<declare-styleable name="PersianDatePicker">
    <attr name="minYear" format="integer" />
    <attr name="maxYear" format="integer" />
    <attr name="selectedYear" format="integer" />
    <attr name="selectedMonth" format="integer" />
    <attr name="selectedDay" format="integer" />
    <attr name="displayMonthNames" format="boolean" />
    <attr name="yearRange" format="integer" />
</declare-styleable>

displayDenoscription = a.getBoolean(R.styleable., false);
if( displayDenoscription ) {
   denoscriptionTextView.setVisibility(View.VISIBLE);
}

<ir.smartlab.persindatepicker.PersianDatePicker
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="40px"

        android:id="@+id/calender"
        app:displayMonthNames="true"/>

<TextView android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:gravity="right"
          android:text="تاریخ تولد"
          android:textSize="30sp"
          android:layout_marginTop="20dp"
         
        />