Can't change the value of integer variable - java

#RequiresApi(api = Build.VERSION_CODES.O)
public class MainActivity extends AppCompatActivity {
TextSwitcher textSwitcherage, textSwitcherGender;
Button nextButton, previousButton, nextButton2, previousButton2;
String[] age = {"U-4","Kid","Teen","Adult","Old"};
String[] gender = {"Male","Female","Other"};
TextView textView;
Typeface typeface;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
defVars();
}
public void defVars()
{
textSwitcherGender = findViewById(R.id.textSwitcherGender);
textSwitcherage = findViewById(R.id.textSwitcherage);
nextButton = findViewById(R.id.nextButton1);
nextButton2 = findViewById(R.id.nextButton2);
previousButton = findViewById(R.id.previousButton1);
previousButton2 = findViewById(R.id.previousButton2);
typeface = getResources().getFont(R.font.lettersforlearners);
nextAndPreviousButtons(nextButton,previousButton,textSwitcherage,age,0);
nextAndPreviousButtons(nextButton2, previousButton2, textSwitcherGender, gender,0);
}
public void nextAndPreviousButtons(Button buttonNext, Button buttonPrevious, final TextSwitcher textSwitcher, final String[] data, final Integer stringIndex)
{
buttonNext.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(stringIndex == data.length - 1)
{
stringIndex = 0;
textSwitcher.setText(data[stringIndex]);
}
else
{
textSwitcher.setText(data[++stringIndex]);
}
}
});
buttonPrevious.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(stringIndex==0)
{
stringIndex = data.length-1;
textSwitcher.setText(data[stringIndex]);
}
else
{
textSwitcher.setText(data[--stringIndex]);
}
}
});
textSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
#Override
public View makeView() {
textView = new TextView(MainActivity.this);
textView.setTypeface(typeface);
textView.setTextColor(Color.BLACK);
textView.setTextSize(40);
textView.setGravity(Gravity.CENTER_HORIZONTAL);
return textView;
}
});
textSwitcher.setText(data[stringIndex]);
}
}
I have an error:
"error: cannot assign a value to final variable stringIndex"
I set the stringIndex final but still got that problem. I don't know. Am i have to define Integer variables for stringIndex? Or should I delete the stringIndex final? I need to define separate stringIndex variables for each function


if you declare final Integer stringIndex... then you are done! that is the idea and meaning of the reserved word final... is an object you cannot re assign after...
public void nextAndPreviousButtons(Button buttonNext, Button buttonPrevious,
final TextSwitcher textSwitcher, final String[] data, Integer stringIndex)


You don't have to modify stringIndex
public void nextAndPreviousButtons(Button buttonNext, Button buttonPrevious, final TextSwitcher textSwitcher, final String[] data, final Integer stringIndex)
{
buttonNext.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(stringIndex == data.length - 1)
{
textSwitcher.setText(data[0]);
}
else
{
textSwitcher.setText(data[stringIndex+1]);
}
}
});
buttonPrevious.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(stringIndex==0)
{
textSwitcher.setText(data[data.length-1]);
}
else
{
textSwitcher.setText(data[stringIndex-1]);
}
}
});
textSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
#Override
public View makeView() {
textView = new TextView(MainActivity.this);
textView.setTypeface(typeface);
textView.setTextColor(Color.BLACK);
textView.setTextSize(40);
textView.setGravity(Gravity.CENTER_HORIZONTAL);
return textView;
}
});
textSwitcher.setText(data[stringIndex]);

Related

Is it possible to set ViewPager inside a fragment class?

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().

