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POViewpager in Android to switch between days endlessly
 

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    <p>I am currently making a app where students can view there lesson grid. The lessons are retrieved using a <a href="http://calvijn.tk/mobiel/2013-12-13.json" rel="nofollow noreferrer">json file</a>. Now the date changing is done via buttons in the actionbar, but i want to make it also work with smooth swipe effects.</p> <p>The only things that need to change is the SlectedDate-1 on left <strong>swipe</strong>. the SelectedDate+1 on right <strong>swipe</strong>.</p> <p>I tried it with <code>ViewPager</code>s but it didn't work does anybody know how to do it? Maybe something with 3 viewpagers?, please a detailed code because I'm not very familar with viewpagers code!</p> <p>I've tried out <a href="https://stackoverflow.com/questions/19731320/android-viewpager-working-with-date">Android ViewPager working with date</a> code but it doesn't work for me.</p> <pre><code> private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter { public ScreenSlidePagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { String myFormat = "yyyy-MM-dd"; SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US); switch (position) { case 0: // create your dates for the leftmost fragment myCalendar.add(Calendar.DAY_OF_YEAR, -1); final String dateje = sdf.format(myCalendar.getTime()); // mPager.setCurrentItem(1); return ScreenSlidePageFragment.create(dateje); case 1: // create your dates for the center fragment myCalendar.add(Calendar.DAY_OF_YEAR, 0); final String dateje2 = sdf.format(myCalendar.getTime()); //mPager.setCurrentItem(1); return ScreenSlidePageFragment.create(dateje2); case 2: myCalendar.add(Calendar.DAY_OF_YEAR, 1); final String dateje3 = sdf.format(myCalendar.getTime()); //mPager.setCurrentItem(1); return ScreenSlidePageFragment.create(dateje3); } return null; } @Override public int getCount() { return 3; } </code></pre> <p>my example fragment</p> <pre><code>public class ScreenSlidePageFragment extends Fragment { /** * The argument key for the page number this fragment represents. */ public static final String ARG_PAGE = "page"; /** * The fragment's page number, which is set to the argument value for {@link #ARG_PAGE}. */ private int mPageNumber; /** * Factory method for this fragment class. Constructs a new fragment for the given page number. */ public static ScreenSlidePageFragment create(String dateNumber) { ScreenSlidePageFragment fragment = new ScreenSlidePageFragment(); Bundle args = new Bundle(); args.putString(ARG_PAGE, dateNumber); fragment.setArguments(args); return fragment; } public ScreenSlidePageFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mPageNumber = 1; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout containing a title and body text. ViewGroup rootView = (ViewGroup) inflater .inflate(R.layout.fragment_screen_slide_page, container, false); String date = this.getArguments().getString(ARG_PAGE); // Set the title view to show the page number. ((TextView) rootView.findViewById(android.R.id.text1)).setText(date); return rootView; } /** * Returns the page number represented by this fragment object. */ public int getPageNumber() { return mPageNumber; } } </code></pre>
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