
String result = ActiveHelper.download(params [0]);
return result;
} catch (ApiException e) {
e.printStackTrace();
Log.e("alatta", "Problem making search request");
}
return "";
}
#Override
protected void onPostExecute(String result) {
dialog.hide();
try {
JSONObject obj = new JSONObject(result);
m_results = obj.getJSONArray("_results");
if (m_results == null ||m_results.length() == 0)
{
Toast.makeText(getApplicationContext(),
"No Results found for " + activities,
Toast.LENGTH_LONG).show();
}
else
m_search_results.setAdapter(new JSONAdapter(getApplicationContext()));
} catch (JSONException e) {
e.printStackTrace();
}
}
}
private class JSONAdapter extends BaseAdapter
{
public JSONAdapter(Context c){
}
public int getCount()
{
return m_results.length();
}
public Object getItem(int arg0){
return null;
}
public long getItemId(int pos){
return pos;
}
public View getView(int pos, View convertView, ViewGroup parent) {
View tv;
TextView t;
if (convertView == null)
tv = m_inflater.inflate (R.layout.item, parent, false);
else
tv = convertView;
try {
/* For each entry in the ListView, we need to populate
* its text and timestamp */
t = (TextView) tv.findViewById(R.id.text);
JSONObject obj = m_results.getJSONObject(pos);
t.setText (obj.getString("title").replaceAll("\\<.*?\\>", ""));
t = (TextView) tv.findViewById(R.id.created_at);
JSONObject meta = obj.getJSONObject("meta");
t.setText ("When:" + "\t"+meta.getString("startDate")+"\n"+"Location:" +"\t" +meta.getString("location")+"\n" +"More Info:"+"\t" +meta.getString("eventURL")+"\n");
} catch (JSONException e) {
Log.e("alatta", e.getMessage());
}
return tv;
}
}}
WebViewActivity
public class WebViewActivity extends MainActivity {
private WebView webView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
webView = (WebView) findViewById(R.id.webView);
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("url");
}}
Thanks.
You need to use OnItemClickListener:
MainActivity implements OnItemClickListener {
onCreate() {
m_search_results.setOnItemClickListener(this);
Make this method:
onItemClick(AdapterView<?> parent, View view, int position, long id) {
url = JSON.getHowever(position);
//get the intent, load the url, and launch the activity
}
You also need to handle the intent in your WebViewActivity, but that's beside the question