on back pressed I want to go previous activity from adapter

I have an activity which is connected with an adapter. In the activity, I include adapter layout. when I click on the button than adapter layout open but when I press back button in adapter layout than automatically reached main activity. I want that when I press back button in adapter than go to previous activity.
activity code is below
public class TestFragment extends Fragment {
private Button btnA,
btnB,
btnC,
btnD,
btnSubmit,
btnNext,
btnPrev,
btnFlag;
private TextView tvQuestion,
tvLayout;
private int totalItem;
private int listItem = 0;
private ArrayList < mcqQuestion > quesList = new ArrayList < >();
private int score = 0;
private boolean isLoading = true;
private RelativeLayout rlMcqProgress;
private FirebaseAuth mAuth;
private boolean allAnswered = false;
private RecyclerView rvQuesLayout;
private RecyclerView.LayoutManager layoutManager;
private QuestionLayoutRecyclerAdapter adapter;
private LinearLayout llQuestionAll;
private FirebaseDatabase database = FirebaseDatabase.getInstance();
private DatabaseReference myRef = database.getReference("tax").child("Questions");
public TestFragment() {
// Required empty public constructor
}#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_test, container, false);
btnA = view.findViewById(R.id.btn_mcq_A);
btnB = view.findViewById(R.id.btn_mcq_B);
btnC = view.findViewById(R.id.btn_mcq_C);
btnD = view.findViewById(R.id.btn_mcq_D);
btnSubmit = view.findViewById(R.id.btn_mcq_submit);
btnNext = view.findViewById(R.id.btn_mcq_next);
btnPrev = view.findViewById(R.id.btn_mcq_prev);
btnFlag = view.findViewById(R.id.btn_mcq_flag);
tvQuestion = view.findViewById(R.id.tv_mcq_question);
tvLayout = view.findViewById(R.id.tv_mcq_question_layout);
rvQuesLayout = view.findViewById(R.id.rv_layout_question_test);
rlMcqProgress = view.findViewById(R.id.rl_mcq_progress);
rlMcqProgress.setVisibility(View.VISIBLE);
llQuestionAll = view.findViewById(R.id.ll_test_all);
mAuth = FirebaseAuth.getInstance();
getFData();
btnA.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
quesList.get(listItem).setSelAnswer("optA");
setButtonColor();
btnA.setBackgroundResource(R.color.sky_blue);
}
});
btnB.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
quesList.get(listItem).setSelAnswer("optB");
setButtonColor();
btnB.setBackgroundResource(R.color.sky_blue);
}
});
btnC.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
quesList.get(listItem).setSelAnswer("optC");
setButtonColor();
btnC.setBackgroundResource(R.color.sky_blue);
}
});
btnD.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
quesList.get(listItem).setSelAnswer("optD");
setButtonColor();
btnD.setBackgroundResource(R.color.sky_blue);
}
});
btnFlag.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
setFlagValue();
setFlagColor();
}
});
tvLayout.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
adapter.notifyDataSetChanged();
if (rvQuesLayout.getVisibility() == View.GONE || rvQuesLayout.getVisibility() == View.INVISIBLE) {
rvQuesLayout.setVisibility(View.VISIBLE);
llQuestionAll.setVisibility(View.GONE);
} else {
rvQuesLayout.setVisibility(View.GONE);
llQuestionAll.setVisibility(View.VISIBLE);
}
}
});
btnNext.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
displayNextQues();
}
});
btnPrev.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
displayPrevQues();
}
});
btnSubmit.setOnClickListener(new View.OnClickListener() {#SuppressLint("SetTextI18n")#Override
public void onClick(View v) {
for (int i = 0; i < totalItem; i++) {
if (quesList.get(i).getSelAnswer().equals("none")) {
allAnswered = false;
score++;
break;
} else {
if (quesList.get(i).getSelAnswer().equals(quesList.get(i).getAnswer())) {
score++;
}
allAnswered = true;
}
}
if (allAnswered) {
Intent intent = new Intent(this, finalresult.class);
intent.putExtra("score", score);
intent.putExtra("questions", totalItem);
startActivity(intent);
} else {
Toast.makeText(this, "Answer all the questions", Toast.LENGTH_SHORT).show();
}
}
});
return view;
}
private void makeRecyclerView() {
layoutManager = new LinearLayoutManager(this);
//rvQuesLayout.setHasFixedSize(true);
rvQuesLayout.setLayoutManager(layoutManager);
adapter = new QuestionLayoutRecyclerAdapter(quesList);
rvQuesLayout.setAdapter(adapter);
adapter.setOnItemClickListner(new QuestionLayoutRecyclerAdapter.onItemClickListner() {#Override
public void onClick(int pos) {
listItem = pos;
if (listItem >= 0 && listItem < totalItem) {
makeAllDisplay();
rvQuesLayout.setVisibility(View.GONE);
llQuestionAll.setVisibility(View.VISIBLE);
}
}
});
}
private void setDisplay(int item) {
btnA.setText(quesList.get(item).getOptA());
btnB.setText(quesList.get(item).getOptB());
btnC.setText(quesList.get(item).getOptC());
