How to Transfer the Formatted Date String from My Datepickerfragment

How to transfer the formatted date string from my DatePickerFragment?

As tyczj pointed out you can use the interface method or you could make datapicker class an inner class of your activity class in which case it should be static and you need a weakreference of the outerclass

Using interface.

Define a interface in DatePickerFragment. Implement the interface in your activity class and set the date to textview.

public class DatePickerFragment extends DialogFragment
implements DatePickerDialog.OnDateSetListener {

    TheListener listener;

public interface TheListener{
    public void returnDate(String date);
}

@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);
listener = (TheListener) getActivity(); 

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

@Override
public void onDateSet(DatePicker view, int year, int month, int day) {
Calendar c = Calendar.getInstance();
c.set(year, month, day);

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String formattedDate = sdf.format(c.getTime());
if (listener != null) 
{
  listener.returnDate(formattedDate); 

}

}
}

MainActivity

public class MainActivity extends Activity implements DatePickerFragment.TheListener{

    Button b;
    TextView tv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        b= (Button) findViewById(R.id.button1);
        tv= (TextView) findViewById(R.id.textView1);
        b.setOnClickListener(new OnClickListener()
        {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                DialogFragment picker = new DatePickerFragment();
                picker.show(getFragmentManager(), "datePicker");
            }

        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public void returnDate(String date) {
        // TODO Auto-generated method stub
        tv.setText(date);
    }

}

Second way not sure if this is the best way. I would recommend the above interface method.

public class MainActivity extends Activity {//implements DatePickerFragment.TheListener{

    Button b;
    TextView tv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        b= (Button) findViewById(R.id.button1);
        tv= (TextView) findViewById(R.id.textView1);
        b.setOnClickListener(new OnClickListener()
        {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                DialogFragment picker = new DatePickerFragment();
                picker.show(getFragmentManager(), "datePicker");
            }

        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    public static class DatePickerFragment extends DialogFragment
    implements DatePickerDialog.OnDateSetListener {

        private WeakReference<MainActivity> mActivity;

    @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);
    mActivity = new WeakReference<MainActivity>((MainActivity) getActivity());

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

    @Override
    public void onDateSet(DatePicker view, int year, int month, int day) {
    Calendar c = Calendar.getInstance();
    c.set(year, month, day);

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    String formattedDate = sdf.format(c.getTime());
      MainActivity target = mActivity.get(); 
      if (target != null) target.tv.setText(formattedDate);

    }
    }
}

Converting String to datePicker Format

This is how you convert a String to LocalDate which is of a specific pattern:

String dateAsString = "28/12/2002";

DateTimeFormatter customDateTimeFormatter = DateTimeFormatter.ofPattern("dd/MM/yyyy");

LocalDate localDate = LocalDate.parse(date, formatter);

And then set the value:

endDateDatePicker.setValue(localDate); 

Android format date to MM-DD-YYYY from Datepicker

Check this:

date format change in datepicker and calendar

   year = calendar.get(Calendar.YEAR);
   month = calendar.get(Calendar.MONTH);
   day = calendar.get(Calendar.DAY_OF_MONTH);

    if(month < 10){

        month = "0" + month;
    }
    if(day < 10){

        day  = "0" + day ;
    }
    searchText.setText(day + "-" + month + "-" + year);

Using moment.js to convert date to string MM/dd/yyyy

I think you just have incorrect casing in the format string. According to the documentation this should work for you: MM/DD/YYYY

moment.js documentation

jQuery UI DatePicker - Change Date Format

Here's one specific for your code:

var date = $('#datepicker').datepicker({ dateFormat: 'dd-mm-yy' }).val();

More general info available here:

• http://api.jqueryui.com/datepicker/#option-dateFormat
• http://api.jqueryui.com/datepicker/#utility-formatDate

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