Border_rounded

my_border.xml
-------------------
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <stroke android:width="1dp" android:color="#cdcdcd" />
    <solid android:color="#ffffff" /> 
    <padding android:left="2dp" android:top="2dp"
            android:right="2dp" android:bottom="2dp" />
    <corners android:radius="15dip"/>
</shape> 
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or
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
    android:shape="rectangle">
    <solid
    android:color="#FFF"
    />
    <corners
        android:radius="10dip"
        />
    <stroke 
        android:width="5dip"
        android:color="#555"
        />
</shape>

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java code
-----------
listView.setBackgroundResource(R.layout.my_border);