btnD.setText(quesList.get(item).getOptD());
tvQuestion.setText(quesList.get(item).getQuestion());
}
private void getFData() {
myRef.addValueEventListener(new ValueEventListener() {#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
for (DataSnapshot messageSnapshot: dataSnapshot.getChildren()) {
String qtext = (String) messageSnapshot.child("qText").getValue();
String optA = (String) messageSnapshot.child("optA").getValue();
String optB = (String) messageSnapshot.child("optB").getValue();
String optC = (String) messageSnapshot.child("optC").getValue();
String optD = (String) messageSnapshot.child("optD").getValue();
String answer = (String) messageSnapshot.child("answer").getValue();
quesList.add(new mcqQuestion(qtext, optA, optB, optC, optD, answer, "none", false));
Log.d("TOTAL ITEM", String.valueOf(quesList.size()));
}
totalItem = quesList.size();
isLoading = false;
if (!isLoading) {
setDisplay(listItem);
rlMcqProgress.setVisibility(View.GONE);
tvLayout.setVisibility(View.VISIBLE);
}
makeRecyclerView();
}#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
private void setFlagValue() {
if (quesList.get(listItem).isFlag()) {
quesList.get(listItem).setFlag(false);
} else {
quesList.get(listItem).setFlag(true);
}
}
private void setFlagColor() {
if (quesList.get(listItem).isFlag()) {
btnFlag.setBackgroundColor(ContextCompat.getColor(Objects.requireNonNull(this), R.color.black));
btnFlag.setTextColor(ContextCompat.getColor(Objects.requireNonNull(this), R.color.grey));
} else {
btnFlag.setBackgroundColor(ContextCompat.getColor(Objects.requireNonNull(this), R.color.grey_light));
btnFlag.setTextColor(ContextCompat.getColor(Objects.requireNonNull(this), R.color.grey));
}
}
private void setButtonColor() {
btnA.setBackgroundResource(R.color.grey_light);
btnB.setBackgroundResource(R.color.grey_light);
btnC.setBackgroundResource(R.color.grey_light);
btnD.setBackgroundResource(R.color.grey_light);
}
private void displayNextQues() {
if (listItem < totalItem - 1) {
listItem++;
makeAllDisplay();
} else {
btnNext.setVisibility(View.GONE);
btnSubmit.setVisibility(View.VISIBLE);
}
}
private void makeAllDisplay() {
setDisplay(listItem);
setButtonColor();
setFlagColor();
switch (quesList.get(listItem).getSelAnswer()) {
case "optA":
btnA.setBackgroundResource(R.color.sky_blue);
break;
case "optB":
btnB.setBackgroundResource(R.color.sky_blue);
break;
case "optC":
btnC.setBackgroundResource(R.color.sky_blue);
break;
case "optD":
btnD.setBackgroundResource(R.color.sky_blue);
break;
default:
setButtonColor();
break;
}
}
private void displayPrevQues() {
btnNext.setVisibility(View.VISIBLE);
if (listItem > 0 && listItem < totalItem) {
listItem--;
makeAllDisplay();
} else {
Toast.makeText(this, "Cannot GO back!!", Toast.LENGTH_SHORT).show();
}
}
}
and the adapter code is below
public class QuestionLayoutRecyclerAdapter extends RecyclerView.Adapter < QuestionLayoutRecyclerAdapter.FlagViewHolder > {
private ArrayList < mcqQuestion > quesList;
private onItemClickListner onItemClickListner;
public void setOnItemClickListner(QuestionLayoutRecyclerAdapter.onItemClickListner onItemClickListner) {
this.onItemClickListner = onItemClickListner;
}
public interface onItemClickListner {
void onClick(int pos); //pass your object types.
}
public QuestionLayoutRecyclerAdapter(ArrayList < mcqQuestion > quesList) {
this.quesList = quesList;
}
#NonNull#Override
public FlagViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(layout.question_layout, parent, false);
FlagViewHolder flagViewHolder = new FlagViewHolder(view, quesList);
return flagViewHolder;
}
#SuppressLint("ResourceAsColor")#Override
public void onBindViewHolder(#NonNull final FlagViewHolder holder, int position) {
mcqQuestion question_id = quesList.get(position);
holder.tvQuestionNumber.setText("Question " + (position + 1));
if (question_id.isFlag()) {
holder.ivFlag.setImageResource(drawable.right2);
} else {
holder.ivFlag.setImageResource(drawable.white2);
}
holder.itemView.setOnClickListener(new View.OnClickListener() {#Override
public void onClick(View v) {
onItemClickListner.onClick(holder.getAdapterPosition());
}
});
}
#Override
public int getItemCount() {
return quesList.size();
}
public static class FlagViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
ImageView ivFlag;
TextView tvQuestionNumber;
ArrayList < mcqQuestion > quesList;
public FlagViewHolder(#NonNull View itemView, ArrayList < mcqQuestion > quesList) {
super(itemView);
ivFlag = itemView.findViewById(id.iv_layout_flag);
tvQuestionNumber = itemView.findViewById(id.tv_layout_question_number);
itemView.setOnClickListener(this);
this.quesList = quesList;
}
#Override
public void onClick(View v) {
int quesClick = getAdapterPosition();
}
}
}

