Widget - DatePicker

DatePicker dp=new DatePicker(MainActivity.this);
linear1.addView(dp);
Calendar calendar = Calendar.getInstance();
dp.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH),new DatePicker.OnDateChangedListener(){
@Override public void onDateChanged(DatePicker datePicker, int i, int i1, int i2) {
Toast.makeText(getApplicationContext(),datePicker.getDayOfMonth() + "-" +datePicker.getMonth() + "-"+datePicker.getYear(),Toast.LENGTH_SHORT).show();
} });