Get date from datepicker using dialogfragment

Question

I\'m using the google example to insert a datepicker inside my app using a dialogfragment
http://developer.android.com/guide/topics/ui/controls/pickers.html

But

Answer 1

In case you have to return a result to a Fragment, but not an Activity, here is a complete solution:

public class DatePickerDialogFragment extends DialogFragment  {

    private static final String ARGUMENT_YEAR = "ARGUMENT_YEAR";
    private static final String ARGUMENT_MONTH = "ARGUMENT_MONTH";
    private static final String ARGUMENT_DAY = "ARGUMENT_DAY";
    private DatePickerDialog.OnDateSetListener listener;

    private int year;
    private int month;
    private int dayOfMonth;

    public static DatePickerDialogFragment newInstance(final int year, final int month, final int dayOfMonth) {
        final DatePickerDialogFragment df = new DatePickerDialogFragment();
        final Bundle args = new Bundle();
        args.putInt(ARGUMENT_YEAR, year);
        args.putInt(ARGUMENT_MONTH, month);
        args.putInt(ARGUMENT_DAY, dayOfMonth);
        df.setArguments(args);
        return df;
    }

    @Override
    public void onCreate(@Nullable final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        retrieveArguments();
    }

    private void retrieveArguments() {
        final Bundle args = getArguments();
        if (args != null) {
            year = args.getInt(ARGUMENT_YEAR);
            month = args.getInt(ARGUMENT_MONTH);
            dayOfMonth = args.getInt(ARGUMENT_DAY);
        }
    }

    @Override
    public Dialog onCreateDialog(final Bundle savedInstanceState) {
        return new DatePickerDialog(getContext(), this.listener, this.year, this.month, this.dayOfMonth);
    }

    public void setListener(final DatePickerDialog.OnDateSetListener listener) {
        this.listener = listener;
    }
}

Then just use it in a Fragment or in an Activity:

final Calendar c = Calendar.getInstance();
DatePickerDialogFragment datePicker = DatePickerDialogFragment.newInstance(
        c.get(Calendar.YEAR),
        c.get(Calendar.MONTH),
        c.get(Calendar.DAY_OF_MONTH));
datePicker.setListener(this);
datePicker.show(getChildFragmentManager(), null);

Answer 2

I simple override onDateSet in date picker creation in my class that shows a date picker. See code below:

  private OnClickListener onDateClicked() {
    return new OnClickListener() {
          @Override
          public void onClick(View v) {
             DialogFragment newFragment = new DatePickerFragment() {
                @Override
                public void onDateSet(DatePicker view, int year, int month, int day) {
                  salePaymentCustomView.setBtDateText("" + day + "/" + month+1 + "/" + year);
                }
             };
             newFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
    }
  };
 } 

Answer 3

public void onDate(View view) {

        DialogFragment fragment = new SelectDateFragment();
        fragment.show(getFragmentManager(), "Date Picker");
    }

//  @SuppressLint("NewApi")
    class SelectDateFragment extends DialogFragment implements
            DatePickerDialog.OnDateSetListener {

        public Dialog onCreateDialog(Bundle savedInstanceState) {


            System.out.println("entrering on create dialog");;

            return new DatePickerDialog(getActivity(), this, mYear, mMonth,
                    mDay);//it will return dialog setting date with mYera,MMonth and MDay

        }

        @Override
        public void onDateSet(android.widget.DatePicker view, int year,
                int monthOfYear, int dayOfMonth) {
            System.out.println("year=" + year + "day=" + dayOfMonth + "month="
                    + monthOfYear);
            mYear=year;
            mMonth=monthOfYear;
            mDay=dayOfMonth;

            onPopulateSet(year, monthOfYear + 1, dayOfMonth);

        }
// set the selected date in the edit text  
        private void onPopulateSet(int year, int i, int dayOfMonth) {
            EditText et_setDate;
            et_setDate = (EditText) findViewById(R.id.register_et_dob);//register_et_dob:-id name of the edit text 
            et_setDate.setText(dayOfMonth + "/" + i + "/" + year);
            System.out.println("enetring on populate Set");

        }

Answer 4

The problem can also be solved without moving the onDateSet method to the parent activity. You just have to tell the DatePickerFragment where to search for the view:

public class DatePickerFragment extends DialogFragment implements
    DatePickerDialog.OnDateSetListener {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current date as the default date in the picker
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);

        // Create a new instance of DatePickerDialog and return it
        return new DatePickerDialog(getActivity(), this, year, month, day);
    }

    public void onDateSet(DatePicker view, int year, int month, int day) {
        // do some stuff for example write on log and update TextField on activity
        Log.w("DatePicker","Date = " + year);
        ((TextView) getActivity().findViewById(R.id.tf_date)).setText("Date = " + year);
    }
}

I also changed the target of the cast from EditText to TextView. This way, you can reuse your implementation for different kinds of views, not only for an EditText.

Answer 5

i have one correction to the above answer. instead of return the DatePickerDialog like this

return new DatePickerDialog(getActivity(), (EditSessionActivity)getActivity(), year, month, day);

you should return it in a more generic way

return new DatePickerDialog(getActivity(), (OnDateSetListener)getActivity(), year, month, day);

just make sure your activity implements OnDateSetListener interface and override the function onDateSet

@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,int dayOfMonth) 

Answer 6

Constructor fo DatePickerDialog takes DatePickerDialog.OnDateSetListener as second parameter, so maybe you should implement that interface in your parent activity EditSessionActivity (not in DatePickerFragment ) and change this line:

return new DatePickerDialog(getActivity(), this, year, month, day);

into this:

return new DatePickerDialog(getActivity(), (EditSessionActivity)getActivity(), year, month, day);

And then your activity should looks like this:

public class EditSessionActivity extends FragmentActivity implements
        DatePickerDialog.OnDateSetListener{

    public void onDateSet(DatePicker view, int year, int month, int day) {
        //use date in your activity
    }
    ...
}