Try this
#Override
public void onBackPressed()
{
Intent intent = new Intent(this, ActivityWhereYouWantToGo.class);
startActivity(intent);
}

As per you code, you are not navigation to another screen you are only changing the Visibility. On back press, you can check which view is currently displaying and handle accordingly.
#Override
public void onBackPressed() {
if (findViewById(R.id.your_view).visibility == View.Visible) {
//change your visibility
rvQuesLayout.setVisibility(View.VISIBLE);
llQuestionAll.setVisibility(View.GONE);
//reverse the things you did in makeAllDisplay() method
} else {
super.onBackPressed();
}
}

Trying to call method from MainActivity in Another Activity it is me leading to error

I have Recycler ListView which I show in MainActivity and the first item it is as selected, I have done to click for another items but the last stays clicked and when I try to take this recycler view to show me in next Activity it doesn't work.
The first item it is selected but I have a click method which when click an image makes as selected but when I click a new image this works but the first item stays as selected so continues for others images. I want only a image to be selected.
I don't want to write twice the same code.
Is it good if I have a class only for this method which I can use everytime I want.
The id of recycler view list it is the same on both xml's.
If you have any suggestion for my question please let me know.
This is the adapter for the RecyclerView.
public class ListViewAdapter extends RecyclerView.Adapter<ListViewAdapter.ViewHolder>{
private int selectedItem;
private ArrayList<Integer> mImages = new ArrayList<>();
private ArrayList<String> mSearchUrl = new ArrayList<>();
private Context mContext;
public ListViewAdapter(ArrayList<Integer> images, ArrayList<String> SearchUrl, Context context) {
mImages = images;
mContext = context;
mSearchUrl = SearchUrl;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.s_engine_item, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final ViewHolder viewHolder, final int i) {
selectedItem = 0;
if (selectedItem == i) {
viewHolder.image.setBackgroundColor(Color.parseColor("#30000000"));
}
Glide.with(mContext).load(mImages.get(i))
.into(viewHolder.image);
viewHolder.searchUrl.setText(mSearchUrl.get(i));
viewHolder.image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
viewHolder.image.setBackgroundColor(Color.parseColor("#30000000"));
selectedItem = i;
}
});
}
#Override
public int getItemCount() {
return mImages.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
ImageView image;
TextView searchUrl;
public ViewHolder(#NonNull View itemView) {
super(itemView);
image = itemView.findViewById(R.id.ivEngine);
searchUrl = itemView.findViewById(R.id.ivEngineText);
}
}
}
This is the method in MainActivity.class
public void intSearch() {
mImages.add(R.drawable.s_bing);
mSearchUrl.add("https://www.bing.com/search?q=");
mImages.add(R.drawable.s_google);
mSearchUrl.add("https://www.google.com/search?q=");
mImages.add(R.drawable.s_yahoo);
mSearchUrl.add("www.yahoo.com");
mImages.add(R.drawable.amazon_white256);
mSearchUrl.add("www.amazon.com");
mImages.add(R.drawable.amazon_white256);
mSearchUrl.add("www.amazon.com");
mImages.add(R.drawable.amazon_white256);
mSearchUrl.add("www.amazon.com");
initRecyclerView();
}
private void initRecyclerView() {
LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
RecyclerView recyclerView = findViewById(R.id.lvEngines);
recyclerView.setLayoutManager(layoutManager);
ListViewAdapter adapter = new ListViewAdapter(mImages, mSearchUrl, this);
recyclerView.setAdapter(adapter);
}
This is the button which takes to another activity.
btnSearch.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String newEntry = searchPlugin.getText().toString();
Cursor data = mDatabaseHelper.getData();
AddHistory(newEntry);
