<EditText
android:id="@+id/editHolderName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/holderName"
android:background="@drawable/edittextradius"
android:inputType="text"
android:ems="10" >
</EditText>
Bu şekilde eidttext'e background verdikten sonra Drawable klosorunun ıcınde edittextradius xml oluştur. içine
<?xml version="1.0" encoding="utf-8"?>
<!-- res/drawable/rounded_edittext.xml -->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" android:padding="10dp">
<solid android:color="#FFFFFF"/>
<corners
android:bottomRightRadius="10dp"
android:bottomLeftRadius="10dp"
android:topLeftRadius="10dp"
android:topRightRadius="10dp"/>
</shape>
solid edittext içindeki renk corner vermek istersen stroke verebilirsin ayriyetten boylece bordere oluşur