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 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;
}