getFragmentRefreshListener().onRefresh();
Intent intent = new Intent(MainActivity.this, ActivitySearchEngine.class);
intent.putExtra("name", newEntry);
intent.putExtra("test", mSearchUrl.get(0));
startActivityForResult(intent, 2);
}
});
This is the another activity
public class ActivitySearchEngine extends Activity implements
SwipeRefreshLayout.OnRefreshListener {
public ImageView mHome;
public EditText searchPlugin;
public WebView webView;
Button btnSearch;
public ImageButton clearSearch, exitButton;
public ImageView favIcon;
public ProgressBar loadIcon;
String text;
SwipeRefreshLayout refreshLayout;
DatabaseHelper mDatabaseHelper;
private String selectedName;
private int selectedID;
private String selectedSearchUrl;
RecyclerView mListView;
MainActivity mainActivity = new MainActivity();
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search_result);
mHome = findViewById(R.id.imgBtnHome);
searchPlugin = findViewById(R.id.etSearch);
webView = findViewById(R.id.webView);
clearSearch = findViewById(R.id.btnClearSearch);
btnSearch = findViewById(R.id.btnSearch);
favIcon = findViewById(R.id.imgViewFavIcon);
loadIcon = findViewById(R.id.progressBarIcon);
exitButton = findViewById(R.id.imgBtnStopLoad);
refreshLayout = findViewById(R.id.refreshLayout);
mListView = findViewById(R.id.lvEngines);
refreshLayout.setOnRefreshListener(this);
mDatabaseHelper = new DatabaseHelper(this);
mainActivity.intSearch(); // Here it is the error
Activity.ActivitySearchEngine}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
Intent receivedIntent = getIntent();
selectedName = receivedIntent.getStringExtra("name");
selectedID = receivedIntent.getIntExtra("id",-1); //NOTE: -1 is just the default value
selectedSearchUrl = receivedIntent.getStringExtra("test");
searchPlugin.setText(selectedName);
loadIcon.setVisibility(View.VISIBLE);
webView.setWebViewClient(new WebViewClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("www.bing.com/search?=" + selectedName);
webView.setWebChromeClient(new WebChromeClient() {
#Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
}
#Override
public void onReceivedIcon(WebView view, Bitmap icon) {
super.onReceivedIcon(view, icon);
favIcon.setImageBitmap(icon);
}
});
webView.setWebViewClient(new WebViewClient() {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
loadIcon.setVisibility(View.VISIBLE);
favIcon.setVisibility(View.GONE);
}
public void onPageFinished(WebView view, String url) {
try {
if (loadIcon.getVisibility() == View.VISIBLE) {
loadIcon.setVisibility(View.GONE);
favIcon.setVisibility(View.VISIBLE);
btnSearch.setVisibility(View.GONE);
mHome.setVisibility(View.VISIBLE);
exitButton.setVisibility(View.GONE);
clearSearch.setVisibility(View.VISIBLE);
favIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onRefresh();
}
});
}
} catch (Exception exception) {
exception.printStackTrace();
}
}
});
searchPlugin.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void afterTextChanged(Editable s) {
processButtonByTextLength();
}
});
mHome.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
searchPlugin.setText(null);
finish();
}
});
clearSearch.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
searchPlugin.setText("");
}
});
public void processButtonByTextLength() {
String inputText = searchPlugin.getText().toString();
if(inputText.length() > 0) {
btnSearch.setVisibility(View.VISIBLE);
mHome.setVisibility(View.GONE);
clearSearch.setVisibility(View.VISIBLE);
favIcon.setVisibility(View.VISIBLE);
loadIcon.setVisibility(View.GONE);
exitButton.setVisibility(View.GONE);
} else if(inputText.length() == 0) {
btnSearch.setVisibility(View.GONE);
mHome.setVisibility(View.VISIBLE);
clearSearch.setVisibility(View.GONE);
}
}
#Override
public void onRefresh() {
webView.reload();
refreshLayout.setRefreshing(false);
}
}
This is the photo with RecyclerView at MainActivity.class
Photo of another Activity

