Date Picker from start to end through callender

 Calendar calendar = Calendar.getInstance();
 LinearLayout startdate=alertDialog.findViewById(R.id.fromdate); //You can take textview,img
 TextView txt1=alertDialog.findViewById(R.id.text1); // taken id for textview to show
 TextView txt2=alertDialog.findViewById(R.id.text2);  // taken id for textview to show
LinearLayout enddata=alertDialog.findViewById(R.id.todate); //can take textview or imageview
 final int year = calendar.get( Calendar.YEAR );
 final int month = calendar.get( Calendar.MONTH );
 final int day = calendar.get( Calendar.DAY_OF_MONTH );
 ///Start Date
 startdate.setOnClickListener(new View.OnClickListener() {
     @Override
     public void onClick(View view) {
         DatePickerDialog datePickerDialog;
         datePickerDialog = new DatePickerDialog( MainActivity.this,
                 (datePicker, year1, month1, dayOfMonth) -> {
                     month1 = month1 + 1;
                     String date = dayOfMonth + "-" + month1 + "-" + year1;
                     txt1.setText( date );}, year,month,day );
         datePickerDialog.getDatePicker().setMinDate( System.currentTimeMillis() - 1000 );
         datePickerDialog.show();
     }
 });
 ///End Date
 enddata.setOnClickListener(new View.OnClickListener() {
     @Override
     public void onClick(View view) {
         DatePickerDialog datePickerDialog;
         datePickerDialog = new DatePickerDialog( MainActivity.this,
                 (datePicker, year1, month1, dayOfMonth) -> {
                     month1 = month1 + 1;
                     String date = dayOfMonth + "-" + month1 + "-" + year1;
                     txt2.setText( date );
                 },
                 year,
                 month,
                 day );
         datePickerDialog.getDatePicker().setMinDate( System.currentTimeMillis() - 1000 );
         datePickerDialog.show();
     }
 });