public void showSelectDayDialog() {
final ViewPager viewPager = (ViewPager) view.findViewById(R.id.pager);
final Activity a = getActivity();
final Calendar cCal = Calendar.getInstance();
cCal.add(Calendar.DAY_OF_YEAR, viewPager.getCurrentItem() - 500);
DialogFragment ds =
new DialogFragment() {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
return new DatePickerDialog(
a,
new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(
DatePicker view, int year, int monthOfYear, int dayOfMonth) {
Calendar nCal = Calendar.getInstance();
nCal.set(Calendar.YEAR, year);
nCal.set(Calendar.MONTH, monthOfYear);
nCal.set(Calendar.DAY_OF_MONTH, dayOfMonth);
long timeDelta = nCal.getTimeInMillis() - cCal.getTimeInMillis();
int dayDelta = (int) (timeDelta / (60000 * 60 * 24));
viewPager.setCurrentItem(viewPager.getCurrentItem() + dayDelta);
}
},
cCal.get(Calendar.YEAR),
cCal.get(Calendar.MONTH),
cCal.get(Calendar.DAY_OF_MONTH));
}
};
ds.show(getActivity().getFragmentManager(), "datepicker");
}
public void restoreCurrentPage() {
ViewPager pager = (ViewPager) view.findViewById(R.id.pager);
try {
pager.setCurrentItem(getStoredPage());
} catch (NullPointerException e) {
// Ewiges Leid mit dem Emulator
}
}
public void storeCurrentPage() {
try {
ViewPager pager = (ViewPager) view.findViewById(R.id.pager);
SharedPreferences.Editor editor =
getActivity().getSharedPreferences("plan", Context.MODE_PRIVATE).edit();
editor.putInt("currentPage", pager.getCurrentItem());
editor.apply();
} catch (NullPointerException e) {
// Passiert ständig im Emulator
}
}
public boolean backPressed() {
ViewPager pager = getViewPager();
int currentItem = pager.getCurrentItem();
if (currentItem != 500) {
if (currentItem > 500) pager.setCurrentItem(currentItem - 1);
if (currentItem < 500) pager.setCurrentItem(currentItem + 1);
} else {
getActivity().finish();
}
return false;
}
@Nullable
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_main, container, false);
FloatingActionButton fab = (FloatingActionButton) view.findViewById(R.id.fab);
PlanFragmentAdapter.fab = fab;
PlanFragmentAdapter.fabAnimator = new FABAnimator(fab);
PlanFragmentAdapter.fab.setImageDrawable(
new IconicsDrawable(this.getContext())
.icon(GoogleMaterial.Icon.gmd_undo)
.color(Color.WHITE)
.sizeDp(40));
planPagerAdapter = new PlanPagerAdapter(this.getChildFragmentManager(), this.getContext());
setAdapter();
ClickablePagerTabStrip pagerTabStrip =
(ClickablePagerTabStrip) view.findViewById(R.id.tabstrip);
pagerTabStrip.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
showSelectDayDialog();
}
});
fab.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
ViewPager pager = (ViewPager) view.findViewById(R.id.pager);
pager.setCurrentItem(500);
}
});
ViewPager pager = (ViewPager) view.findViewById(R.id.pager);
pager.addOnPageChangeListener(this);
return view;
}
public void setAdapter() {
ViewPager pager = (ViewPager) view.findViewById(R.id.pager);
pager.setAdapter(planPagerAdapter);
pager.setOffscreenPageLimit(5);
restoreCurrentPage();
}