MyCustomPicker: custom_picker_dialog.xml

custom_picker_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

     <TextView
        android:id="@+id/titletextview"
        android:layout_width="200dp"
        android:layout_height="25dp"
        android:paddingLeft="25dp"
        android:paddingRight="25dp"/>

      <ListView
        android:id="@+id/listview"
        android:layout_gravity="center"
        android:background="@drawable/abc_list_pressed_holo_light"
        android:layout_width="match_parent"
        android:dividerHeight="3dp"
        android:layout_height="0dp"
        android:layout_weight="1"/>
</LinearLayout>