Question

I’m trying to get selected dates using two date and time picker (like fromdate and To date). If I select fromdate I can get the fromdate to the textview. But if I select second datepicker (todate) update same textview (Fromdate textview).

      public class F2Activity extends InfosoftActivity 

      {
  private int mYear;
  private int mMonth;
  private int mDay;
  private int mYear2;
  private int mMonth2;
  private int mDay2;
  private TextView mDateDisplay;
  private TextView mDateDisplay2;
  private Button mPickDate;
  private Button mPickDate2;
  static final int DATE_DIALOG_ID = 0;
  static final int DATE_DIALOG_IDD = 0;
            public String AAA;
            public String BBB;



    public void onCreate(Bundle savedInstanceState) 
    {
    super.onCreate(savedInstanceState);
    setTheme(android.R.style.Theme_Black);

    setContentView(R.layout.activity_f2);

    Button BtnView=(Button) findViewById(R.id.BtnView);
    Button BtnDownload=(Button) findViewById(R.id.BtnDownload);

        mDateDisplay = (TextView) findViewById(R.id.showMyDate); 
        mDateDisplay2 = (TextView) findViewById(R.id.showMyDatee); 

        mPickDate = (Button) findViewById(R.id.myDatePickerButton);
        mPickDate2 = (Button) findViewById(R.id.myDatePickerButton2);



        mPickDate.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View v) {
                showDialog(DATE_DIALOG_ID);
            }
        });

        // get the current date
        final Calendar c = Calendar.getInstance();
        mYear = c.get(Calendar.YEAR);
        mMonth = c.get(Calendar.MONTH);
        mDay = c.get(Calendar.DAY_OF_MONTH);

        // display the current date
        updateDisplay();



        mPickDate2.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View v) {
                showDialog(DATE_DIALOG_IDD);
            }
        });


        // get the current date
        final Calendar c2 = Calendar.getInstance();
        mYear2 = c2.get(Calendar.YEAR);
        mMonth2 = c2.get(Calendar.MONTH);
        mDay2 = c2.get(Calendar.DAY_OF_MONTH);

        // display the current date
        updateDisplayTo();

            private void updateDisplay() 

            {
            this.mDateDisplay.setText(new StringBuilder()
                // Month is 0 based so add 1
            .append(mMonth + 1).append("-")
            .append(mDay).append("-")
            .append(mYear).append(" "));

            }
         private void updateDisplayTo() 
         {
        this.mDateDisplay2.setText(
        new StringBuilder()
                // Month is 0 based so add 1
            .append(mMonth2 + 1).append("-")
            .append(mDay2).append("-")
            .append(mYear2).append(" "));

    }



            private DatePickerDialog.OnDateSetListener mDateSetListener = new 
            DatePickerDialog.OnDateSetListener()

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

            {

            mYear = year;
            mMonth = monthOfYear;
            mDay = dayOfMonth;
            updateDisplay();

            }
        };

            @Override
            protected Dialog onCreateDialog(int id) {
            switch (id) {
            case DATE_DIALOG_ID:
            return new DatePickerDialog(this,
                        mDateSetListener,
                        mYear, mMonth, mDay);
           }
           return null;
                    }   



            private DatePickerDialog.OnDateSetListener mDateSetListener2 =new 
                    DatePickerDialog.OnDateSetListener() 
            {

                @Override
                public void onDateSet(DatePicker view, int year, int 
                                    monthOfYear,
                        int dayOfMonth) {
                    // TODO Auto-generated method stub

                      mYear2 = year;
                      mMonth2 = monthOfYear;
                      mDay2 = dayOfMonth;
                      updateDisplayTo();

                }
            };        



             protected Dialog onCreateDialog2 (int id)

                       {
                      switch (id)

                      {
                       case DATE_DIALOG_IDD:
                       return new DatePickerDialog(this,
                               mDateSetListener2,
                                  mYear2, mMonth2, mDay2);
                      }

                        return null;
                       }                        

                                           }

Answer 1

If you want to display more than one time of date using DatePicker in your application then no need to use two time DATE_DIALOG_ID. You can use only one and fulfill your requirements. I posted here code I hope it will helps you.

In button click

btnFromDate.setOnClickListener(clkListener);
btnToDate.setOnClickListener(clkListener);

Then

public OnClickListener clkListener = new OnClickListener()
    {
        @Override
        public void onClick(View v) 
        {
            if(v == btnFromDate)
            {
                showDateDialog(editTextFromDate, Calendar.getInstance());
            }
            if(v == btnToDate)
            {
                showDateDialog(editTextToDate, Calendar.getInstance());
            }
                }
   };

Then

EditText activeDateDisplay ;
Calendar activeDate;

public void showDateDialog(EditText dateDisplay, Calendar date) 
    {
        activeDateDisplay = dateDisplay;
        activeDate = date;
        showDialog(DATE_DIALOG_ID);
    }

Then

 CharSequence strFormate_Date;
 int DATE_DIALOG_ID = 0;

@Override
    protected Dialog onCreateDialog(int id) 
    {
        switch (id) 
        {
            case DATE_DIALOG_ID:
            {
                return new DatePickerDialog(Activity.this, mDateSetListener, activeDate.get(Calendar.YEAR), activeDate.get(Calendar.MONTH), activeDate.get(Calendar.DAY_OF_MONTH));
            }
        }
        return null;
    }

    private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() 
    {
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) 
        {
            activeDate.set(Calendar.YEAR, year);
            activeDate.set(Calendar.MONTH, monthOfYear);
            activeDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            updateDisplay(activeDateDisplay, activeDate);
            unregisterDateDisplay();
        }
    };
    private void unregisterDateDisplay() 
    {
        activeDateDisplay = null;
        activeDate = null;
        strFormate_Date = null;
    }

    private void updateDisplay(EditText dateDisplay, Calendar date) 
    {
        Time chosenDate = new Time();
        chosenDate.set(date.get(Calendar.DAY_OF_MONTH), date.get(Calendar.MONTH), date.get(Calendar.YEAR));
        long dtDob = chosenDate.toMillis(true);
        strFormate_Date = DateFormat.format("dd/MM/yyyy", dtDob);
        dateDisplay.setText(""+strFormate_Date);
    }

I hope it will solve your problem. If you have any problem regarding this then you can ask me.