Hey guys i am working on an application that can be used to predict the due date of a babies birth but i have failed to figure out how to increment the date from the date time picker dialog below is my code


public class Dday extends Activity implements OnClickListener{
    
    private EditText fromDateEtxt;
    
    private DatePickerDialog fromDatePickerDialog;
    
    private SimpleDateFormat dateFormatter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_dday);
        
dateFormatter = new SimpleDateFormat("dd-MM-yyyy", Locale.US);
        
        findViewsById();
        
        setDateTimeField();
    }
    
    private void findViewsById() {
        fromDateEtxt = (EditText) findViewById(R.id.etxt_fromdate);    
        fromDateEtxt.setInputType(InputType.TYPE_NULL);
        fromDateEtxt.requestFocus();
        
    }
    
    private void setDateTimeField() {
        fromDateEtxt.setOnClickListener(this);
        
        Calendar newCalendar = Calendar.getInstance();
        fromDatePickerDialog = new DatePickerDialog(this, new OnDateSetListener() {
 
            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                Calendar newDate = Calendar.getInstance();
                newDate.set(year, monthOfYear, dayOfMonth);
                fromDateEtxt.setText(dateFormatter.format(newDate.getTime()));
            }
 
        },newCalendar.get(Calendar.YEAR), newCalendar.get(Calendar.MONTH), newCalendar.get(Calendar.DAY_OF_MONTH));
    }
        

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.dday, menu);
        return true;
    }
    
    public void showDate (View view)
    {
        //Adding the days to the date
        
        
        
        
        // Button action

        Intent dts = new Intent(this,Details.class);

        startActivity(dts);

    }

    @Override
    public void onClick(View view) {
        // TODO Auto-generated method stub
        
        if(view == fromDateEtxt) {
            fromDatePickerDialog.show();
        }
        
    }
}


Please help me out