WheelView change setCurrentItem doesn´t work

I have a problem with WheelView using these library. I've created a Dialog in which I want to put a WheelView, but i can't change current item and I can't figure about what the problem is, code:
public class SpeedDialog extends AlertDialog implements android.view.View.OnClickListener{
private Activity activity;
TextView textView;
int current = 50;
public SpeedDialog(Activity activity, int theme) {
super(activity, theme);
this.activity = activity;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.speed_dialog);
WheelView wheelView = (WheelView)findViewById(R.id.wheel_speed);
textView = (TextView) findViewById(R.id.current_value);
Button button = (Button) findViewById(R.id.apply);
button.setOnClickListener(this);
wheelView.setViewAdapter(new NumericWheelAdapter(activity, 50, 200, "%1.2f", 100));
wheelView.addChangingListener(new OnWheelChangedListener() {
#Override
public void onChanged(WheelView wheel, int oldValue, int newValue) {
setCurrent(newValue);
textView.setText(String.valueOf(newValue));
}
});
wheelView.setCurrentItem(getcurrent());
}
public Integer getcurrent() {
return current;
}
public void setCurrent(int current) {
this.current = current;
}
#Override
public void onClick(View v) {
switch (v.getid()) {
case R.id.apply:
dismiss();
break;
}
}
}

Solved using sharedpreferences to save and load value

How to make my app loads the articles from the beginning?

I have a simple app with 50 articles, my previous and next button work good in all choices BUT when the user goes to the end (at 50th article) the app can't load again from the beginning the 1st article.
Thanks for any help, here is my code:
I don't know if needs more cede for to be clear, cause I am a newbie.
public class StoryActivity extends AppCompatActivity {
public static final String TAG = StoryActivity.class.getSimpleName();
private Story mStory = new Story();
private ImageView mImageView;
private TextView mTextView;
private Page mCurrentPage;
private String mName;
private Button mPreviousButton;
private Button mNextButton;
private ScrollView mScrollView;
private Button mStartButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_story2);
//Intent intent = getIntent();
//mName = intent.getStringExtra(getString(R.string.key_name));
if(mName == null){
mName = "";
}
Log.d(TAG, mName);
mImageView = (ImageView)findViewById(R.id.storyImageView);
mTextView = (TextView)findViewById(R.id.storyTextView);
mPreviousButton = (Button)findViewById(R.id.previousButton);
mNextButton = (Button)findViewById(R.id.nextButton);
mTextView.setMovementMethod(new ScrollingMovementMethod());
loadPage(0);
}
private void loadPage(int choice){
mCurrentPage = mStory.getPage(choice);
Drawable drawable = getResources().getDrawable(mCurrentPage.getImageId());
mImageView.setImageDrawable(drawable);
String pageText = mCurrentPage.getText();
//add the name if placeholder included.
//pageText = String.format(pageText,mName);
mTextView.setText(pageText);
if(mCurrentPage.isSingle()){
mPreviousButton.setVisibility(View.VISIBLE);
mNextButton.setText("");
mNextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
loadPage(0);
}
});
}else{
mPreviousButton.setText(mCurrentPage.getChoices().getText1());
mNextButton.setText(mCurrentPage.getChoices().getText2());
mPreviousButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int previousPage = mCurrentPage.getChoices().getPreviousPage();
loadPage(previousPage);
}
});
mNextButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
int nextPage = mCurrentPage.getChoices().getNextPage();
loadPage(nextPage);
}
});
}}
}

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