erpsuiteandroid/Apex/res/drawable/bg_button.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <solid android:color="#FFFFFFFF" />

    <stroke
        android:width="2dp"
        android:color="#00000000" />

    <padding
        android:left="10dp"
        android:right="10dp" />

</shape>